MODULE 2: Water Supply, Water Safety and Treatment

Lesson Objectives

By the end of this lesson, learners should be able to:

Define water sources and explain their importance.
Differentiate between surface water and groundwater.
Explain the concept of rainwater harvesting.
Distinguish between protected and unprotected water sources.
Identify advantages and challenges associated with different water sources.
Understand the importance of protecting water sources from contamination.

Introduction

Water is one of the most essential resources for human life, agriculture, sanitation, industry, and environmental sustainability. Communities depend on different sources of water for drinking, cooking, washing, farming, and other daily activities. However, not all water sources are safe. Some may contain harmful bacteria, chemicals, or pollutants that can cause serious diseases.

Understanding different water sources is important for WASH workers because it helps in selecting safe water supplies, protecting communities from contamination, and improving public health. This lesson explores the major sources of water, including surface water, groundwater, rainwater harvesting, and protected versus unprotected water sources.

1. Meaning of Water Sources

A water source is any natural or artificial place where water can be obtained for human use.

Water sources are important because they provide water for:

Drinking
Cooking
Bathing
Agriculture
Livestock
Industrial activities
Sanitation and hygiene

Water sources may be classified into:

Category	Examples
Natural sources	Rivers, lakes, springs
Artificial sources	Boreholes, dams, water tanks

The safety and reliability of a water source determine its suitability for human consumption.

2. Surface Water

Meaning of Surface Water

Surface water refers to water found on the surface of the earth.

Common examples include:

Rivers
Lakes
Streams
Ponds
Dams
Reservoirs

Surface water is one of the most widely used water sources in many communities.

Uses of Surface Water

Surface water is used for:

Domestic purposes
Irrigation
Fishing
Hydropower generation
Livestock watering
Industrial use

Advantages of Surface Water

a. Easily Accessible

Many communities can easily collect water from nearby rivers or lakes.

b. Large Water Quantities

Large rivers and lakes can supply water to many people.

c. Useful for Agriculture

Surface water supports irrigation and food production.

Challenges of Surface Water

a. High Risk of Contamination

Surface water is easily polluted by:

Human waste
Industrial waste
Agricultural chemicals
Animal waste
Open defecation

b. Seasonal Changes

Some rivers and streams dry up during dry seasons.

c. Waterborne Diseases

Unsafe surface water may spread diseases such as:

Cholera
Typhoid
Dysentery

Practical Example

A community using untreated river water for drinking may experience repeated diarrhea outbreaks because the river becomes contaminated during rainfall.

3. Groundwater

Meaning of Groundwater

Groundwater is water found beneath the earth’s surface in soil and rock layers called aquifers.

Groundwater is commonly accessed through:

Boreholes
Wells
Springs

Advantages of Groundwater

a. Usually Safer Than Surface Water

The soil naturally filters some impurities and microorganisms.

b. Available Throughout the Year

Groundwater sources are less affected by seasonal changes.

c. Lower Risk of Pollution

Protected groundwater sources are generally cleaner.

d. Reliable for Rural Communities

Many villages depend on boreholes and wells for daily water supply.

Challenges of Groundwater

a. Expensive Construction

Drilling boreholes and constructing protected wells require money and technical expertise.

b. Risk of Contamination

Groundwater may still become contaminated from:

Poor sanitation
Pit latrines near wells
Agricultural chemicals
Waste dumping

c. Mechanical Breakdowns

Boreholes may stop functioning if pumps break down.

Types of Groundwater Sources

Groundwater Source	Description
Borehole	Deep drilled water source with a pump
Protected well	Covered well protected from contamination
Spring	Natural flow of groundwater to the surface

Practical Example

A village installs a protected borehole after years of using contaminated river water. Cases of diarrhea reduce significantly because the community now has safer drinking water.

4. Rainwater Harvesting

Meaning of Rainwater Harvesting

Rainwater harvesting is the collection and storage of rainwater for future use.

Rainwater is commonly collected from:

Roofs
Gutters
Surface catchment systems

The water is then stored in:

Tanks
Containers
Reservoirs

Advantages of Rainwater Harvesting

a. Reduces Water Shortages

Stored rainwater can be used during dry seasons.

b. Low Cost

Simple systems can be built using local materials.

c. Reduces Pressure on Other Water Sources

Communities become less dependent on rivers and boreholes.

d. Environmentally Friendly

Rainwater harvesting supports water conservation.

Challenges of Rainwater Harvesting

a. Seasonal Dependence

Water collection depends on rainfall availability.

b. Risk of Contamination

Dirty roofs and storage containers may contaminate water.

c. Limited Storage Capacity

Small tanks may not store enough water for large families.

Safety Measures in Rainwater Harvesting

To improve safety:

Clean roofs and gutters regularly
Cover storage tanks properly
Use clean containers
Treat water before drinking if necessary

5. Protected and Unprotected Water Sources

Protected Water Sources

Protected water sources are designed and maintained to reduce contamination.

Examples include:

Protected wells
Boreholes
Protected springs
Treated piped water systems

Characteristics of Protected Sources

Covered or sealed
Proper drainage systems
Fenced surroundings
Protected from animals and waste

Benefits

Safer drinking water
Reduced disease transmission
Improved public health

Unprotected Water Sources

Unprotected water sources are exposed to contamination and unsafe environmental conditions.

Examples include:

Open wells
Rivers
Unprotected springs
Ponds

Risks of Unprotected Sources

Unprotected sources may be contaminated by:

Human waste
Animal waste
Garbage
Floodwater
Chemicals

People using unprotected sources are at higher risk of waterborne diseases.

Comparison Between Protected and Unprotected Sources

Protected Source	Unprotected Source
Safer for drinking	High contamination risk
Properly covered	Open to contamination
Lower disease risk	Higher disease risk
Better water quality	Poorer water quality
Requires maintenance	Often poorly managed

Importance of Protecting Water Sources

Protecting water sources helps:

Prevent disease outbreaks
Improve water quality
Reduce healthcare costs
Support sustainable water supply
Protect the environment

Communities should avoid activities such as:

Open defecation near water sources
Dumping waste into rivers
Washing clothes near drinking water points
Allowing animals near protected water sources

Practical Community Scenario

A rural community depends on an unprotected shallow well located near pit latrines. During rainy seasons, floodwater contaminates the well, leading to frequent typhoid outbreaks.

A WASH project later:

Protects the well
Builds drainage systems
Installs a cover
Trains the community on hygiene

As a result, water quality improves and disease cases decrease significantly.

Conclusion

Water sources are essential for human survival, health, and development. Surface water, groundwater, and rainwater harvesting all play important roles in supplying water to communities. However, water safety depends on proper protection and management. Protected water sources provide safer and more reliable water than unprotected sources. Understanding different water sources and their risks helps WASH professionals develop effective strategies for improving public health and ensuring sustainable access to safe water.

Lesson Objectives

By the end of this lesson, learners should be able to:

Explain the meaning of global WASH standards and principles.
Describe major humanitarian WASH principles used in emergencies and development work.
Understand the importance of Sustainable Development Goal 6.
Explain community-centered approaches in WASH programs.
Identify how global standards improve the quality and effectiveness of WASH interventions.

Introduction

WASH programs are guided by international standards and principles that help organizations provide safe, effective, and sustainable services. These standards ensure that communities receive quality water, sanitation, and hygiene support during both emergencies and long-term development projects.

Today, governments, NGOs, and humanitarian agencies use global WASH principles to improve accountability, protect human dignity, and promote sustainable development. This lesson explores humanitarian WASH principles, Sustainable Development Goal 6, and community-centered WASH approaches.

1. Humanitarian WASH Principles

Humanitarian WASH principles are guidelines used to protect health and dignity during emergencies such as floods, droughts, conflicts, disease outbreaks, and refugee crises.

Organizations involved in humanitarian WASH include:

UNICEF
World Health Organization
International Committee of the Red Cross

These principles help ensure that affected populations receive safe and fair WASH services.

a. Principle of Human Dignity

Every person has the right to safe water, sanitation, and hygiene regardless of their social status, religion, gender, or nationality.

This principle emphasizes:

Privacy in sanitation facilities
Safety for women and children
Respect for cultural practices
Equal treatment of all people

Example:
In refugee camps, toilets should be separated for men and women to improve privacy and safety.

b. Principle of Equity and Inclusion

WASH services must be accessible to everyone, including:

People with disabilities
Elderly people
Children
Pregnant women
Vulnerable populations

Projects should avoid discrimination and ensure equal access to services.

Practical example:
A borehole should include pathways that can also be used by people using wheelchairs.

c. Principle of Participation

Communities should actively participate in planning, implementing, and managing WASH projects.

Participation improves:

Community ownership
Sustainability
Trust
Acceptance of the project

Communities are often involved in:

Site selection
Hygiene promotion
Water point management
Monitoring activities

d. Principle of Do No Harm

WASH interventions should not create new problems or conflicts.

For example:

Water distribution should not increase community tensions.
Waste disposal sites should not pollute nearby water sources.
Poor drainage systems should not create mosquito breeding areas.

Organizations must carefully assess risks before implementing projects.

e. Principle of Accountability

Organizations must be transparent and responsible for their actions and resources.

Accountability includes:

Listening to community feedback
Reporting honestly
Monitoring project quality
Correcting mistakes when necessary

Communities should know:

What support is being provided
Project timelines
Their rights and responsibilities

2. Sustainable Development Goal 6 (SDG 6)

The Sustainable Development Goals (SDGs) are global goals created by the United Nations to improve life worldwide by 2030.

SDG 6 focuses on:

“Clean Water and Sanitation for All”

The goal aims to ensure that all people have access to:

Safe drinking water
Adequate sanitation
Good hygiene services

Main Targets of SDG 6

a. Universal Access to Safe Drinking Water

Every person should have reliable and affordable access to clean water.

b. Adequate Sanitation and Hygiene

Communities should have safe toilets and proper hygiene facilities.

c. End Open Defecation

Countries are encouraged to eliminate open defecation practices.

d. Improve Water Quality

Pollution of rivers, lakes, and groundwater should be reduced.

e. Sustainable Water Management

Water resources should be protected for future generations.

Importance of SDG 6

SDG 6 is important because it contributes to:

Area	Contribution of SDG 6
Health	Reduces waterborne diseases
Education	Improves school attendance
Gender Equality	Supports women and girls
Economic Growth	Increases productivity
Environment	Protects ecosystems

Practical Example of SDG 6

A rural district lacking clean water may experience:

Frequent cholera outbreaks
Poor school attendance
Long walking distances for water

A WASH project aligned with SDG 6 may:

Drill boreholes
Build toilets
Train communities in hygiene
Establish water management committees

This improves both health and development outcomes.

3. Community-Centered WASH Approaches

Community-centered WASH approaches place communities at the center of decision-making and project implementation.

Instead of forcing solutions on people, organizations work together with communities to identify needs and create sustainable solutions.

Key Features of Community-Centered WASH

a. Community Participation

Communities help design and manage projects.

b. Local Ownership

People feel responsible for protecting and maintaining WASH facilities.

c. Cultural Sensitivity

Projects respect local traditions and beliefs.

d. Sustainability

Projects are more likely to continue successfully after donor support ends.

Common Community-Centered Approaches

i. Community-Led Total Sanitation (CLTS)

CLTS encourages communities to stop open defecation through collective action and behavior change.

Communities analyze how poor sanitation affects health and then develop their own solutions.

Benefits include:

Increased toilet construction
Improved hygiene behavior
Strong community ownership

ii. Hygiene Promotion Programs

Communities receive education on:

Handwashing
Safe water storage
Food hygiene
Waste disposal

Behavior change communication is a major part of successful WASH programs.

iii. Water User Committees

Communities form committees responsible for:

Managing boreholes
Collecting maintenance fees
Monitoring water usage
Reporting breakdowns

This strengthens sustainability.

Importance of Global WASH Standards

Global WASH standards help ensure that projects are:

Safe
Effective
Fair
Sustainable
Accountable

Without standards, projects may fail, waste resources, or harm communities.

Standards also improve coordination among governments, NGOs, and donors during emergencies and development programs.

Conclusion

Global WASH standards and principles guide organizations in delivering safe, fair, and sustainable services to communities. Humanitarian principles protect dignity, accountability, and inclusion, while SDG 6 provides a global vision for universal access to clean water and sanitation. Community-centered approaches strengthen participation, ownership, and long-term sustainability. Understanding these principles is essential for every WASH professional working in development and humanitarian programs.

Lesson Objectives

By the end of this lesson, learners should be able to:

Define waterborne and hygiene-related diseases.
Explain the causes and transmission of common WASH-related diseases.
Describe the signs and symptoms of cholera, typhoid, dysentery, diarrhea, and bilharzia.
Explain how poor sanitation and hygiene contribute to disease spread.
Identify prevention and control measures for WASH-related diseases.

Introduction

Unsafe water, poor sanitation, and poor hygiene practices are major causes of disease in many communities around the world. Millions of people become sick every year because they drink contaminated water, use unsafe sanitation facilities, or practice poor hygiene.

Waterborne and hygiene-related diseases affect children, adults, schools, workplaces, and entire communities. These diseases can lead to severe illness, malnutrition, reduced productivity, and death if not properly prevented or treated.

This lesson focuses on five major WASH-related diseases: cholera, typhoid, dysentery, diarrhea, and bilharzia.

Understanding Waterborne and Hygiene-Related Diseases

Waterborne diseases are illnesses caused by drinking or using contaminated water. Hygiene-related diseases occur when poor hygiene practices allow germs and parasites to spread easily.

These diseases are commonly linked to:

Open defecation
Unsafe drinking water
Poor handwashing practices
Improper waste disposal
Poor drainage systems
Contaminated food

Common transmission routes include:

Cause	Possible Result
Drinking contaminated water	Infection and diarrhea
Eating contaminated food	Stomach infections
Poor handwashing	Spread of bacteria and viruses
Contact with contaminated water	Parasitic infections

1. Cholera

Meaning of Cholera

Cholera is a serious waterborne disease caused by bacteria known as Vibrio cholerae. It spreads mainly through contaminated water and food.

Cholera outbreaks are common in areas with:

Poor sanitation
Unsafe water
Overcrowding
Poor waste management

Signs and Symptoms of Cholera

Common symptoms include:

Severe watery diarrhea
Vomiting
Rapid dehydration
Weakness
Muscle cramps
Sunken eyes

Severe dehydration can cause death within hours if treatment is not provided quickly.

Transmission of Cholera

Cholera spreads through:

Drinking contaminated water
Eating contaminated food
Poor hand hygiene
Open defecation

Example:
If sewage contaminates a community water source, many people may become infected after drinking the water.

Prevention of Cholera

Cholera can be prevented through:

Drinking treated or boiled water
Proper handwashing with soap
Safe food preparation
Proper sanitation
Proper waste disposal
Community hygiene education

2. Typhoid

Meaning of Typhoid

Typhoid is a bacterial infection caused by Salmonella typhi. It spreads through contaminated food and water.

Typhoid is common in areas where sanitation systems are weak.

Signs and Symptoms of Typhoid

Symptoms include:

High fever
Headache
Stomach pain
Weakness
Loss of appetite
Constipation or diarrhea

If untreated, typhoid can become life-threatening.

Transmission of Typhoid

Typhoid spreads when people:

Drink contaminated water
Eat contaminated food
Fail to wash hands after using toilets

Food vendors using unsafe water or poor hygiene can spread typhoid easily.

Prevention of Typhoid

Prevention measures include:

Safe drinking water
Proper sanitation
Handwashing with soap
Proper cooking of food
Safe food storage
Vaccination where available

3. Dysentery

Meaning of Dysentery

Dysentery is an intestinal infection that causes severe diarrhea with blood or mucus. It is caused by bacteria or parasites.

The disease is strongly associated with poor sanitation and unsafe hygiene conditions.

Signs and Symptoms of Dysentery

Common symptoms include:

Bloody diarrhea
Stomach cramps
Fever
Pain during bowel movement
Dehydration

Children are especially vulnerable to severe dysentery.

Transmission of Dysentery

Dysentery spreads through:

Contaminated food and water
Dirty hands
Poor sanitation
Flies transferring germs to food

Prevention of Dysentery

Prevention methods include:

Proper handwashing
Safe drinking water
Proper toilet use
Covering food properly
Good environmental sanitation

4. Diarrhea

Meaning of Diarrhea

Diarrhea is a condition involving frequent loose or watery stools. It is one of the leading causes of illness and death among children under five in many developing countries.

Diarrhea itself may be caused by several infections linked to unsafe WASH conditions.

Signs and Symptoms of Diarrhea

Symptoms include:

Frequent loose stools
Dehydration
Weakness
Fever
Vomiting
Loss of body fluids

Severe diarrhea can quickly lead to dehydration.

Causes of Diarrhea

Major causes include:

Unsafe drinking water
Poor sanitation
Poor hygiene
Contaminated food
Lack of handwashing

Prevention of Diarrhea

Prevention measures include:

Handwashing with soap
Exclusive breastfeeding for infants
Drinking clean water
Proper sanitation
Safe food handling

Oral Rehydration Solution (ORS) is commonly used to prevent dehydration during diarrhea.

5. Bilharzia

Meaning of Bilharzia

Bilharzia, also called schistosomiasis, is a parasitic disease caused by worms that live in contaminated freshwater.

The disease is common in areas with:

Poor sanitation
Stagnant water
Unsafe water contact

Transmission of Bilharzia

People become infected when they:

Swim
Bathe
Wash clothes
Work in contaminated freshwater

The parasites enter the body through the skin.

Signs and Symptoms of Bilharzia

Symptoms may include:

Blood in urine
Stomach pain
Fever
Fatigue
Swollen abdomen
Difficulty urinating

Long-term infection can damage organs.

Prevention of Bilharzia

Prevention methods include:

Avoiding contaminated water
Improving sanitation
Controlling snails that carry parasites
Providing safe water sources
Health education
Medical treatment programs

Relationship Between WASH and Disease Prevention

Proper WASH services greatly reduce disease transmission.

WASH Service	Disease Prevention Benefit
Clean water	Prevents water contamination
Toilets and sanitation	Reduces open defecation
Handwashing facilities	Stops spread of germs
Waste management	Controls disease vectors
Hygiene education	Promotes healthy behavior

Strong WASH systems are among the most effective public health interventions worldwide.

Practical Example

A village using river water for drinking and practicing open defecation experiences repeated cholera and diarrhea outbreaks.

A WASH intervention introduces:

Boreholes
Toilets
Handwashing stations
Hygiene education

Within months, disease cases reduce significantly, school attendance improves, and medical costs decrease.

This demonstrates the direct connection between WASH and community health.

Conclusion

Waterborne and hygiene-related diseases remain major public health challenges in many parts of the world. Diseases such as cholera, typhoid, dysentery, diarrhea, and bilharzia spread mainly because of unsafe water, poor sanitation, and weak hygiene practices. Effective WASH interventions—including safe water supply, proper sanitation, hygiene promotion, and community education—play a critical role in preventing these diseases and improving public health outcomes.

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Lesson 1.4: Roles and Responsibilities of WASH Workers

Lesson Objectives

By the end of this lesson, learners should be able to:

Explain the roles of different WASH workers.
Describe the responsibilities of hygiene promoters.
Understand the work of community facilitators in WASH programs.
Explain the role of public health officers in disease prevention and environmental health.
Identify the responsibilities of NGO WASH teams during development and humanitarian programs.

Introduction

WASH programs require trained individuals who work together to improve community health, sanitation, and access to safe water. These professionals play an important role in preventing diseases, promoting hygiene behavior, supporting communities, and managing WASH projects.

Different WASH workers have different responsibilities depending on the type of organization, project, and community needs. Some focus on hygiene education, while others manage infrastructure, monitor disease outbreaks, or coordinate emergency responses.

This lesson explains the major roles and responsibilities of hygiene promoters, community facilitators, public health officers, and NGO WASH teams.

1. Hygiene Promoters

Meaning of Hygiene Promotion

Hygiene promotion involves educating and encouraging communities to adopt healthy hygiene behaviors that prevent diseases and improve health.

Hygiene promoters are frontline WASH workers who interact directly with communities to promote safe hygiene practices.

Main Responsibilities of Hygiene Promoters

a. Conducting Hygiene Education

Hygiene promoters teach communities about:

Handwashing with soap
Safe water handling
Food hygiene
Personal cleanliness
Menstrual hygiene
Waste disposal

They may conduct:

Community meetings
School sessions
Door-to-door awareness campaigns
Demonstrations

b. Promoting Behavior Change

One of the main goals of hygiene promoters is changing unsafe behaviors.

For example, they encourage people to:

Stop open defecation
Wash hands after toilet use
Use clean containers for water storage
Keep homes and surroundings clean

Behavior change is important because infrastructure alone cannot prevent diseases if hygiene practices remain poor.

c. Supporting Disease Prevention

Hygiene promoters help reduce outbreaks of:

Cholera
Diarrhea
Typhoid
Dysentery

During disease outbreaks, they may distribute:

Soap
Water treatment chemicals
Hygiene kits
Educational materials

d. Community Awareness Campaigns

Hygiene promoters organize awareness activities such as:

Sanitation campaigns
School health clubs
Radio programs
Community demonstrations

These activities increase public understanding of WASH issues.

2. Community Facilitators

Meaning of Community Facilitation

Community facilitators work closely with local people to strengthen participation, ownership, and cooperation in WASH projects.

They act as a bridge between communities and organizations.

Main Responsibilities of Community Facilitators

a. Mobilizing Communities

Community facilitators encourage communities to participate in:

WASH meetings
Project planning
Construction activities
Hygiene campaigns

Strong community participation improves sustainability.

b. Supporting Community-Led Approaches

Facilitators help communities identify their own problems and solutions.

For example, in Community-Led Total Sanitation (CLTS), facilitators guide communities to analyze the dangers of open defecation and motivate them to improve sanitation practices.

c. Conflict Resolution

Water and sanitation projects may sometimes create disagreements within communities.

Community facilitators help resolve issues related to:

Water point management
Resource sharing
Project ownership
User responsibilities

Good communication skills are important in this role.

d. Building Local Capacity

Facilitators train local groups such as:

Water user committees
Sanitation committees
Community volunteers

This helps communities manage WASH services independently after projects end.

3. Public Health Officers

Meaning of Public Health Officers

Public health officers are trained professionals responsible for protecting and improving community health through environmental health and disease prevention activities.

They often work under government health departments and local authorities.

Main Responsibilities of Public Health Officers

a. Disease Surveillance and Control

Public health officers monitor and respond to disease outbreaks such as:

Cholera
Typhoid
Diarrhea

They collect health data, investigate outbreaks, and coordinate response activities.

b. Environmental Health Inspections

They inspect:

Food markets
Restaurants
Schools
Water sources
Public toilets

The goal is to ensure hygiene and sanitation standards are followed.

c. Water Quality Monitoring

Public health officers may test water sources to check for contamination and ensure water safety.

Unsafe water sources may be closed or treated to protect communities.

d. Health Education

They educate communities on:

Disease prevention
Environmental sanitation
Safe food handling
Waste management

Public health education is essential for reducing disease transmission.

e. Enforcement of Public Health Regulations

Public health officers help enforce laws related to:

Waste disposal
Food hygiene
Sanitation standards
Water safety

This helps maintain public safety and environmental cleanliness.

4. NGO WASH Teams

Meaning of NGO WASH Teams

NGO WASH teams are groups of professionals working for non-governmental organizations to implement WASH projects in communities, schools, health facilities, refugee camps, and disaster-affected areas.

Examples of organizations involved in WASH include:

UNICEF
World Vision
WaterAid

Main Responsibilities of NGO WASH Teams

a. Project Planning and Implementation

WASH teams design and implement projects such as:

Borehole drilling
Toilet construction
Hygiene promotion campaigns
Emergency water supply programs

They ensure projects meet community needs.

b. Emergency Response

During disasters such as floods, droughts, or disease outbreaks, NGO WASH teams provide:

Emergency water supply
Temporary sanitation facilities
Hygiene kits
Water treatment support

Quick response helps prevent disease outbreaks.

c. Monitoring and Reporting

WASH teams monitor project progress and collect data on:

Water access
Sanitation coverage
Hygiene behavior
Disease trends

Reports are shared with donors, governments, and stakeholders.

d. Community Training

NGO WASH teams train communities in:

Facility maintenance
Hygiene practices
Water management
Community leadership

Training improves sustainability and local ownership.

e. Coordination with Stakeholders

WASH teams work closely with:

Government departments
Local leaders
Health facilities
Community groups
Donors

Good coordination improves project effectiveness.

Skills Required for WASH Workers

Effective WASH workers should have:

Skill	Importance
Communication skills	Educating and mobilizing communities
Teamwork	Working with different stakeholders
Problem-solving	Addressing WASH challenges
Leadership	Coordinating activities
Technical knowledge	Understanding WASH systems
Data collection skills	Monitoring project performance

Practical Example

A cholera outbreak occurs in a rural district.

Different WASH workers respond in different ways:

WASH Worker	Responsibility
Hygiene promoter	Educates households on handwashing and water treatment
Community facilitator	Mobilizes communities for sanitation campaigns
Public health officer	Investigates disease cases and monitors water safety
NGO WASH team	Provides emergency water tanks and hygiene kits

Together, these professionals help control the outbreak and protect public health.

Conclusion

WASH workers play a critical role in protecting public health and improving community well-being. Hygiene promoters focus on behavior change and disease prevention, community facilitators strengthen participation and local ownership, public health officers enforce environmental health standards, and NGO WASH teams manage projects and emergency responses. Successful WASH programs depend on teamwork, technical knowledge, community engagement, and strong coordination among all WASH professionals.

Lesson Objectives

By the end of this lesson, learners should be able to:

Define water safety standards and indicators.
Explain water quantity standards used in WASH programs.
Describe safe water access indicators.
Understand basic water quality indicators.
Explain the importance of monitoring water safety standards in communities.

Introduction

Safe water is essential for human health, hygiene, and development. However, simply having water is not enough. The water must be available in adequate quantities, accessible to communities, and safe for human use. To achieve this, governments and WASH organizations use water safety standards and indicators to measure whether communities are receiving safe and sufficient water services.

Water standards help WASH workers assess water supply systems, identify risks, monitor performance, and improve public health outcomes. This lesson focuses on water quantity standards, safe access indicators, and basic water quality principles used in WASH programs.

1. Meaning of Water Safety Standards and Indicators

Water Safety Standards

Water safety standards are official guidelines or requirements used to determine whether water is safe and sufficient for human use.

These standards help ensure that water:

Is safe for drinking
Is available in enough quantities
Is accessible to communities
Does not cause disease

Many standards are guided by organizations such as:

World Health Organization
UNICEF

Water Safety Indicators

Indicators are measurable signs used to assess water service performance and safety.

Indicators help answer questions such as:

Do households have enough water?
Is the water source safe?
How far do people travel to collect water?
Is the water contaminated?

Indicators support monitoring, reporting, and decision-making.

2. Water Quantity Standards

Meaning of Water Quantity Standards

Water quantity standards refer to the recommended amount of water required per person per day to meet basic needs.

People need water for:

Drinking
Cooking
Bathing
Cleaning
Laundry
Sanitation

Insufficient water affects hygiene and increases disease risks.

Minimum Water Requirements

International WASH guidelines recommend minimum daily water amounts for basic survival and hygiene.

Water Need	Approximate Daily Requirement
Drinking only	2–5 liters per person
Basic survival needs	7.5–15 liters per person
Basic domestic needs	20–50 liters per person

The amount needed may increase depending on:

Climate
Age
Health conditions
Physical activity
Household size

Importance of Adequate Water Quantity

Adequate water supply helps communities:

Maintain hygiene
Prevent disease
Cook safely
Clean homes and clothes
Reduce stress and conflicts over water

When water is limited, people may prioritize drinking only and neglect hygiene practices such as handwashing.

Problems Caused by Water Shortages

Water shortages may lead to:

Poor hygiene
Disease outbreaks
Long walking distances
School absenteeism
Gender-related burdens on women and girls

Communities with inadequate water often experience increased diarrheal diseases.

Practical Example

A village receives only 5 liters of water per person daily during drought periods. Families reduce handwashing and bathing, increasing disease transmission.

After installation of additional boreholes, water availability improves and hygiene conditions become better.

3. Safe Access Indicators

Meaning of Safe Access

Safe access refers to the ability of people to obtain safe water easily, reliably, and affordably.

Water access is not only about availability but also about convenience and safety.

Common Safe Access Indicators

a. Distance to Water Source

Communities should not travel excessively long distances to collect water.

Long distances create challenges such as:

Fatigue
Reduced water collection
School absenteeism
Increased burden on women and children

In many WASH standards, water points should ideally be within reasonable walking distance from households.

b. Waiting Time at Water Points

Long queues reduce access efficiency.

Excessive waiting time may:

Reduce productivity
Cause conflicts
Limit water collection

Good water systems reduce congestion and improve accessibility.

c. Reliability of Water Supply

A safe water source should provide water consistently throughout the year.

Reliable systems continue functioning during:

Dry seasons
Emergencies
High demand periods

Frequent breakdowns reduce community confidence and access.

d. Affordability

Water services should be affordable for all households.

High water costs may force poor households to use unsafe water sources.

e. Safety of Water Collection

Water collection points should be safe, especially for women and children.

Unsafe access routes may expose users to:

Violence
Injuries
Animal attacks

Practical Example

A community depends on a river located 5 kilometers away. Women and children spend several hours daily collecting water.

A WASH project later installs boreholes within the village, improving safe access and reducing collection time.

4. Water Quality Basics

Meaning of Water Quality

Water quality refers to the physical, chemical, and biological condition of water.

Good quality water should be:

Safe
Clean
Free from harmful microorganisms
Free from dangerous chemicals

Poor water quality can cause disease outbreaks and long-term health problems.

Types of Water Quality Indicators

a. Biological Indicators

Biological indicators measure the presence of harmful microorganisms.

Common biological contaminants include:

Bacteria
Viruses
Parasites

One important indicator is the presence of fecal contamination.

b. Physical Indicators

Physical indicators relate to the visible appearance and characteristics of water.

Examples include:

Color
Smell
Taste
Turbidity (cloudiness)

Cloudy water may indicate contamination.

c. Chemical Indicators

Chemical indicators assess harmful chemicals in water.

Examples include:

Fluoride
Arsenic
Lead
Nitrates

High chemical levels may affect health.

Characteristics of Safe Drinking Water

Safe drinking water should be:

Characteristic	Description
Clear	No visible dirt or cloudiness
Odorless	No bad smell
Tasteless or normal taste	No unusual taste
Germ-free	No harmful microorganisms
Chemically safe	No harmful chemical levels

Importance of Water Quality Monitoring

Monitoring water quality helps:

Detect contamination early
Prevent disease outbreaks
Improve community health
Protect water sources
Ensure compliance with standards

Water quality monitoring may involve:

Laboratory testing
Community inspections
Observation of water conditions

Role of WASH Workers in Water Safety Monitoring

WASH workers support water safety by:

Conducting inspections
Educating communities
Monitoring water points
Collecting water quality data
Promoting safe hygiene practices
Reporting contamination risks

Community participation is also important for protecting water systems.

Practical Community Scenario

A borehole provides adequate water quantity, but nearby open defecation contaminates the surrounding environment. Water testing later detects bacterial contamination.

A WASH intervention introduces:

Hygiene education
Improved sanitation
Regular water quality monitoring
Community water committees

Water safety improves significantly after these measures are implemented.

Importance of Water Safety Standards in Public Health

Water safety standards help:

Reduce waterborne diseases
Improve sanitation and hygiene
Support sustainable development
Protect vulnerable populations
Strengthen emergency preparedness

Without proper standards and indicators, communities may unknowingly use unsafe water.

Conclusion

Water safety standards and indicators are essential tools for ensuring communities receive safe, sufficient, and accessible water services. Water quantity standards help determine whether households have enough water for daily needs, while access indicators measure convenience, reliability, and affordability. Water quality indicators assess biological, physical, and chemical safety. Effective monitoring of these standards helps protect public health, prevent disease outbreaks, and improve the sustainability of WASH programs.