Safe Water Supply, Source Protection and Purification Methods

Water, Sanitation, and Maternal Health in Nigeria

Access to safe drinking water is a fundamental human right and a cornerstone of maternal and child health. In many parts of Nigeria, pregnant women and nursing mothers bear the heavy daily burden of fetching water from distant, often contaminated sources. This physical strain alone poses risks of musculoskeletal injury and preterm labor. Beyond physical exertion, the lack of clean water and basic sanitation directly drives the high burden of waterborne infectious diseases. When healthcare facilities lack reliable water supplies, infection prevention and control protocols collapse. Midwives working in primary health care centres witness firsthand how poor water sanitation compromises clean delivery practices, leading directly to preventable postpartum infections, neonatal sepsis, and maternal mortality. Addressing water safety is therefore not just an environmental issue, but a core midwifery priority.

Safe Drinking Water Sources

Classifying water sources helps communities and health workers identify which supplies are fit for consumption and which require immediate treatment. Water is generally categorized based on its origin and potential exposure to contaminants.

• Protected springs: Natural outlets where groundwater flows to the surface, enclosed by masonry or concrete boxes to prevent surface runoff contamination.
• Boreholes: Deep wells drilled into groundwater aquifers, typically fitted with handpumps or motorized pumps, offering safer water shielded from surface pollutants.
• Rainwater harvesting systems: Collected clean runoffs from roofs stored in covered tanks, though vulnerable to atmospheric and roof dust if the first flush is not discarded.
• Surface water: Rivers, streams, lakes, and ponds exposed to animal waste, agricultural runoff, and human activity, requiring extensive purification before use.

Source Protection Techniques

Preventing contamination at the source is vastly more effective and economical than treating polluted water downstream. For groundwater sources like boreholes and protected wells, sanitation barriers must be established around the perimeter.

1. Sanitary seals: Ensure the concrete apron surrounding a borehole or wellhead slopes away from the opening to prevent dirty wastewater from flowing back down the casing.
2. Perimeter fencing: Keep livestock and domestic animals at least thirty meters away from water collection points to reduce fecal contamination risks.
3. Dedicated containers: Prohibit the dipping of personal, potentially dirty fetching buckets directly into community storage wells; instead, use dedicated pumps or spouts.
4. Drainage channels: Construct proper runoff drainage away from water points to prevent stagnant pools that breed mosquitoes and seep back into the aquifer.

Water Purification Methods at Household and Community Levels

When safe sources are unavailable, water must be purified before consumption, especially for vulnerable groups like pregnant women and infants. Simple, low-cost household water treatment (HWTT) methods empower families to take charge of their health.

• Boiling: Bringing water to a rolling boil for at least one minute effectively kills all pathogenic bacteria, viruses, and parasites. It requires fuel, which can be scarce or expensive.
• Chemical disinfection: Using sodium hypochlorite or chlorine tablets destroys harmful microorganisms. Water must be left to stand for thirty minutes before drinking.
• Solar disinfection (SODIS): Filling transparent plastic bottles with clear water and exposing them to direct sunlight for six hours utilizes UV radiation and heat to kill pathogens.
• Filtration: Passing water through ceramic, sand, or membrane filters physically traps suspended particles and larger microorganisms.

Microbiological and Chemical Hazards in Obstetrics

Contaminated water introduces numerous pathogens and toxic chemicals that pose severe threats during pregnancy. Microbiological hazards include bacteria like *Vibrio cholerae* and *Escherichia coli*, protozoa such as *Giardia*, and viruses like Hepatitis E, which carries a notoriously high mortality rate in pregnant women due to altered immune and hormonal states. Severe diarrheal disease from these pathogens rapidly induces maternal dehydration, hypovolemic shock, reduced uteroplacental perfusion, and subsequent fetal distress or preterm delivery. Chemical hazards, such as excessive nitrates from agricultural fertilizers, can cause methemoglobinemia in newborns, impairing oxygen transport in the blood. Heavy metals like lead, often leached from old plumbing or contaminated soil, increase the risk of spontaneous abortion, intrauterine growth restriction, and neurological damage in the developing fetus.

The Midwife's Role in Promoting Water Safety

Midwives are trusted community health leaders whose influence extends far beyond the delivery room. During antenatal care (ANC) health talks, midwives must actively educate women on safe water handling, storage, and household purification techniques. When visiting communities or conducting home-based postnatal care, midwives can assess local water sources and identify practices that put mothers and newborns at risk. In maternity clinics, midwives must advocate for functional water points, proper waste disposal, and clean sanitation facilities. By collaborating with local leaders and environmental health officers, midwives help bridge the gap between clinical care and community health, ensuring that safe water becomes a reality for every mother and newborn.