The Pump Six Metres from the Latrine
Babul's compound in a flood-prone village has a hand pump and, six metres away and slightly uphill, a pit latrine dug two years ago. The cattle shed drain runs within three metres of the pump, and during last year's flood the pump's platform stayed under water for five days. Household water is stored in a wide-mouthed earthen pot covered with a cloth; everyone dips a steel glass into it, and the same glass is used by the children after they come in from the field. Two children in the family had loose motions last month, and the ASHA recorded three more cases in the lane. Behind the house there is a heap of refuse, and discarded tyres and broken pots in the yard have held rainwater for three weeks. The village has Rs 12,000 in a sanitation fund for one action in this household.
1. Trace how drinking water in this compound could get contaminated. Name two pathways and explain why the pump–latrine distance and slope matter, including the effect of flooding.
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Pathway 1 - subsurface seepage. Liquid from the pit moves through the soil and can reach the water drawn by the pump. The usual rule is a separation of at least 10–15 m between a latrine and a drinking-water source, with the latrine downhill of the source. Here the gap is only 6 m and the latrine is slightly uphill, so both parts of the rule are broken and seepage is directed towards the pump.
Pathway 2 - dipping and handling. Water sits in a wide-mouthed pot under a cloth that seals nothing. The same steel glass is dipped by children coming in from the fields, so whatever is on their hands - soil, animal waste, faecal matter - goes straight into drinking water shared by the whole family.
Effect of flooding: when the platform stays under water for five days, floodwater mixed with latrine contents, refuse and drain water stands around the pump head. It can enter the casing and the suction line and contaminate the water directly, and every bucket drawn during those days is unsafe. Flooding converts a slow seepage problem into an immediate one, which fits the cluster of diarrhoea cases recorded in the lane.
2. Rank four possible actions - chlorine tablets and safe storage pots, raising and cementing the pump platform, clearing refuse and emptying the tyres, rebuilding the latrine 15 m away and downhill - and state what the Rs 12,000 should be spent on first, with justification.
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Recommended first spend: raise and cement the pump platform with drainage, and pair it with safe storage - a narrow-mouthed pot with a tap, or a covered pot with a long-handled ladle. This tackles the two biggest active risks, floodwater at the pump head and the dipping glass, before the next monsoon.
Ranking and reasoning:
- Raised, cemented platform (with safe storage) - removes direct contamination during floods; high impact, affordable, and possible before the next season.
- Clearing refuse and emptying, scrubbing and inverting the tyres and pots - costs almost nothing and stops mosquito breeding, fly and rodent shelter; this is household and community work, not a call on the fund.
- Chlorine tablets and boiling - useful but only a stopgap. Treatment does not remove the source, and water treated at home can be recontaminated by dipping.
- Rebuilding the latrine 15 m away and downhill - the correct long-term answer, but costly and slow; plan it for the next phase with a larger fund or a government scheme.
The principle is to spend first on the hazard that is active now and can be fixed within the money available.
3. Describe how the family should treat and store water at home during the flood, and give one sign that would show whether mosquito breeding is being controlled.
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Treatment: if the water is cloudy, strain it through a clean folded cloth first. Then bring it to a rolling boil for one to two minutes in a covered pot (covering saves fuel), or add chlorine tablets at the dose printed on the packet, usually one tablet per litre, and wait 30 minutes before drinking. Water must not be recontaminated after treatment - no dipping of used glasses, no storing next to the latrine or cattle shed.
Storage: keep treated water in a narrow-mouthed, covered container with a tap, or use a ladle with a long handle kept only for water. Place the pot on a stand, not on the floor; never dip hands or a used glass; clean the pot weekly with hot water and dry it in the sun.
Sign of mosquito control: look for wrigglers (larvae) in the tyres and pots. If no larvae appear within a week after the containers are emptied, scrubbed, dried and stored inverted or filled with sand, breeding is being controlled. The overhead tank, drains and any open container should be checked the same way.