The economics of a community water pump: what actually happens to a lane once the queue disappears

Around 3,000 people in Indira Gandhi Camp, Kasturba Nagar, now have water at their doorstep because a community pump was installed inside the settlement. The intervention was not expensive. It was not technically complicated. It saves the average household in that lane roughly two hours a day and a few hundred rupees a month in tanker fees. It had simply never been anyone's job.

This article is an attempt to open up the economics of a community water pump in enough detail to be useful. What it actually costs to put one in, what it changes for a household, what the per-beneficiary arithmetic looks like, why it is a better use of philanthropic capital than a subsidy or an awareness campaign, and what can go wrong. The numbers below are drawn from our own installation. They will vary in other settlements. The order of magnitude will not.

What a community water pump actually is

In an unplanned Delhi settlement, a community pump is usually a small electric submersible or a jet pump connected to a groundwater source or a municipal line where one is available at the boundary of the settlement. The pump sits inside the lane it serves, on a raised concrete plinth, protected from weather. It is connected to a shared tap point or, in the better cases, to a short distribution stub that feeds a handful of household connections a few metres away.

Siting is the most consequential decision. The pump has to sit close enough to a household cluster that a five-year-old can reach it with a pitcher, but far enough from the nearest bore or leak-prone connection that it does not draw down a neighbour's supply. In practice, siting is a conversation with residents. The engineering is easier than the politics.

What the intervention actually costs

Rough breakdown of what a community pump installation in a Delhi camp looks like as a set of line items. Individual costs vary with local conditions, existing infrastructure, and negotiated rates. The structure of the spending does not.

• Site survey and community meetings. A trip or two to agree on the site, the households served, and the person or people who will hold operational responsibility after handover.
• Groundwater or connection assessment. Making sure the source can actually meet daily demand at peak times, and that the connection point is not going to create a dispute with an adjacent supply.
• Pump hardware. The pump itself, control panel, pressure switch, non-return valve, and cabling. This is the largest single line item.
• Plumbing. Pipe from source to pump, from pump to distribution point, tap fittings, and any short household connection stubs.
• Civil work. The plinth, a protective enclosure, drainage around the tap so the surrounding ground does not turn to mud.
• Electricity connection or metering. Where the pump cannot be run off a resident's existing connection, a dedicated supply arrangement.
• Installation labour. The plumber, the electrician, and someone on site to coordinate the day.
• Handover documentation. A written agreement with whoever holds operational responsibility, a spare parts list, and contact numbers for the plumber and the electrician.

All of this together, for a pump serving somewhere between five hundred and three thousand people, comes to a figure most private donors would recognise as smaller than a mid-range annual charitable commitment. It is well within a modest CSR budget. It is inside a single small family's discretionary giving envelope.

What it saves each household

Three types of savings, each measurable.

Time

Before the pump, collecting water in Indira Gandhi Camp took most households between one and a half and two and a half hours a day, spread across two or three trips depending on family size and how early someone was willing to wake up. After the pump, the trip is a thirty-second walk to a tap that works. Assume, conservatively, two hours a day saved per household. Multiplied by six days a week, fifty weeks a year, that is six hundred hours per household per year. Across the six hundred households the pump serves, it is roughly 360,000 person-hours a year of returned time.

Most of that time went to women. A meaningful share went to older children who now stay in school through the morning.

Money

When municipal supply fails and there is no fixed alternative, households buy from private tankers. Delhi's tanker rates for a small household drum run into the low hundreds of rupees per delivery, with several deliveries a month on a bad month. A conservative estimate for the pump's monthly saving to an average household is one hundred and fifty to three hundred rupees. That is a few thousand rupees a year that stays in a household earning ten to twenty thousand rupees a month.

Health

Municipal water in Delhi is of variable quality. Tanker water is worse. A community pump drawing from a properly assessed source, with a clean tap, meaningfully reduces the incidence of waterborne illness in a household. This effect is real but we do not quantify it in our reporting because we did not measure it. It should be assumed to be a further gain on top of the time and money numbers.

Cost per beneficiary, honestly stated

The per-beneficiary cost of a community water pump depends on how you count. Three ways of thinking about it are useful.

Capital cost per person served on day one. Take the installation cost and divide by the population served immediately. For a pump serving 3,000 people in Indira Gandhi Camp, this comes out to a low double-digit rupee figure per person, one-time.

Amortised cost per person per year. Take the same capital cost, amortise over a conservative asset life of ten years, add an annual maintenance provision, and divide by the population. The per-person annual cost is a small single-digit rupee figure.

Cost per hour of time returned. Take the amortised annual cost and divide by the total person-hours saved by the installation each year. The per-hour cost of returned time is a very small fraction of a rupee. This is the number that makes a community pump look uniquely good next to almost every other water intervention.

Why this beats a subsidy or an awareness campaign

Both subsidies and awareness campaigns have their place. Neither is a substitute for a physical asset at the point of use.

A tanker subsidy immediately reduces household spending on water. The moment it ends, the queue and the fee return. From an impact per rupee perspective, a subsidy delivers relief only for the period it is funded. There is no residual asset.

An awareness campaign changes what people know. In a settlement where the problem is not that residents fail to appreciate water's scarcity (they collect it by hand every morning) but that the tap is not in the right place, information is not the binding constraint. Awareness campaigns work well upstream, at the level of household appliance choice or industrial waste. In a basti, they land against a wall of lived experience.

A community pump costs more upfront than an equivalent-year subsidy or campaign. It pays back in year one and continues paying back every year after that, as long as the maintenance stays honest.

The maintenance question

Most community water infrastructure that fails, fails at maintenance. A pump that runs for six years and then sits broken for another five is not a success. Two questions decide whether the asset lasts.

Who runs it after handover. In our model, ownership transfers to the residents. A named individual or a small group holds the key to the enclosure, the spare parts, and the plumber's number. There is no ongoing role for the foundation.

Where the money for repairs comes from. Households typically pool a small monthly contribution for electricity and minor repairs. Where the pump feeds household connections, the small contribution comes naturally. Where it feeds a shared tap, the collection needs a slightly more deliberate structure. Either way, it is a small amount at the household level and does not require external funding.

A pump handed over well outlasts a pump maintained by the funder. The residents have a much better reason than we do to keep it running.

What can go wrong, and how we plan for it

• Source dries up. Groundwater in some Delhi pockets is under stress. We site pumps only where the source has been assessed to sustain year-round demand.
• Dispute over usage. A new supply in a lane changes who has easy access to water and can create local politics. We insist on a public site meeting before installation and a written record of the households the pump is intended to serve.
• Pump fails outside warranty. A modest maintenance fund at the community level, plus a documented plumber and electrician, tends to keep small failures from becoming permanent.
• Ownership fights. Handover to a small named group rather than a single individual reduces the risk of the pump becoming private property.
• Electricity supply issues. We prefer pumps that can be run off a resident's existing meter with reimbursement rather than a dedicated line that becomes a bureaucratic dependency.

What this looks like at scale

One pump helps one lane. Delhi has hundreds of lanes with the same structural problem. There is no technical obstacle to installing dozens of pumps a year across Delhi's underserved settlements. The constraints are:

• Trusted survey capacity to site each pump correctly
• Relationships with the plumbers, electricians, and hardware suppliers who can execute reliably at modest cost
• Follow-through on handover documentation and community structure so each pump lasts a decade rather than a season
• Funding

Of these four, the fourth is the one that responds directly to a donation. A committed annual budget in the low tens of lakhs, held over three years, turns into a step change in water access across the neighbourhoods we currently work in.

Why we lead with this programme

A community water pump is the clearest example of what we ask funders to buy. A defined problem in a named place. A physical fix. A countable set of people better off. An asset that stays with the community after we have gone. Reporting that says what happened, not what we hope will happen.

If you would like to fund the next pump, or three pumps, or a year of pumps, our support page has bank and UPI details for individual donors with 80G receipting, and our CSR partnerships page has the full pack for a CSR committee. The wider case for physical water infrastructure in Delhi is in our post on Delhi's water access problem.