Looking down the borewell

Survey complete. The camera went down on 14 October 2026 and everything below is what it found. Choosing the pump off the back of it turned into its own story — that is a separate entry, Choosing the pump.

Everything we knew about this borewell until today came from one man watching water come out of a hole and telling us what he reckoned. He has done it for years and we had no reason to doubt him. But it was still an account, not a measurement, and we were about to spend real money on the strength of it.

So before choosing a pump, we put a camera down the hole.

What came back

Two hundred and twenty feet of standing water in the hole. That is a reassuring thing to look at.

Where it agrees with the driller

The casing is exactly where the bill said it was — 185 feet. We had been charged for 185 feet of steel and there are 185 feet of steel in the ground. That sounds like a low bar, and in this trade it is not nothing.

The 310 ft source is real. This was the one the driller singled out as coming up under noticeably higher pressure, and it is the reason he stopped where he did. The camera found it where he said it would be.

Where it does not

Two corrections, neither alarming, both worth having.

Three sources became two. We were told 190, 240 and 310. The camera showed 250 and 310. The 240 and the 250 are almost certainly the same thing — ten feet is well inside the margin between a rod count on a rig and a cable count on a camera winch. The 190 ft source is the one we did not see.

That does not necessarily mean it is not there. The standing water level is at 100 feet, so everything below that is being filmed through water. A gentle seep entering below the waterline can be genuinely invisible — there is no splash, no plume, nothing for a camera to catch. So the honest statement is not "the 190 source does not exist". It is "we could not confirm it, and we are no longer planning as though it does."

The hole is five feet shallower than it was drilled. Drilled to 325, reads 320 today. Some of that could be the difference between measuring with rods and measuring with a cable. But we also saw silt down there, so the simpler explanation is probably the right one: the well has already begun to fill in from the bottom. Three months, five feet.

The thing we are actually uneasy about

At 310 feet — at the main source, the good one — there is silt, and there are loose boulders.

That is a fragile place for the best water in the well to be coming from. Loose material can shift. It can be disturbed. And boreholes in this area are not rare: if somebody drills a few hundred feet away and hits the same zone, there is a real possibility of the fracture being disturbed, or simply shared.

We cannot do anything about a neighbour's borewell, and we are not claiming to know how likely this is — we are not hydrogeologists and this is a worry, not a finding. But it is the single piece of information from today that changes how we think about the long run, and it is the reason the next three decisions look the way they do.

What we are buying, and why

Every one of these follows from something on that table. That is the whole point of having looked.

The pump sits at 300 feet.

Not at the bottom, and not at the best source. Setting at 300 puts the intake twenty feet clear of the silt that is already accumulating, with two hundred feet of water above it at rest. The 310 ft source feeds up into it; the 250 ft source is above it and feeds down. A pump sitting in silt is a pump you will be pulling out and cleaning, and every pull costs money and risks the column.

Heavier gauge column pipe than we strictly need today.

The pipe that carries water up from the pump takes a beating — the weight of the column, the pull when it comes out, years of wet. The heavier gauge costs more now. It survives being pulled and reset, which matters because a well that is silting from the bottom and drawing from a loose zone is a well we may well have to go back into. If this hole ever has to be deepened or re-drilled, we would rather not be buying pipe twice.

A starter with dry-run protection.

This one is not optional and we would argue nobody should treat it as such.

A submersible pump is cooled by the water it is pumping. Run it in an empty hole and it is not inefficient, it is destroyed, quickly. Dry-run protection cuts the motor when the level drops to the intake instead of letting it cook.

And look at what we do not know. We have a yield that was called by eye at the end of a monsoon. We have no pumping test. We have a main source sitting in loose material, and a bottom that is filling in. Every one of those is a reason the water might not be where we expect it one afternoon in April. Dry-run protection is the cheap insurance against the one failure that writes off the expensive part.

Still open

• The pump itself. Quotes came in the next day and comparing them turned out to be an education — see Choosing the pump.
• A proper yield test. Still the number that matters most and still the one we do not have. Once a pump is in, we can finally measure instead of estimate.
• Water quality. The water came up slightly cloudy on camera, which is ordinary for a well that has never been pumped and usually clears once it has been. "Usually" is doing some work in that sentence, so it gets tested.

What the camera was worth

A few thousand rupees and an afternoon, against a pump going in at the wrong depth into a hole we had never seen.

We would do it again without thinking about it. Not because the driller was wrong — he was mostly right — but because mostly right is not a basis for choosing where to hang an expensive motor for the next ten years.