Of all the diagnostic steps we run, the pressure test is the one that most often saves a homeowner real money — and it’s the one most other companies skip. Here’s what it actually does, why it matters, and how it can keep you from replacing parts you don’t need.

What Pressure Testing Actually Measures

A pressure test isolates a section of your water system — usually the line between the pressure tank and the well — and pressurizes it to see whether it holds. If the pressure stays steady over time, the line is sealed. If pressure drops, water is escaping somewhere. The bigger the drop, the bigger the leak. It’s a simple, definitive test that gives a clear yes-or-no answer about a problem that’s otherwise invisible.

Why It Catches Problems Other Diagnostics Miss

You can test the pump, check the tank, replace the switch, and still have low water pressure — if you have an underground leak between the well and the house. The pump pushes water, but a chunk of it never reaches your faucets. None of the standard diagnostics will catch this unless you actually pressure test the line. We’ve seen homeowners go through two pumps and a new tank before someone finally tested for a leak that had been there the whole time.

The Hidden-Leak Problem

A cracked underground supply line is more common than people realize, especially on properties where the well sits any distance from the house. Tree roots, frost heave, settling, or simple age can all crack a pipe. On a sloped property the leaking water just sheds away — you’ll never see a wet spot in the yard. The only way to find it without digging up the entire run is to pressure test the line. Low water pressure troubleshooting almost always includes this step.

When to Ask for a Pressure Test

You should ask for a pressure test any time someone is recommending a pump replacement, a new pressure tank, or a switch change to solve a low-pressure problem. If pressure keeps dropping after each fix, you almost certainly have a leak that nobody has checked for. New homeowners doing a well inspection before closing on a property should also include pressure testing — it’s one of the cheapest forms of insurance you can buy on a well.

Why It Saves You Money

A pressure test can take a problem from “replace the pump for $1,500” to “dig up and repair eight feet of line for a fraction of that.” Even when the test confirms the pump or tank really is failing, you’ve eliminated the leak as a cause — which means you’re not going to fix the pump and immediately discover a leak you also have to deal with. It’s the difference between an actual diagnosis and a guess.

What It Costs

Pressure testing is a flat $220 plus tax. For a homeowner staring at a quote for a $1,500 pump or a $700 tank, that’s a small price to confirm what the actual problem is. Contact Mad River Well Services if you’ve been quoted a major repair and want to verify the diagnosis first.

Frequently Asked Questions

Does pressure testing damage my system?

No. We test within the system’s normal operating range — nothing destructive.

How long does the test take?

About 20 to 30 minutes once we’re set up. We watch for pressure decay over time, so the clock matters.

What if the test passes?

Great news — we’ve ruled out an underground leak, and we know to look elsewhere for the real cause.

Should I get a pressure test before buying a house with a well?

Absolutely. It’s a small cost compared to inheriting a hidden leak after closing.