Water Problem Diagnostics

Symptom-first diagnostics for pinpointing exactly what is wrong with your water.

Sand in Well Water: Causes and Fixes

Gritty water and sediment in the toilet tank is a mechanical problem, not a filter problem. Here's how to diagnose it.

Black slime looks alarming: sometimes it's your water, sometimes it isn't. Getting the distinction right saves you money.

One question settles this immediately: does the cold water smell too? Usually it's your water heater, not your well.

If both hot and cold smell like rotten eggs, that's hydrogen sulfide from your well, and the fix depends on concentration.