To test water for lead you have to sample the water the way you actually drink it, because lead comes from your own pipes rather than from the source. Water that has stood in a lead service line overnight and water drawn after a five minute flush are two entirely different results from the same tap, and a test that ignores that difference tells you very little.
The first-draw sample
The standard household protocol is a first-draw sample: leave the tap completely unused for several hours, typically overnight, then fill the sample bottle from the cold kitchen tap without flushing first, without removing the aerator and without running the tap to get cold water. That captures the water that has been sitting in contact with your plumbing, which is the worst case and the one that matters. Some programs also ask for a flushed sample afterwards to show whether the lead is coming from the fixture, the household plumbing, or the service line out in the street.
Certified lab or home kit
A certified laboratory analysis is the result you can act on. The lab supplies the bottles and the written protocol, and the number that comes back is defensible enough to take to a landlord, a utility or a buyer. Home color-change strips are cheap and immediate, but they are screening tools with a detection threshold that can easily miss levels worth acting on, and a reassuring color is not evidence of safety. Use a kit to satisfy curiosity, use a lab to make a decision. Many state and county health departments list certified labs and some offer subsidized testing for households with young children.
What your utility can and cannot tell you
Every community water system publishes an annual Consumer Confidence Report, and the EPA maintains a finder for those reports. It tells you what the system found across its own sampling sites and whether your utility has treatment in place for corrosion control, which is genuinely useful context. What it cannot tell you is what is coming out of your tap, because that depends on your service line and your household plumbing. Many utilities now publish service line material maps and some offer free lead test kits to customers, so calling them is a sensible first move before you pay anyone.
Wells and what to do with the result
Private wells are not regulated under the Safe Drinking Water Act, so there is no utility report and no free program: the owner pays for the lab and sets the schedule. Lead on a well still comes from the plumbing and the pump components rather than the aquifer, so the same first-draw protocol applies. If the result comes back with lead present, flush before drawing, use cold water only for drinking and cooking, fit a certified point of use filter at the kitchen tap, and ask about service line replacement. Our test well water near me page covers arranging a full panel while you are at it.
Questions people ask about test water for lead
How long should the tap sit before a lead sample?
Several hours with no use in the house, typically overnight. The point is to capture water that has been standing in contact with your pipes and fixtures.
Are home lead test strips reliable?
They are screening tools only. Their detection threshold can miss levels worth acting on, so a negative strip is not evidence of safety. Use a certified lab for a decision.
Does my utility's annual report tell me my lead level?
No. It reports the system's own sampling results, not your tap. Lead is picked up in your service line and household plumbing, which only a sample at your tap can measure.
Should I remove the aerator before sampling?
No. Standard first-draw protocol leaves the aerator in place, since debris trapped there is part of what your household actually drinks.