Identify the system
Confirm the current provider and PWSID or document that the property uses a private well.
Lead at the tap is often influenced by service lines, solder, fixtures, stagnation time and corrosion control rather than source water alone.
Use an appropriate first-draw or sequential sampling protocol and a certified laboratory.
Lead at the tap is often influenced by service lines, solder, fixtures, stagnation time and corrosion control rather than source water alone.
The same symptom can have more than one cause. Utility records help organize the investigation, but a private well, service line, water heater, building plumbing or existing treatment equipment can change the result at the tap.

Confirm the current provider and PWSID or document that the property uses a private well.
Use an appropriate first-draw or sequential sampling protocol and a certified laboratory.
Source control, service-line replacement, flushing and certified point-of-use treatment can play different roles.
Share the provider, test result, source type and symptom. A representative can help organize testing and treatment questions.
No. Statewide or city-level information cannot establish the condition at every property. Verify the provider or well and use an appropriate test when the decision depends on the actual tap.
No. A ZIP search can identify possible utilities, but it does not establish the supplier, service boundary, sample point or condition inside the building.
Use an appropriate first-draw or sequential sampling protocol and a certified laboratory.
No. Treatment technologies, media and certifications cover different functions. Match the exact model to the verified target, capacity, flow and maintenance conditions.