This week you need to decide between two technical approaches to address lead concerns in your household water supply in Fayette County, KY. Understanding what public water system records tell you—and what they don’t—is essential to making an informed choice.
If you want to understand how public-system records differ from private-well testing
The lead measurements reported by the Kentucky-American Water Co system, which serves Fayette County, summarize conditions across the treated distribution network, not any single home’s tap or plumbing. The reported lead concentration is a 90th percentile value from plumbing-related sampling, not source water. This means it represents the level below which 90% of samples fall among all tested homes, not a direct reading of your own water. Private-well tests, by contrast, measure the water at your well directly and reflect that specific water source without mixing data from other locations.
If you have a large household, a second home, or a seasonal property
Large or seasonal households may see more variable water use patterns affecting lead release in plumbing. Because public system data aggregates many locations and consumption profiles, your household’s lead exposure could differ from the reported 90th percentile. For second homes or intermittent use, stagnant water in pipes may influence lead levels. These factors highlight why individual water testing is advisable despite the system data.
If you want to interpret 'detected', 'median', and 'range' in this sampling record
The report for Fayette County’s public water system shows a 90th percentile lead of 0 mg/L in samples taken through 2024. This means that in the tested homes, lead was not detected at or above that percentile, but it does not guarantee absence of lead in all taps. ‘Detected’ means a laboratory instrument measured lead above its detection limit, but detection itself does not imply a health violation or unsafe water. The median and range give spread information across samples, but only the 90th percentile is standard for lead regulation compliance.
If you want a worked example: reading the record’s median and range as a homeowner would
For this system, the EPA record specifies the 90th percentile lead concentration as 0 mg/L. Imagine this represents 134,973 connections tested. A 0 mg/L 90th percentile indicates that 90% of samples had lead below the detection threshold used. However, it does not characterize your home’s plumbing or water fixtures. Lead can leach from plumbing materials, so individual testing must check your specific water. This record helps rule out widespread systemic lead problems in the public system but not household-specific issues.
If you wish to know the order in which to rule things out, from cheapest check to laboratory test
- Begin with visual inspection of plumbing materials for lead components or corrosion signs.
- Flush taps to reduce stagnant water exposure and retest if possible.
- Use home lead test kits for an initial screening; note these are less precise but cost-effective.
- Proceed to certified laboratory water analysis for lead to obtain definitive measurement of your household water.
For confirmed lead presence, advanced water treatment options like the Autotrol Lead in Water Filter ship ready to configure and address lead effectively at the tap.
In summary, the Fayette County public water system record covers over 669,000 people served by surface water and shows no elevated 90th percentile lead level as of the latest sampling through 2024. This data represents distribution system sampling, not individual household water quality. To confirm your own water’s lead content, testing of your tap water is essential.
For full public system data, consult the EPA’s Safe Drinking Water Information System public water system record for Kentucky-American Water Co at https://data.epa.gov/efservice/WATER_SYSTEM/PWSID/KY0340250/JSON.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2024-12-31. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA SDWIS record for KENTUCKY-AMERICAN WATER CO (KY0340250), surface water supply, serving 669042 people: 1 health-based violations of 1 total; lead 90th percentile 0 mg/L
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