No health-based violations on EPA record since 2016.
Serves about 806,997 people (311,310 connections) with surface water from its own intake.
From EPA's record for KY0560258. PurityMap is independent of Louisville Water Company.
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No health-based violations in the last 10 years, from EPA's SDWIS compliance database.
EPA required this system to test for 30 unregulated and emerging contaminants, from February 2023 to November 2023.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluorooctanoic acid (PFOA) | 7.5 ng/L | 4.0 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2023-02-15 to 2023-11-15 | UCMR5 Analytical Results: LOUISVILLE WATER COMPANY (KY0560258) |
| Perfluorobutanesulfonic acid (PFBS) | 3 ng/L | 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit | Within the referenced health-based guidance value | 2023-02-15 to 2023-11-15 | UCMR5 Analytical Results: LOUISVILLE WATER COMPANY (KY0560258) |
| Perfluorohexanoic acid (PFHxA) | 3.6 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Within a historical reference; current applicability unverified | 2023-02-15 to 2023-11-15 | UCMR5 Analytical Results: LOUISVILLE WATER COMPANY (KY0560258) |
| Perfluoropentanoic acid (PFPeA) | 4.1 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2023-02-15 to 2023-11-15 | UCMR5 Analytical Results: LOUISVILLE WATER COMPANY (KY0560258) |
| 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-15 to 2023-11-15 | UCMR5 Analytical Results: LOUISVILLE WATER COMPANY (KY0560258) |
| 1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-15 to 2023-11-15 | UCMR5 Analytical Results: LOUISVILLE WATER COMPANY (KY0560258) |
| 1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-15 to 2023-11-15 | UCMR5 Analytical Results: LOUISVILLE WATER COMPANY (KY0560258) |
| 1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-15 to 2023-11-15 | UCMR5 Analytical Results: LOUISVILLE WATER COMPANY (KY0560258) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-15 to 2023-11-15 | UCMR5 Analytical Results: LOUISVILLE WATER COMPANY (KY0560258) |
| 9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-15 to 2023-11-15 | UCMR5 Analytical Results: LOUISVILLE WATER COMPANY (KY0560258) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-02-15 to 2023-11-15 | UCMR5 Analytical Results: LOUISVILLE WATER COMPANY (KY0560258) |
| Lithium | < 9 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2023-02-15 to 2023-11-15 | UCMR5 Analytical Results: LOUISVILLE WATER COMPANY (KY0560258) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-15 to 2023-11-15 | UCMR5 Analytical Results: LOUISVILLE WATER COMPANY (KY0560258) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-15 to 2023-11-15 | UCMR5 Analytical Results: LOUISVILLE WATER COMPANY (KY0560258) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-15 to 2023-11-15 | UCMR5 Analytical Results: LOUISVILLE WATER COMPANY (KY0560258) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-15 to 2023-11-15 | UCMR5 Analytical Results: LOUISVILLE WATER COMPANY (KY0560258) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-15 to 2023-11-15 | UCMR5 Analytical Results: LOUISVILLE WATER COMPANY (KY0560258) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-15 to 2023-11-15 | UCMR5 Analytical Results: LOUISVILLE WATER COMPANY (KY0560258) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-15 to 2023-11-15 | UCMR5 Analytical Results: LOUISVILLE WATER COMPANY (KY0560258) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-15 to 2023-11-15 | UCMR5 Analytical Results: LOUISVILLE WATER COMPANY (KY0560258) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-15 to 2023-11-15 | UCMR5 Analytical Results: LOUISVILLE WATER COMPANY (KY0560258) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-15 to 2023-11-15 | UCMR5 Analytical Results: LOUISVILLE WATER COMPANY (KY0560258) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-15 to 2023-11-15 | UCMR5 Analytical Results: LOUISVILLE WATER COMPANY (KY0560258) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-02-15 to 2023-11-15 | UCMR5 Analytical Results: LOUISVILLE WATER COMPANY (KY0560258) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-02-15 to 2023-11-15 | UCMR5 Analytical Results: LOUISVILLE WATER COMPANY (KY0560258) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-02-15 to 2023-11-15 | UCMR5 Analytical Results: LOUISVILLE WATER COMPANY (KY0560258) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-15 to 2023-11-15 | UCMR5 Analytical Results: LOUISVILLE WATER COMPANY (KY0560258) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-15 to 2023-11-15 | UCMR5 Analytical Results: LOUISVILLE WATER COMPANY (KY0560258) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-15 to 2023-11-15 | UCMR5 Analytical Results: LOUISVILLE WATER COMPANY (KY0560258) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-15 to 2023-11-15 | UCMR5 Analytical Results: LOUISVILLE WATER COMPANY (KY0560258) |
Screening tells you if something is worth a closer look; a lab result is the number you can act on.
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Screening: quick check, not lab-grade
Safe Home (EnviroTestKits)
Lead, read as one of three ranges: 0–4, 5–15 or 15+ ppb
Turnaround: 5 minutes
What it can't tell you: It shows a lead range, not an exact level, and tests nothing else unless you pay extra for the optional lab test.
Lab-certified results
ETR Laboratories
50+ substances, including lead, copper, arsenic, nitrate, hardness and coliform bacteria
Environmental Testing and Research Laboratories (ETR Labs), Leominster, MA · ISO/IEC 17025:2017, ANAB certificate AT-2638 · 2–4 business days after the lab receives it
What it can't tell you: It does not test PFAS, and not every result on the panel falls under the lab's accredited scope.
Get PurityMap updates about this water system.
Follow this water →Louisville Water Company's phone number on EPA record is 502-271-8873. Its mailing address is 550 SOUTH 3RD ST, LOUISVILLE, KY 40202.
According to EPA's record, Louisville Water Company uses surface water from its own intake.
No health-based violations on EPA record since 2016. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Louisville Water Company's latest lead and copper round, which ended in December 2023, was 1.1 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Louisville Water Company. Its phone number on EPA record is 502-271-8873. Its mailing address on EPA record is 550 SOUTH 3RD ST, LOUISVILLE, KY 40202. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.