No health-based violations on EPA record since 2016.
Serves about 5,792 people (2,338 connections) with surface water bought from Clarksville Connected Utilities.
From EPA's record for AR0000617. PurityMap is independent of Horsehead Water Association.
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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 2025 to August 2025.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| 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 | 2025-02-26 to 2025-08-13 | UCMR5 Analytical Results: HORSEHEAD WATER ASSOCIATION (AR0000617) |
| 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 | 2025-02-26 to 2025-08-13 | UCMR5 Analytical Results: HORSEHEAD WATER ASSOCIATION (AR0000617) |
| 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 | 2025-02-26 to 2025-08-13 | UCMR5 Analytical Results: HORSEHEAD WATER ASSOCIATION (AR0000617) |
| 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 | 2025-02-26 to 2025-08-13 | UCMR5 Analytical Results: HORSEHEAD WATER ASSOCIATION (AR0000617) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-26 to 2025-08-13 | UCMR5 Analytical Results: HORSEHEAD WATER ASSOCIATION (AR0000617) |
| 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 | 2025-02-26 to 2025-08-13 | UCMR5 Analytical Results: HORSEHEAD WATER ASSOCIATION (AR0000617) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-26 to 2025-08-13 | UCMR5 Analytical Results: HORSEHEAD WATER ASSOCIATION (AR0000617) |
| 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 | 2025-02-26 to 2025-08-13 | UCMR5 Analytical Results: HORSEHEAD WATER ASSOCIATION (AR0000617) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-26 to 2025-08-13 | UCMR5 Analytical Results: HORSEHEAD WATER ASSOCIATION (AR0000617) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-26 to 2025-08-13 | UCMR5 Analytical Results: HORSEHEAD WATER ASSOCIATION (AR0000617) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-26 to 2025-08-13 | UCMR5 Analytical Results: HORSEHEAD WATER ASSOCIATION (AR0000617) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-26 to 2025-08-13 | UCMR5 Analytical Results: HORSEHEAD WATER ASSOCIATION (AR0000617) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-26 to 2025-08-13 | UCMR5 Analytical Results: HORSEHEAD WATER ASSOCIATION (AR0000617) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-26 to 2025-08-13 | UCMR5 Analytical Results: HORSEHEAD WATER ASSOCIATION (AR0000617) |
| Perfluorobutanesulfonic acid (PFBS) | < 3 ng/L | 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2025-02-26 to 2025-08-13 | UCMR5 Analytical Results: HORSEHEAD WATER ASSOCIATION (AR0000617) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-26 to 2025-08-13 | UCMR5 Analytical Results: HORSEHEAD WATER ASSOCIATION (AR0000617) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-26 to 2025-08-13 | UCMR5 Analytical Results: HORSEHEAD WATER ASSOCIATION (AR0000617) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-26 to 2025-08-13 | UCMR5 Analytical Results: HORSEHEAD WATER ASSOCIATION (AR0000617) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-26 to 2025-08-13 | UCMR5 Analytical Results: HORSEHEAD WATER ASSOCIATION (AR0000617) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-26 to 2025-08-13 | UCMR5 Analytical Results: HORSEHEAD WATER ASSOCIATION (AR0000617) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-26 to 2025-08-13 | UCMR5 Analytical Results: HORSEHEAD WATER ASSOCIATION (AR0000617) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2025-02-26 to 2025-08-13 | UCMR5 Analytical Results: HORSEHEAD WATER ASSOCIATION (AR0000617) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-26 to 2025-08-13 | UCMR5 Analytical Results: HORSEHEAD WATER ASSOCIATION (AR0000617) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-26 to 2025-08-13 | UCMR5 Analytical Results: HORSEHEAD WATER ASSOCIATION (AR0000617) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-26 to 2025-08-13 | UCMR5 Analytical Results: HORSEHEAD WATER ASSOCIATION (AR0000617) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-26 to 2025-08-13 | UCMR5 Analytical Results: HORSEHEAD WATER ASSOCIATION (AR0000617) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-26 to 2025-08-13 | UCMR5 Analytical Results: HORSEHEAD WATER ASSOCIATION (AR0000617) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-26 to 2025-08-13 | UCMR5 Analytical Results: HORSEHEAD WATER ASSOCIATION (AR0000617) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-26 to 2025-08-13 | UCMR5 Analytical Results: HORSEHEAD WATER ASSOCIATION (AR0000617) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-26 to 2025-08-13 | UCMR5 Analytical Results: HORSEHEAD WATER ASSOCIATION (AR0000617) |
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 →Horsehead Water Association's phone number on EPA record is 479-214-1124. Its mailing address is 4969 HWY 103, CLARKSVILLE, AR 72830.
According to EPA's record, Horsehead Water Association uses surface water bought from Clarksville Connected Utilities.
No health-based violations on EPA record since 2016. EPA also lists 5 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Horsehead Water Association's latest lead and copper round, which ended in December 2025, was 1 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Horsehead Water Association. Its phone number on EPA record is 479-214-1124. Its mailing address on EPA record is 4969 HWY 103, CLARKSVILLE, AR 72830. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.