No open health-based violations on EPA record in the last 10 years.
Serves about 4,277 people (1,707 connections) with groundwater from its own wells, and buys water from Grand Prairie Regional Water.
From EPA's record for AR0000343. PurityMap is independent of Lonoke Waterworks.
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5 health-based violations in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| From March 2025 | Stage 1 Disinfectants and Disinfection Byproducts Rule | – | – | Resolved |
| From February 2025 | Stage 1 Disinfectants and Disinfection Byproducts Rule | – | – | Resolved |
| From January 2025 | Stage 1 Disinfectants and Disinfection Byproducts Rule | – | – | Resolved |
| From December 2024 | Stage 1 Disinfectants and Disinfection Byproducts Rule | – | – | Resolved |
| From November 2024 | Stage 1 Disinfectants and Disinfection Byproducts Rule | – | – | Resolved |
EPA required this system to test for 30 unregulated and emerging contaminants, in May 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 | 2025-05-14 | UCMR5 Analytical Results: LONOKE WATERWORKS (AR0000343) |
| 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 | 2025-05-14 | UCMR5 Analytical Results: LONOKE WATERWORKS (AR0000343) |
| 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 | 2025-05-14 | UCMR5 Analytical Results: LONOKE WATERWORKS (AR0000343) |
| 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 | 2025-05-14 | UCMR5 Analytical Results: LONOKE WATERWORKS (AR0000343) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-14 | UCMR5 Analytical Results: LONOKE WATERWORKS (AR0000343) |
| 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 | 2025-05-14 | UCMR5 Analytical Results: LONOKE WATERWORKS (AR0000343) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-05-14 | UCMR5 Analytical Results: LONOKE WATERWORKS (AR0000343) |
| 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 | 2025-05-14 | UCMR5 Analytical Results: LONOKE WATERWORKS (AR0000343) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-14 | UCMR5 Analytical Results: LONOKE WATERWORKS (AR0000343) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-14 | UCMR5 Analytical Results: LONOKE WATERWORKS (AR0000343) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-14 | UCMR5 Analytical Results: LONOKE WATERWORKS (AR0000343) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-14 | UCMR5 Analytical Results: LONOKE WATERWORKS (AR0000343) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-14 | UCMR5 Analytical Results: LONOKE WATERWORKS (AR0000343) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-14 | UCMR5 Analytical Results: LONOKE WATERWORKS (AR0000343) |
| 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 | 2025-05-14 | UCMR5 Analytical Results: LONOKE WATERWORKS (AR0000343) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-14 | UCMR5 Analytical Results: LONOKE WATERWORKS (AR0000343) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-14 | UCMR5 Analytical Results: LONOKE WATERWORKS (AR0000343) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-14 | UCMR5 Analytical Results: LONOKE WATERWORKS (AR0000343) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-14 | UCMR5 Analytical Results: LONOKE WATERWORKS (AR0000343) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-14 | UCMR5 Analytical Results: LONOKE WATERWORKS (AR0000343) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-05-14 | UCMR5 Analytical Results: LONOKE WATERWORKS (AR0000343) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2025-05-14 | UCMR5 Analytical Results: LONOKE WATERWORKS (AR0000343) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-05-14 | UCMR5 Analytical Results: LONOKE WATERWORKS (AR0000343) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-05-14 | UCMR5 Analytical Results: LONOKE WATERWORKS (AR0000343) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-05-14 | UCMR5 Analytical Results: LONOKE WATERWORKS (AR0000343) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-14 | UCMR5 Analytical Results: LONOKE WATERWORKS (AR0000343) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-14 | UCMR5 Analytical Results: LONOKE WATERWORKS (AR0000343) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-14 | UCMR5 Analytical Results: LONOKE WATERWORKS (AR0000343) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-14 | UCMR5 Analytical Results: LONOKE WATERWORKS (AR0000343) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-14 | UCMR5 Analytical Results: LONOKE WATERWORKS (AR0000343) |
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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 →Lonoke Waterworks's phone number on EPA record is 501-676-2422. Its mailing address is 107 WEST 2ND ST, LONOKE, AR 72086.
According to EPA's record, Lonoke Waterworks uses groundwater from its own wells, and buys water from Grand Prairie Regional Water.
EPA's record shows 5 health-based violations for Lonoke Waterworks in the 10 years to July 9, 2026. No open health-based violations on EPA record in the last 10 years. EPA also lists 1 missed or late test or report in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Lonoke Waterworks'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 Lonoke Waterworks. Its phone number on EPA record is 501-676-2422. Its mailing address on EPA record is 107 WEST 2ND ST, LONOKE, AR 72086. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.