No open health-based violations on EPA record in the last 10 years; latest legal-limit breach in the period starting July 2017.
Serves about 7,989 people (2,663 connections) with groundwater from its own wells, and buys water from Texarkana Water Utilities, Lamar County Water Supply District, 410 Water Supply and 2 more.
From EPA's record for TX1940008. PurityMap is independent of Red River County WSC.
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6 health-based violations in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| Jul–Sep 2017 | Haloacetic acids (HAA5) | 0.063 mg/L | 0.060 mg/L | Resolved |
| Jul–Sep 2017 | Total trihalomethanes (TTHM) | 0.094 mg/L | 0.080 mg/L | Resolved |
| Apr–Jun 2017 | Total trihalomethanes (TTHM) | 0.114 mg/L | 0.080 mg/L | Resolved |
| Apr–Jun 2017 | Haloacetic acids (HAA5) | 0.064 mg/L | 0.060 mg/L | Resolved |
| Jan–Mar 2017 | Total trihalomethanes (TTHM) | 0.103 mg/L | 0.080 mg/L | Resolved |
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| Oct–Dec 2016 | Total trihalomethanes (TTHM) | 0.103 mg/L | 0.080 mg/L | Resolved |
EPA required this system to test for 30 unregulated and emerging contaminants, from May 2025 to June 2025.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Lithium | 43.1 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit | Above the referenced health-based guidance value | 2025-05-19 to 2025-05-20 | UCMR5 Analytical Results: RED RIVER COUNTY WSC (TX1940008) |
| 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 | 2025-05-19 to 2025-06-17 | UCMR5 Analytical Results: RED RIVER COUNTY WSC (TX1940008) |
| 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 | 2025-05-19 to 2025-06-17 | UCMR5 Analytical Results: RED RIVER COUNTY WSC (TX1940008) |
| 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 | 2025-05-19 to 2025-06-17 | UCMR5 Analytical Results: RED RIVER COUNTY WSC (TX1940008) |
| 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 | 2025-05-19 to 2025-06-17 | UCMR5 Analytical Results: RED RIVER COUNTY WSC (TX1940008) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-19 to 2025-06-17 | UCMR5 Analytical Results: RED RIVER COUNTY WSC (TX1940008) |
| 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 | 2025-05-19 to 2025-06-17 | UCMR5 Analytical Results: RED RIVER COUNTY WSC (TX1940008) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-05-19 to 2025-06-17 | UCMR5 Analytical Results: RED RIVER COUNTY WSC (TX1940008) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-19 to 2025-06-17 | UCMR5 Analytical Results: RED RIVER COUNTY WSC (TX1940008) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-19 to 2025-06-17 | UCMR5 Analytical Results: RED RIVER COUNTY WSC (TX1940008) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-19 to 2025-06-17 | UCMR5 Analytical Results: RED RIVER COUNTY WSC (TX1940008) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-19 to 2025-06-17 | UCMR5 Analytical Results: RED RIVER COUNTY WSC (TX1940008) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-19 to 2025-06-17 | UCMR5 Analytical Results: RED RIVER COUNTY WSC (TX1940008) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-19 to 2025-06-17 | UCMR5 Analytical Results: RED RIVER COUNTY WSC (TX1940008) |
| 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 | 2025-05-19 to 2025-06-17 | UCMR5 Analytical Results: RED RIVER COUNTY WSC (TX1940008) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-19 to 2025-06-17 | UCMR5 Analytical Results: RED RIVER COUNTY WSC (TX1940008) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-19 to 2025-06-17 | UCMR5 Analytical Results: RED RIVER COUNTY WSC (TX1940008) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-19 to 2025-06-17 | UCMR5 Analytical Results: RED RIVER COUNTY WSC (TX1940008) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-19 to 2025-06-17 | UCMR5 Analytical Results: RED RIVER COUNTY WSC (TX1940008) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-19 to 2025-06-17 | UCMR5 Analytical Results: RED RIVER COUNTY WSC (TX1940008) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-05-19 to 2025-06-17 | UCMR5 Analytical Results: RED RIVER COUNTY WSC (TX1940008) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2025-05-19 to 2025-06-17 | UCMR5 Analytical Results: RED RIVER COUNTY WSC (TX1940008) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-05-19 to 2025-06-17 | UCMR5 Analytical Results: RED RIVER COUNTY WSC (TX1940008) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-05-19 to 2025-06-17 | UCMR5 Analytical Results: RED RIVER COUNTY WSC (TX1940008) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-05-19 to 2025-06-17 | UCMR5 Analytical Results: RED RIVER COUNTY WSC (TX1940008) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-19 to 2025-06-17 | UCMR5 Analytical Results: RED RIVER COUNTY WSC (TX1940008) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-19 to 2025-06-17 | UCMR5 Analytical Results: RED RIVER COUNTY WSC (TX1940008) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-19 to 2025-06-17 | UCMR5 Analytical Results: RED RIVER COUNTY WSC (TX1940008) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-19 to 2025-06-17 | UCMR5 Analytical Results: RED RIVER COUNTY WSC (TX1940008) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-19 to 2025-06-17 | UCMR5 Analytical Results: RED RIVER COUNTY WSC (TX1940008) |
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 →Red River County WSC's phone number on EPA record is 903-427-2891. Its mailing address is 1404 E MAIN ST, CLARKSVILLE, TX 75426-4231.
According to EPA's record, Red River County WSC uses groundwater from its own wells, and buys water from Texarkana Water Utilities, Lamar County Water Supply District, 410 Water Supply and 2 more.
EPA's record shows 6 health-based violations for Red River County WSC in the 10 years to July 9, 2026. No open health-based violations on EPA record in the last 10 years. The latest legal-limit breach on record was in the period starting July 2017. EPA also lists 14 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
Lead was not detected at the 90th percentile of tap samples in Red River County WSC's latest lead and copper round, which ended in December 2024. The federal action level is 15 µg/L.
PurityMap has no verified website for Red River County WSC. Its phone number on EPA record is 903-427-2891. Its mailing address on EPA record is 1404 E MAIN ST, CLARKSVILLE, TX 75426-4231. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.