No health-based violations on EPA record since 2016.
Serves about 6,684 people (2,571 connections) with groundwater from its own wells, and buys water from City of Lufkin and City of Huntington.
From EPA's record for TX0030020. PurityMap is independent of Four Way SUD.
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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 January 2024 to July 2024.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Lithium | 16.7 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 | 2024-01-08 to 2024-07-10 | UCMR5 Analytical Results: FOUR WAY SUD (TX0030020) |
| 1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS) | 54.6 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2024-01-08 to 2024-07-10 | UCMR5 Analytical Results: FOUR WAY SUD (TX0030020) |
| 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 | 2024-01-08 to 2024-07-10 | UCMR5 Analytical Results: FOUR WAY SUD (TX0030020) |
| 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 | 2024-01-08 to 2024-07-10 | UCMR5 Analytical Results: FOUR WAY SUD (TX0030020) |
| 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 | 2024-01-08 to 2024-07-10 | UCMR5 Analytical Results: FOUR WAY SUD (TX0030020) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-08 to 2024-07-10 | UCMR5 Analytical Results: FOUR WAY SUD (TX0030020) |
| 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 | 2024-01-08 to 2024-07-10 | UCMR5 Analytical Results: FOUR WAY SUD (TX0030020) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-08 to 2024-07-10 | UCMR5 Analytical Results: FOUR WAY SUD (TX0030020) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-08 to 2024-07-10 | UCMR5 Analytical Results: FOUR WAY SUD (TX0030020) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-08 to 2024-07-10 | UCMR5 Analytical Results: FOUR WAY SUD (TX0030020) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-08 to 2024-07-10 | UCMR5 Analytical Results: FOUR WAY SUD (TX0030020) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-08 to 2024-07-10 | UCMR5 Analytical Results: FOUR WAY SUD (TX0030020) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-08 to 2024-07-10 | UCMR5 Analytical Results: FOUR WAY SUD (TX0030020) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-08 to 2024-07-10 | UCMR5 Analytical Results: FOUR WAY SUD (TX0030020) |
| 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 | 2024-01-08 to 2024-07-10 | UCMR5 Analytical Results: FOUR WAY SUD (TX0030020) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-08 to 2024-07-10 | UCMR5 Analytical Results: FOUR WAY SUD (TX0030020) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-08 to 2024-07-10 | UCMR5 Analytical Results: FOUR WAY SUD (TX0030020) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-08 to 2024-07-10 | UCMR5 Analytical Results: FOUR WAY SUD (TX0030020) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-08 to 2024-07-10 | UCMR5 Analytical Results: FOUR WAY SUD (TX0030020) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-08 to 2024-07-10 | UCMR5 Analytical Results: FOUR WAY SUD (TX0030020) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-08 to 2024-07-10 | UCMR5 Analytical Results: FOUR WAY SUD (TX0030020) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2024-01-08 to 2024-07-10 | UCMR5 Analytical Results: FOUR WAY SUD (TX0030020) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-08 to 2024-07-10 | UCMR5 Analytical Results: FOUR WAY SUD (TX0030020) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-08 to 2024-07-10 | UCMR5 Analytical Results: FOUR WAY SUD (TX0030020) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-08 to 2024-07-10 | UCMR5 Analytical Results: FOUR WAY SUD (TX0030020) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-08 to 2024-07-10 | UCMR5 Analytical Results: FOUR WAY SUD (TX0030020) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-08 to 2024-07-10 | UCMR5 Analytical Results: FOUR WAY SUD (TX0030020) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-08 to 2024-07-10 | UCMR5 Analytical Results: FOUR WAY SUD (TX0030020) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-08 to 2024-07-10 | UCMR5 Analytical Results: FOUR WAY SUD (TX0030020) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-08 to 2024-07-10 | UCMR5 Analytical Results: FOUR WAY SUD (TX0030020) |
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 →Four Way SUD's phone number on EPA record is 936-422-4188. Its mailing address is 411 N MAIN ST, HUNTINGTON, TX 75949-8420.
According to EPA's record, Four Way SUD uses groundwater from its own wells, and buys water from City of Lufkin and City of Huntington.
No health-based violations on EPA record since 2016. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Four Way SUD's latest lead and copper round, which ended in December 2025, was 1.36 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Four Way SUD. Its phone number on EPA record is 936-422-4188. Its mailing address on EPA record is 411 N MAIN ST, HUNTINGTON, TX 75949-8420. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.