No health-based violations on EPA record since 2016.
Serves about 8,775 people (2,925 connections) with surface water bought from City of Tyler, Southern Utilities and North Cherokee WSC.
From EPA's record for TX2120024. PurityMap is independent of Walnut Grove WSC.
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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 2025 to July 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 | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: WALNUT GROVE WSC (TX2120024) |
| 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 | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: WALNUT GROVE WSC (TX2120024) |
| 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 | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: WALNUT GROVE WSC (TX2120024) |
| 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 | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: WALNUT GROVE WSC (TX2120024) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: WALNUT GROVE WSC (TX2120024) |
| 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 | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: WALNUT GROVE WSC (TX2120024) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: WALNUT GROVE WSC (TX2120024) |
| 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 | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: WALNUT GROVE WSC (TX2120024) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: WALNUT GROVE WSC (TX2120024) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: WALNUT GROVE WSC (TX2120024) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: WALNUT GROVE WSC (TX2120024) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: WALNUT GROVE WSC (TX2120024) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: WALNUT GROVE WSC (TX2120024) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: WALNUT GROVE WSC (TX2120024) |
| 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 | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: WALNUT GROVE WSC (TX2120024) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: WALNUT GROVE WSC (TX2120024) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: WALNUT GROVE WSC (TX2120024) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: WALNUT GROVE WSC (TX2120024) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: WALNUT GROVE WSC (TX2120024) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: WALNUT GROVE WSC (TX2120024) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: WALNUT GROVE WSC (TX2120024) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: WALNUT GROVE WSC (TX2120024) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: WALNUT GROVE WSC (TX2120024) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: WALNUT GROVE WSC (TX2120024) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: WALNUT GROVE WSC (TX2120024) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: WALNUT GROVE WSC (TX2120024) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: WALNUT GROVE WSC (TX2120024) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: WALNUT GROVE WSC (TX2120024) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: WALNUT GROVE WSC (TX2120024) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-21 to 2025-07-22 | UCMR5 Analytical Results: WALNUT GROVE WSC (TX2120024) |
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 →Walnut Grove WSC's phone number on EPA record is 903-839-4372. Its mailing address is PO BOX 269, WHITEHOUSE, TX 75791-0269.
According to EPA's record, Walnut Grove WSC uses surface water bought from City of Tyler, Southern Utilities and North Cherokee WSC.
No health-based violations on EPA record since 2016. EPA also lists 1 missed or late test or report in 10 years. The record comes from EPA's SDWIS compliance database.
Lead was not detected at the 90th percentile of tap samples in Walnut Grove WSC's latest lead and copper round, which ended in December 2025. The federal action level is 15 µg/L.
PurityMap has no verified website for Walnut Grove WSC. Its phone number on EPA record is 903-839-4372. Its mailing address on EPA record is PO BOX 269, WHITEHOUSE, TX 75791-0269. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.