No open health-based violations on EPA record in the last 10 years; latest legal-limit breach in the period starting April 2019.
Serves about 1,305 people (435 connections) with groundwater from its own wells, and buys water from Alto Rural WSC Coldsprings Plant and Alto Rural WSC Bradford Mt Plant.
From EPA's record for TX0370055. PurityMap is independent of Alto Rural WSC Central High Plant.
Are you this utility? Correct this listing →
4 health-based violations in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| From October 2024 | Lead and copper rule revisions | – | – | Resolved |
| Apr–Jun 2019 | Total trihalomethanes (TTHM) | 0.081 mg/L | 0.080 mg/L | Resolved |
| Jan–Mar 2019 | Total trihalomethanes (TTHM) | 0.085 mg/L | 0.080 mg/L | Resolved |
| Oct–Dec 2018 | Total trihalomethanes (TTHM) | 0.085 mg/L | 0.080 mg/L | Resolved |
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 | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: ALTO RURAL WSC CENTRAL HIGH PLANT (TX0370055) |
| 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 | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: ALTO RURAL WSC CENTRAL HIGH PLANT (TX0370055) |
| 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 | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: ALTO RURAL WSC CENTRAL HIGH PLANT (TX0370055) |
| 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 | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: ALTO RURAL WSC CENTRAL HIGH PLANT (TX0370055) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: ALTO RURAL WSC CENTRAL HIGH PLANT (TX0370055) |
| 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 | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: ALTO RURAL WSC CENTRAL HIGH PLANT (TX0370055) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: ALTO RURAL WSC CENTRAL HIGH PLANT (TX0370055) |
| 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 | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: ALTO RURAL WSC CENTRAL HIGH PLANT (TX0370055) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-19 | UCMR5 Analytical Results: ALTO RURAL WSC CENTRAL HIGH PLANT (TX0370055) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-19 | UCMR5 Analytical Results: ALTO RURAL WSC CENTRAL HIGH PLANT (TX0370055) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: ALTO RURAL WSC CENTRAL HIGH PLANT (TX0370055) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: ALTO RURAL WSC CENTRAL HIGH PLANT (TX0370055) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: ALTO RURAL WSC CENTRAL HIGH PLANT (TX0370055) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: ALTO RURAL WSC CENTRAL HIGH PLANT (TX0370055) |
| 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 | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: ALTO RURAL WSC CENTRAL HIGH PLANT (TX0370055) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: ALTO RURAL WSC CENTRAL HIGH PLANT (TX0370055) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: ALTO RURAL WSC CENTRAL HIGH PLANT (TX0370055) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: ALTO RURAL WSC CENTRAL HIGH PLANT (TX0370055) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: ALTO RURAL WSC CENTRAL HIGH PLANT (TX0370055) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: ALTO RURAL WSC CENTRAL HIGH PLANT (TX0370055) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: ALTO RURAL WSC CENTRAL HIGH PLANT (TX0370055) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: ALTO RURAL WSC CENTRAL HIGH PLANT (TX0370055) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: ALTO RURAL WSC CENTRAL HIGH PLANT (TX0370055) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: ALTO RURAL WSC CENTRAL HIGH PLANT (TX0370055) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: ALTO RURAL WSC CENTRAL HIGH PLANT (TX0370055) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: ALTO RURAL WSC CENTRAL HIGH PLANT (TX0370055) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: ALTO RURAL WSC CENTRAL HIGH PLANT (TX0370055) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-19 | UCMR5 Analytical Results: ALTO RURAL WSC CENTRAL HIGH PLANT (TX0370055) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-19 | UCMR5 Analytical Results: ALTO RURAL WSC CENTRAL HIGH PLANT (TX0370055) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-19 to 2025-08-20 | UCMR5 Analytical Results: ALTO RURAL WSC CENTRAL HIGH PLANT (TX0370055) |
Screening tells you if something is worth a closer look; a lab result is the number you can act on.
As an Amazon Associate, PurityMap earns from qualifying purchases. Affiliate disclosure
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 →Alto Rural WSC Central High Plant's phone number on EPA record is 936-858-4658. Its mailing address is PO BOX 616, ALTO, TX 75925-0616.
According to EPA's record, Alto Rural WSC Central High Plant uses groundwater from its own wells, and buys water from Alto Rural WSC Coldsprings Plant and Alto Rural WSC Bradford Mt Plant.
EPA's record shows 4 health-based violations for Alto Rural WSC Central High Plant 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 April 2019. EPA also lists 15 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Alto Rural WSC Central High Plant's latest lead and copper round, which ended in December 2027, was 1.04 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Alto Rural WSC Central High Plant. Its phone number on EPA record is 936-858-4658. Its mailing address on EPA record is PO BOX 616, ALTO, TX 75925-0616. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.