Arsenic above the legal limit in the period starting January 2026.
Serves about 4,758 people (1,586 connections) with groundwater from its own wells, and buys water from Harris County MUD 118.
From EPA's record for TX1010626. PurityMap is independent of Harris County MUD 119.
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1 health-based violation in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| From January 2026 | Arsenic | 0.014 mg/L | 0.010 mg/L | Archived |
EPA required this system to test for 30 unregulated and emerging contaminants, from April 2023 to March 2024.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Lithium | 24.1 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 | 2023-04-27 to 2023-10-11 | UCMR5 Analytical Results: HARRIS COUNTY MUD 119 (TX1010626) |
| Perfluorooctanoic acid (PFOA) | 4 ng/L | 4.0 ng/L federal MCL (2024) | Within a historical reference; current applicability unverified | 2023-04-27 to 2023-11-08 | UCMR5 Analytical Results: HARRIS COUNTY MUD 119 (TX1010626) |
| 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 | 2023-04-27 to 2023-11-08 | UCMR5 Analytical Results: HARRIS COUNTY MUD 119 (TX1010626) |
| 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 | 2023-04-27 to 2023-11-08 | UCMR5 Analytical Results: HARRIS COUNTY MUD 119 (TX1010626) |
| 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 | 2023-04-27 to 2023-11-08 | UCMR5 Analytical Results: HARRIS COUNTY MUD 119 (TX1010626) |
| 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 | 2023-04-27 to 2023-11-08 | UCMR5 Analytical Results: HARRIS COUNTY MUD 119 (TX1010626) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-27 to 2023-11-08 | UCMR5 Analytical Results: HARRIS COUNTY MUD 119 (TX1010626) |
| 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 | 2023-04-27 to 2023-11-08 | UCMR5 Analytical Results: HARRIS COUNTY MUD 119 (TX1010626) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-04-27 to 2023-11-08 | UCMR5 Analytical Results: HARRIS COUNTY MUD 119 (TX1010626) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-27 to 2024-03-06 | UCMR5 Analytical Results: HARRIS COUNTY MUD 119 (TX1010626) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-27 to 2024-03-06 | UCMR5 Analytical Results: HARRIS COUNTY MUD 119 (TX1010626) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-27 to 2023-11-08 | UCMR5 Analytical Results: HARRIS COUNTY MUD 119 (TX1010626) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-27 to 2023-11-08 | UCMR5 Analytical Results: HARRIS COUNTY MUD 119 (TX1010626) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-27 to 2023-11-08 | UCMR5 Analytical Results: HARRIS COUNTY MUD 119 (TX1010626) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-27 to 2023-11-08 | UCMR5 Analytical Results: HARRIS COUNTY MUD 119 (TX1010626) |
| 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 | 2023-04-27 to 2023-11-08 | UCMR5 Analytical Results: HARRIS COUNTY MUD 119 (TX1010626) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-27 to 2023-11-08 | UCMR5 Analytical Results: HARRIS COUNTY MUD 119 (TX1010626) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-27 to 2023-11-08 | UCMR5 Analytical Results: HARRIS COUNTY MUD 119 (TX1010626) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-27 to 2023-11-08 | UCMR5 Analytical Results: HARRIS COUNTY MUD 119 (TX1010626) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-27 to 2023-11-08 | UCMR5 Analytical Results: HARRIS COUNTY MUD 119 (TX1010626) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-27 to 2023-11-08 | UCMR5 Analytical Results: HARRIS COUNTY MUD 119 (TX1010626) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-04-27 to 2023-11-08 | UCMR5 Analytical Results: HARRIS COUNTY MUD 119 (TX1010626) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2023-04-27 to 2023-11-08 | UCMR5 Analytical Results: HARRIS COUNTY MUD 119 (TX1010626) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-04-27 to 2023-11-08 | UCMR5 Analytical Results: HARRIS COUNTY MUD 119 (TX1010626) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-04-27 to 2023-11-08 | UCMR5 Analytical Results: HARRIS COUNTY MUD 119 (TX1010626) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-27 to 2023-11-08 | UCMR5 Analytical Results: HARRIS COUNTY MUD 119 (TX1010626) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-27 to 2023-11-08 | UCMR5 Analytical Results: HARRIS COUNTY MUD 119 (TX1010626) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-27 to 2024-03-06 | UCMR5 Analytical Results: HARRIS COUNTY MUD 119 (TX1010626) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-27 to 2024-03-06 | UCMR5 Analytical Results: HARRIS COUNTY MUD 119 (TX1010626) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-04-27 to 2023-11-08 | UCMR5 Analytical Results: HARRIS COUNTY MUD 119 (TX1010626) |
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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.
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Follow this water →Harris County MUD 119's phone number on EPA record is 713-864-5466. Its mailing address is 1155 DAIRY ASHFORD RD STE 875, HOUSTON, TX 77079-3034.
According to EPA's record, Harris County MUD 119 uses groundwater from its own wells, and buys water from Harris County MUD 118.
EPA's record shows 1 health-based violation for Harris County MUD 119 in the 10 years to July 9, 2026. Arsenic was above the legal limit in the period starting January 2026. 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 Harris County MUD 119's latest lead and copper round, which ended in December 2025, was 1.23 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Harris County MUD 119. Its phone number on EPA record is 713-864-5466. Its mailing address on EPA record is 1155 DAIRY ASHFORD RD STE 875, HOUSTON, TX 77079-3034. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.