No health-based violations on EPA record since 2016.
Serves about 3,543 people (1,181 connections) with groundwater from its own wells, and buys water from Langham Creek Utility District and West Harris County Regional Water Author.
From EPA's record for TX1011296. PurityMap is independent of Harris County MUD 149.
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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 April 2025 to October 2025.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Lithium | 31.8 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 | 2025-04-23 to 2025-10-14 | UCMR5 Analytical Results: HARRIS COUNTY MUD 149 (TX1011296) |
| Perfluorohexanoic acid (PFHxA) | 3.7 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Within a historical reference; current applicability unverified | 2025-04-23 to 2025-10-14 | UCMR5 Analytical Results: HARRIS COUNTY MUD 149 (TX1011296) |
| Perfluoropentanoic acid (PFPeA) | 4 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2025-04-23 to 2025-10-14 | UCMR5 Analytical Results: HARRIS COUNTY MUD 149 (TX1011296) |
| 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 | 2025-04-23 to 2025-10-14 | UCMR5 Analytical Results: HARRIS COUNTY MUD 149 (TX1011296) |
| 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 | 2025-04-23 to 2025-10-14 | UCMR5 Analytical Results: HARRIS COUNTY MUD 149 (TX1011296) |
| 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 | 2025-04-23 to 2025-10-14 | UCMR5 Analytical Results: HARRIS COUNTY MUD 149 (TX1011296) |
| 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 | 2025-04-23 to 2025-10-14 | UCMR5 Analytical Results: HARRIS COUNTY MUD 149 (TX1011296) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-23 to 2025-10-14 | UCMR5 Analytical Results: HARRIS COUNTY MUD 149 (TX1011296) |
| 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 | 2025-04-23 to 2025-10-14 | UCMR5 Analytical Results: HARRIS COUNTY MUD 149 (TX1011296) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-04-23 to 2025-10-14 | UCMR5 Analytical Results: HARRIS COUNTY MUD 149 (TX1011296) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-23 | UCMR5 Analytical Results: HARRIS COUNTY MUD 149 (TX1011296) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-23 | UCMR5 Analytical Results: HARRIS COUNTY MUD 149 (TX1011296) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-23 to 2025-10-14 | UCMR5 Analytical Results: HARRIS COUNTY MUD 149 (TX1011296) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-23 to 2025-10-14 | UCMR5 Analytical Results: HARRIS COUNTY MUD 149 (TX1011296) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-23 to 2025-10-14 | UCMR5 Analytical Results: HARRIS COUNTY MUD 149 (TX1011296) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-23 to 2025-10-14 | UCMR5 Analytical Results: HARRIS COUNTY MUD 149 (TX1011296) |
| 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 | 2025-04-23 to 2025-10-14 | UCMR5 Analytical Results: HARRIS COUNTY MUD 149 (TX1011296) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-23 to 2025-10-14 | UCMR5 Analytical Results: HARRIS COUNTY MUD 149 (TX1011296) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-23 to 2025-10-14 | UCMR5 Analytical Results: HARRIS COUNTY MUD 149 (TX1011296) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-23 to 2025-10-14 | UCMR5 Analytical Results: HARRIS COUNTY MUD 149 (TX1011296) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-23 to 2025-10-14 | UCMR5 Analytical Results: HARRIS COUNTY MUD 149 (TX1011296) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-23 to 2025-10-14 | UCMR5 Analytical Results: HARRIS COUNTY MUD 149 (TX1011296) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-04-23 to 2025-10-14 | UCMR5 Analytical Results: HARRIS COUNTY MUD 149 (TX1011296) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-04-23 to 2025-10-14 | UCMR5 Analytical Results: HARRIS COUNTY MUD 149 (TX1011296) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-04-23 to 2025-10-14 | UCMR5 Analytical Results: HARRIS COUNTY MUD 149 (TX1011296) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-04-23 to 2025-10-14 | UCMR5 Analytical Results: HARRIS COUNTY MUD 149 (TX1011296) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-23 to 2025-10-14 | UCMR5 Analytical Results: HARRIS COUNTY MUD 149 (TX1011296) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-23 | UCMR5 Analytical Results: HARRIS COUNTY MUD 149 (TX1011296) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-23 | UCMR5 Analytical Results: HARRIS COUNTY MUD 149 (TX1011296) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-23 to 2025-10-14 | UCMR5 Analytical Results: HARRIS COUNTY MUD 149 (TX1011296) |
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 →Harris County MUD 149's phone number on EPA record is 713-623-4531. Its mailing address is 1300 POST OAK BLVD STE 2400, HOUSTON, TX 77056-3085.
According to EPA's record, Harris County MUD 149 uses groundwater from its own wells, and buys water from Langham Creek Utility District and West Harris County Regional Water Author.
No health-based violations on EPA record since 2016. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Harris County MUD 149's latest lead and copper round, which ended in December 2025, was 7.79 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Harris County MUD 149. Its phone number on EPA record is 713-623-4531. Its mailing address on EPA record is 1300 POST OAK BLVD STE 2400, HOUSTON, TX 77056-3085. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.