No health-based violations on EPA record since 2016.
Serves about 5,346 people (1,782 connections) with groundwater from its own wells, and buys water from City of Houston.
From EPA's record for TX1010728. PurityMap is independent of Mount Houston Road MUD.
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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 February 2025 to August 2025.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Lithium | 19 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 | 2025-02-11 to 2025-08-11 | UCMR5 Analytical Results: MOUNT HOUSTON ROAD MUD (TX1010728) |
| 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 | 2025-02-11 to 2025-08-11 | UCMR5 Analytical Results: MOUNT HOUSTON ROAD MUD (TX1010728) |
| 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 | 2025-02-11 to 2025-08-11 | UCMR5 Analytical Results: MOUNT HOUSTON ROAD MUD (TX1010728) |
| 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 | 2025-02-11 to 2025-08-11 | UCMR5 Analytical Results: MOUNT HOUSTON ROAD MUD (TX1010728) |
| 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 | 2025-02-11 to 2025-08-11 | UCMR5 Analytical Results: MOUNT HOUSTON ROAD MUD (TX1010728) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-11 to 2025-08-11 | UCMR5 Analytical Results: MOUNT HOUSTON ROAD MUD (TX1010728) |
| 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 | 2025-02-11 to 2025-08-11 | UCMR5 Analytical Results: MOUNT HOUSTON ROAD MUD (TX1010728) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-11 to 2025-08-11 | UCMR5 Analytical Results: MOUNT HOUSTON ROAD MUD (TX1010728) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-11 | UCMR5 Analytical Results: MOUNT HOUSTON ROAD MUD (TX1010728) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-11 | UCMR5 Analytical Results: MOUNT HOUSTON ROAD MUD (TX1010728) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-11 to 2025-08-11 | UCMR5 Analytical Results: MOUNT HOUSTON ROAD MUD (TX1010728) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-11 to 2025-08-11 | UCMR5 Analytical Results: MOUNT HOUSTON ROAD MUD (TX1010728) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-11 to 2025-08-11 | UCMR5 Analytical Results: MOUNT HOUSTON ROAD MUD (TX1010728) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-11 to 2025-08-11 | UCMR5 Analytical Results: MOUNT HOUSTON ROAD MUD (TX1010728) |
| 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 | 2025-02-11 to 2025-08-11 | UCMR5 Analytical Results: MOUNT HOUSTON ROAD MUD (TX1010728) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-11 to 2025-08-11 | UCMR5 Analytical Results: MOUNT HOUSTON ROAD MUD (TX1010728) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-11 to 2025-08-11 | UCMR5 Analytical Results: MOUNT HOUSTON ROAD MUD (TX1010728) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-11 to 2025-08-11 | UCMR5 Analytical Results: MOUNT HOUSTON ROAD MUD (TX1010728) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-11 to 2025-08-11 | UCMR5 Analytical Results: MOUNT HOUSTON ROAD MUD (TX1010728) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-11 to 2025-08-11 | UCMR5 Analytical Results: MOUNT HOUSTON ROAD MUD (TX1010728) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-11 to 2025-08-11 | UCMR5 Analytical Results: MOUNT HOUSTON ROAD MUD (TX1010728) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2025-02-11 to 2025-08-11 | UCMR5 Analytical Results: MOUNT HOUSTON ROAD MUD (TX1010728) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-11 to 2025-08-11 | UCMR5 Analytical Results: MOUNT HOUSTON ROAD MUD (TX1010728) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-11 to 2025-08-11 | UCMR5 Analytical Results: MOUNT HOUSTON ROAD MUD (TX1010728) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-11 to 2025-08-11 | UCMR5 Analytical Results: MOUNT HOUSTON ROAD MUD (TX1010728) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-11 to 2025-08-11 | UCMR5 Analytical Results: MOUNT HOUSTON ROAD MUD (TX1010728) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-11 to 2025-08-11 | UCMR5 Analytical Results: MOUNT HOUSTON ROAD MUD (TX1010728) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-11 | UCMR5 Analytical Results: MOUNT HOUSTON ROAD MUD (TX1010728) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-11 | UCMR5 Analytical Results: MOUNT HOUSTON ROAD MUD (TX1010728) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-11 to 2025-08-11 | UCMR5 Analytical Results: MOUNT HOUSTON ROAD MUD (TX1010728) |
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 →Mount Houston Road MUD's phone number on EPA record is 713-850-9000. Its mailing address is 1980 POST OAK BLVD STE 1380, HOUSTON, TX 77056-3970.
According to EPA's record, Mount Houston Road MUD uses groundwater from its own wells, and buys water from City of Houston.
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.
The 90th-percentile lead result in Mount Houston Road MUD's latest lead and copper round, which ended in December 2024, was 0.5 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Mount Houston Road MUD. Its phone number on EPA record is 713-850-9000. Its mailing address on EPA record is 1980 POST OAK BLVD STE 1380, HOUSTON, TX 77056-3970. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.