No health-based violations on EPA record since 2016.
Serves about 4,614 people (1,538 connections) with surface water bought from Northwest Harris County MUD 21 and North Harris County Regional Water Autho.
From EPA's record for TX1010435. PurityMap is independent of Fountainhead 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 2024 to April 2025.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluorohexanoic acid (PFHxA) | 3.6 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Within a historical reference; current applicability unverified | 2024-02-13 to 2025-04-23 | UCMR5 Analytical Results: FOUNTAINHEAD MUD (TX1010435) |
| Perfluorobutanoic acid (PFBA) | 8.2 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2024-02-13 to 2025-04-23 | UCMR5 Analytical Results: FOUNTAINHEAD MUD (TX1010435) |
| Perfluoropentanoic acid (PFPeA) | 4.1 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2024-02-13 to 2025-04-23 | UCMR5 Analytical Results: FOUNTAINHEAD MUD (TX1010435) |
| 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 | 2024-02-13 to 2025-04-23 | UCMR5 Analytical Results: FOUNTAINHEAD MUD (TX1010435) |
| 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 | 2024-02-13 to 2025-04-23 | UCMR5 Analytical Results: FOUNTAINHEAD MUD (TX1010435) |
| 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 | 2024-02-13 to 2025-04-23 | UCMR5 Analytical Results: FOUNTAINHEAD MUD (TX1010435) |
| 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 | 2024-02-13 to 2025-04-23 | UCMR5 Analytical Results: FOUNTAINHEAD MUD (TX1010435) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2025-04-23 | UCMR5 Analytical Results: FOUNTAINHEAD MUD (TX1010435) |
| 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 | 2024-02-13 to 2025-04-23 | UCMR5 Analytical Results: FOUNTAINHEAD MUD (TX1010435) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-13 to 2025-04-23 | UCMR5 Analytical Results: FOUNTAINHEAD MUD (TX1010435) |
| 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 | 2024-02-13 to 2024-11-06 | UCMR5 Analytical Results: FOUNTAINHEAD MUD (TX1010435) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2024-11-06 | UCMR5 Analytical Results: FOUNTAINHEAD MUD (TX1010435) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2024-11-06 | UCMR5 Analytical Results: FOUNTAINHEAD MUD (TX1010435) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2025-04-23 | UCMR5 Analytical Results: FOUNTAINHEAD MUD (TX1010435) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2025-04-23 | UCMR5 Analytical Results: FOUNTAINHEAD MUD (TX1010435) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2025-04-23 | UCMR5 Analytical Results: FOUNTAINHEAD MUD (TX1010435) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2025-04-23 | UCMR5 Analytical Results: FOUNTAINHEAD MUD (TX1010435) |
| 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 | 2024-02-13 to 2025-04-23 | UCMR5 Analytical Results: FOUNTAINHEAD MUD (TX1010435) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2025-04-23 | UCMR5 Analytical Results: FOUNTAINHEAD MUD (TX1010435) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2025-04-23 | UCMR5 Analytical Results: FOUNTAINHEAD MUD (TX1010435) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2025-04-23 | UCMR5 Analytical Results: FOUNTAINHEAD MUD (TX1010435) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2025-04-23 | UCMR5 Analytical Results: FOUNTAINHEAD MUD (TX1010435) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-13 to 2025-04-23 | UCMR5 Analytical Results: FOUNTAINHEAD MUD (TX1010435) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-13 to 2025-04-23 | UCMR5 Analytical Results: FOUNTAINHEAD MUD (TX1010435) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-13 to 2025-04-23 | UCMR5 Analytical Results: FOUNTAINHEAD MUD (TX1010435) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-13 to 2025-04-23 | UCMR5 Analytical Results: FOUNTAINHEAD MUD (TX1010435) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2025-04-23 | UCMR5 Analytical Results: FOUNTAINHEAD MUD (TX1010435) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2024-11-06 | UCMR5 Analytical Results: FOUNTAINHEAD MUD (TX1010435) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2024-11-06 | UCMR5 Analytical Results: FOUNTAINHEAD MUD (TX1010435) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-13 to 2025-04-23 | UCMR5 Analytical Results: FOUNTAINHEAD MUD (TX1010435) |
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 →Fountainhead MUD's phone number on EPA record is 713-880-3800. Its mailing address is 5120 BAYARD LN, HOUSTON, TX 77006-6512.
According to EPA's record, Fountainhead MUD uses surface water bought from Northwest Harris County MUD 21 and North Harris County Regional Water Autho.
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 Fountainhead MUD's latest lead and copper round, which ended in December 2025, was 1.39 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Fountainhead MUD. Its phone number on EPA record is 713-880-3800. Its mailing address on EPA record is 5120 BAYARD LN, HOUSTON, TX 77006-6512. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.