No open health-based violations on EPA record in the last 10 years.
Serves about 5,301 people (1,767 connections) with surface water bought from Harris County MUD 238, Ricewood MUD, Clay Road MUD and 1 more.
From EPA's record for TX1011689. PurityMap is independent of Mayde Creek MUD.
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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 October 2024 | Lead and copper rule revisions | – | – | Resolved |
EPA required this system to test for 30 unregulated and emerging contaminants, from May 2025 to November 2025.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluorohexanoic acid (PFHxA) | 4 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Within a historical reference; current applicability unverified | 2025-05-06 | UCMR5 Analytical Results: MAYDE CREEK MUD (TX1011689) |
| Perfluorobutanoic acid (PFBA) | 5.1 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2025-05-06 | UCMR5 Analytical Results: MAYDE CREEK MUD (TX1011689) |
| Perfluoropentanoic acid (PFPeA) | 4.6 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2025-05-06 | UCMR5 Analytical Results: MAYDE CREEK MUD (TX1011689) |
| 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 | 2025-05-06 | UCMR5 Analytical Results: MAYDE CREEK MUD (TX1011689) |
| 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 | 2025-05-06 | UCMR5 Analytical Results: MAYDE CREEK MUD (TX1011689) |
| 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 | 2025-05-06 | UCMR5 Analytical Results: MAYDE CREEK MUD (TX1011689) |
| 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 | 2025-05-06 | UCMR5 Analytical Results: MAYDE CREEK MUD (TX1011689) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-06 | UCMR5 Analytical Results: MAYDE CREEK MUD (TX1011689) |
| 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 | 2025-05-06 | UCMR5 Analytical Results: MAYDE CREEK MUD (TX1011689) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-05-06 | UCMR5 Analytical Results: MAYDE CREEK MUD (TX1011689) |
| 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 | 2025-05-06 to 2025-11-12 | UCMR5 Analytical Results: MAYDE CREEK MUD (TX1011689) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-06 | UCMR5 Analytical Results: MAYDE CREEK MUD (TX1011689) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-06 | UCMR5 Analytical Results: MAYDE CREEK MUD (TX1011689) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-06 | UCMR5 Analytical Results: MAYDE CREEK MUD (TX1011689) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-06 | UCMR5 Analytical Results: MAYDE CREEK MUD (TX1011689) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-06 | UCMR5 Analytical Results: MAYDE CREEK MUD (TX1011689) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-06 | UCMR5 Analytical Results: MAYDE CREEK MUD (TX1011689) |
| 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 | 2025-05-06 | UCMR5 Analytical Results: MAYDE CREEK MUD (TX1011689) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-06 | UCMR5 Analytical Results: MAYDE CREEK MUD (TX1011689) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-06 | UCMR5 Analytical Results: MAYDE CREEK MUD (TX1011689) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-06 | UCMR5 Analytical Results: MAYDE CREEK MUD (TX1011689) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-06 | UCMR5 Analytical Results: MAYDE CREEK MUD (TX1011689) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-05-06 | UCMR5 Analytical Results: MAYDE CREEK MUD (TX1011689) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-05-06 | UCMR5 Analytical Results: MAYDE CREEK MUD (TX1011689) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-05-06 | UCMR5 Analytical Results: MAYDE CREEK MUD (TX1011689) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-05-06 | UCMR5 Analytical Results: MAYDE CREEK MUD (TX1011689) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-06 | UCMR5 Analytical Results: MAYDE CREEK MUD (TX1011689) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-06 | UCMR5 Analytical Results: MAYDE CREEK MUD (TX1011689) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-06 | UCMR5 Analytical Results: MAYDE CREEK MUD (TX1011689) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-06 | UCMR5 Analytical Results: MAYDE CREEK MUD (TX1011689) |
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 →Mayde Creek MUD's phone number on EPA record is 281-209-2100. Its mailing address is 3200 SOUTHWEST FWY STE 2600, HOUSTON, TX 77027-7537.
According to EPA's record, Mayde Creek MUD uses surface water bought from Harris County MUD 238, Ricewood MUD, Clay Road MUD and 1 more.
EPA's record shows 1 health-based violation for Mayde Creek MUD in the 10 years to July 9, 2026. No open health-based violations on EPA record in the last 10 years. 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 Mayde Creek MUD's latest lead and copper round, which ended in December 2024, was 2.18 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Mayde Creek MUD. Its phone number on EPA record is 281-209-2100. Its mailing address on EPA record is 3200 SOUTHWEST FWY STE 2600, HOUSTON, TX 77027-7537. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.