No open health-based violations on EPA record in the last 10 years; latest legal-limit breach in the period starting February 2018.
Serves about 24,171 people (8,057 connections) with surface water bought from SJRA the Woodlands.
From EPA's record for TX1700458. PurityMap is independent of Montgomery County MUD 47.
Are you this utility? Correct this listing →
1 health-based violation in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| From February 2018 | E. coli | – | – | Resolved |
EPA required this system to test for 30 unregulated and emerging contaminants, from August 2023 to May 2024.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Lithium | 19.9 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 | 2023-08-24 to 2024-05-13 | UCMR5 Analytical Results: MONTGOMERY COUNTY MUD 47 (TX1700458) |
| 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 | 2023-08-24 to 2024-05-13 | UCMR5 Analytical Results: MONTGOMERY COUNTY MUD 47 (TX1700458) |
| 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 | 2023-08-24 to 2024-05-13 | UCMR5 Analytical Results: MONTGOMERY COUNTY MUD 47 (TX1700458) |
| 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 | 2023-08-24 to 2024-05-13 | UCMR5 Analytical Results: MONTGOMERY COUNTY MUD 47 (TX1700458) |
| 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 | 2023-08-24 to 2024-05-13 | UCMR5 Analytical Results: MONTGOMERY COUNTY MUD 47 (TX1700458) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-24 to 2024-05-13 | UCMR5 Analytical Results: MONTGOMERY COUNTY MUD 47 (TX1700458) |
| 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 | 2023-08-24 to 2024-05-13 | UCMR5 Analytical Results: MONTGOMERY COUNTY MUD 47 (TX1700458) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-08-24 to 2024-05-13 | UCMR5 Analytical Results: MONTGOMERY COUNTY MUD 47 (TX1700458) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-24 to 2024-05-13 | UCMR5 Analytical Results: MONTGOMERY COUNTY MUD 47 (TX1700458) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-24 to 2024-05-13 | UCMR5 Analytical Results: MONTGOMERY COUNTY MUD 47 (TX1700458) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-24 to 2024-05-13 | UCMR5 Analytical Results: MONTGOMERY COUNTY MUD 47 (TX1700458) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-24 to 2024-05-13 | UCMR5 Analytical Results: MONTGOMERY COUNTY MUD 47 (TX1700458) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-24 to 2024-05-13 | UCMR5 Analytical Results: MONTGOMERY COUNTY MUD 47 (TX1700458) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-24 to 2024-05-13 | UCMR5 Analytical Results: MONTGOMERY COUNTY MUD 47 (TX1700458) |
| 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 | 2023-08-24 to 2024-05-13 | UCMR5 Analytical Results: MONTGOMERY COUNTY MUD 47 (TX1700458) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-24 to 2024-05-13 | UCMR5 Analytical Results: MONTGOMERY COUNTY MUD 47 (TX1700458) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-24 to 2024-05-13 | UCMR5 Analytical Results: MONTGOMERY COUNTY MUD 47 (TX1700458) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-24 to 2024-05-13 | UCMR5 Analytical Results: MONTGOMERY COUNTY MUD 47 (TX1700458) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-24 to 2024-05-13 | UCMR5 Analytical Results: MONTGOMERY COUNTY MUD 47 (TX1700458) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-24 to 2024-05-13 | UCMR5 Analytical Results: MONTGOMERY COUNTY MUD 47 (TX1700458) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-08-24 to 2024-05-13 | UCMR5 Analytical Results: MONTGOMERY COUNTY MUD 47 (TX1700458) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2023-08-24 to 2024-05-13 | UCMR5 Analytical Results: MONTGOMERY COUNTY MUD 47 (TX1700458) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-08-24 to 2024-05-13 | UCMR5 Analytical Results: MONTGOMERY COUNTY MUD 47 (TX1700458) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-08-24 to 2024-05-13 | UCMR5 Analytical Results: MONTGOMERY COUNTY MUD 47 (TX1700458) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-08-24 to 2024-05-13 | UCMR5 Analytical Results: MONTGOMERY COUNTY MUD 47 (TX1700458) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-24 to 2024-05-13 | UCMR5 Analytical Results: MONTGOMERY COUNTY MUD 47 (TX1700458) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-24 to 2024-05-13 | UCMR5 Analytical Results: MONTGOMERY COUNTY MUD 47 (TX1700458) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-24 to 2024-05-13 | UCMR5 Analytical Results: MONTGOMERY COUNTY MUD 47 (TX1700458) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-24 to 2024-05-13 | UCMR5 Analytical Results: MONTGOMERY COUNTY MUD 47 (TX1700458) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-24 to 2024-05-13 | UCMR5 Analytical Results: MONTGOMERY COUNTY MUD 47 (TX1700458) |
Screening tells you if something is worth a closer look; a lab result is the number you can act on.
As an Amazon Associate, PurityMap earns from qualifying purchases. Affiliate disclosure
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 →Montgomery County MUD 47's phone number on EPA record is 281-367-1271. Its mailing address is 2455 LAKE ROBBINS DR, THE WOODLANDS, TX 77380-1025.
According to EPA's record, Montgomery County MUD 47 uses surface water bought from SJRA the Woodlands.
EPA's record shows 1 health-based violation for Montgomery County MUD 47 in the 10 years to July 9, 2026. No open health-based violations on EPA record in the last 10 years. The latest legal-limit breach on record was in the period starting February 2018. EPA also lists 2 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Montgomery County MUD 47's latest lead and copper round, which ended in December 2025, was 0.703 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Montgomery County MUD 47. Its phone number on EPA record is 281-367-1271. Its mailing address on EPA record is 2455 LAKE ROBBINS DR, THE WOODLANDS, TX 77380-1025. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.