No health-based violations on EPA record since 2016.
Serves about 4,314 people (1,438 connections) with surface water bought from Grand Mission MUD 1 and North Fort Bend Water Authority.
From EPA's record for TX0790470. PurityMap is independent of Fort Bend County MUD 165.
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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 January 2023 to March 2024.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Lithium | 13 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 | 2023-01-16 to 2023-10-11 | UCMR5 Analytical Results: FORT BEND COUNTY MUD 165 (TX0790470) |
| Perfluorooctanesulfonic acid (PFOS) | 4.2 ng/L | 4.0 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2023-03-27 to 2023-10-11 | UCMR5 Analytical Results: FORT BEND COUNTY MUD 165 (TX0790470) |
| Perfluorohexanesulfonic acid (PFHxS) | 3 ng/L | 10 ng/L federal MCL (2024) | Within a historical reference; current applicability unverified | 2023-03-27 to 2023-10-11 | UCMR5 Analytical Results: FORT BEND COUNTY MUD 165 (TX0790470) |
| Perfluorohexanoic acid (PFHxA) | 5.8 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Within a historical reference; current applicability unverified | 2023-06-26 to 2023-12-18 | UCMR5 Analytical Results: FORT BEND COUNTY MUD 165 (TX0790470) |
| Perfluorobutanoic acid (PFBA) | 21.7 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2023-03-27 to 2023-10-11 | UCMR5 Analytical Results: FORT BEND COUNTY MUD 165 (TX0790470) |
| Perfluoropentanoic acid (PFPeA) | 6 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2023-06-26 to 2023-12-18 | UCMR5 Analytical Results: FORT BEND COUNTY MUD 165 (TX0790470) |
| 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 | 2023-03-27 to 2023-10-11 | UCMR5 Analytical Results: FORT BEND COUNTY MUD 165 (TX0790470) |
| 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 | 2023-03-27 to 2023-10-11 | UCMR5 Analytical Results: FORT BEND COUNTY MUD 165 (TX0790470) |
| 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 | 2023-03-27 to 2023-10-11 | UCMR5 Analytical Results: FORT BEND COUNTY MUD 165 (TX0790470) |
| 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 | 2023-03-27 to 2023-10-11 | UCMR5 Analytical Results: FORT BEND COUNTY MUD 165 (TX0790470) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-27 to 2023-10-11 | UCMR5 Analytical Results: FORT BEND COUNTY MUD 165 (TX0790470) |
| 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 | 2023-03-27 to 2023-10-11 | UCMR5 Analytical Results: FORT BEND COUNTY MUD 165 (TX0790470) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-03-27 to 2023-10-11 | UCMR5 Analytical Results: FORT BEND COUNTY MUD 165 (TX0790470) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-16 to 2024-03-05 | UCMR5 Analytical Results: FORT BEND COUNTY MUD 165 (TX0790470) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-16 to 2024-03-05 | UCMR5 Analytical Results: FORT BEND COUNTY MUD 165 (TX0790470) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-27 to 2023-10-11 | UCMR5 Analytical Results: FORT BEND COUNTY MUD 165 (TX0790470) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-27 to 2023-10-11 | UCMR5 Analytical Results: FORT BEND COUNTY MUD 165 (TX0790470) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-27 to 2023-10-11 | UCMR5 Analytical Results: FORT BEND COUNTY MUD 165 (TX0790470) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-27 to 2023-10-11 | UCMR5 Analytical Results: FORT BEND COUNTY MUD 165 (TX0790470) |
| 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 | 2023-03-27 to 2023-10-11 | UCMR5 Analytical Results: FORT BEND COUNTY MUD 165 (TX0790470) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-27 to 2023-10-11 | UCMR5 Analytical Results: FORT BEND COUNTY MUD 165 (TX0790470) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-27 to 2023-10-11 | UCMR5 Analytical Results: FORT BEND COUNTY MUD 165 (TX0790470) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-27 to 2023-10-11 | UCMR5 Analytical Results: FORT BEND COUNTY MUD 165 (TX0790470) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-27 to 2023-10-11 | UCMR5 Analytical Results: FORT BEND COUNTY MUD 165 (TX0790470) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-03-27 to 2023-10-11 | UCMR5 Analytical Results: FORT BEND COUNTY MUD 165 (TX0790470) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-03-27 to 2023-10-11 | UCMR5 Analytical Results: FORT BEND COUNTY MUD 165 (TX0790470) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-27 to 2023-10-11 | UCMR5 Analytical Results: FORT BEND COUNTY MUD 165 (TX0790470) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-16 to 2024-03-05 | UCMR5 Analytical Results: FORT BEND COUNTY MUD 165 (TX0790470) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-16 to 2024-03-05 | UCMR5 Analytical Results: FORT BEND COUNTY MUD 165 (TX0790470) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-27 to 2023-10-11 | UCMR5 Analytical Results: FORT BEND COUNTY MUD 165 (TX0790470) |
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 →Fort Bend County MUD 165's phone number on EPA record is 713-860-6400. Its mailing address is 3200 SOUTHWEST FWY STE 2600, HOUSTON, TX 77027-7537.
According to EPA's record, Fort Bend County MUD 165 uses surface water bought from Grand Mission MUD 1 and North Fort Bend Water Authority.
No health-based violations on EPA record since 2016. The record comes from EPA's SDWIS compliance database.
Lead was not detected at the 90th percentile of tap samples in Fort Bend County MUD 165's latest lead and copper round, which ended in December 2023. The federal action level is 15 µg/L.
PurityMap has no verified website for Fort Bend County MUD 165. Its phone number on EPA record is 713-860-6400. 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.