No health-based violations on EPA record since 2016.
Serves about 4,203 people (1,401 connections) with groundwater from its own wells, and buys water from Quail Valley Utility District, Palmer Plantation MUD 2, Fort Bend County MUD 46 and 1 more.
From EPA's record for TX0790033. PurityMap is independent of Thunderbird Utility District 1.
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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 April 2024 to October 2024.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Lithium | 21 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 | 2024-04-16 to 2024-10-08 | UCMR5 Analytical Results: THUNDERBIRD UTILITY DISTRICT 1 (TX0790033) |
| 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 | 2024-04-16 to 2024-10-08 | UCMR5 Analytical Results: THUNDERBIRD UTILITY DISTRICT 1 (TX0790033) |
| 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 | 2024-04-16 to 2024-10-08 | UCMR5 Analytical Results: THUNDERBIRD UTILITY DISTRICT 1 (TX0790033) |
| 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 | 2024-04-16 to 2024-10-08 | UCMR5 Analytical Results: THUNDERBIRD UTILITY DISTRICT 1 (TX0790033) |
| 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 | 2024-04-16 to 2024-10-08 | UCMR5 Analytical Results: THUNDERBIRD UTILITY DISTRICT 1 (TX0790033) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-16 to 2024-10-08 | UCMR5 Analytical Results: THUNDERBIRD UTILITY DISTRICT 1 (TX0790033) |
| 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 | 2024-04-16 to 2024-10-08 | UCMR5 Analytical Results: THUNDERBIRD UTILITY DISTRICT 1 (TX0790033) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-04-16 to 2024-10-08 | UCMR5 Analytical Results: THUNDERBIRD UTILITY DISTRICT 1 (TX0790033) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-16 to 2024-10-08 | UCMR5 Analytical Results: THUNDERBIRD UTILITY DISTRICT 1 (TX0790033) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-16 to 2024-10-08 | UCMR5 Analytical Results: THUNDERBIRD UTILITY DISTRICT 1 (TX0790033) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-16 to 2024-10-08 | UCMR5 Analytical Results: THUNDERBIRD UTILITY DISTRICT 1 (TX0790033) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-16 to 2024-10-08 | UCMR5 Analytical Results: THUNDERBIRD UTILITY DISTRICT 1 (TX0790033) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-16 to 2024-10-08 | UCMR5 Analytical Results: THUNDERBIRD UTILITY DISTRICT 1 (TX0790033) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-16 to 2024-10-08 | UCMR5 Analytical Results: THUNDERBIRD UTILITY DISTRICT 1 (TX0790033) |
| 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 | 2024-04-16 to 2024-10-08 | UCMR5 Analytical Results: THUNDERBIRD UTILITY DISTRICT 1 (TX0790033) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-16 to 2024-10-08 | UCMR5 Analytical Results: THUNDERBIRD UTILITY DISTRICT 1 (TX0790033) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-16 to 2024-10-08 | UCMR5 Analytical Results: THUNDERBIRD UTILITY DISTRICT 1 (TX0790033) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-16 to 2024-10-08 | UCMR5 Analytical Results: THUNDERBIRD UTILITY DISTRICT 1 (TX0790033) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-16 to 2024-10-08 | UCMR5 Analytical Results: THUNDERBIRD UTILITY DISTRICT 1 (TX0790033) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-16 to 2024-10-08 | UCMR5 Analytical Results: THUNDERBIRD UTILITY DISTRICT 1 (TX0790033) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-04-16 to 2024-10-08 | UCMR5 Analytical Results: THUNDERBIRD UTILITY DISTRICT 1 (TX0790033) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2024-04-16 to 2024-10-08 | UCMR5 Analytical Results: THUNDERBIRD UTILITY DISTRICT 1 (TX0790033) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-04-16 to 2024-10-08 | UCMR5 Analytical Results: THUNDERBIRD UTILITY DISTRICT 1 (TX0790033) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-04-16 to 2024-10-08 | UCMR5 Analytical Results: THUNDERBIRD UTILITY DISTRICT 1 (TX0790033) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-04-16 to 2024-10-08 | UCMR5 Analytical Results: THUNDERBIRD UTILITY DISTRICT 1 (TX0790033) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-16 to 2024-10-08 | UCMR5 Analytical Results: THUNDERBIRD UTILITY DISTRICT 1 (TX0790033) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-16 to 2024-10-08 | UCMR5 Analytical Results: THUNDERBIRD UTILITY DISTRICT 1 (TX0790033) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-16 to 2024-10-08 | UCMR5 Analytical Results: THUNDERBIRD UTILITY DISTRICT 1 (TX0790033) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-16 to 2024-10-08 | UCMR5 Analytical Results: THUNDERBIRD UTILITY DISTRICT 1 (TX0790033) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-04-16 to 2024-10-08 | UCMR5 Analytical Results: THUNDERBIRD UTILITY DISTRICT 1 (TX0790033) |
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 →Thunderbird Utility District 1's phone number on EPA record is 281-499-5539. Its mailing address is 3134 CARTWRIGHT RD, MISSOURI CITY, TX 77459-2543.
According to EPA's record, Thunderbird Utility District 1 uses groundwater from its own wells, and buys water from Quail Valley Utility District, Palmer Plantation MUD 2, Fort Bend County MUD 46 and 1 more.
No health-based violations on EPA record since 2016. EPA also lists 38 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
Lead was not detected at the 90th percentile of tap samples in Thunderbird Utility District 1's latest lead and copper round, which ended in December 2025. The federal action level is 15 µg/L.
PurityMap has no verified website for Thunderbird Utility District 1. Its phone number on EPA record is 281-499-5539. Its mailing address on EPA record is 3134 CARTWRIGHT RD, MISSOURI CITY, TX 77459-2543. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.