No health-based violations on EPA record since 2016.
Serves about 4,847 people (1,619 connections) with groundwater bought from Sienna Regional MUD.
From EPA's record for TX0790345. PurityMap is independent of City of Missouri City.
Are you this utility? Correct this listing →
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 2025 to September 2025.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Lithium | 16.4 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 | 2025-02-03 to 2025-08-06 | UCMR5 Analytical Results: CITY OF MISSOURI CITY (TX0790345) |
| Perfluorobutanoic acid (PFBA) | 17.9 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2025-02-03 to 2025-09-16 | UCMR5 Analytical Results: CITY OF MISSOURI CITY (TX0790345) |
| Perfluoropentanoic acid (PFPeA) | 38 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2025-02-03 to 2025-09-16 | UCMR5 Analytical Results: CITY OF MISSOURI CITY (TX0790345) |
| 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 | 2025-02-03 to 2025-09-16 | UCMR5 Analytical Results: CITY OF MISSOURI CITY (TX0790345) |
| 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 | 2025-02-03 to 2025-09-16 | UCMR5 Analytical Results: CITY OF MISSOURI CITY (TX0790345) |
| 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 | 2025-02-03 to 2025-09-16 | UCMR5 Analytical Results: CITY OF MISSOURI CITY (TX0790345) |
| 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 | 2025-02-03 to 2025-09-16 | UCMR5 Analytical Results: CITY OF MISSOURI CITY (TX0790345) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-03 to 2025-09-16 | UCMR5 Analytical Results: CITY OF MISSOURI CITY (TX0790345) |
| 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 | 2025-02-03 to 2025-09-16 | UCMR5 Analytical Results: CITY OF MISSOURI CITY (TX0790345) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-03 to 2025-09-16 | UCMR5 Analytical Results: CITY OF MISSOURI CITY (TX0790345) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-30 to 2025-08-06 | UCMR5 Analytical Results: CITY OF MISSOURI CITY (TX0790345) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-30 to 2025-08-06 | UCMR5 Analytical Results: CITY OF MISSOURI CITY (TX0790345) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-03 to 2025-09-16 | UCMR5 Analytical Results: CITY OF MISSOURI CITY (TX0790345) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-03 to 2025-09-16 | UCMR5 Analytical Results: CITY OF MISSOURI CITY (TX0790345) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-03 to 2025-09-16 | UCMR5 Analytical Results: CITY OF MISSOURI CITY (TX0790345) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-03 to 2025-09-16 | UCMR5 Analytical Results: CITY OF MISSOURI CITY (TX0790345) |
| 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 | 2025-02-03 to 2025-09-16 | UCMR5 Analytical Results: CITY OF MISSOURI CITY (TX0790345) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-03 to 2025-09-16 | UCMR5 Analytical Results: CITY OF MISSOURI CITY (TX0790345) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-03 to 2025-09-16 | UCMR5 Analytical Results: CITY OF MISSOURI CITY (TX0790345) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-03 to 2025-09-16 | UCMR5 Analytical Results: CITY OF MISSOURI CITY (TX0790345) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-03 to 2025-09-16 | UCMR5 Analytical Results: CITY OF MISSOURI CITY (TX0790345) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-03 to 2025-09-16 | UCMR5 Analytical Results: CITY OF MISSOURI CITY (TX0790345) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2025-02-03 to 2025-09-16 | UCMR5 Analytical Results: CITY OF MISSOURI CITY (TX0790345) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-03 to 2025-09-16 | UCMR5 Analytical Results: CITY OF MISSOURI CITY (TX0790345) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-03 to 2025-09-16 | UCMR5 Analytical Results: CITY OF MISSOURI CITY (TX0790345) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-03 to 2025-09-16 | UCMR5 Analytical Results: CITY OF MISSOURI CITY (TX0790345) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-03 to 2025-09-16 | UCMR5 Analytical Results: CITY OF MISSOURI CITY (TX0790345) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-30 to 2025-08-06 | UCMR5 Analytical Results: CITY OF MISSOURI CITY (TX0790345) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-04-30 to 2025-08-06 | UCMR5 Analytical Results: CITY OF MISSOURI CITY (TX0790345) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-03 to 2025-09-16 | UCMR5 Analytical Results: CITY OF MISSOURI CITY (TX0790345) |
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 →City of Missouri City's phone number on EPA record is 281-403-8576. Its mailing address is 1522 TEXAS PKWY, MISSOURI CITY, TX 77489-2170.
According to EPA's record, City of Missouri City uses groundwater bought from Sienna Regional MUD.
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 City of Missouri City's latest lead and copper round, which ended in December 2024, was 0.5 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for City of Missouri City. Its phone number on EPA record is 281-403-8576. Its mailing address on EPA record is 1522 TEXAS PKWY, MISSOURI CITY, TX 77489-2170. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.