CITY OF HOUSTON, TX
Moderate5 PFAS compounds detected at measurable levels
All detected PFAS are below the EPA Maximum Contaminant Levels set in April 2024.
5
PFAS Detected
0
Above EPA Limits
102
ZIPs Served
Groundwater
Water Source
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
lithium | 33900.00ppt | No federal limit | — | Unregulated |
6:2 FTS 6:2 Fluorotelomer sulfonic acid | 42.60ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 10.60ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 6.70ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 5.10ppt | No federal limit | — | Unregulated |
ZIP Codes Served by This Utility
77002 77003 77004 77005 77006 77007 77008 77009 77010 77011 77012 77013 77014 77015 77016 77017 77018 77019 77020 77021 77022 77023 77024 77025 77026 77027 77028 77029 77030 77031 77032 77033 77034 77035 77036 77037 77038 77040 77041 77042 77043 77044 77045 77046 77047 77048 77049 77050 77051 77053 77054 77055 77056 77057 77059 77060 77061 77063 77064 77067 77071 77072 77073 77074 77075 77076 77077 77078 77079 77080 77081 77082 77083 77084 77085 77086 77087 77088 77089 77090 77091 77092 77093 77094 77096 77098 77099 77338 77346 77396 77401 77477 77489 77498 77503 77504 77506 77536 77546 77547 77587 77598
Click any ZIP to see the full result page for that area.
About this data
Source
EPA UCMR 5 — January 2026 release
Sampling period
January 2023 – December 2025
Water system ID (PWSID)
TX1010013
Detection threshold (MRL)
~1.5–2 ppt — "Not detected" means below this floor