ZIP Code 78572
High RiskPFAS above EPA limits detected
2 compounds exceed EPA Maximum Contaminant Levels in water serving this ZIP code. Standard pitcher filters like Brita do not remove PFAS. See filter recommendations below.
19
PFAS Detected
2
Above EPA Limits
4
Water Systems
170%
Highest % of MCL
Compounds Exceeding EPA Limits
PFOS Exceeds EPA limit
0 ppt MCL: 4 ppt 170% of limit
Detected: 6.80 ppt
PFOA Exceeds EPA limit
0 ppt MCL: 4 ppt 108% of limit
Detected: 4.30 ppt
CITY OF MISSION
TX1080008 Low LevelWater Type
Surface Water
PFAS Detected
2
Above MCL
0
State
Texas
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
lithium | 42900.00ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 7.30ppt | No federal limit | — | Unregulated |
AGUA SUD
TX1080022 Low LevelWater Type
Surface Water
PFAS Detected
4
Above MCL
0
State
Texas
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
lithium | 64400.00ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 11.90ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 4.80ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 4.60ppt | No federal limit | — | Unregulated |
SHARYLAND WSC
TX1080033 High RiskWater Type
Surface Water
PFAS Detected
9
Above MCL
2
State
Texas
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
PFOS Perfluorooctane sulfonic acid | 6.80ppt | 170% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFOA Perfluorooctanoic acid | 4.30ppt | 108% of limit
| 4 ppt | ⚠ Exceeds MCL |
PFHxS Perfluorohexane sulfonic acid | 6.40ppt | 64% of limit
| 10 ppt | Below limit |
lithium | 41300.00ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 12.50ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 12.30ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 11.70ppt | No federal limit | — | Unregulated |
PFHpA Perfluoroheptanoic acid | 4.50ppt | No federal limit | — | Unregulated |
Show 1 more compound detected at low levels
| PFBSPerfluorobutane sulfonic acid | 3.00 ppt | No federal limit |
HIDALGO COUNTY MUD 1
TX1080088 Low LevelWater Type
Surface Water
PFAS Detected
4
Above MCL
0
State
Texas
Data Period
2023–2025
PFAS Test Results
| Compound | Detected | vs. EPA Limit | EPA Limit | Status |
|---|---|---|---|---|
lithium | 59400.00ppt | No federal limit | — | Unregulated |
PFBA Perfluorobutanoic acid | 6.20ppt | No federal limit | — | Unregulated |
PFHxA Perfluorohexanoic acid | 4.00ppt | No federal limit | — | Unregulated |
PFPeA Perfluoropentanoic acid | 4.00ppt | No federal limit | — | Unregulated |
Note: ZIP code 78572 is served by 4 separate water utilities.
Results above show data for each system independently.
Data source: EPA Unregulated Contaminant Monitoring Rule, 5th cycle (UCMR 5) — January 2026 release.
UCMR 5 tested ~10,000 public water systems serving more than 25 people between 2023-2025 for 29 PFAS compounds.
Detection values represent the highest single-sample result measured at entry points to the distribution system.