Community Water System · PWS TX2050003
City of Mathis
Operator location Mathis, Texas - 73% of 213 violations are health-based (upper-third health share (> 23%)); surface water source; 5,001 served per SDWIS.
- 5,001
- People served (this PWS)
- 213
- EPA violations (this PWS)
- 155
- Health-based (this PWS)
- 2 PFAS
- UCMR5 (this PWS)
City of Mathis standing, high SDWIS violation third
73% of 213 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 73% is upper-third health share (> 23%). UCMR5: lower-third PFAS panel (≤ 2 compounds). Population rank #7,712 of 29,740 among systems serving 500+.
The verdict
City of Mathis sits in the upper third of the sitemap cohort by violation count (213), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is large (5,001; larger served population (> 3,309)), so household exposure scale sits behind the violation mix. Health-based share is 73% - most of this ledger is MCL or treatment-technique exceedance. UCMR5 detected 2 PFAS compounds (lower-third PFAS panel (≤ 2 compounds)).
- #7,712 of 29,740
- Population · /systems
- #848 of 3,040
- Population · TX
- 213
- Total EPA violations on record
- 73%
- Health-based (MCL / treatment failure)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
2 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 1,667
- County
- San Patricio
- School/Daycare
- No
- MCL Violations
- 146
- Monitoring Violations
- 31
- Treatment Tech Violations
- 9
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| TTHM | MCL | 122 | 2025 |
| Public Notice | Other | 13 | 2025 |
| Total Haloacetic Acids (HAA5) | MCL | 12 | 2018 |
| Coliform (TCR) | MCL | 12 | 2013 |
| Coliform (TCR) | MR | 12 | 2013 |
| Lead and Copper Rule | MR | 11 | 2024 |
| Surface Water Treatment Rule | TT | 6 | 2005 |
| Interim Enhanced Surface Water Treatment Rule | MR | 4 | 2023 |
| TTHM | MR | 4 | 2023 |
| LEAD AND COPPER RULE REVISIONS | TT | 3 | 2024 |
| LEAD AND COPPER RULE REVISIONS | RPT | 3 | 2024 |
| Consumer Confidence Rule | Other | 2 | 2024 |
Violation Count vs. the National Corpus
City of Mathis has 213 recorded EPA violations, 86% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 14% carry more. 73% of this system's own violations are health-based (155 of 213), and it ranks #7,712 of 29,740 by population served among that same cohort.
EPA violations vs. the national water-system corpus
Public water systems serving 500+ people (EPA SDWIS)
213 Higher than most more violations than 86% of 29,740 water systems
the national water-system corpus, bucketed by value
Each bar is a band; taller bars hold more water systems. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source EPA SDWIS · 2026-05-15
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 3 of 116 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFTrDA | 5/17/2023 | <7.00 ppt | 7.00 ppt | Not Detected |
| 4:2 FTS | 5/17/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBA | 5/17/2023 | 6.50 ppt | 5.00 ppt | Detected |
| HFPO-DA | 5/17/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| ADONA | 5/17/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMPA | 5/17/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 5/17/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| 8:2 FTS | 5/17/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFUnA | 5/17/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFHxA | 5/17/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDoA | 5/17/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDA | 5/17/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFOA | 5/17/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFHpS | 5/17/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| 9Cl-PF3ONS | 5/17/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| NFDHA | 5/17/2023 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFPeS | 5/17/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| NEtFOSAA | 5/17/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| NMeFOSAA | 5/17/2023 | <6.00 ppt | 6.00 ppt | Not Detected |
| PFTA | 5/17/2023 | <8.00 ppt | 8.00 ppt | Not Detected |
| 6:2 FTS | 5/17/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFBS | 5/17/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeA | 5/17/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFEESA | 5/17/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpA | 5/17/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxS | 5/17/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFNA | 5/17/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOS | 5/17/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFMBA | 5/17/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| 6:2 FTS | 2/22/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFMBA | 2/22/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| 8:2 FTS | 2/22/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFMPA | 2/22/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFPeA | 2/22/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| 4:2 FTS | 2/22/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFEESA | 2/22/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| NFDHA | 2/22/2023 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFPeS | 2/22/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFTrDA | 2/22/2023 | <7.00 ppt | 7.00 ppt | Not Detected |
| NMeFOSAA | 2/22/2023 | <6.00 ppt | 6.00 ppt | Not Detected |
| PFBA | 2/22/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFHpA | 2/22/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpS | 2/22/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| HFPO-DA | 2/22/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| ADONA | 2/22/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| NEtFOSAA | 2/22/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| 9Cl-PF3ONS | 2/22/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 2/22/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFUnA | 2/22/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFHxA | 2/22/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
Health-based violations on City of Mathis
155 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for TX2050003.
Sources: EPA SDWIS · Texas Commission on Environmental Quality (TCEQ) - Drinking Water Watch
Nationwide peers
213 violations · 5,001 served: nearest cross-state SDWIS matches.
Cross-state systems with comparable violation load
Nearest cross-state community systems (500+ served) by total SDWIS violations on record.
Cross-state systems with similar served population
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with City of Mathis
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Texas compares on the same EPA violation measures. Texas systems
- Check whether PFAS was detected at this system under UCMR5 testing. PFAS guide
- Find and compare another public water system by name or PWSID. Search systems
EPA SDWIS and UCMR5 figures are informational only, not a substitute for a certified lab test of your own tap water.