Community Water System · PWS TX1080011
City of Weslaco
Operator location Weslaco, Texas - UCMR5 detected 6 PFAS compounds (upper-third PFAS panel (> 4 compounds)) on this PWS; SDWIS lists 27 violations and 40,033 people served.
- 40,033
- People served (this PWS)
- 27
- EPA violations (this PWS)
- 3
- Health-based (this PWS)
- 6 PFAS
- UCMR5 (this PWS)
City of Weslaco standing, mid SDWIS violation third
UCMR5 detected 6 PFAS compounds - upper-third PFAS panel (> 4 compounds). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 11% is middle-third health share (≤ 23%). UCMR5: upper-third PFAS panel (> 4 compounds). Population rank #1,383 of 29,740 among systems serving 500+.
The verdict
City of Weslaco lands in the middle third by violation volume (27), large enough for peer comparisons without matching the fleet's heaviest ledgers. Population served is large (40,033; larger served population (> 3,309)), so household exposure scale sits behind the violation mix. Health-based share is 11% (middle-third health share (≤ 23%)). UCMR5 detected 6 PFAS compounds (upper-third PFAS panel (> 4 compounds)).
- #1,383 of 29,740
- Population · /systems
- #111 of 3,040
- Population · TX
- 27
- Total EPA violations on record
- 11%
- Health-based (MCL / treatment failure)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
6 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 12,361
- County
- Hidalgo
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 11
- Treatment Tech Violations
- 3
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Consumer Confidence Rule | Other | 5 | 2022 |
| TTHM | MR | 4 | 2014 |
| Total Haloacetic Acids (HAA5) | MR | 4 | 2014 |
| Public Notice | Other | 4 | 2025 |
| LEAD AND COPPER RULE REVISIONS | TT | 2 | 2024 |
| LEAD AND COPPER RULE REVISIONS | RPT | 2 | 2024 |
| Interim Enhanced Surface Water Treatment Rule | MR | 1 | 2008 |
| Chlorite | MR | 1 | 2014 |
| Surface Water Treatment Rule | TT | 1 | 1993 |
| Lead and Copper Rule | MR | 1 | 2013 |
Violation Count vs. the National Corpus
City of Weslaco has 27 recorded EPA violations, 39% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 60% carry more. 11% of this system's own violations are health-based (3 of 27), and it ranks #1,383 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)
27 Lower than most fewer violations than 60% 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. 14 of 91 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFDA | 9/2/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFTA | 9/2/2025 | <8.00 ppt | 8.00 ppt | Not Detected |
| PFBS | 9/2/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpA | 9/2/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxS | 9/2/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFNA | 9/2/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOA | 9/2/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFDoA | 9/2/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxA | 9/2/2025 | 6.20 ppt | 3.00 ppt | Detected |
| PFUnA | 9/2/2025 | <2.00 ppt | 2.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 9/2/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| 9Cl-PF3ONS | 9/2/2025 | <2.00 ppt | 2.00 ppt | Not Detected |
| ADONA | 9/2/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| NMeFOSAA | 9/2/2025 | <6.00 ppt | 6.00 ppt | Not Detected |
| PFTrDA | 9/2/2025 | <7.00 ppt | 7.00 ppt | Not Detected |
| PFOS | 9/2/2025 | 5.00 ppt | 4.00 ppt | Detected |
| NEtFOSAA | 9/2/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| HFPO-DA | 9/2/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFHpS | 9/2/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeS | 9/2/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| NFDHA | 9/2/2025 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFEESA | 9/2/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMBA | 9/2/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeA | 9/2/2025 | 5.90 ppt | 3.00 ppt | Detected |
| PFMPA | 9/2/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| 8:2 FTS | 9/2/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 9/2/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| 6:2 FTS | 9/2/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFBA | 9/2/2025 | 6.30 ppt | 5.00 ppt | Detected |
| PFDoA | 5/6/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpA | 5/6/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFTrDA | 5/6/2025 | <7.00 ppt | 7.00 ppt | Not Detected |
| NEtFOSAA | 5/6/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| NMeFOSAA | 5/6/2025 | <6.00 ppt | 6.00 ppt | Not Detected |
| PFHxS | 5/6/2025 | 4.10 ppt | 3.00 ppt | Detected |
| PFOS | 5/6/2025 | 5.10 ppt | 4.00 ppt | Detected |
| PFHxA | 5/6/2025 | 4.80 ppt | 3.00 ppt | Detected |
| PFBA | 5/6/2025 | 7.60 ppt | 5.00 ppt | Detected |
| PFBS | 5/6/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFNA | 5/6/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFTA | 5/6/2025 | <8.00 ppt | 8.00 ppt | Not Detected |
| 6:2 FTS | 5/6/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFHpS | 5/6/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| NFDHA | 5/6/2025 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFEESA | 5/6/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMBA | 5/6/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMPA | 5/6/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOA | 5/6/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| 4:2 FTS | 5/6/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDA | 5/6/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
UCMR5 PFAS record for City of Weslaco
Open EPA SDWIS federal reports for PWS TX1080011 to cross-check UCMR5 detections and violation codes; state primacy agencies enforce the Safe Drinking Water Act locally.
Sources: EPA SDWIS · Texas Commission on Environmental Quality (TCEQ) - Drinking Water Watch
Nationwide peers
27 violations · 40,033 served: nearest cross-state SDWIS matches.
Cross-state systems near this violation count
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 Weslaco
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.