Community Water System · PWS TX0570038
City of Cockrell Hill
Operator location Dallas, Texas - 65% of 102 violations are health-based (upper-third health share (> 23%)); surface water source; 3,820 served per SDWIS.
- 3,820
- People served (this PWS)
- 102
- EPA violations (this PWS)
- 66
- Health-based (this PWS)
- 8 PFAS
- UCMR5 (this PWS)
City of Cockrell Hill standing, high SDWIS violation third
65% of 102 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 65% is upper-third health share (> 23%). UCMR5: upper-third PFAS panel (> 4 compounds). Population rank #9,143 of 29,740 among systems serving 500+.
The verdict
City of Cockrell Hill sits in the upper third of the sitemap cohort by violation count (102), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is large (3,820; larger served population (> 3,309)), so household exposure scale sits behind the violation mix. Health-based share is 65% - most of this ledger is MCL or treatment-technique exceedance. UCMR5 detected 8 PFAS compounds (upper-third PFAS panel (> 4 compounds)).
- #9,143 of 29,740
- Population · /systems
- #1,059 of 3,040
- Population · TX
- 102
- Total EPA violations on record
- 65%
- Health-based (MCL / treatment failure)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
8 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 1,097
- County
- Dallas
- School/Daycare
- No
- MCL Violations
- 66
- Monitoring Violations
- 13
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 66 | 2013 |
| Public Notice | Other | 12 | 2008 |
| Coliform (TCR) | MR | 11 | 2004 |
| Consumer Confidence Rule | Other | 7 | 2004 |
| Lead and Copper Rule | MR | 1 | 1992 |
| Revised Total Coliform Rule | MON | 1 | 2025 |
| Coliform (TCR) | Other | 1 | 1991 |
Violation Count vs. the National Corpus
City of Cockrell Hill has 102 recorded EPA violations, 74% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 26% carry more. 65% of this system's own violations are health-based (66 of 102), and it ranks #9,143 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)
102 Around the middle fewer violations than 26% 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. 21 of 116 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFTrDA | 8/23/2023 | <7.00 ppt | 7.00 ppt | Not Detected |
| NEtFOSAA | 8/23/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| NMeFOSAA | 8/23/2023 | <6.00 ppt | 6.00 ppt | Not Detected |
| PFTA | 8/23/2023 | <8.00 ppt | 8.00 ppt | Not Detected |
| PFHxS | 5/2/2023 | 4.20 ppt | 3.00 ppt | Detected |
| PFBS | 5/2/2023 | 5.10 ppt | 3.00 ppt | Detected |
| PFHpA | 5/2/2023 | 3.00 ppt | 3.00 ppt | Detected |
| NEtFOSAA | 5/2/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFNA | 5/2/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFTrDA | 5/2/2023 | <7.00 ppt | 7.00 ppt | Not Detected |
| PFDoA | 5/2/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| NMeFOSAA | 5/2/2023 | <6.00 ppt | 6.00 ppt | Not Detected |
| PFTA | 5/2/2023 | <8.00 ppt | 8.00 ppt | Not Detected |
| PFMPA | 5/2/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFHpS | 5/2/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeS | 5/2/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| NFDHA | 5/2/2023 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFEESA | 5/2/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMBA | 5/2/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFOA | 5/2/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFPeA | 5/2/2023 | 8.90 ppt | 3.00 ppt | Detected |
| PFOS | 5/2/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| 8:2 FTS | 5/2/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 5/2/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFUnA | 5/2/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFDA | 5/2/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxA | 5/2/2023 | 8.60 ppt | 3.00 ppt | Detected |
| 6:2 FTS | 5/2/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 5/2/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| 9Cl-PF3ONS | 5/2/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| ADONA | 5/2/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| HFPO-DA | 5/2/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFBA | 5/2/2023 | 7.30 ppt | 5.00 ppt | Detected |
| NMeFOSAA | 2/22/2023 | <6.00 ppt | 6.00 ppt | Not Detected |
| PFTrDA | 2/22/2023 | <7.00 ppt | 7.00 ppt | Not Detected |
| NEtFOSAA | 2/22/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFTA | 2/22/2023 | <8.00 ppt | 8.00 ppt | Not Detected |
| PFNA | 11/6/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFMBA | 11/6/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFEESA | 11/6/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| NFDHA | 11/6/2023 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFPeS | 11/6/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFHpS | 11/6/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxA | 11/6/2023 | 9.20 ppt | 3.00 ppt | Detected |
| PFOS | 11/6/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOA | 11/6/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 11/6/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFBS | 11/6/2023 | 4.30 ppt | 3.00 ppt | Detected |
| PFDA | 11/6/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDoA | 11/6/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
Health-based violations on City of Cockrell Hill
66 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for TX0570038.
Sources: EPA SDWIS · Texas Commission on Environmental Quality (TCEQ) - Drinking Water Watch
Nationwide peers
102 violations · 3,820 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 Cockrell Hill
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.