Community Water System · PWS TX0700042
Mountain Peak Sud
Operator location Midlothian, Texas - UCMR5 detected 5 PFAS compounds (upper-third PFAS panel (> 4 compounds)) on this PWS; SDWIS lists 90 violations and 23,988 people served.
- 23,988
- People served (this PWS)
- 90
- EPA violations (this PWS)
- 13
- Health-based (this PWS)
- 5 PFAS
- UCMR5 (this PWS)
Mountain Peak Sud standing, high SDWIS violation third
UCMR5 detected 5 PFAS compounds - upper-third PFAS panel (> 4 compounds). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 14% is middle-third health share (≤ 23%). UCMR5: upper-third PFAS panel (> 4 compounds). Population rank #2,337 of 29,740 among systems serving 500+.
The verdict
Mountain Peak Sud sits in the upper third of the sitemap cohort by violation count (90), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is large (23,988; larger served population (> 3,309)), so household exposure scale sits behind the violation mix. Health-based share is 14% (middle-third health share (≤ 23%)). UCMR5 detected 5 PFAS compounds (upper-third PFAS panel (> 4 compounds)).
- #2,337 of 29,740
- Population · /systems
- #181 of 3,040
- Population · TX
- 90
- Total EPA violations on record
- 14%
- Health-based (MCL / treatment failure)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
5 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 8,162
- County
- Ellis
- School/Daycare
- No
- MCL Violations
- 13
- Monitoring Violations
- 55
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Chlorine | MR | 44 | 2016 |
| Public Notice | Other | 10 | 2019 |
| Coliform (TCR) | MCL | 9 | 2005 |
| E. COLI | MR | 7 | 2018 |
| Consumer Confidence Rule | Other | 6 | 2015 |
| Total Haloacetic Acids (HAA5) | MCL | 4 | 2019 |
| Lead and Copper Rule | MR | 4 | 2014 |
Violation Count vs. the National Corpus
Mountain Peak Sud has 90 recorded EPA violations, 71% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 29% carry more. 14% of this system's own violations are health-based (13 of 90), and it ranks #2,337 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)
90 Around the middle fewer violations than 29% 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. 19 of 464 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| 6:2 FTS | 9/19/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFTA | 9/19/2023 | <8.00 ppt | 8.00 ppt | Not Detected |
| NMeFOSAA | 9/19/2023 | <6.00 ppt | 6.00 ppt | Not Detected |
| PFTrDA | 9/19/2023 | <7.00 ppt | 7.00 ppt | Not Detected |
| PFMPA | 9/19/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| NEtFOSAA | 9/19/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFDoA | 9/19/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxA | 9/19/2023 | 6.10 ppt | 3.00 ppt | Detected |
| PFUnA | 9/19/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFBA | 9/19/2023 | 9.00 ppt | 5.00 ppt | Detected |
| PFHpA | 9/19/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| HFPO-DA | 9/19/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| ADONA | 9/19/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| 9Cl-PF3ONS | 9/19/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 9/19/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFDA | 9/19/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFOA | 9/19/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOS | 9/19/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| 4:2 FTS | 9/19/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxS | 9/19/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBS | 9/19/2023 | 3.40 ppt | 3.00 ppt | Detected |
| PFHpS | 9/19/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeS | 9/19/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| NFDHA | 9/19/2023 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFEESA | 9/19/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMBA | 9/19/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeA | 9/19/2023 | 7.20 ppt | 3.00 ppt | Detected |
| 8:2 FTS | 9/19/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFNA | 9/19/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFHxA | 9/19/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeS | 9/19/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFHpS | 9/19/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBS | 9/19/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpA | 9/19/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| ADONA | 9/19/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| 9Cl-PF3ONS | 9/19/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| NFDHA | 9/19/2023 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFUnA | 9/19/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFMPA | 9/19/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFHxS | 9/19/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFNA | 9/19/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOS | 9/19/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFTA | 9/19/2023 | <8.00 ppt | 8.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 9/19/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFEESA | 9/19/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDA | 9/19/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeA | 9/19/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| 8:2 FTS | 9/19/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 9/19/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDoA | 9/19/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
UCMR5 PFAS record for Mountain Peak Sud
Open EPA SDWIS federal reports for PWS TX0700042 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
90 violations · 23,988 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 Mountain Peak Sud
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.