Community Water System · PWS TX0910052
Tanglewood on Texoma
Operator location Austin, Texas - 39% of 109 violations are health-based (upper-third health share (> 23%)); surface water source; 4,341 served per SDWIS.
- 4,341
- People served (this PWS)
- 109
- EPA violations (this PWS)
- 43
- Health-based (this PWS)
- 6 PFAS
- UCMR5 (this PWS)
Tanglewood on Texoma standing, high SDWIS violation third
39% of 109 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 39% is upper-third health share (> 23%). UCMR5: upper-third PFAS panel (> 4 compounds). Population rank #8,416 of 29,740 among systems serving 500+.
The verdict
Tanglewood on Texoma sits in the upper third of the sitemap cohort by violation count (109), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is large (4,341; larger served population (> 3,309)), so household exposure scale sits behind the violation mix. Health-based share is 39% - most of this ledger is MCL or treatment-technique exceedance. UCMR5 detected 6 PFAS compounds (upper-third PFAS panel (> 4 compounds)).
- #8,416 of 29,740
- Population · /systems
- #950 of 3,040
- Population · TX
- 109
- Total EPA violations on record
- 39%
- 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
- Private
- Connections
- 1,515
- County
- Grayson
- School/Daycare
- No
- MCL Violations
- 43
- Monitoring Violations
- 64
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| TTHM | MCL | 43 | 2015 |
| 1,2,4-Trichlorobenzene | MR | 3 | 2009 |
| Xylenes, Total | MR | 3 | 2009 |
| o-Dichlorobenzene | MR | 3 | 2009 |
| 1,1-Dichloroethylene | MR | 3 | 2009 |
| 1,1,1-Trichloroethane | MR | 3 | 2009 |
| Tetrachloroethylene | MR | 3 | 2009 |
| Benzene | MR | 3 | 2009 |
| Styrene | MR | 3 | 2009 |
| DICHLOROMETHANE | MR | 3 | 2009 |
| Ethylbenzene | MR | 3 | 2009 |
| 1,2-Dichloroethane | MR | 3 | 2009 |
| CHLOROBENZENE | MR | 3 | 2009 |
| cis-1,2-Dichloroethylene | MR | 3 | 2009 |
| p-Dichlorobenzene | MR | 3 | 2009 |
| Toluene | MR | 3 | 2009 |
| Vinyl chloride | MR | 3 | 2009 |
| 1,1,2-Trichloroethane | MR | 3 | 2009 |
| Carbon tetrachloride | MR | 3 | 2009 |
| trans-1,2-Dichloroethylene | MR | 3 | 2009 |
| 1,2-Dichloropropane | MR | 3 | 2009 |
| Trichloroethylene | MR | 3 | 2009 |
| Public Notice | Other | 2 | 2015 |
| Lead and Copper Rule | MR | 1 | 2013 |
Violation Count vs. the National Corpus
Tanglewood on Texoma has 109 recorded EPA violations, 75% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 25% carry more. 39% of this system's own violations are health-based (43 of 109), and it ranks #8,416 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)
109 Around the middle fewer violations than 25% 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. 11 of 286 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| 8:2 FTS | 7/16/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFHxA | 7/16/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 7/16/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| 9Cl-PF3ONS | 7/16/2025 | <2.00 ppt | 2.00 ppt | Not Detected |
| ADONA | 7/16/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| HFPO-DA | 7/16/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFBA | 7/16/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| 6:2 FTS | 7/16/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 7/16/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFUnA | 7/16/2025 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFMPA | 7/16/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFPeA | 7/16/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMBA | 7/16/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFEESA | 7/16/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| NFDHA | 7/16/2025 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFDoA | 7/16/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpS | 7/16/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpA | 7/16/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFTA | 7/16/2025 | <8.00 ppt | 8.00 ppt | Not Detected |
| PFTrDA | 7/16/2025 | <7.00 ppt | 7.00 ppt | Not Detected |
| NEtFOSAA | 7/16/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| NMeFOSAA | 7/16/2025 | <6.00 ppt | 6.00 ppt | Not Detected |
| PFPeS | 7/16/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOA | 7/16/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOS | 7/16/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFHxS | 7/16/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBS | 7/16/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFNA | 7/16/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFDA | 7/16/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| 9Cl-PF3ONS | 7/16/2025 | <2.00 ppt | 2.00 ppt | Not Detected |
| ADONA | 7/16/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| HFPO-DA | 7/16/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFBA | 7/16/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| NEtFOSAA | 7/16/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 7/16/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 7/16/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFPeA | 7/16/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| 6:2 FTS | 7/16/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFMBA | 7/16/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFEESA | 7/16/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| NFDHA | 7/16/2025 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFPeS | 7/16/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFHpS | 7/16/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMPA | 7/16/2025 | <4.00 ppt | 4.00 ppt | Not Detected |
| 8:2 FTS | 7/16/2025 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFUnA | 7/16/2025 | <2.00 ppt | 2.00 ppt | Not Detected |
| PFTA | 7/16/2025 | <8.00 ppt | 8.00 ppt | Not Detected |
| NMeFOSAA | 7/16/2025 | <6.00 ppt | 6.00 ppt | Not Detected |
| PFHpA | 7/16/2025 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFTrDA | 7/16/2025 | <7.00 ppt | 7.00 ppt | Not Detected |
Health-based violations on Tanglewood on Texoma
43 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for TX0910052.
Sources: EPA SDWIS · Texas Commission on Environmental Quality (TCEQ) - Drinking Water Watch
Nationwide peers
109 violations · 4,341 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 Tanglewood on Texoma
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.