Community Water System · PWS TX0300015
Callahan County WSC
Operator location Clyde, Texas - 86% of 379 violations are health-based (upper-third health share (> 23%)); surface water source; 3,747 served per SDWIS.
- 3,747
- People served (this PWS)
- 379
- EPA violations (this PWS)
- 325
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Callahan County WSC standing, high SDWIS violation third
86% of 379 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 86% is upper-third health share (> 23%). Population rank #9,243 of 29,740 among systems serving 500+.
The verdict
Callahan County WSC sits in the upper third of the sitemap cohort by violation count (379), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is large (3,747; larger served population (> 3,309)), so household exposure scale sits behind the violation mix. Health-based share is 86% - most of this ledger is MCL or treatment-technique exceedance. No UCMR5 PFAS test appears for this system in this extract.
- #9,243 of 29,740
- Population · /systems
- #1,076 of 3,040
- Population · TX
- 379
- Total EPA violations on record
- 86%
- Health-based (MCL / treatment failure)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 1,119
- County
- Callahan
- School/Daycare
- No
- MCL Violations
- 325
- Monitoring Violations
- 42
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| TTHM | MCL | 267 | 2025 |
| Total Haloacetic Acids (HAA5) | MCL | 54 | 2022 |
| TTHM | MR | 13 | 2021 |
| Chlorine | MR | 12 | 2021 |
| Public Notice | Other | 10 | 2021 |
| Total Haloacetic Acids (HAA5) | MR | 5 | 2021 |
| Nitrite | MR | 4 | 2020 |
| Nitrate | MR | 4 | 2020 |
| Lead and Copper Rule | MR | 4 | 2020 |
| Nitrite | MCL | 4 | 2021 |
| Consumer Confidence Rule | Other | 2 | 2015 |
Violation Count vs. the National Corpus
Callahan County WSC has 379 recorded EPA violations, 93% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 7% carry more. 86% of this system's own violations are health-based (325 of 379), and it ranks #9,243 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)
379 Higher than most more violations than 93% 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
Health-based violations on Callahan County WSC
325 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for TX0300015.
Sources: EPA SDWIS · Texas Commission on Environmental Quality (TCEQ) - Drinking Water Watch
Nationwide peers
379 violations · 3,747 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 Callahan County WSC
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.