Community Water System · PWS OK1010401
Atoka
Operator location Atoka, Oklahoma - 88% of 599 violations are health-based (upper-third health share (> 23%)); surface water source; 2,988 served per SDWIS.
- 2,988
- People served (this PWS)
- 599
- EPA violations (this PWS)
- 529
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Atoka standing, high SDWIS violation third
88% of 599 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 88% is upper-third health share (> 23%). Population rank #10,725 of 29,740 among systems serving 500+.
The verdict
Atoka sits in the upper third of the sitemap cohort by violation count (599), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is mid-pack at 2,988 (mid served population (≤ 3,309)). Health-based share is 88% - most of this ledger is MCL or treatment-technique exceedance. No UCMR5 PFAS test appears for this system in this extract.
- #10,725 of 29,740
- Population · /systems
- #165 of 558
- Population · OK
- 599
- Total EPA violations on record
- 88%
- 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
- 1,364
- County
- Atoka
- School/Daycare
- No
- MCL Violations
- 291
- Monitoring Violations
- 45
- Treatment Tech Violations
- 235
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| CARBON, TOTAL | TT | 160 | 2025 |
| TTHM | MCL | 151 | 2015 |
| Total Haloacetic Acids (HAA5) | MCL | 135 | 2025 |
| Interim Enhanced Surface Water Treatment Rule | TT | 50 | 2023 |
| Surface Water Treatment Rule | TT | 25 | 2024 |
| Total Haloacetic Acids (HAA5) | MR | 10 | 2007 |
| CARBON, TOTAL | MR | 8 | 2004 |
| Nitrate-Nitrite | MR | 6 | 2009 |
| TTHM | MR | 5 | 2004 |
| Coliform (TCR) | MR | 5 | 2008 |
| Coliform (TCR) | MCL | 5 | 2015 |
| Asbestos | MR | 4 | 2020 |
| Chlorite | MR | 4 | 2024 |
| Chlorine dioxide | MRDL | 3 | 2009 |
| Chlorine dioxide | MR | 3 | 2009 |
| Consumer Confidence Rule | Other | 1 | 2012 |
Violation Count vs. the National Corpus
Atoka has 599 recorded EPA violations, 97% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 3% carry more. 88% of this system's own violations are health-based (529 of 599), and it ranks #10,725 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)
599 Higher than most more violations than 97% 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 Atoka
529 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for OK1010401.
Sources: EPA SDWIS
Nationwide peers
599 violations · 2,988 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 near this population served
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Atoka
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Oklahoma compares on the same EPA violation measures. Oklahoma 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.