Community Water System · PWS OK2007707
Dewey Co RWD #3
Operator location Mutual, Oklahoma - smaller served population (≤ 999) at 755 people served; 217 SDWIS violations on record from groundwater sources.
- 755
- People served (this PWS)
- 217
- EPA violations (this PWS)
- 8
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Dewey Co RWD #3 standing, high SDWIS violation third
755 people served (SDWIS) - smaller served population (≤ 999). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 4% is middle-third health share (≤ 23%). Population rank #23,256 of 29,740 among systems serving 500+.
The verdict
Dewey Co RWD #3 sits in the upper third of the sitemap cohort by violation count (217), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (755; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 4% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- #23,256 of 29,740
- Population · /systems
- #470 of 558
- Population · OK
- 217
- Total EPA violations on record
- 4%
- 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
- 302
- County
- Woodward
- School/Daycare
- No
- MCL Violations
- 7
- Monitoring Violations
- 170
- Treatment Tech Violations
- 1
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Lead and Copper Rule | MR | 37 | 2016 |
| Total Haloacetic Acids (HAA5) | MR | 37 | 2025 |
| TTHM | MR | 37 | 2025 |
| Nitrate-Nitrite | MR | 22 | 2017 |
| Consumer Confidence Rule | Other | 21 | 2025 |
| Public Notice | Other | 14 | 2017 |
| Coliform (TCR) | MR | 12 | 2015 |
| Glyphosate | MR | 8 | 2022 |
| 2,4-D | MR | 8 | 2022 |
| Coliform (TCR) | MCL | 7 | 1997 |
| Chlorine | MR | 4 | 2018 |
| Revised Total Coliform Rule | MON | 4 | 2018 |
| Surface Water Treatment Rule | MR | 1 | 1999 |
| LEAD AND COPPER RULE REVISIONS | RPT | 1 | 2024 |
| LEAD AND COPPER RULE REVISIONS | TT | 1 | 2024 |
Violation Count vs. the National Corpus
Dewey Co RWD #3 has 217 recorded EPA violations, 86% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 13% carry more. 4% of this system's own violations are health-based (8 of 217), and it ranks #23,256 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)
217 Higher than most more violations than 86% 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
Population served record for Dewey Co RWD #3
EPA SDWIS lists 755 people served and 302 connections for this PWS, confirm the service-area footprint on the federal report before comparing to municipal census totals.
Sources: EPA SDWIS
Nationwide peers
217 violations · 755 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 smaller service footprints
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Dewey Co RWD #3
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.