Community Water System · PWS OK2000930
Canadian Co RWD # 4
Operator location El Reno, Oklahoma - 0% of 31 violations are health-based (lower-third health share (≤ 1%)); groundwater source; 907 served per SDWIS.
- 907
- People served (this PWS)
- 31
- EPA violations (this PWS)
- 0
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Canadian Co RWD # 4 standing, mid SDWIS violation third
0% of 31 recorded violations are health-based - lower-third health share (≤ 1%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 0% is lower-third health share (≤ 1%). Population rank #20,877 of 29,740 among systems serving 500+.
The verdict
Canadian Co RWD # 4 lands in the middle third by violation volume (31), large enough for peer comparisons without matching the fleet's heaviest ledgers. Population served is smaller (907; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is only 0% - almost all of this trail is monitoring or reporting. No UCMR5 PFAS test appears for this system in this extract.
- #20,877 of 29,740
- Population · /systems
- #426 of 558
- Population · OK
- 31
- Total EPA violations on record
- 0%
- 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
- 465
- County
- Canadian
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 26
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 15 | 2006 |
| Lead and Copper Rule | MR | 2 | 1993 |
| Gross Alpha, Excl. Radon and U | MR | 2 | 2001 |
| Combined Radium (-226 and -228) | MR | 2 | 2001 |
| Total Haloacetic Acids (HAA5) | MR | 2 | 2008 |
| Gross Beta Particle Activity | MR | 2 | 2001 |
| E. COLI | MR | 1 | 2024 |
Violation Count vs. the National Corpus
Canadian Co RWD # 4 has 31 recorded EPA violations, 43% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 56% carry more. 0% of this system's own violations are health-based (0 of 31), and it ranks #20,877 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)
31 Lower than most fewer violations than 56% 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 Canadian Co RWD # 4
0 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for OK2000930.
Sources: EPA SDWIS
Nationwide peers
31 violations · 907 served: nearest cross-state SDWIS matches.
Cross-state systems near this violation count
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 Canadian Co RWD # 4
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.