Community Water System · PWS OK3006110
Indianola RWD #18
Operator location Indianola, Oklahoma - 32% of 84 violations are health-based (upper-third health share (> 23%)); surface water source; 2,000 served per SDWIS.
- 2,000
- People served (this PWS)
- 84
- EPA violations (this PWS)
- 27
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Indianola RWD #18 standing, high SDWIS violation third
32% of 84 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 32% is upper-third health share (> 23%). Population rank #13,651 of 29,740 among systems serving 500+.
The verdict
Indianola RWD #18 sits in the upper third of the sitemap cohort by violation count (84), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is mid-pack at 2,000 (mid served population (≤ 3,309)). Health-based share is 32% - most of this ledger is MCL or treatment-technique exceedance. No UCMR5 PFAS test appears for this system in this extract.
- #13,651 of 29,740
- Population · /systems
- #249 of 558
- Population · OK
- 84
- Total EPA violations on record
- 32%
- 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
- 678
- County
- Pittsburg
- School/Daycare
- No
- MCL Violations
- 26
- Monitoring Violations
- 45
- Treatment Tech Violations
- 1
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 25 | 2012 |
| TTHM | MR | 15 | 2024 |
| Coliform (TCR) | MR | 14 | 2009 |
| Total Haloacetic Acids (HAA5) | MR | 14 | 2016 |
| Consumer Confidence Rule | Other | 3 | 2014 |
| Chlorine | MR | 2 | 2025 |
| LEAD AND COPPER RULE REVISIONS | TT | 1 | 2024 |
| LEAD AND COPPER RULE REVISIONS | RPT | 1 | 2024 |
| TTHM | MCL | 1 | 2025 |
Violation Count vs. the National Corpus
Indianola RWD #18 has 84 recorded EPA violations, 69% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 30% carry more. 32% of this system's own violations are health-based (27 of 84), and it ranks #13,651 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)
84 Around the middle fewer violations than 30% 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 Indianola RWD #18
27 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for OK3006110.
Sources: EPA SDWIS
Nationwide peers
84 violations · 2,000 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 Indianola RWD #18
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.