Community Water System · PWS MO6010848
Wellsville PWS
Operator location Wellsville, Missouri - 85% of 651 violations are health-based (upper-third health share (> 23%)); surface water source; 1,210 served per SDWIS.
- 1,210
- People served (this PWS)
- 651
- EPA violations (this PWS)
- 553
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Wellsville PWS standing, high SDWIS violation third
85% of 651 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 85% is upper-third health share (> 23%). Population rank #17,724 of 29,740 among systems serving 500+.
The verdict
Wellsville PWS sits in the upper third of the sitemap cohort by violation count (651), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is mid-pack at 1,210 (mid served population (≤ 3,309)). Health-based share is 85% - most of this ledger is MCL or treatment-technique exceedance. No UCMR5 PFAS test appears for this system in this extract.
- #17,724 of 29,740
- Population · /systems
- #437 of 738
- Population · MO
- 651
- Total EPA violations on record
- 85%
- 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
- 424
- County
- Montgomery
- School/Daycare
- No
- MCL Violations
- 432
- Monitoring Violations
- 55
- Treatment Tech Violations
- 121
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Total Haloacetic Acids (HAA5) | MCL | 247 | 2011 |
| TTHM | MCL | 185 | 2011 |
| CARBON, TOTAL | TT | 93 | 2009 |
| Public Notice | Other | 31 | 2023 |
| Surface Water Treatment Rule | TT | 28 | 2001 |
| Coliform (TCR) | MR | 21 | 2014 |
| Revised Total Coliform Rule | MON | 12 | 2022 |
| Consumer Confidence Rule | Other | 6 | 2025 |
| TTHM | MR | 3 | 2022 |
| Total Haloacetic Acids (HAA5) | MR | 3 | 2022 |
| Arsenic | MR | 2 | 1980 |
| Barium | MR | 2 | 1980 |
| Cadmium | MR | 2 | 1980 |
| Chromium | MR | 2 | 1980 |
| Fluoride | MR | 2 | 1980 |
| Nitrate | MR | 2 | 1980 |
| Selenium | MR | 2 | 1980 |
| Mercury | MR | 2 | 1980 |
Violation Count vs. the National Corpus
Wellsville PWS has 651 recorded EPA violations, 97% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 3% carry more. 85% of this system's own violations are health-based (553 of 651), and it ranks #17,724 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)
651 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 Wellsville PWS
553 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for MO6010848.
Sources: EPA SDWIS · Missouri DNR, Public Drinking Water Branch
Nationwide peers
651 violations · 1,210 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 Wellsville PWS
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Missouri compares on the same EPA violation measures. Missouri 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.