Community Water System · PWS MO6010547
Moscow Mills PWS
Operator location Moscow Mills, Missouri - larger served population (> 3,309) at 4,500 people served; 37 SDWIS violations on record from groundwater sources.
- 4,500
- People served (this PWS)
- 37
- EPA violations (this PWS)
- 8
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Moscow Mills PWS standing, mid SDWIS violation third
4,500 people served (SDWIS) - larger served population (> 3,309). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 22% is middle-third health share (≤ 23%). Population rank #8,241 of 29,740 among systems serving 500+.
The verdict
Moscow Mills PWS lands in the middle third by violation volume (37), large enough for peer comparisons without matching the fleet's heaviest ledgers. Population served is large (4,500; larger served population (> 3,309)), so household exposure scale sits behind the violation mix. Health-based share is 22% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- #8,241 of 29,740
- Population · /systems
- #172 of 738
- Population · MO
- 37
- Total EPA violations on record
- 22%
- 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
- 1,674
- County
- Lincoln
- School/Daycare
- No
- MCL Violations
- 4
- Monitoring Violations
- 20
- Treatment Tech Violations
- 4
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 4 | 2009 |
| Coliform (TCR) | MR | 4 | 2013 |
| Lead and Copper Rule | MR | 4 | 2022 |
| Groundwater Rule | TT | 4 | 2023 |
| Revised Total Coliform Rule | MON | 4 | 2019 |
| Groundwater Rule | MR | 4 | 2020 |
| Stage 2 Disinfectants and Disinfection Byproducts Rule | MR | 2 | 2008 |
| Public Notice | Other | 1 | 2023 |
| Total Haloacetic Acids (HAA5) | MR | 1 | 2025 |
| TTHM | MR | 1 | 2025 |
Violation Count vs. the National Corpus
Moscow Mills PWS has 37 recorded EPA violations, 48% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 51% carry more. 22% of this system's own violations are health-based (8 of 37), and it ranks #8,241 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)
37 Lower than most fewer violations than 51% 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 Moscow Mills PWS
EPA SDWIS lists 4,500 people served and 1,674 connections for this PWS, confirm the service-area footprint on the federal report before comparing to municipal census totals.
Sources: EPA SDWIS · Missouri DNR, Public Drinking Water Branch
Nationwide peers
37 violations · 4,500 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 similar served population
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Moscow Mills 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.