Community Water System · PWS MO5010751
Southwest City PWS
Operator location Southwest City, Missouri - 29% of 82 violations are health-based (upper-third health share (> 23%)); groundwater source; 976 served per SDWIS.
- 976
- People served (this PWS)
- 82
- EPA violations (this PWS)
- 24
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Southwest City PWS standing, high SDWIS violation third
29% of 82 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 29% is upper-third health share (> 23%). Population rank #20,081 of 29,740 among systems serving 500+.
The verdict
Southwest City PWS sits in the upper third of the sitemap cohort by violation count (82), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (976; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 29% - most of this ledger is MCL or treatment-technique exceedance. No UCMR5 PFAS test appears for this system in this extract.
- #20,081 of 29,740
- Population · /systems
- #499 of 738
- Population · MO
- 82
- Total EPA violations on record
- 29%
- 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
- 337
- County
- McDonald
- School/Daycare
- No
- MCL Violations
- 17
- Monitoring Violations
- 49
- Treatment Tech Violations
- 7
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 48 | 2010 |
| Coliform (TCR) | MCL | 17 | 2000 |
| Groundwater Rule | TT | 7 | 2025 |
| Consumer Confidence Rule | Other | 4 | 2025 |
| LEAD AND COPPER RULE REVISIONS | RPT | 2 | 2024 |
| Lead and Copper Rule | MR | 1 | 2004 |
Violation Count vs. the National Corpus
Southwest City PWS has 82 recorded EPA violations, 69% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 31% carry more. 29% of this system's own violations are health-based (24 of 82), and it ranks #20,081 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)
82 Around the middle fewer violations than 31% 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 Southwest City PWS
24 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for MO5010751.
Sources: EPA SDWIS · Missouri DNR, Public Drinking Water Branch
Nationwide peers
82 violations · 976 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 Southwest City 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.