Community Water System · PWS IA0105002
Adair Municipal Water Supply
Operator location Adair, Iowa - 24% of 148 violations are health-based (upper-third health share (> 23%)); groundwater source; 809 served per SDWIS.
- 809
- People served (this PWS)
- 148
- EPA violations (this PWS)
- 35
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Adair Municipal Water Supply standing, high SDWIS violation third
24% of 148 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 24% is upper-third health share (> 23%). Population rank #22,279 of 29,740 among systems serving 500+.
The verdict
Adair Municipal Water Supply sits in the upper third of the sitemap cohort by violation count (148), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (809; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 24% - most of this ledger is MCL or treatment-technique exceedance. No UCMR5 PFAS test appears for this system in this extract.
- #22,279 of 29,740
- Population · /systems
- #400 of 545
- Population · IA
- 148
- Total EPA violations on record
- 24%
- 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
- 466
- County
- Adair
- School/Daycare
- No
- MCL Violations
- 35
- Monitoring Violations
- 79
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Gross Alpha, Excl. Radon and U | MCL | 16 | 1985 |
| Gross Alpha, Excl. Radon and U | MR | 15 | 1991 |
| Combined Radium (-226 and -228) | MCL | 14 | 1985 |
| Coliform (TCR) | MR | 12 | 2009 |
| Radium-226 | MR | 10 | 1991 |
| Radium-228 | MR | 9 | 1991 |
| Combined Radium (-226 and -228) | MR | 8 | 1991 |
| Fluoride | MCL | 5 | 1984 |
| Lead and Copper Rule | MR | 5 | 2004 |
| Total Haloacetic Acids (HAA5) | MR | 5 | 2005 |
| Cadmium | MR | 3 | 1985 |
| Arsenic | MR | 2 | 1985 |
| Mercury | MR | 2 | 1985 |
| Chromium | MR | 2 | 1985 |
| Fluoride | MR | 2 | 1987 |
| Barium | MR | 2 | 1985 |
| Selenium | MR | 2 | 1985 |
Violation Count vs. the National Corpus
Adair Municipal Water Supply has 148 recorded EPA violations, 81% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 19% carry more. 24% of this system's own violations are health-based (35 of 148), and it ranks #22,279 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)
148 Higher than most more violations than 81% 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 Adair Municipal Water Supply
35 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for IA0105002.
Sources: EPA SDWIS
Nationwide peers
148 violations · 809 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 Adair Municipal Water Supply
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Iowa compares on the same EPA violation measures. Iowa 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.