Community Water System · PWS IA2864013
Ryan Water Supply
Operator location Ryan, Iowa - smaller served population (≤ 999) at 350 people served; 133 SDWIS violations on record from groundwater sources.
- 350
- People served (this PWS)
- 133
- EPA violations (this PWS)
- 5
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Ryan Water Supply standing, high SDWIS violation third
350 people served (SDWIS) - smaller served population (≤ 999). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 4% is middle-third health share (≤ 23%).
The verdict
Ryan Water Supply sits in the upper third of the sitemap cohort by violation count (133), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (350; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 4% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- 133
- Total EPA violations on record
- 4%
- Health-based (MCL / treatment failure)
- 350
- People served by this PWS (SDWIS)
- N/A
- PFAS compounds detected (UCMR5)
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
- 160
- County
- Delaware
- School/Daycare
- No
- MCL Violations
- 5
- Monitoring Violations
- 56
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Nitrite | MR | 12 | 2019 |
| Total Haloacetic Acids (HAA5) | MR | 8 | 2010 |
| Arsenic | MR | 8 | 2002 |
| Fluoride | MR | 8 | 1989 |
| Chlorine | MR | 5 | 2005 |
| Nitrite | MCL | 5 | 2018 |
| Nitrate | MR | 5 | 1986 |
| Revised Total Coliform Rule | MON | 4 | 2017 |
| Consumer Confidence Rule | Other | 4 | 2025 |
| TTHM | MR | 4 | 2010 |
| Lead and Copper Rule | MR | 2 | 2017 |
Violation Count vs. the National Corpus
Ryan Water Supply has 133 recorded EPA violations, 79% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 21% carry more. 4% of this system's own violations are health-based (5 of 133), and it ranks unranked by population served among that same cohort.
EPA violations vs. the national water-system corpus
Public water systems serving 500+ people (EPA SDWIS)
133 Higher than most more violations than 79% 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 Ryan Water Supply
EPA SDWIS lists 350 people served and 160 connections for this PWS, confirm the service-area footprint on the federal report before comparing to municipal census totals.
Sources: EPA SDWIS
Nationwide peers
133 violations · 350 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.
What to do with Ryan 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.