Community Water System · PWS IA5260017
Oxford Water Supply
Operator location Oxford, Iowa - smaller served population (≤ 999) at 722 people served; 127 SDWIS violations on record from groundwater sources.
- 722
- People served (this PWS)
- 127
- EPA violations (this PWS)
- 15
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Oxford Water Supply standing, high SDWIS violation third
722 people served (SDWIS) - smaller served population (≤ 999). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 12% is middle-third health share (≤ 23%). Population rank #23,911 of 29,740 among systems serving 500+.
The verdict
Oxford Water Supply sits in the upper third of the sitemap cohort by violation count (127), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (722; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 12% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- #23,911 of 29,740
- Population · /systems
- #442 of 545
- Population · IA
- 127
- Total EPA violations on record
- 12%
- 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
- 373
- County
- Johnson
- School/Daycare
- No
- MCL Violations
- 15
- Monitoring Violations
- 69
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Total Haloacetic Acids (HAA5) | MR | 15 | 2013 |
| Combined Radium (-226 and -228) | MCL | 15 | 1985 |
| Coliform (TCR) | MR | 14 | 2014 |
| Consumer Confidence Rule | Other | 14 | 2024 |
| Chlorine | MR | 10 | 2006 |
| Lead and Copper Rule | MR | 9 | 2006 |
| Nitrate | MR | 7 | 2024 |
| Revised Total Coliform Rule | MON | 4 | 2023 |
| TTHM | MR | 4 | 2013 |
| Revised Total Coliform Rule | RPT | 4 | 2018 |
| Gross Alpha, Excl. Radon and U | MR | 3 | 1991 |
| Arsenic | MR | 3 | 2001 |
Violation Count vs. the National Corpus
Oxford Water Supply has 127 recorded EPA violations, 78% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 22% carry more. 12% of this system's own violations are health-based (15 of 127), and it ranks #23,911 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)
127 Higher than most more violations than 78% 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 Oxford Water Supply
EPA SDWIS lists 722 people served and 373 connections for this PWS, confirm the service-area footprint on the federal report before comparing to municipal census totals.
Sources: EPA SDWIS
Nationwide peers
127 violations · 722 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 Oxford 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.