Community Water System · PWS OR4100369
Heppner, City Of
Operator location Heppner, Oregon - 40% of 92 violations are health-based (upper-third health share (> 23%)); groundwater source; 1,187 served per SDWIS.
- 1,187
- People served (this PWS)
- 92
- EPA violations (this PWS)
- 37
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Heppner, City Of standing, high SDWIS violation third
40% of 92 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 40% is upper-third health share (> 23%). Population rank #18,045 of 29,740 among systems serving 500+.
The verdict
Heppner, City Of sits in the upper third of the sitemap cohort by violation count (92), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is mid-pack at 1,187 (mid served population (≤ 3,309)). Health-based share is 40% - most of this ledger is MCL or treatment-technique exceedance. No UCMR5 PFAS test appears for this system in this extract.
- #18,045 of 29,740
- Population · /systems
- #233 of 373
- Population · OR
- 92
- Total EPA violations on record
- 40%
- 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
- 705
- County
- Morrow
- School/Daycare
- No
- MCL Violations
- 37
- Monitoring Violations
- 49
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 37 | 2011 |
| Coliform (TCR) | MR | 28 | 2007 |
| Nitrate | MR | 7 | 2006 |
| Consumer Confidence Rule | Other | 3 | 2003 |
| Lead and Copper Rule | MR | 3 | 2003 |
| Total Polychlorinated Biphenyls (PCB) | MR | 2 | 2005 |
| 2,4,5-TP | MR | 2 | 2005 |
| LASSO | MR | 2 | 2005 |
| COLIPHAGE | MR | 1 | 2016 |
| Revised Total Coliform Rule | MON | 1 | 2019 |
| E. COLI | MR | 1 | 2014 |
| Gross Alpha, Excl. Radon and U | MR | 1 | 1976 |
| Combined Radium (-226 and -228) | MR | 1 | 1976 |
Violation Count vs. the National Corpus
Heppner, City Of has 92 recorded EPA violations, 71% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 28% carry more. 40% of this system's own violations are health-based (37 of 92), and it ranks #18,045 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)
92 Around the middle fewer violations than 28% 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 Heppner, City Of
37 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for OR4100369.
Sources: EPA SDWIS
Nationwide peers
92 violations · 1,187 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 near this population served
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Heppner, City Of
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Oregon compares on the same EPA violation measures. Oregon 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.