Community Water System · PWS OR4100962
Dunn Court Duplexes
Operator location Aloha, Oregon - smaller served population (≤ 999) at 88 people served; 458 SDWIS violations on record from groundwater sources.
- 88
- People served (this PWS)
- 458
- EPA violations (this PWS)
- 83
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Dunn Court Duplexes standing, high SDWIS violation third
88 people served (SDWIS) - smaller served population (≤ 999). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 18% is middle-third health share (≤ 23%).
The verdict
Dunn Court Duplexes sits in the upper third of the sitemap cohort by violation count (458), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (88; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 18% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- 458
- Total EPA violations on record
- 18%
- Health-based (MCL / treatment failure)
- 88
- 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
- Private
- Connections
- 22
- County
- Marion
- School/Daycare
- No
- MCL Violations
- 81
- Monitoring Violations
- 336
- Treatment Tech Violations
- 2
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Arsenic | MCL | 74 | 2019 |
| Coliform (TCR) | MR | 63 | 2015 |
| Public Notice | Other | 21 | 2018 |
| Arsenic | MR | 20 | 2024 |
| Lead and Copper Rule | MR | 13 | 2021 |
| Consumer Confidence Rule | Other | 7 | 2024 |
| Nitrate | MR | 7 | 2009 |
| Coliform (TCR) | MCL | 7 | 2015 |
| cis-1,2-Dichloroethylene | MR | 4 | 2011 |
| Vinyl chloride | MR | 4 | 2011 |
| trans-1,2-Dichloroethylene | MR | 4 | 2011 |
| 1,2-Dichloropropane | MR | 4 | 2011 |
| CHLOROBENZENE | MR | 4 | 2011 |
| Benzene | MR | 4 | 2011 |
| Styrene | MR | 4 | 2011 |
| BHC-GAMMA | MR | 4 | 2011 |
| Toxaphene | MR | 4 | 2011 |
| Dalapon | MR | 4 | 2011 |
| Glyphosate | MR | 4 | 2011 |
| Di(2-ethylhexyl) adipate | MR | 4 | 2011 |
| OXAMYL | MR | 4 | 2011 |
| Di(2-ethylhexyl) phthalate | MR | 4 | 2011 |
| Dinoseb | MR | 4 | 2011 |
| Carbofuran | MR | 4 | 2011 |
| Atrazine | MR | 4 | 2011 |
| LASSO | MR | 4 | 2011 |
| Heptachlor epoxide | MR | 4 | 2011 |
| 2,4-D | MR | 4 | 2011 |
| 2,4,5-TP | MR | 4 | 2011 |
| HEXACHLOROBENZENE | MR | 4 | 2011 |
Violation Count vs. the National Corpus
Dunn Court Duplexes has 458 recorded EPA violations, 95% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 5% carry more. 18% of this system's own violations are health-based (83 of 458), 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)
458 Higher than most more violations than 95% 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 Dunn Court Duplexes
EPA SDWIS lists 88 people served and 22 connections for this PWS, confirm the service-area footprint on the federal report before comparing to municipal census totals.
Sources: EPA SDWIS
Nationwide peers
458 violations · 88 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 Dunn Court Duplexes
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.