Community Water System · PWS OR4100003
Adair Village Water System
Operator location Adair Village, Oregon - smaller served population (≤ 999) at 875 people served; 230 SDWIS violations on record from surface water sources.
- 875
- People served (this PWS)
- 230
- EPA violations (this PWS)
- 17
- Health-based (this PWS)
- No PFAS
- UCMR5 (this PWS)
Adair Village Water System standing, high SDWIS violation third
875 people served (SDWIS) - smaller served population (≤ 999). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 7% is middle-third health share (≤ 23%). UCMR5: UCMR5 tested, none detected. Population rank #21,484 of 29,740 among systems serving 500+.
The verdict
Adair Village Water System sits in the upper third of the sitemap cohort by violation count (230), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (875; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 7% (middle-third health share (≤ 23%)). UCMR5 tested this system and reported no PFAS above the minimum reporting level.
- #21,484 of 29,740
- Population · /systems
- #271 of 373
- Population · OR
- 230
- Total EPA violations on record
- 7%
- 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
- 453
- County
- Benton
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 206
- Treatment Tech Violations
- 17
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Surface Water Treatment Rule | MR | 45 | 2020 |
| Interim Enhanced Surface Water Treatment Rule | MR | 20 | 2020 |
| Surface Water Treatment Rule | TT | 17 | 2001 |
| TTHM | MR | 9 | 2023 |
| Total Haloacetic Acids (HAA5) | MR | 8 | 2023 |
| Consumer Confidence Rule | Other | 6 | 2023 |
| Revised Total Coliform Rule | MON | 4 | 2024 |
| Arsenic | MR | 3 | 2007 |
| Lead and Copper Rule | MR | 3 | 1994 |
| cis-1,2-Dichloroethylene | MR | 2 | 2007 |
| o-Dichlorobenzene | MR | 2 | 2007 |
| p-Dichlorobenzene | MR | 2 | 2007 |
| Vinyl chloride | MR | 2 | 2007 |
| 1,1-Dichloroethylene | MR | 2 | 2007 |
| trans-1,2-Dichloroethylene | MR | 2 | 2007 |
| 1,2-Dichloroethane | MR | 2 | 2007 |
| 1,1,1-Trichloroethane | MR | 2 | 2007 |
| 1,2-Dichloropropane | MR | 2 | 2007 |
| Benzene | MR | 2 | 2007 |
| Toluene | MR | 2 | 2007 |
| Ethylbenzene | MR | 2 | 2007 |
| 1,2,4-Trichlorobenzene | MR | 2 | 2007 |
| Carbon tetrachloride | MR | 2 | 2007 |
| Trichloroethylene | MR | 2 | 2007 |
| 1,1,2-Trichloroethane | MR | 2 | 2007 |
| Tetrachloroethylene | MR | 2 | 2007 |
| Methoxychlor | MR | 2 | 2020 |
| Toxaphene | MR | 2 | 2020 |
| Dalapon | MR | 2 | 2020 |
| Diquat | MR | 2 | 2020 |
Violation Count vs. the National Corpus
Adair Village Water System has 230 recorded EPA violations, 87% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 13% carry more. 7% of this system's own violations are health-based (17 of 230), and it ranks #21,484 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)
230 Higher than most more violations than 87% 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
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 116 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| 8:2 FTS | 8/23/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFMPA | 8/23/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFPeA | 8/23/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMBA | 8/23/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFEESA | 8/23/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFTA | 8/23/2023 | <8.00 ppt | 8.00 ppt | Not Detected |
| PFBA | 8/23/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFTrDA | 8/23/2023 | <7.00 ppt | 7.00 ppt | Not Detected |
| NEtFOSAA | 8/23/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| NMeFOSAA | 8/23/2023 | <6.00 ppt | 6.00 ppt | Not Detected |
| PFPeS | 8/23/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFHxA | 8/23/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBS | 8/23/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpA | 8/23/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxS | 8/23/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFNA | 8/23/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOS | 8/23/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOA | 8/23/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| 4:2 FTS | 8/23/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDoA | 8/23/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| 6:2 FTS | 8/23/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFUnA | 8/23/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 8/23/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| 9Cl-PF3ONS | 8/23/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| ADONA | 8/23/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| HFPO-DA | 8/23/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFHpS | 8/23/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDA | 8/23/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| NFDHA | 8/23/2023 | <20.00 ppt | 20.00 ppt | Not Detected |
| 6:2 FTS | 5/9/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFHpA | 5/9/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxS | 5/9/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFNA | 5/9/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOS | 5/9/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFOA | 5/9/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFDA | 5/9/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDoA | 5/9/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFUnA | 5/9/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| 9Cl-PF3ONS | 5/9/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| ADONA | 5/9/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBS | 5/9/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBA | 5/9/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFHxA | 5/9/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| 4:2 FTS | 5/9/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| 8:2 FTS | 5/9/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFMPA | 5/9/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFPeA | 5/9/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMBA | 5/9/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFEESA | 5/9/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| NFDHA | 5/9/2023 | <20.00 ppt | 20.00 ppt | Not Detected |
Population served record for Adair Village Water System
EPA SDWIS lists 875 people served and 453 connections for this PWS, confirm the service-area footprint on the federal report before comparing to municipal census totals.
Sources: EPA SDWIS
Nationwide peers
230 violations · 875 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 Village Water System
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.