Contaminant 5000
Unresolved Phase I/II/V Inorganic Chemical Rules violation cited in 2025 (contaminant 5000).
PWSID OR4100960 · GroundwaterState-owned
750 people served. No health-based SDWIS violations recorded in the past 5 years. 5 remain unresolved. Last cited 1 year ago.
Unresolved Phase I/II/V Inorganic Chemical Rules violation cited in 2025 (contaminant 5000).
Unresolved Drinking water rule (140) violation cited in 2025 (contaminant 3028).
Unresolved Drinking water rule (140) violation cited in 2025 (contaminant 3028).
Unresolved Total Trihalomethanes Rule violation cited in 2025 (total trihalomethanes (tthm)).
Health-based violations exceed an MCL or treatment-technique standard. Monitoring violations are reporting failures with no measured exceedance — they tell you the system isn't fully transparent, not that the water is unsafe today.
Failure to monitor as scheduled
Failure to monitor as scheduled
Failure to monitor as scheduled
Failure to monitor as scheduled
Failure to monitor as scheduled
OTHER; returned to compliance
OTHER; returned to compliance
OTHER; returned to compliance
OTHER; returned to compliance
Woodburn, Oregon (Census place; block-group disparity scores aggregated by centroid containment): a service population of 26,222. Local disparity score for pm2.5 (fine particulate) sits severely above the reference burden (201). Why we surface this →
Low-income
People of color
Under age 5
Over age 64
| Indicator | Disparity score | Reading |
|---|---|---|
| PM2.5 (fine particulate) | 201 | severely above the reference burden |
| Ozone | 25 | well below the reference |
| Nitrogen dioxide (NO₂) | 94 | near the reference |
| Diesel particulate | 164 | well above the reference burden |
| Toxic releases (RSEI) | 109 | near the reference |
| Traffic proximity | 74 | below the reference |
| Lead-paint risk (pre-1960 housing) | 91 | near the reference |
| Superfund site proximity | 0 | well below the reference |
| RMP-facility proximity | 200 | severely above the reference burden |
| Hazardous-waste site proximity | 60 | below the reference |
| Underground storage tanks | 168 | well above the reference burden |
| NPDES wastewater proximity | 38 | well below the reference |
| Drinking-water non-compliance | 165 | well above the reference burden |
Source: Census ACS 2018-2022 (5-year) + USEPA-clone EJ blockgroup stats (raw indicators + EJ disparity mirror).
Source. EPA Safe Drinking Water Information System · retrieved 2026-05-07. Reporting period 2023-01-01 → 2026-05-07.
What this is not. SDWIS records compliance against federal MCLs — not a direct readout of tap-water concentrations. Active health-based violations are not the same as a current crisis; we link to the EPA record so you can verify return-to-compliance status before forming a conclusion.