Jefferson, OR
Contamination score
Higher = more contaminated vs. other cities.
Share this with friends & family you care about ❤️
Help someone you love know what's in their water — we'll email them Jefferson's report. No sign-ups, no list.
Reported illness & cancer claims
No claims reported yet. Be the first to add one.
Claims are aggregated from public records and community reports and may be unverified. If you believe your illness is linked to local water, request a consultation.
Self-reported issues
No issues reported yet. Be the first to report one.
Pollution sources & reported claims near your water
Factories, greenhouses, and contaminated sites mapped around the water supply. Tap any circle for detail.
Get water alerts for Jefferson, OR
We'll email you when a new violation, lawsuit, or health report appears for Jefferson's water. Free, unsubscribe anytime.

Public water systems
JEFFERSON, CITY OF
- PWSID:
- OR4100408
- Source:
- Surface water
- Serves:
- 3,348 people
EPA & DEP violations
JEFFERSON, CITY OF
PWSID OR41004087 violationsMonitoring violation — JEFFERSON, CITY OF
low severityOpenEPA SDWIS violation 903102230 (code 36) at JEFFERSON, CITY OF (PWSID OR4100408).
EPA SDWIS · Monitoring violation · Began Mar 1, 2025 · 1 year ago · Source ↗
Monitoring violation — JEFFERSON, CITY OF
low severityOpenEPA SDWIS violation 903102231 (code 36) at JEFFERSON, CITY OF (PWSID OR4100408).
EPA SDWIS · Monitoring violation · Began Mar 1, 2025 · 1 year ago · Source ↗
Monitoring violation — JEFFERSON, CITY OF
low severityOpenEPA SDWIS violation 903102232 (code 36) at JEFFERSON, CITY OF (PWSID OR4100408).
EPA SDWIS · Monitoring violation · Began Mar 1, 2025 · 1 year ago · Source ↗
Monitoring violation — JEFFERSON, CITY OF
low severityResolvedEPA SDWIS violation 903102227 (code 3A) at JEFFERSON, CITY OF (PWSID OR4100408).
EPA SDWIS · Monitoring violation · Began Aug 1, 2021 · 5 years ago · Source ↗
Monitoring violation — JEFFERSON, CITY OF
low severityResolvedEPA SDWIS violation 903102224 (code 36) at JEFFERSON, CITY OF (PWSID OR4100408).
EPA SDWIS · Monitoring violation · Began Jan 1, 2018 · 8 years ago · Source ↗
Monitoring violation — JEFFERSON, CITY OF
low severityResolvedEPA SDWIS violation 903102225 (code 36) at JEFFERSON, CITY OF (PWSID OR4100408).
EPA SDWIS · Monitoring violation · Began Jan 1, 2018 · 8 years ago · Source ↗
Monitoring violation — JEFFERSON, CITY OF
low severityResolvedEPA SDWIS violation 903102226 (code 38) at JEFFERSON, CITY OF (PWSID OR4100408).
EPA SDWIS · Monitoring violation · Began Jan 1, 2018 · 8 years ago · Source ↗
Water-related lawsuits
No lawsuits on record.
In the news & sources
No coverage linked yet.