Community Water System · PWSID OR4100688

J & M Mobile Home Park

Serves 45 peopleGroundwaterOwner: PrivateRainier, Oregon
1 open treatment violation.

Open for: Revised Total Coliform Rule. EPA counts treatment-technique violations as health-based: a required protective step was not done. It is not a measurement of contamination.

On record since 1994: 21 violations. 1 over the limit · 2 treatment lapses · 11 missed or late tests · 7 notices or reports. Most recent began 2025-08-23.

For this year's test results, ask the utility for its annual Consumer Confidence Report. Every community system must publish one.

1Over the limit
2Treatment lapse1 open
11Missed or late test
7Notice or report

More violations on record than 79% of active water systems in Oregon. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

1994 · Missed or late test: 21994 · Missed or late test: 219951999 · Notice or report: 12000 · Notice or report: 22000 · Notice or report: 220002001 · Notice or report: 22001 · Notice or report: 22003 · Missed or late test: 1200520102011 · Missed or late test: 12015 · Missed or late test: 120152017 · Missed or late test: 22017 · Missed or late test: 22019 · Missed or late test: 120202021 · Treatment lapse: 12021 · Missed or late test: 12021 · Notice or report: 12023 · Over the limit: 12023 · Missed or late test: 12024 · Notice or report: 12025 · Treatment lapse: 12025 · Missed or late test: 12025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
5% over the limit · 110% treatment lapse · 252% missed or late test · 1133% notice or report · 7

Across Oregon, 85% of violations are missed or late tests and 2% are water over a limit.

What you can do

  • Total Coliform Bacteria: If your water system has coliform violations, consider boiling water or using bottled water until the system confirms the issue is resolved. Contact your water provider for their latest test results and any boil-water advisories.

Lead & copper at the tap

Utilities sample taps in homes most likely to have lead pipes, and report the 90th-percentile result: 9 in 10 homes sampled came in at or below this number. Above the red line (the action level) the utility must act. The action level is not a safe level; EPA's health goal for lead is zero. EPA's file does not date these results, so they are shown highest first.

Lead, 90th percentile 3 results on file · action level 15 ppb

1 ppb
0 ppb
0 ppb

Open now (1)

  1. 2025-08-23Revised Total Coliform RuleTTOpen

Every violation on record

  1. 2025-08-23Revised Total Coliform RuleTTOpen
  2. 2025-07-01Revised Total Coliform RuleMONBack in compliance
  3. 2024-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  4. 2023-12-01Revised Total Coliform RuleMCLBack in compliance
  5. 2023-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  6. 2021-05-22Public NoticePN Violation for NPDWR ViolationBack in compliance
  7. 2021-03-02Revised Total Coliform RuleTTBack in compliance
  8. 2021-01-27E. ColiMonitoring, Source Water (GWR)Back in compliance
  9. 2019-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  10. 2017-01-01Nitrate ×2Monitoring, RegularBack in compliance
  11. 2015-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  12. 2011-01-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  13. 2003-01-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  14. 2001-10-19Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  15. 2001-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  16. 2000-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  17. 2000-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  18. 1999-10-19Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  19. 1994-07-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance
  20. 1994-01-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance

System details

Population served45
Service connections29
Water sourceGroundwater
System typeCommunity Water System
OwnerPrivate
StatusActive
CityRainier
EPA ZIP on file97048

Areas served

  • Columbia County

Reading this record

J & M Mobile Home Park is a community water system that draws from groundwater and serves about 45 people in Rainier, Oregon. Everything above comes from the EPA's Safe Drinking Water Information System (SDWIS), where states report every violation by every public water system.

Four kinds of violation. Only one is a measurement of the water: over the limit means a test came back above a legal maximum (an MCL). A treatment lapse means a required protective step was not done, such as disinfection, filtration, fixing a defect an inspector found, or filing a lead-pipe inventory. A missed or late test means a required test was skipped or never reported. That is the most common kind, and the most misread: it does not mean the water was bad, and it does not mean the water was fine. Notices and reports covers public notices and the annual Consumer Confidence Report.

Status. “Back in compliance” means the state recorded a return to compliance. “Period ended” means the violation's compliance period is over but no return to compliance was ever filed, which is common in older records. EPA's federal copy lags state records by months, so call the utility for anything current.