Public water system record

Northwest Water

Serves Lake Ketchum, Snohomish County, WA · 99 people served

Federal records show no health-based violations and 3 monitoring/reporting issues for Northwest Water in the last ten years.

  • WA5302287
  • COUPEVILLE
  • WA
  • 99 served

System profile

Source water Groundwater
ZIP 98239
EPA system ID WA5302287

Verify this system on EPA ECHO →

Health-based violations, last 10 years
0
Resolved
0
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
3

Key facts

  • Northwest Water draws water from 3 wells.
  • Record on file since 1991, with 6 health-based violations before October 19, 2016.

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Health-based violations

Since October 2016

Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.

None since October 2016.

Monitoring and reporting issues

Since October 2016

Missed tests or reports, not contaminants found above a limit.

Issue Start date Status
Nitrate
Monitoring and reporting
Jan 1, 2022 Resolved
Lead and Copper Rule
Monitoring and reporting
Jan 1, 2020 Resolved
Consumer Confidence Rule
OTHER
Jul 1, 2016 Resolved

Full record since 1991

EPA's records for Northwest Water go back to 1991. Before October 19, 2016 they list 6 health-based violations (6 archived by EPA without a recorded fix) and 30 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1990s 5 5
2000s 1 22
2010 to October 18, 2016 0 3
2020s 0 2

Most recent health-based violation before October 19, 2016: Total Coliform, began November 2000, Archived.

Show all 6 health-based violations before October 19, 2016
Contaminant Start date Status
Total Coliform
Contaminant limit exceeded
Nov 1, 2000 Archived
Total Coliform
Contaminant limit exceeded
Nov 1, 1998 Archived
Total Coliform
Contaminant limit exceeded
Oct 1, 1998 Archived
Total Coliform
Contaminant limit exceeded
Aug 1, 1998 Archived
Total Coliform
Contaminant limit exceeded
Jul 1, 1998 Archived
Total Coliform
Contaminant limit exceeded
Jul 1, 1997 Archived

Where the water comes from

Northwest Water draws water from 3 wells.

Annual water quality report

Northwest Water must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.

Systems serving 500 or fewer people may meet the rule by telling customers the report is available on request, so you may need to ask Northwest Water for a copy.

Find a posted report with EPA's Consumer Confidence Report search

Testing your own water

To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Washington.