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Public water system record

Oysterville Water

Serves an area of Pacific County, WA · 72 people served

Federal records show 9 health-based violations and no monitoring/reporting issues for Oysterville Water in the last ten years. The most serious issue in this window was a resolved Haloacetic Acids (HAA5) violation.

  • WA5329240
  • OYSTERVILLE
  • WA
  • 72 served

System profile

Source water Groundwater
ZIP 98641
EPA system ID WA5329240

Verify this system on EPA ECHO →

Health-based violations, last 10 years
9
Resolved
9
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
0

Key facts

  • Oysterville Water draws water from 1 well.
  • Highest measured level in the last 10 years: Haloacetic Acids (HAA5), 102 µg/L, federal limit 60 µg/L (1.7 times the limit), 2019.
  • Record on file since 1992, with 3 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 75 service lines.

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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.

Contaminant Rule family Start date Status Acute
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 72.7 µg/L, federal limit 60 µg/L (1.2 times the limit)
 220 Jul 1, 2020 Resolved No
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 95.4 µg/L, federal limit 60 µg/L (1.6 times the limit)
 220 Apr 1, 2020 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 84.2 µg/L, federal limit 80 µg/L (1.1 times the limit)
 220 Apr 1, 2020 Resolved No
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 100 µg/L, federal limit 60 µg/L (1.7 times the limit)
 220 Jan 1, 2020 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 88.2 µg/L, federal limit 80 µg/L (1.1 times the limit)
 220 Jan 1, 2020 Resolved No
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 102 µg/L, federal limit 60 µg/L (1.7 times the limit)
 220 Oct 1, 2019 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 93.2 µg/L, federal limit 80 µg/L (1.2 times the limit)
 220 Oct 1, 2019 Resolved No
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 80.1 µg/L, federal limit 60 µg/L (1.3 times the limit)
 220 Jul 1, 2019 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 86.8 µg/L, federal limit 80 µg/L (1.1 times the limit)
 220 Jul 1, 2019 Resolved No

Full record since 1992

EPA's records for Oysterville Water go back to 1992. Before October 19, 2016 they list 3 health-based violations (2 resolved, 1 archived by EPA without a recorded fix) and 9 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1990s 0 8
2000s 1 1
2010 to October 18, 2016 2 0
October 19, 2016 to 2019 4 0
2020s 5 0

Most recent health-based violation before October 19, 2016: Total Coliform (acute), began September 2011, Resolved.

Show all 3 health-based violations before October 19, 2016
Contaminant Start date Status
Total Coliform (acute)
Contaminant limit exceeded
 Sep 1, 2011 Resolved
Total Coliform (acute)
Contaminant limit exceeded
 Jul 1, 2011 Resolved
Total Coliform
Contaminant limit exceeded
 Nov 1, 2000 Archived

What the violations mean

Haloacetic Acids (HAA5)

5 incidents

Haloacetic acid byproducts exceeded the federal limit

Long-term exposure to HAAs may increase cancer risk

Total Trihalomethanes (TTHMs)

4 incidents

Disinfection byproduct levels exceeded the federal limit

Long-term TTHM exposure may increase bladder cancer risk

Where the water comes from

Oysterville Water draws water from 1 well.

Annual water quality report

Oysterville 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 Oysterville 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.

Certified drinking water labs by state EPA guidance for private wells