
Our vision: A safe and healthy Kitsap County for all.
Water Quality Reports
The Kitsap Public Health District's Water Pollution Identification & Correction (PIC) program protects public health and prevents fecal pollution in Kitsap County surface waters.
Health District staff sample dozens of streams and swimming beaches across the county for fecal bacteria, an indicator of fecal pollution caused by human or animal waste. Fecal pollution can carry viruses and harmful bacteria that make people sick.
We use water sampling results to notify the public of potential health risks, and to find and fix fecal pollution problems. This helps keep our streams, swimming beaches and shellfish beds safe and healthy for the public to enjoy.
Read the 2024 Water Quality Monitoring Report
The Kitsap Public Health District's Water Pollution Identification & Correction (PIC) program protects public health and prevents fecal pollution in Kitsap County surface waters.
Health District staff sample dozens of streams and swimming beaches across the county for fecal bacteria, an indicator of fecal pollution caused by human or animal waste. Fecal pollution can carry viruses and harmful bacteria that make people sick.
We use water sampling results to notify the public of potential health risks, and to find and fix fecal pollution problems. This helps keep our streams, swimming beaches and shellfish beds safe and healthy for the public to enjoy.
Read our yearly Water Quality Report.
Current Advisories
Active swimming beach, cyanobacteria (blue-green algae), and sewage spill advisories are listed below. Visit our swimming beach monitoring page to learn more and see a list of the beaches we monitor. For shellfish advisories, see our shellfish safety page.
Cyanobacteria Warning
Location:
Kitsap Lake
Start Date:
August 8, 2025
Status:
Active
A cyanobacteria warning has been issued for Kitsap Lake. Avoid all contact with the water in Kitsap Lake due to potentially toxic cyanobacteria, also known as blue-green algae.
There are many different types of cyanobacteria and not all blooms are toxic. The cyanobacteria in Kitsap Lake are known to produce toxins.
Cyanobacteria (blue-green algae) are bacteria that occur naturally in water.
Because toxic cyanobacteria can make people sick, and can kill pets, fish, waterfowl and livestock, the public is advised to:
Avoid all contact with the lake water until further notice. This means no swimming, wading, or types of water play where water could be swallowed or get in the mouth, nose or eyes (especially in areas where blooms are concentrated).
Avoid ingesting lake or stream water. If a resident draws lake water for drinking purposes, they are encouraged to drink bottled water until further notice.
Limit access of pets and livestock to the lake.
Avoid eating fish caught during the algae bloom.
Rinse boats and trailers thoroughly before going to another lake.

Swimmer's Itch
Location:
All Lakes
Start Date:
Status:
Active
Swimmer's Itch (cercarial dermatitis) is caused by an allergic reaction to a parasite.
Swimmers should wear waterproof sunscreen and shower or vigorously towel-off immediately after swimming in a lake.
This list displays water contact advisories that were removed (expired) in the current calendar year. These advisories are no longer in effect. Check the list above for active advisories.
Island Lake
Advisory:
Swimming Beach Closure
Start Date:
June 11, 2025
Date Removed:
June 13, 2025
Status:
Removed
Portion of Liberty Bay/Keyport shoreline
Advisory:
Sewage Spill Advisory
Start Date:
April 30, 2025
Date Removed:
May 7, 2025
Status:
Removed
