Environmental Health
Surface Water (Lakes, Rivers & Streams)
Swimming in Thurston County

Toxic Algae Advisory for Summit Lake Has Been Lifted
Effective 12/15/17

Private Lab Testing Available to Residents

  • There are different methodologies for testing non-potable water and drinking water. Ask to be sure the lab is accredited for the test you are looking for. For drinking water samples the method is EPA 545. This method is used for clean tap samples, but is not appropriate for thick blooms. Discuss your particular situation with the lab. Typically the laboratory will supply the correct sample bottle and directions which are likely to include keeping the sample cold and dark during shipping, ship overnight to the lab, and letting the lab know if there is chlorine in the sample.

Purging Household Plumbing - What to Do After Algal Bloom

After an algal bloom we recommend that all household plumbing be purged prior to resuming water usage. Instructions on how to purge your system are provided here.

Other Items of Interest

  • The Summit Lake Community Association is forming a Water Quality Team to develop water quality related projects and solutions going forward. To stay informed about this team's work, or to get involved, please email the Association at summitlakeslca@gmail.com and ask to be put on the Water Quality Team email list.         

More Information

NEWS & Info
  • Report algae blooms or swimming-related illness
  • General Questions
This page last updated: 02/20/18