Lake conditions improve, monitoring continues after sewage leak in Moses Lake


After a sewage spill triggered the Grant County Health District to issue a seven day no contact advisory for areas of Moses Lake, the district says it’s now safe for boating and irrigating.

Latest lake samples taken this week have shown improvement for most of the affect areas.

The district says it still recommends residents stay out of the lake at Blue Heron Park until further testing is complete, but the district says it is not extending the no contact advisory at this time.

The sewage spill on Aug. 28 was caused by a baseball-sized hole in the Knolls Vista siphon. City employees installed a stainless steel band to stop the discharge, but about 64,000 gallons of raw sewage was released into the lake, according to city officials.

In addition to the sewage spill, officials are still monitoring a toxic algae bloom in the lake discovered in July, swimming is not recommended.