BEACH Program

2016 BEACH Program Report

King County

Ten beaches in King County were monitored from May 23 through August 29, 2016. Beaches were monitored almost every week during the swimming season. Results are presented in the following table. Details on each beach are presented in the text below.

Bacteria Results Compared to Standards Geometric Mean 90th Percentile
EPA Swimming Standard ≤ 35 ≤ 276
Alki Beach Park 14 32
Carkeek Park Beach 12 19
Dash Point State Park 12 29
Golden Gardens 28 94
Lincoln Park 17 48
Redondo County Park 18 71
Richey Viewpoint 23 73
Richmond Beach Saltwater Park 12 24
Saltwater State Park 17 59
Seahurst Park 16 32

Alki Beach Park

Alki Beach Park was sampled 13 weeks during the swimming season. Water quality at this beach was good. On June 20th, sampling results were in the swim advisory range, but subsequent sampling showed that bacteria levels had dropped into the safe swimming range.

This beach was closed to swimming due to a sewage spill on January 21-25, 2016.

Dash Point State Park Beach

Dash Point State Park Beach

Carkeek Park Beach

Carkeek Park beach was sampled 13 weeks during the swimming season. Water quality at this beach was excellent and met swimming standards during all periods sampled.

This beach was closed to swimming due to a sewage spill from January 16-27, 2016.


Dash Point State Park Beach

Dash Point State Park beach was sampled 15 weeks during the swimming season. This beach had good water quality. On August 22nd, sampling results were in the swim advisory range, but subsequent sampling showed that bacteria levels had dropped into the safe swimming range.



Golden Gardens Beach

Golden Gardens beach was sampled 13 weeks during the swimming season. During the 2016 season, this beach had good water quality. On July 5th, sampling results were in the swim advisory range, but subsequent sampling showed that bacteria levels had dropped into the safe swimming range.

Golden Gardens beach in King County

Golden Gardens Beach


Lincoln Park Beach

Lincoln Park beach was sampled 13 weeks during the swimming season. This beach had very good water quality, meeting swimming standards during all periods sampled.


Redondo County Park Beach

Redondo County Park beach was sampled weekly during the swimming season. This beach had good water quality. On August 8th, sampling results were in the swim closure range, but subsequent sampling showed that bacteria levels had dropped into the safe swimming range.


Richey Viewpoint Beach

Richey Viewpoint beach was sampled 12 weeks during the sample season. This beach had very good water quality, meeting swimming standards during all periods sampled.


Richmond Beach Saltwater Park

Richmond Beach in King County

Richmond Beach

Richmond Beach Saltwater Park was sampled 13 weeks during the swimming season. This beach had very good water quality, meeting swim standards during all periods sampled.


Saltwater State Park Beach

Saltwater State Park beach was sampled weekly during the swimming season. Bacteria levels at this beach were in the swim advisory range on July 13th and August 8th. Subsequent resampling showed that bacteria levels had dropped. No swim advisories were issued.


Seahurst Park Beach

Seahurst Park Beach was sampled 13 weeks during the swimming season. This beach had very good water quality, meeting swim standards during all periods sampled.


Other counties: Clallam |Grays Harbor | Island | Jefferson | King | Kitsap | Mason | Pierce | Skagit | Snohomish | Thurston | Whatcom