Unique Mineral Soap Lake | Central Washington

• Soap Lake is a high mineral and alkaline lake
• The lake is known for its unique healing properties

Affordable vacation rentals for short and long term stay at Soap Lake

Soap Lake is a unique mineral canyon lake, located in the desert oasis of the Grand Coulee Valley, 6 miles away from the town of Ephrata. Despite the lake is not hot, it boasts a high mineral content that makes its healing properties far superior to many hot springs. Soap Lake has the most diverse mineral composition in comparison with other mineral lakes on our planet.

The lake is called Soap because of naturally occurring foams on its surface. Also, the water gives slimy or soap-like feelings and acts like soap, removing oils and dirt off of your skin.

Historically, prior to European settlers arriving, the Soap Lake was known by Native Americans under two names. The first one was Smokiam, meaning “healing waters” and the second was Let-to-to-weints, meaning “healing water springs”. European settlers called it “Sanitarium Lake”.

Formed during Ice Age, the lake was created by groundwater leaking through a thick layer of basalt, absorbing minerals from the surrounding rocks and enriching the water and mud. The lake contains 23 minerals and is highly alkaline with a pH of 9.8.

An exceptional feature of Soap Lake is that a body of water has sharp stratification into two layers. The layers have distinguished characteristics and never mix together. The bottom layer is relatively cold, low in oxygen and has the highest concentration of sulfide. The bottom and top layers are separated from each other by a horizontal chemocline that allows some sulfide diffuses into the top.

There are different types of mud: black and blue. Blue mud is considered better because its located deeper in the lake and has a higher mineral concentration, but it is hard to find.

Pick up mud from the bottom, apply and massage it over your body, allow it dry in the sun and then wash it off.

Please keep in mind that it is prohibited to collect and remove mud from the lake.

If you stop at one of four resorts near the lake, you can use the resort’s own beach. If you decide to use other types of accommodations, you can use west or east public beaches, which gives you the same benefits as a private beach.

The lake is pretty shallow and you can find plenty of space and use healing mud in addition to the mineral water of the lake.

When it comes to places to stay in this enchanting destination, a variety of options cater to different preferences. Lakeside resorts offer stunning views of the sunset over the mineral-rich waters, providing a serene backdrop for a soothing retreat. Cozy bed and breakfast establishments capture the town's charm, offering personalized hospitality and a homey atmosphere.

Affordable accommodations can be found in the city of Ephtata, 6 miles away.

Lodging at Soap Lake

For those seeking a more independent experience, vacation rentals dot the lakeshore, providing private accommodations with easy access to the therapeutic waters.

Affordable vacation rentals for short and long term stay at Soap Lake

Location: 6 miles northeast of Ephrata • Central Washington • USA
Open: Seasonal
Clothing: Required
Amenities: Picnic tables, restrooms
Hiking distance: Short
Road Access: Any vehicle
Day-use fees: None

Elevation: 1,106 ft (337 m)