Water Division

The Water Division of the Public Works Department maintains the city water infrastructure to provide drinking water for home use and commercial use, and for fire protection. 

IMG_9659 - Copy Opens in new windowResidents and businesses use on average the full content of the large storage tank or 2.5 million gallons of water per day.

  • The City installs a lighted tree display each December on top of the large tank that is 135 feet tall and visible from Interstate 5.

  • The water division maintains 850 hydrants, 2400 control valves and 79 miles of water distribution pipe.

2023 Water Calendar

 Water Calendar 2023 Opens in new window

2022 Water Quality Report

2021 WATER CCR_Page_1

Where does your drinking water come from?

Drinking water in Mountlake Terrace comes from Spada Lake Reservoir, on the Sultan River about 30 miles east of Everett. This has served as a collection point for rain and snowmelt from the Cascade Range since the 1960s. 

The City of Everett manages water treatment and distribution from the lake to Alderwood Water District, which in turn supplies water to the City of Mountlake Terrace.

What does your water bill pay for?

The city's annual Water Quality Report explains how we provide safe, reliable water to our residents and businesses.

Your water bill pays for securing, treating and delivering water, as well as maintaining the system of drinking water plants, pipelines and pump stations.

Water Rate Study

In 2018, the city conducted a rate study for the water utility. The purpose of the study was to provide an updated rate forecast and long-term financial plan.

Find the Water Utility rate ordinance here.