Water System & Rates | Redmond Economic Development Inc.
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Sourced from seven deep wells, Redmond’s municipal water system supplies a minimum of 2.6 million gallons of domestic water daily (mgd) and has a peak usage of 14.8 mgd. Average daily summer use is 12.3 mgd. The system’s current maximum capacity is 18 mgd resulting in an excess capacity of 3.2 mgd. The current storage capacity is 13.5 million gallons. There are 11,800 water service connections, of which 80% are domestic households. Monthly rates include a fixed charge based on meter size plus a volume charge that is applied to usage in hundred cubic feet (ccf).

Water Rates (by meter size)


Monthly Fixed Rate

Rate (/ccf)










1 1/2”















Source: City of Redmond July 1, 2019

Sewer Rates

Redmond's municipal wastewater system conveys and treats an average of 1.8 million gallons per day (mgd) of domestic, commercial, and industrial wastewater.  The city’s modern treatment plant is designed for an average daily flow of 3.0 mgd, resulting in excess capacity of 1.2 mgd. Further, the City of Redmond has the ability to add additional capacity within the existing treatment plant should a project warrant it.

Commercial and industrial accounts pay a base fee of 31.63 per month for the first 700 cubic feet (cf) of water used, plus a volume charge based on the strength of wastewater discharged for water use exceeding 700 cf. The volume charge is calculated using an average of winter months’ (December- April) water use.

Storm Water Rates

Redmond’s Storm Water Program provides for the management of both the quantity and quality of storm water runoff from public facilities in order to prevent local flooding and protect the quality of groundwater supplies. This is accomplished through the operation and maintenance of 1,960 drywells and drill holes, 4,100 catch basins, 38 miles of pipe, and street sweeping 321 lane miles of city streets.  Water quality sampling and reporting is also performed to maintain compliance with state and federal regulatory requirements.                                               

Commercial and industrial accounts pay a base fee per month plus a variable fee based on the average number of daily vehicle trips generated by the site.  The daily trips are calculated using the Institute of Transportation Engineers Trip Generation Manual.

 Storm Water Rates

Base Rate

Variable Rate


$0.06/daily trip end

Source: City of Redmond; rates as of July 1, 2019