Welcome to SMWSA

When South Metro Water Supply Authority (SMWSA) was founded in 2004, the idea behind it was simple: bring many smaller water entities in south Denver together to create a regional water authority. SMWSA stemmed from the Douglas County Water Resource Authority (DCWRA), which started in 1992, and the South Metro Water Supply Study Board, formed in January 2000, when other larger water providers requested to work with one regional entity.

We live in a semi-arid region with an average rainfall of less than 20 inches. Water, its uses, flow, quality, ownership, storage and accessibility are what we think about most of the time. A big part of water management is water conservation and all of our members have conservation plans.

By taking a unified approach to regional water rights and allocation, SMWSA better serves constituents through its increased negotiating power and support on structural and non-structural projects. Together, our 14 members represent about half of Douglas County and 10 percent of Arapahoe County (based on land area). Our size gives us clout and we are using our bargaining power to accomplish our goal of securing water rights, building infrastructure, and transporting and storing water for the benefit of our customers.



Visit SMWSA Member Web Sites


Arapahoe County Water and Wastewater Authority


Castle Pines Metropolitan District


Castle Pines North Metropolitan District


Centennial Water & Sanitation District


Cottonwood Water and Sanitation District


Dominion Water & Sanitation District


East Cherry Creek Valley Water & Sanitation District


Inverness Water & Sanitation District


Meridian Metropolitan District


Parker Water & Sanitation District


Pinery Water & Wastewater District


Rangeview Metropolitan District


Stonegate Village Metropolitan District


Town of Castle Rock





We need your help! The South Platte Basin is currently developing a water plan that will be included in Colorado’s Water Plan.  Your input is vital for the needs of the South Platte to be addressed.


Learn more and provide your input at:


In the coming decades, Colorado is anticipated to have a water shortage that will make it difficult to meet the needs of the growing population while also maintaining the needs of agricultural production, sustainable ecosystems and nationally recognized recreational activities. To this end, Governor Hickenlooper issued an executive order in May 2013 for the creation of Colorado’s Water Plan.  Each of Colorado’s eight river basins are currently working on their Basin Implementation Plan to identify water supply needs over the coming decades and how these demands will be met.