July 25, 2018

New Aquifer Storage and Recovery Well Serving Central Iowa Customers

Des Moines Water Works has utilized aquifer storage and recovery (ASR) wells as sources of water since late 1990s. These wells are installed deep into the Cambrian-Ordovcian Aquifer, also referred to as the Jordan Aquifer, and are used to store drinking water that is needed when water demand is high. When water demand is low, mainly during winter months, drinking water is injected into the wells which displaces the native Jordan Aquifer water. Up to 450 million gallons can be stored in an ASR well during the winter months when Des Moines Water Works has excess water treatment capacity. In summer months, during higher water demand, the drinking water is pumped out of the ASR well and into the water distribution system for use by customers.

West Des Moines Water Works, a wholesale customer of Des Moines Water Works, needed to purchase additional water from Des Moines Water Work to meet the needs of Microsoft Corporation. To meet the water demand requirements of Microsoft, West Des Moines Water Works, City of West Des Moines and Des Moines Water Works entered into a Chapter 28E Agreement to construct a new ASR Well facility. The Army Post Road ASR Well facility will be placed in service this summer and will provide an additional 3 million gallons of water per day to help serve Microsoft and other Des Moines Water Works’ customers.

The total cost of this project is $6.1 million. The City of West Des Moines and the West Des Moines Water Works paid $4.655 million of the cost while the Des Moines Water Works paid $1.4 million dollars. The Des Moines Water Works also provided the 5.28 acre site for the Army Post Road ASR Well facility along with the engineering design and construction management for the project.

Posted by: Laura Sarcone No Comments
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