The Town of Oliver operates an extensive rural and municipal water system serving domestic water to approximately 2,393 residential customers, 174 industrial/commercial customers and irrigation water to 601 agriculture connections which equates to irrigating over 5,200 acres of farm land and 455 acres of non-farm land.
Water is supplied from a combination of underground and surface sources and varies with demand during different seasons.
The Water Utility is operated as a single, self-sufficient entity. Although the rural and municipal water systems do run somewhat independently, their costs and expenses are pooled in a single fund. Major past projects, mostly related to the irrigation supply system, have been jointly shared by all water users. The Water Fund has used a combination of reserves and grant money for upgrades and improvements to the water system. A majority of the spending started taking place from the first Twinning (PH 1) project which started in 2007.