• Sun Prairie Utilities is a Reliable Public Power Provider.

    SPU recently received a Reliable Public Power Provider Diamond-level designation - ranking us in the upper 6%! Click the image to read more >>

  • Sun Prairie Utilities partners with HydroCorp.

    SPU has partnered with HydroCorp to help with cross connection inspections, which are through the Cross Connection Program required by the WI DNR.

  • Image of Sun Prairie Utilities Welcome Packet.

    We created a packet to help customers find useful information about the utility in one document. Check it out >>

  • Don’t worry! Crews are out flushing hydrants, which clears iron and other mineral deposits out of water mains. Learn more here >>

  • Plans are underway to build a new facility to help us serve the growing community! View the latest >>


As a way to maintain a safe and dependable drinking water supply, Sun Prairie Utilities (SPU) practices cross connection investigation and solutions. These inspections are through the...


You may see our crews flushing hydrants in Sun Prairie. Your water’s color and pressure could be impacted. 

Please update your email address. We are...


Everyone needs help sometimes, especially when the cost of living increases. Sun Prairie Utilities has compiled a list of resources you can use to help meet the cost of your utility bills.