Water Division

A group of unregulated chemicals called perfluoroalkyl substances (PFASs), which are sometimes found in drinking water, have been in the news a lot lately. This is your place for information regarding these substances and how the City of Sioux Falls works to keep your drinking water safe.

Frequently Asked Questions

A 40 hour Backflow Prevention Assembly Tester Training course will be held at the City of Sioux Falls Utility Billing Office on October 24th thru 28th, 2016.  The training will be followed by an ABPA exam at the same facility on October 29th, 2016.

Backflow Prevention Assembly Tester Certification Training

Stay up-to-date on current progress of hydrant flushing in the City of Sioux Falls by checking out this interactive map.  More information in Division Resources below.

2017 Spring Hydrant Flushing Program
Hydrant Flushing Map

The City of Sioux Falls’ lawn watering program has three stages that take into account water available in the Big Sioux River, the Big Sioux Aquifer, and through the Lewis & Clark Regional Water System. It also uses the daily demand for water to determine how and when we change between stages of conservation.

Lawn Watering Schedules Summary

The Water Purification Plant gives tours to interested customers and groups.  If you would like to take a tour of the Water Plant, please click on the link below and fill out the form.  Someone from the Water Division will contact you within 3 working days to confirm the tour date and time.

Water Plant Tours

Did you know; the Trident T-10 water meter located in your home or business can help determine if water is being wasted due to leaks.

Determine if Water is Being Wasted