Water Quality – Water Testing at Superior Water, Light & Power
Who We Are
Superior Water, Light & Power provides safe, reliable and high-quality electric, water and gas service to customers in the Superior area. We have been a part of the community for more than 125 years and take seriously our responsibility to provide these services that are essential to everyday life.
We provide water service to approximately 10,000 customers within the city of Superior and operate and maintain a freshwater treatment facility to serve our customers.
We must meet regulatory standards
The water we provide must meet all state and federal regulations, including the federal Safe Drinking Water Act, and we work closely with the Wisconsin Department of Natural Resources to monitor and ensure the safety and quality of SWL&P’s drinking water.
How water is supplied to customers
SWL&P pulls water from Lake Superior via wells located under 12 feet of sand on the bottom of Lake Superior near Minnesota Point. The water is pumped through a series of pipes to our water treatment plant, where it is filtered, treated and monitored before it is delivered to customers. It passes through several layers of filtration media at our treatment facility before being transported through distribution water mains and delivered to homes and businesses.
Our highly skilled employees, certified water plant operators by the DNR, monitor the water on an ongoing basis and detect any water quality concerns. Water samples are taken throughout our system daily for testing at our state-certified laboratory and other outside laboratories as required. At this time, no issues have been detected and regulators have not requested any additional testing.
Results of the tests we do as part of normal operations are available at the Wisconsin Department of Natural Resources website. The annual water quality report is available at www.swlp.com.
5/18/2018: Independent lab tests affirm safety of SWLP water
Annual Water Quality Report
- 2021 Annual Water Quality Report
- 2020 Annual Water Quality Report
- 2019 Annual Water Quality Report
- 2018 Annual Water Quality Report
- 2017 Annual Water Quality Report
- 2016 Annual Water Quality Report
- 2014 Annual Water Quality Report
- 2013 Annual Water Quality Report
- 2012 Annual Water Quality Report
- 2011 Annual Water Quality Report
- 2010 Annual Water Quality Report