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Monday - Thursday: 8:00 a.m. to 4:30 p.m.

Friday: 8:30 a.m. to 4:30 p.m.

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Phone: 763.441.2020

Fax: 763.441.8099

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P.O. Box 430

Elk River, MN 55330-0430

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13069 Orono Parkway

Elk River, MN 55330-0430

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1705 Main Street

Elk River, MN 55330-0430

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Wiring Diagrams for Meter Installations

The ERMU Wiring Diagram can be a useful tool when working on meter installation. If you have questions about the electric vehicle (EV), residential solar, or ground source heat pump wiring diagram, please contact one of our Meter Technicians at 763.441.2020.

View and Download the Wiring Diagrams for Meter Installations

EV Charger Metering
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Stay Up to Date on All the Latest News with Our Blog

Utility Equipment: Who Owns What?

November 6, 2025

Have you ever wondered who owns what when it comes to your residential or commercial electric and water utility equipment? It is important to know which is utility owned vs. customer owned for proper maintenance and repair. Simply click on the links below to learn more or contact ERMU’s customer service team at 763.441.2020 if you have additional questions. Printable Residential Infrastructure Flyer Printable Commercial Infrastructure Flyer

A utility worker trims a tree branch near power lines from a bucket lift on a clear, sunny day.

Tree Trimming in Otsego and Dayton

By Jenny Foss • October 24, 2025

Elk River Municipal Utilities will be contracting with Carr’s Tree Service to perform tree trimming in the Otsego area beginning November 3 and Dayton area mid-November. This work is part of our ongoing effort to maintain safe and reliable electric service by keeping trees and vegetation clear of power lines. Maps of the planned tree trimming areas are linked below.

ERMU Ensures Safe Water with PFAS Testing

July 30, 2025

Elk River Municipal Utilities (ERMU) strives to provide quality and cost-effective utility services to its customers. As a part of that mission, ERMU routinely tests for per- and polyfluoroalkyl substances (PFAS). ERMU has conducted PFAS testing in cooperation with the Minnesota Department of Health (MDH) in 2021 and 2025. We are pleased to report that all results showed no detection above MDH guidance levels. Monitoring and Testing Proactive testing protects the health of public water system customers and is the first step to reducing risk from PFAS exposure. As part of its mission, ERMU upholds standards with routine testing of our water quality to ensure services reflect the excellence, dependability, and expertise on which our customers rely. The Minnesota Department of Health has been investigating the impacts of PFAS on groundwater since 2002 and conducts tests of community water systems. In 2021, the MDH began its Statewide PFAS Monitoring Project to evaluate whether PFAS levels across the state exceeded health guidelines. ERMU volunteered to participate in MDH’s 2021 PFAS testing. All sample results showed no detection above MDH guidance levels. In 2025, the MDH conducted another round of statewide PFAS sampling. Once again, all ERMU sample results showed no detection above guidance levels. According to the Minnesota Department of Health, a person who drinks water that is at or below the guidance levels would experience little or no risk for health effects. ERMU will continue to work with MDH to monitor and report PFAS levels in the system as we remain committed to the health and safety of our community. Contact us to learn more about PFAS or our high-quality water standards. Additional Resources Elk River Municipal Utilities Water Quality Reports Minnesota Department of Health - PFAS Information Centers for Disease Control and Prevention | Agency for Toxic Substances and Disease Registry (ATSDR)

13069 Orono Parkway
P.O. Box 430
Elk River, MN 55330-0430

Phone: 763.441.2020
Fax: 763.441.8099

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