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Office Hours
7:30 am - 4:30pm
Friday: 7:30 am - 3:30 pm
Sat & Sun: closed

For After Hours Payments,
Please Use The Payment Slot Located In The
West Door Of
The Business Office

Street Address
907 First Street
Princeton, MN 55371

Mailing Address
PO Box 218
Princeton, MN 55371

Phone: 763.389.2252

Emergency/Outage After Hours Phone: 612.390.4361

Emergency/Water After Hours Phone: 612.715.8703

For Disconnected Electric/Water Service After Hours Phone: 612.390.6787

For other Non Emergency situations Mille Lacs County Sheriff:1-888-860-8250

If digging in MN, call Gopher State One Call 48 hours before you dig. 811 or log on to: Please contact a licensed electrician to locate your secondary wires.

Application for Billing Services (download)
- Renter -
- Owner -

Application for Electric Construction Service

Automatic Payment Plan

Third Party Program

2020 Fee Schedule

Service Line Protection Beginning January 2018

What is an unused well?
And why is it important to seal?

- by Traut Wells

Sealing the unused Municipal Well


Sealing the Test Well


A well that is not in use - sometimes referred to an "abandoned" well - can be a potential threat to health, safety, and the environment. Wells that are no longer used may be buried or forgotten.

Unused wells that have not been properly sealed can be a source of groundwater contamination, potentially affecting nearby drinking water wells. They may threaten the quality of the water in city wells or your own well. Groundwater is the main source of drinking in Minnesota. Protecting groundwater is everybody's business.

As a well ages, the casing may rust, joints may leak, the pump may become stuck in the well, or the well may fill with debris. If the well is covered with boards or concrete, the cover will eventually decay and break open. Surface water runoff, debris, and other contaminants can then enter the well.
Groundwater is found in underground geologic formations called aquifers. The layers of rock and soil that lie between an aquifer and the surface, or between aquifers, typically act as natural barriers against the spread of contamination.

However, an unused, unsealed well can provide an open channel between the surface and an aquifer - or between a shallow aquifer and a deeper aquifer. An unused well can act as a drain - allowing surface water runoff, contaminated water, or improperly disposed waste to reach an uncontaminated aquifer.

Sealing is the process of clearing an unused well of debris and filling the well with a special material called grout. The sealing must be done by a licensed contractor.

Well Management - Well Sealing

YouTube Video - Protect Our Precious Water: "Sealing Your Unused Well"

Visit our Licensed/Registered Well Contractor Directory to find a currently licensed/registered well contractor who can seal your old well.

Princeton Public Utilities – Actively protecting your source of drinking water!

The City of Princeton is proactively taking steps to protect the city’s drinking water supply. Princeton Public Utility staff regularly test the water to make sure it is contaminant free for you and your family. However – that is only part of the story. Working with County and City land use planners, Soil & Water Conservation District, Minnesota Department of Health, Minnesota Rural Water Association, Township officials, businesses and citizens the City has developed a “Wellhead Protection (WHP) Plan” that describes the source of our groundwater supply and steps we can take to protect it! Groundwater is part of the hydrologic cycle and can be impacted by human land use activities.

What Is Wellhead Protection?

Wellhead Protection is a way to prevent drinking water from becoming polluted by managing potential sources of contamination in the area which supplies water to a public well. Much can be done to prevent pollution, such as the wise use of land and chemicals. Public health is protected and expense of treating polluted water or drilling new wells is avoided though wellhead protection efforts.

Why Do We Need to Protect It?
Contamination of drinking water has severe consequences as water is a limited resource and even more important a facet to humans as it is an everyday necessity. The water we have now will be the water we have 100+ years from now and forever.

Wellhead Protection News Release:

Princeton Public Utilities recently received approval of their Wellhead Protection Plan from the Minnesota Department of Health. The goal of Wellhead Protection is to prevent drinking water from becoming polluted by managing possible sources of contamination in the area which supplies water to the municipal wells. Utility staff worked closely with the Minnesota Department of Health in identifying the recharge area of the municipal wells based on geology of the area, groundwater flow and volume of water pumped. This information resulted in a map being developed that identifies the recharge area of the city wells.

“Wellhead Protection is all about creating awareness about where our drinking water comes from and things landowners and the public can do to help protect our groundwater resources” stated Connie Wangen, Wellhead Protection Manager for Princeton Public Utilities. The Utility will be doing a variety of on-going education and outreach efforts in the community as part of implementing the Wellhead Protection Plan.

One of the goals identified in the Wellhead Protection Plan is to promote land use practices that will help protect the aquifer used by the municipal wells. Utility and local resource staff are working together to help protect the area’s water supply and request your support of these efforts. If you would like more information about wellhead protection, please contact Connie or Scott at 763-389-2252.

RPZ Testing & Wellhead Protection
The Minnesota Department of Health is requiring water suppliers to inventory
and ensure that backflow prevention devices/ RPZs have been tested and rebuilt as required. Backflow prevention must be used at locations with 1"+ water
lines, boilers, car washes, chemical lines and tanks, chillers, dental units, greenhouses, mortuaries, private non-potable water supplies, truck fill, or any place water administration sees fit to ensure water safety.
- RPZs must be inspected annually by a certified inspector.
- Every 5 years, the RPZ must be overhauled by a licensed plumber.
- Verification of inspections and RPZ overhauls must be given to PPUC
If you feel that you may be in need of an RPZ or have questions about
them, please contact the PPUC Water Department.


* RPZ Enforcement MN Plumbing Code Section 4715.2161

What is Wellhead Protection? (pdf)
RPZ Testing & Wellhead Protection (pdf)

- Wellhead Protection Plan (pdf)
- City of Princeton, MN - Ordinance No. 695

Where does your drinking water come from? (pdf)

Drinking Water Reports (pdf's)












Princeton Drinking Water Supply Management Area (DWSMA)

- Princeton North DWSMA

- Princeton South DWSMA