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• How to Reach Us
• Safety
• Consumer Confidence Report ( Water Quality Report )
• Backflow

*HOW TO REACH US*

Customer Service 8:00 a.m. to 5:00 p.m. weekdays 451-2480
Customer Service after hours or weekends 451-1616
Power outage reporting and information 451-1616
Hazardous situation 451-1616 or 911
TTD/TTY for speech/hearing-impaired 451-8828

Safety

OPU is committed to making our system safe and reliable for the good of customers and employees. Please report all Utility Safety Concerns to OPU at (507) 451-1616.

Backflow

Backflow is the term used when the water flows in the opposite direction from its normal flow. This can happen when the supply is somehow interrupted and pressure drops and in fact goes negative, drawing water back from the end user. This water could contain chemicals or be otherwise contaminated and end up contaminating the entire building, block, or City water system.

There are several assemblies, devices and methods to help prevent BACKFLOW:

	DEGREE OF HAZARD
Device, Assembly, or Method	Pollution (Low Hazard)		Contamination (High Hazard)
	Back Siphonage	Back Pressure	Back Siphonage	Back Pressure
Airgap	X		X
Atmospheric Vacuum Breaker	X		X
Double Check Valve Backflow Preventer	X	X
Reduced Pressure Principle Backflow Preventer	X	X	X	X

GOOD REMINDER: If you don't want to drink it, don't connect your water system to it!

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Please read the Owatonna Public Utilities (OPU) site terms of use (last modified 04/03/2000) before using this site. By using this site, you signify your consent to these terms. If you do not agree with the terms, please do not use this site. You may call (507) 451-2480 for terms clarifications or to request information.