Cross Connection Control
The DPW Water and Sewer Division is the entity charged with providing safe drinking water to Novi residents and businesses. State and Federal Laws (Safe Drinking Water Acts) require that the City of Novi protect water supply to the customer’s tap. The Plumbing Code, Michigan Residential Code, and the City of Novi Code of Ordinances also require that the City verify that cross connections on private plumbing systems do not pose a contamination risk to the public water supply through the enforcement of the Michigan Department of Environmental Quality (MDEQ) Law and Rules for Cross Connection Control.
As part of the cross connection control program, the Water and Sewer Division will be performing inspections of residential, commercial, and industrial cross connections to ensure that backflow prevention devices are in place, and present on the plumbing systems. This may include testable and non-testable devices. Testable devices must be tested.
Consumers also share in the responsibility for protecting the water supply by properly maintaining their plumbing systems in a safe condition.
Click here to review Commercial Cross Connection Control
Click here to review Residential Cross Connection Control
Commercial Information
Forms
Fire Sprinkler System Upgrade / Time Extension Request
Please complete the fillable form requesting a time extension for the required maintenance upgrade for your fire sprinkler system backflow prevention assembly. Once the fillable areas are completed, please print the request on your company letter head, sign and return an original copy to the Water & Sewer Division. The time extension request should be based upon a reasonable, realistic time period needed for corrective upgrade measures to your fire sprinkler system noting the urgency and importance of protecting the public drinking water supply and the process necessary to complete the corrective measures including your internal process.
Backflow Preventer Test Report
Attachment A - Fire Sprinkler System Backflow Prevention Corrective Options
Informational
Cross Connection Control Handbook
Contractor List for Cross Connection / Backflow Prevention
50 Cross Connection Questions, Answers & Illustrations
Stop Backflow News! Case Histories & Solutions
Cross Connection Control Manual
Residential Information
Forms
Backflow Preventer Test Report
Mandatory Residential Cross Connection Plumbing Inventory Worksheet - (Updated February 24, 2023)
(Instructions for Mandatory Residential Cross Connection Plumbing Inventory Worksheet)
Improper winterization of your backflow preventer = $$$
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Informational
How to properly winterize your lawn irrigation system
Winterizing Your Hose Bib Vacuum Breakers and Hose Connections
Handout Lawn Irrigation Cut and Cap
Is your laundry tub cross connected creating a cross contamination hazard?
Contractor List for Cross Connection / Backflow Prevention
Residential Cross Connection Control District Map
Cross Connection Control Handbook
FEBCO 765 Freeze Protection Guidelines
Picture Identifier / Residential Backflow Prevention Devices
Hose Bib Protection Identifier
50 Cross Connection Questions, Answers & Illustrations
Stop Backflow News! Case Histories & Solutions
Cross Connection Control Manual
Water Assisted Backup Sump Required Protection
Solar Water - Heating Systems
Bidets – Protective Requirements for Installation
Setting Up A Safe Toilet To Protect Against A Backflow Event
Pressure Vacuum Breaker
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The Pressure Vacuum Breaker (PVB) backflow preventer is on the right, above the red line. The Sprinkler head, circled in yellow, must be 12 inches below the red line |
The Pressure Vacuum Breaker (PVB) backflow preventer (white arrow). The Backflow Preventer, measured from the red line, must be 12 inches above the highest sprinkler head. In this picture, the backflow preventer must be raised or sprinkler heads must be lowered |
Cross Connection Videos
Introduction to Cross Connectors
Common Backflow Preventers in Your Home
Testing a Backflow Preventer
Lawn Irrigation
Winterization of Lawn Irrigation Backflow Preventers
Winterizing Your Hose Bib Vacuum Breakers and Hose Connections