The City of Wixom is required to have a Cross Connect Control Program to protect our water supply.  HydroCorp administers this program for The City of Wixom. Residents that have received a notice from HydroCorp should proceed with backflow prevention testing and report their results to HydroCorp.  If you have questions about the mailing, you can call HydroCorp at 844-493-7641 or visit www.watercustomer.com.  You can also contact the Wixom DPW at 248-624-0141 if you experience any difficulties with reaching HydroCorp. Please note the deadline for compliance with the notice has been extended to July 31, 2026.

For Residential Frequently Asked Questions regarding Cross Connection Control and Back Flow Prevention
CLICK HERE 

For a List of Certified Testers
CLICK HERE 

For Oakland County's List of Certified Testers
CLICK HERE 

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Did you know that your tap water (drinking water) has to meet standards that exceed those for bottled water?  You don’t need to buy bottled water for safety reasons in the City of Wixom because our tap water exceeds federal state drinking water standards. 

The Safe Drinking Water Act was established to protect human health from contaminants in drinking water and to prevent contamination of existing groundwater supplies.  This act requires many actions to protect drinking water and its sources.  One of these actions is the installation and maintenance of an approved backflow prevention assembly at the water service connection.  Without proper protection devices, cross connection can occur.

What is a cross connection?  A connection between your drinking water and another source of water that combines the two when a backflow condition occurs.  When this occurs, your drinking water can become contaminated.

What is backflow?  Backflow is when the water in your pipes (the pipes after the water meter) goes backward (the opposite direction from its normal flow).  There are two situations that can cause the water to go backward (backflow):

• Backpressure – pressure in your pipes is greater than the pressure coming in
• Backsiphonage – a negative pressure in one of the pipes.

What hazards are threats?  Backflows due to cross connections can cause sickness and death.  Even in your own home, you can unwittingly create a cross connection:

• Putting the garden hose in a swimming pool to fill it
• Putting the garden hose down the drain to flush out debris when it’s backed up
• Connecting your garden hose to a plant fertilizer or bug spray unit
• Lawn irrigation systems

What can be done?  The installation of a hose bib (faucet) vacuum breaker can prevent backsiphonage of contaminants and provide adequate protection of the homeowner’s water system and consequently the utility’s water system.  In other instances more elaborate protective devices may be necessary.  For those situations, assistance in determining what device is appropriate may be needed.