Cross Connection Program

The City of Dayton requires all water customers with potential cross connection hazards to install a backflow device and maintain that device to Dayton Municipal Code standards.  Failure to comply with all the requirements of Chapter 8.3 of the Dayton Municipal Code could result in termination of your water service.

The Most Commonly Used  items resulting in Potential Water Contamination are:

  • Sprinkler Systems
  • Drip Irrigation Systems
  • Hot Tubs
  • Swimming Pools
  • Greenhouses
  • Well Pumps from an Additional Source
  • Anitfreeze Flush Kits
  • Insecticide Sprayers that attach to a Garden Hose
  • Water Softener Treatment Systems
  • Fill Adapters for Waterbeds and Fish Tanks
  • Portable Dialysis Machines
  • Livestock (Horses, Cows, Chickens, Goats, etc.)

For more information regarding Backflow Devices and Cross Connection Prevention, contact the City of Dayton at (503) 864-2221 or stop by City Hall at 416 Ferry Street, Dayton Oregon.


Cross Connection:  Any unprotected actual or potential connection or structural arrangement between a public or a consumer's potable water system and any other source or system through which it is possible to introduce in to any part of the potable system any used water, industrial fluid, gas, or substance other than the intended potable water with which the system is supplied.

Backflow:  The undesirable reversal of water or mixture of water and other liquids, gases or other substances into the distribution pipes of the potable supply of water.

Potable Water Supply:  Any system of water supply intended or used for human consumption or other domestic use.

Contamination:  The entry into or presence in a public water supply system of any substance which may be deleterious to health and or quality of the water.