Fast Fact

WaterOne is led by a Board of Directors, elected at-large by our customers. 

Preventing Backflow (Cross Connection Control)


Under normal conditions, after fresh treated water leaves our treatment plants it completes its journey to your tap, traveling through our distribution system and your plumbing system. Water quality is preserved from treatment to tap as long as the water maintains its forward pressure. However, certain hydraulic situations may cause the reversal of the flow from your plumbing system into our distribution system. This is called backflow and it's important to prevent it.

We prevent backflow by controlling cross connections. A cross connection is any actual or potential connection between a public or a consumer's potable water system, and any other non-potable liquid or gas.

If backflow occurs and these cross connections are not properly protected, they could contaminate the drinking water flowing in the distribution system. In adherence to Kansas regulation and WaterOne’s operating policies, we protect the distribution system from backflow contamination from cross connections. 

We require affected customers to:  

  1. Install containment assemblies (also known as backflow prevention assemblies, containment devices or backflow prevention devices) on water service to:
    • Commercial property
    • Dedicated irrigation lines
    • Fire lines
    • Multi-Family Residential Units
    • Single-Family Residential Units with a Dual Water Supply Agreement        
    • Other uses as determined by WaterOne
  2. Install isolation protection as required by the Plumbing Code and WaterOne for protection of the customer's plumbing system
  3. Test containment and isolation backflow preventer assemblies using a certified tester:     
    • After initial installation
    • Annually thereafter
  4. Submit completed test reports to WaterOne

Staff reviews plumbing plans for the protection of the distribution system and the customer's plumbing system.

It is at the sole discretion of WaterOne’s staff to suspend water service if the premises poses a health risk to the public water supply. 

Test reports may be e-mailed (preferred) or faxed to Cross-Connection Control:

Fax:    913/895-1822

Mailing Address:
Attn: Cross-Connection Control
10747 Renner Blvd.
Lenexa, KS 66219

To learn more, contact Cross-Connection Control at 913/895-1815. 




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