Pay Your Bill Online The Northern Colorado Water Association is proud to partner with Xpress Bill Pay to provide online bill payment. 1) Click below to download instructions for using Xpress Bill Pay Xpress Bill Pay Instructions 2) Click below to go to Xpress Bill Pay’s website Xpress Bill Pay Website Pay Your Bill by Check Send a check to: Northern Colorado Water AssociationP.O. Box 415Wellington, Colorado 80549 or Bring us a check at: Northern Colorado Water Association4389 E. County Road 70Wellington, Colorado 80549 **Please note that our business hours are from 8:00 AM to 4:00 PM, Monday through Friday