Fluoridated Area Maps

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The City of Hillsboro Water Department does not add fluoride to the drinking water. However, Hillsboro Water Department customers living in the South Hillsboro Butternut Creek neighborhood will temporarily be served fluoridated water from the Tualatin Valley Water District while construction is completed on the Hillsboro Water Department’s water pipeline in South Hillsboro.

City of Hillsboro Fluoridated and Nonfluoridated Water Service Area
(Click on Map for Zoomable PDF)

  • The blue area is served non-fluoridated water by the Hillsboro Water Department.
  • The orange area (South Hillsboro Butternut Creek neighborhood) will temporarily be served fluoridated water from the Tualatin Valley Water District (TVWD). 
  • The tan area is served fluoridated water by the Tualatin Valley Water District.

City of Hillsboro Fluoridation Map. For accessibility assistance or questions, call the Water Department at 503-615-6702.

 
City of Hillsboro Western Washington County Nonfluoridated Water Service Area
(Click on Map for Zoomable PDF)

  • The blue area shows the area in rural Washington County served non-fluoridated water by the Hillsboro Water Department. 

Country Customers Fluoridation Map. For accessibility assistance or questions, call the Water Department at 503-615-6702. 

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