Hydrant flushing will take place in six zones throughout American Canyon, beginning March 18, 2025. Service in each zone is expected to take 5-7 days to complete.
During flushing, residents and businesses may notice temporary water discoloration. To prevent stains on light-colored laundry, we recommend postponing laundry while flushing is actively occurring in your zone.
If you experience water discoloration:
Hydrant flushing is essential for maintaining water quality and system efficiency. Fire hydrants are opened to allow a high volume of water to flow through the mains, helping to remove particles and minerals that accumulate over time. Flushing also ensures proper water flow for fire protection.
For more information, contact Public Works at (707) 647-5325.
Schedule Order
Areas Included
Estimated Completion Dates
Zone 6
All properties located North of Airport Road, west of N. Kelly and S. Kelly Road
Completed
Zone 5
All properties within the Green Island Road industrial area; north of Eucalyptus Drive, west of SR 29, and south of Airport Road
Top of Zone 4
All properties located east of SR 29, including Main Street, Eucalyptus Drive, South of Napa Junction Road, including all businesses north of Holiday Inn Express and south of Tractor Supply
Zone 3
All properties located west of SR 29, north of American Canyon Road and south of Eucalyptus Drive
Zone 1
All properties located East of SR 29, north of city limits, south of American Canyon Road
Zone 2
All properties located west of SR 29, north of city limits, south of American Canyon Road
Remainder of Zone 4
All properties located east of SR 29, north of American Canyon Rd and south of Napa Junction Road
In Progress
Hydrant flushing is a routine maintenance activity that helps remove particles and minerals from the water mains. Over time these deposits can build up, which requires more chlorine to maintain safe drinking water, increases treatment costs and affects taste. Deposits can also react with chlorine, leading to unwanted byproducts. Flushing hydrants helps remove these accumulations and ensure better water quality from treatment plants to your tap.
Flushing occurs throughout the American Canyon Water Service Area in six zones. The process generally begins in the industrial area north of the city and moves south. A detailed schedule and zone map are available in the table above.
Hydrant flushing may cause temporary water discoloration in affected areas. This occurs due to accumulated particles and minerals being stirred up and discharged through the hydrants. While the water remains safe to use, residents should check water clarity before doing laundry, especially with white clothing. Discoloration typically clears within a few hours after flushing is completed.
No, this program is a necessary investment in water quality. The process uses roughly 0.74% of American Canyon's annual water supply, ensuring minimal impact while maintaining a clean and efficient water system.
Capturing high-velocity flushed water is not practical or cost-effective. While mobile treatment units exist, their high upfront costs make them an inefficient investment for this program.
No. Flushed water is dechlorinated before being discharged into storm drains that flow through our watershed to San Francisco Bay. These tablets are environmentally safe, though they may cause harmless bubbling, giving the water a soapy appearance.
For more information, please contact (707) 647-5325. Visit us in person at 4381 Broadway, Suite 201, Monday – Friday, 8:30 a.m. – 5 p.m. (excluding holidays).