NapaSan Construction Zones

NapaSan conducts a regular sewer system maintenance program. You may see us on the streets, repairing, replacing, or cleaning sewer lines or recycled water pipes. We apologize for any inconvenience and appreciate your patience while we work to keep our system operating effectively! 

Refer to the information below to find out where our current construction projects are happening. If you have any questions or concerns, please call NapaSan at (707) 258-6000. 

Browns Valley Trunk Sewer Project

Project Manager: Andrew Damron, adamron@napasan.com

Project Background: The Browns Valley Trunk Project is designed to intercept wastewater from Browns Valley and Southwest Napa and divert the flow away from sewer lines that are over capacity via a new 3-mile pipeline that will deliver the wastewater to NapaSan for treatment.  For additional background information, visit our Browns Valley Trunk Project page.   

Current Construction Location:  During the week of May 3, pipeline installation will continue along Browns Valley Road to Thompson Avenue.  

During the week of May 10, pipeline testing will occur on South Coombs Street, Spruce Street, South Jefferson Street, and Old Sonoma Road. Pipeline testing will also take place along First Street and Browns Valley Road.  Water line installation will occur at the Pump Station on S. Coombs Street north of Imola Avenue.


5.3.21 Browns Valley Trunk Sewer Project Construction Location Map


2021 Collection System Rehabilitation Project

Project Manager: Karl Ono, kono@napasan.com

Project Background: The 2021 Collection System Rehabilitation Project is essential to reduce the amount of maintenance calls, decrease the potential for sewer overflows in the project area,  and improve the operation of our sewer system. 

KJ Woods Construction, Inc. is expected to begin construction in March 2021, and work is planned to continue through October 2021. All work will be done in accordance with County and State public health guidelines related to the COVID-19 pandemic.

The project area was selected due to the deteriorated condition of aging sewer pipes. NapaSan will be repairing or replacing these aging sewer pipelines that allow stormwater and groundwater to infiltrate into the sewer system. Reducing this infiltration helps to decrease the possibility of sewer overflows and spills. Approximately 430 sewer laterals will be repaired or replaced as part of this project. Through this project, 4.2 miles of pipeline (approximately 1.6% of the total sewer system) will be rehabilitated or replaced. 

As always, NapaSan will work to minimize negative impacts to businesses and residents whenever possible throughout this project. Wherever possible, pipelines will be rehabilitated using trenchless methods, which minimize costs, construction time, and neighborhood disruptions compared to traditional open-cut trenching. 

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Current Construction Location: During the week of May 3, pipeline rehabilitation work will occur on Brown Street north of Lincoln Avenue and Central Avenue east of Brown Street. Manhole replacements will also be completed on Main Street between Pueblo Avenue and Lincoln Avenue.

During the week of May 10, pipeline rehabilitation work will occur on Brown Street north of Lincoln Avenue and George Street between Jefferson Street and Brown Street.  Manhole replacements will also be completed on Main Street and Adrian Street between Pueblo Avenue and Lincoln Avenue.

Map of 2021 Collection System Rehabilitation Project Area