Contact USD

Wastewater Treatment Plant and Administration Building
5072 Benson Road
P.O. Box 5050 94587-8550
Union City, CA 94587-2508
(510) 477-7500
(510) 477-7501 Fax

Normal Business Hours
8:00am-5:00pm
Monday-Friday

After hours/Emergency
(510) 477-7500, press extension 1

The District utilizes a voice mail system with an automated attendant. The following options are available:

• 0 Receptionist press at any time between 8 a.m. - 5 p.m. Monday through Friday
• 1 Overflowing manholes, sewer backups, odor complaints
• 3 Permits, inspections, fees
• 4 Job hotline
• 5 Project bid results
• 8 Directions
• 9 Employee directory (enter last name)

E-mail Union Sanitary District
ContactUSD@unionsanitary.com

The ContactUSD email is not for solicitation purposes (see how to do business with USD by clicking here).  If you request a response through the ContactUSD email, we will respond within 3 business days.  If you have an emergency or need immediate assistance, call us instead at (510) 477-7500. 

Current Job Openings
Please go to our Employment  page and scroll down to find job openings.

Driving Directions

Going south on Interstate 880: Exit at Whipple Road (before the large shopping center marquees). At the end of the ramp, continue straight through the intersection (west) on Whipple Road. Turn left on Union City Blvd. Turn right on Bettencourt Way and continue until it dead ends. Turn left on Whipple Road. Follow it around the curve and it turns into Benson Road. Continue straight into the visitor parking lot. ***************************************************** Going north on Interstate 880: Take Interstate 880 north to Union City. Exit at Alvarado Niles Road and go left at the end of the off-ramp (west). The road narrows down and turns into Smith Street. Turn right on Union City Blvd. Turn left on Bettencourt Way (first stoplight) and continue until it dead ends. Turn left on Whipple Road. Follow it around the curve and it turns into Benson Road. Continue straight into the visitor parking lot.