Castro Valley Sanitary District offices are located at 21040 Marshall Street, Castro Valley, CA 94546.

The nearest cross-street is Castro Valley Blvd. We are located in Castro Valley next to Rite Aid, and are open Monday-Friday 7:00 am-4:00 pm.

Driving

From South Bay:

I-880 N toward OAKLAND.

Merge onto I-238 S toward I-580/CASTRO VALLEY/STOCKTON.
I-238 S becomes I-580 E.

Take the GROVE WAY exit toward CROW CANYON RD.
Turn Left onto GROVE WAY
Turn Left onto CASTRO VALLEY BLVD.
Turn RIGHT onto MARSHALL ST.
End at 21040 Marshall St., Castro Valley, CA 94546
                                                                                               
From East Bay:
I-680 S toward SAN JOSE
Merge onto I-580 W toward OAKLAND
Take the exit toward CASTRO VALLEY
Turn LEFT onto E CASTRO VALLEY BLVD.
Turn RIGHT onto MARSHALL ST.
End at 21040 Marshall St., Castro Valley, CA 94546

From San Francisco:

I-80 E toward OAKLAND.
Merge onto I-580 E toward DOWNTOWN OAKLAND/HAYWARD-STOCKTON
Take the GROVE WAY exit toward CROW CANYON RD.
Turn LEFT onto GROVE WAY
Turn LEFT onto CASTRO VALLEY BLVD.
Turn RIGHT onto MARSHALL ST.

End at 21040 Marshall Street, Castro Valley, CA 94546.

From San Ramon/Crow Canyon Road:

CROW CANYON RD. towards CASTRO VALLEY.

Turn RIGHT onto CASTRO VALLEY BLVD.

Turn RIGHT onto MARSHALL ST.

End at 21040 Marshall Street, Castro Valley, CA 94546.

BART

From San Francisco

Board DUBLIN/PLEASANTON bound train
Exit at CASTO VALLEY station

Walking from CV Bart Station

Go NORTHEAST on NORBRIDGE AVE toward REDWOOD RD.

Turn RIGHT onto CASTRO VALLEY BLVD

Turn LEFT onto MARSHALL ST

From Concord

Board SAN FRANCISCO INT’L AIRPORT bound train
Transfer at MACARTHUR station

Board FREMONT bound train

Transfer at BAY FAIR station

Board DUBLIN/PLEASANTON bound train

Exit at CASTRO VALLEY station

Walking from CV Bart Station

Go NORTHEAST on NORBRIDGE AVE toward REDWOOD RD.

Turn RIGHT onto CASTRO VALLEY BLVD

Turn LEFT onto MARSHALL ST

From Richmond/Berkeley

Board FREMONT bound train

Transfer at BAY FAIR station
Board DUBLIN/PLEASANTON bound train

Exit at CASTRO VALLEY station

Walking from CV Bart Station
Go NORTHEAST on NORBRIDGE AVE toward REDWOOD RD.

Turn RIGHT onto CASTRO VALLEY BLVD

Turn LEFT onto MARSHALL ST