Castro Valley is in the Alameda Countywide Clean Water Program (ACCWP) NPDES permit area. Only rain goes in the storm drain - no washing pollutants, sediment, soaps, or yard waste into gutters.
The Alameda Countywide Clean Water Program holds an NPDES permit covering Castro Valley storm drains. Prohibited discharges include any non-rainwater except specific allowed flows (irrigation overflow, fire flushing, dechlorinated pool water in some cases). Common violations: washing concrete trucks or paint brushes into gutters, dumping motor oil, sweeping yard debris into streets, hosing parking lots into drains. Construction projects 1+ acre need a SWPPP under the state Construction General Permit; smaller projects need basic BMPs. Castro Valley discharges flow to San Lorenzo Creek and the Bay.
Illicit discharge: state fines up to $25,000/day under Cal. Water Code; county administrative penalties $200-$1,000. Mandatory cleanup at responsible party expense.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Castro Valley, CA
Alameda County Code §6.60.050 prohibits repairing, rebuilding, modifying or testing vehicles in residential areas between 7 p.m. and 7 a.m. if it produces so...
Castro Valley, CA
Alameda County §6.60.050 makes amplified sound from any radio, stereo, instrument or device a violation at any time of day if plainly audible 50 feet from th...
Castro Valley, CA
Alameda County Code §6.60.050 limits use of electric or gas leaf blowers, sweepers, vacuums, mowers, trimmers, edgers and hedgers in residential areas to 7 a...
Castro Valley, CA
Alameda County Code §5.08.060 makes it unlawful for any person owning, keeping, or having custody of a dog or other animal to knowingly permit or suffer that...
Castro Valley, CA
Alameda County Code §6.60.080 exempts construction activity from Chapter 6.60 only if it occurs between 7 a.m.-7 p.m. on weekdays and 8 a.m.-5 p.m. on Saturd...
Castro Valley, CA
Alameda County NPO §6.65.030 prohibits parking or storing vehicles on lawns or unimproved surfaces of residential property. Vehicles must be on paved concret...
Side-by-side rule comparisons with other cities in Alameda County.
See how other cities in Alameda County handle stormwater management.
See how Castro Valley's stormwater management rules stack up against other locations.
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