California / Reports / 2026 /
California sewage discharges, September 2026
85 records of sewage discharges and water advisories in California dated in September 2026, newest first. Each record keeps the source's own times and wording.
Source: the agencies, sewer operators and EPA records named on each row and on the Sources page. Updated 2026-11-06 09:03 UTC.
Sanitary sewer overflow (SSO): sewage spills from a sewer meant to carry sewage separately from rainwater. Cyanobacteria (harmful blue-green algae) can make water unfit for contact; the issuing authority decides when its advisory ends.
| When | Report | Status |
|---|---|---|
| to 8:56 PM PDT | Central Contra Costa Sanitary District · [house number removed] Oak Knoll Loop Walnut Creek · SSO · 198 gallons report · notice · map | ended |
| to 2:08 PM PDT | Los Angeles County Public Works (Consolidated Sewer Maintenance District) · 1123 - [house number removed] De Ville Way, Malibu, CA 90265 · SSO · 3,000 gallons report · notice · map | ended |
| to 4:02 PM PDT | City of San Jose Environmental Services · Blossom Hill Rd and Camden Ave San Jose CA 95124 · SSO · 202 gallons report · notice · map | ended |
| to 1:46 PM PDT | City of Chino · 10th Street between Washington Ave and Park Place, Chino, Ca · SSO · 2,625 gallons report · notice · map | ended |
| to 1:25 PM PDT | Los Angeles County Public Works (Consolidated Sewer Maintenance District) · Ballona Creek · 1534-0101 (S Sherbourne Dr and W Slauson Ave, Unincorporated Los Angeles, CA) · SSO · 500 gallons report · notice · map | ended |
| to 7:15 PM PDT | City of Los Angeles LA Sanitation and Environment (Bureau of Sanitation) · [house number removed] South Mariposa Avenue · SSO · 829 gallons report · notice · map | ended |
| to 11:00 AM PDT | City of San Mateo · [house number removed] parrot dr · SSO · 1,075 gallons report · notice · map | ended |
| to 12:00 PM PDT | National City · [house number removed] Highland · SSO · 125 gallons report · notice · map | ended |
| to 10:19 AM PDT | City of Glendale · Los Angeles River · [house number removed] Columbia Dr. Glendale Ca. · SSO · 763 gallons report · notice · map | ended |
| to 9:30 AM PDT | UC Los Angeles · Evergreen Residential Building Room 105 · SSO · 75 gallons report · notice · map | ended |
| to 3:58 PM PDT | Central Contra Costa Sanitary District · [house number removed] Escobar St. Martinez · SSO · 196 gallons report · notice · map | ended |
| to 8:25 PM PDT | City of Sebastopol · [house number removed] Washington Ave, Sebastopol · SSO · 66 gallons report · notice · map | ended |
| to 10:25 AM PDT | City of Los Angeles LA Sanitation and Environment (Bureau of Sanitation) · [house number removed] North Fredonia Drive · SSO · 309 gallons report · notice · map | ended |
| to 10:45 PM PDT | Los Angeles County Sanitation Districts · Trunk A Sewer, MH 14 0080 (District 14) · SSO · 80 gallons report · notice · map | ended |
| to 11:00 PM PDT | City of West Hollywood · “Ballona Creek, and Santa Monica Bay” · 1583-0100 ([house number removed] Santa Monica Blvd, West Hollywood, CA 90046) · SSO · 1,550 gallons report · notice · map | ended |
| to 1:37 PM PDT | City of Oakland Public Works · Sausal Creek · [house number removed] Saroni Drive, Oakland Ca · SSO · 485 gallons report · notice · map | ended |
| to 8:04 AM PDT | US Marine Corps Base Camp Pendleton · [house number removed] Old Hwy 1 Force Main · SSO · 960 gallons report · notice · map | ended |
| California State Water Resources Control Board (FHAB program) · South Fork Eel River · Standish-Hickey · Algae advisory · volume not reported report · notice · map | listed | |
| to Sep 24, 7:00 AM PDT | City of Hermosa Beach · [house number removed] Pacific Coast Highway · SSO · 400 gallons report · notice · map | ended |
| to 10:05 AM PDT | City of La Mesa · [house number removed] Maryland Ave · SSO · 85 gallons report · notice · map | ended |
| California State Water Resources Control Board (FHAB program) · Magnolia Creek · lake-wide · Algae advisory · volume not reported report · notice · map | listed | |
| to 6:35 PM PDT | City of San Jose Environmental Services · [house number removed] Bobbie Ave, San Jose, CA 95130 · SSO · 8,396 gallons report · notice · map | ended |
| to 1:30 PM PDT | UC Santa Cruz · Oakes College Dorm 4, SSMH87-1-2 · SSO · 100 gallons report · notice · map | ended |
| to 2:05 PM PDT | Sacramento Area Sewer District · Arcade Creek · 388707 · SSO · 223 gallons report · notice · map | ended |
| to Sep 21, 9:00 AM PDT | City of Santa Monica · [house number removed] Michigan Ave · SSO · 479 gallons report · notice · map | ended |
| to 7:30 PM PDT | Sonoma County Water Agency (SCWA) · “Fryer Creek” · [house number removed] 5th St. West (MH136-119) · SSO · 2,790 gallons report · notice · map | ended |
| to 11:40 PM PDT | City of Rio Vista · Sacramento River · River Rd. Lift Station · SSO · 4,000 gallons report · notice · map | ended |
| to 10:29 AM PDT | North San Mateo County Sanitation District · [house number removed] Southgate at rear of building in the alley way · SSO · 159 gallons report · notice · map | ended |
| to 11:30 AM PDT | San Francisco Public Utilities Commission (SFPUC) · [house number removed] Mission Bay North · SSO · 75 gallons report · notice · map | ended |
| California State Water Resources Control Board (FHAB program) · Klamath River / Hehlkeek 'We-Roy · Campground Sandy Boat Ramp (R-1) · Algae advisory · volume not reported report · notice · map | listed | |
| California State Water Resources Control Board (FHAB program) · Lake Del Valle · West Beach · Algae advisory · volume not reported report · notice · map | listed | |
| to 9:39 AM PDT | City of San Jose Environmental Services · [house number removed] Santa Margarita Ave, San Jose, CA 95118 · SSO · 62 gallons report · notice · map | ended |
| to 9:45 AM PDT | City of Santa Clarita · Santa Clara River · 1296 - 0788 ([house number removed] Del Monte Drive, Santa Clarita, CA 91355) · SSO · 490 gallons report · notice · map | ended |
| California State Water Resources Control Board (FHAB program) · South Fork Battle Creek · SF ~1.5mi above Cold Cr. (507BTC269) · Algae advisory · volume not reported report · notice · map | listed | |
| California State Water Resources Control Board (FHAB program) · North Yuba River · Carlton Campground, California · Algae advisory · volume not reported report · notice · map | listed | |
| to 3:08 PM PDT | City of Los Angeles LA Sanitation and Environment (Bureau of Sanitation) · Pacific Ocean · [house number removed] South Gulana Avenue · SSO · 204 gallons report · notice · map | ended |
| to 4:08 PM PDT | Los Angeles County Public Works (Consolidated Sewer Maintenance District) · Alhambra Wash, Rio Hondo · 2020-0502 ([house number removed] Potrero Grande Drive, Rosemead, CA) Unincorporated County Area · SSO · 500 gallons report · notice · map | ended |
| California State Water Resources Control Board (FHAB program) · “Lake Zyac” · private HOA lake near Woodlake · Algae advisory · volume not reported report · notice · map | listed | |
| to Sep 15, 7:00 AM PDT | City of Modesto · [house number removed] B Street · SSO · 3,423 gallons report · notice · map | ended |
| to Sep 15, 3:15 AM PDT | National City · [house number removed] E. 8th · SSO · 190 gallons report · notice · map | ended |
| to 3:08 PM PDT | City of Santa Barbara (PWD) · [house number removed] N. Soledad St · SSO · 5,237 gallons report · notice · map | ended |
| California State Water Resources Control Board (FHAB program) · Russian River · Vacation Beach · Algae advisory · volume not reported report · notice · map | listed | |
| to 9:40 PM PDT | City of Palos Verdes Estates · 1598-0447 ([house number removed] Via Valmonte, Palos Verdes Estates, CA 90274) · SSO · 100 gallons report · notice · map | ended |
| to 5:00 PM PDT | City of San Dimas · Walnut Creek · 2386-0218 ([house number removed] Eaton Road, San Dimas, CA 91773) · SSO · 3,500 gallons report · notice · map | ended |
| to Sep 14, 9:15 AM PDT | County of Fresno · “Temporary Storm Basin” · Corner of Marina Drive and Ruscello Lane, Friant, CA 93626 · SSO · 1,600 gallons report · notice · map | ended |
| to 3:00 PM PDT | City of San Mateo · San Mateo Creek · [house number removed] Fiesta Drive · SSO · 1,500 gallons report · notice · map | ended |
| to Sep 18, 3:00 PM PDT | Keyes Community Service District (CDS) · Foote Rd. force main / Railroad right-of-way / Keyes Rd. over-crossing · SSO · 157,000 gallons report · notice · map | ended |
| to 12:50 PM PDT | City of Santa Monica · [house number removed] San Vicente · SSO · 1,550 gallons report · notice · map | ended |
| to 11:50 AM PDT | San Francisco Public Utilities Commission (SFPUC) · [house number removed] Farnsworth · SSO · 150 gallons report · notice · map | ended |
| to Sep 14, 11:49 AM PDT | City of Riverside · Hole Lake · [house number removed] Kingsbury Pl · SSO · 4,695 gallons report · notice · map | ended |
| to Sep 11, 12:58 AM PDT | Burney WD · [house number removed] sapphire road · SSO · 83 gallons report · notice · map | ended |
| to Sep 16, 11:01 AM PDT | City of Sacramento Department of Utilities: Combined Wastewater Collection and Treatment System · Sacramento River · Joe's Crab Shack Lateral · SSO · 313 gallons report · notice · map | ended |
| to 1:00 PM PDT | Arrowbear Park County Water District · Scola/Badger · SSO · 450 gallons report · notice · map | ended |
| California State Water Resources Control Board (FHAB program) · Lake Almanor · Cove near Lakeview Terrace · Algae advisory · volume not reported report · notice · map | listed | |
| California State Water Resources Control Board (FHAB program) · South Fork Eel River · Richardson Grove State Park · Algae advisory · volume not reported report · notice · map | listed | |
| California State Water Resources Control Board (FHAB program) · South Fork Eel River · near Miranda (111SF2122) · Algae advisory · volume not reported report · notice · map | listed | |
| to Sep 8, 6:30 AM PDT | City of Porterville · W Mulberry and HWY 65 · SSO · 800 gallons report · notice · map | reported |
| California State Water Resources Control Board (FHAB program) · “Rice Creek” · North Arm (518RCNAPC) · Algae advisory · volume not reported report · notice · map | listed | |
| California State Water Resources Control Board (FHAB program) · South Yuba River · buttermilk bend trail near Bridgeport · Algae advisory · volume not reported report · notice · map | listed | |
| to Sep 29, 6:50 PM PDT | City of Oakland Public Works · [house number removed] Monterey Blvd, Oakland Ca · SSO · 457 gallons report · notice · map | ended |
| to 11:10 AM PDT | City of San Diego Public Utilities Department · “ROSE CANYON OPEN SPACE PARK.” · Not# 40201435174 Towne Centre Dr. & Nobel Dr. · SSO · 290 gallons report · notice · map | ended |
| to Sep 10, 4:39 PM PDT | City of Oakland Public Works · [house number removed] Empire Road, Oakland Ca · SSO · 505 gallons report · notice · map | ended |
| to 2:33 PM PDT | City of Oakland Public Works · International Blvd and 84th Ave Oakland, Ca.94603 · SSO · 318 gallons report · notice · map | ended |
| to 2:09 PM PDT | City of Rolling Hills Estates · “Manhattan Beach-Frontal Santa Monica Bay Watershed” · 1545-0291 ([house number removed] Highridge Road, Rolling Hills Estates, CA 90274) · SSO · 5,000 gallons report · notice · map | ended |
| to 7:47 AM PDT | California Department of Corrections and Rehabilitation · North Kern State Prison · SSO · 200 gallons report · notice · map | reported |
| to 8:30 PM PDT | California Department of Corrections and Rehabilitation · North Kern State Prison · SSO · 200 gallons report · notice · map | ended |
| to Sep 9, 12:07 PM PDT | City of Sacramento Department of Utilities: Combined Wastewater Collection and Treatment System · Sacramento River · [house number removed] Front St. Joe's Crab Shack Old Sacramento · SSO · 1,173 gallons report · notice · map | ended |
| to 3:15 PM PDT | Apple Valley Town · Mojave River · Sewer Lift Station AD3-1 · SSO · 34,000 gallons report · notice · map | ended |
| to 9:23 PM PDT | City of Oakland Public Works · “Trestle Glen Creek” · [house number removed] Brookwood Road, Oakland Ca · SSO · 146 gallons report · notice · map | ended |
| California State Water Resources Control Board (CIWQS Sanitary Sewer System Database) · [house number removed] Brookwood Rd. Oakland, Ca. 94610 · SSO · 146 gallons report · notice · map | reported | |
| Salton Community Services Dist · Station 19 · SSO · 1,000 gallons report · notice · map | reported | |
| California State Water Resources Control Board (FHAB program) · Mad River · Mad River at Pump Station 4 · Algae advisory · volume not reported report · notice · map | listed | |
| California State Water Resources Control Board (FHAB program) · “Ellis Lake” · Algae advisory · volume not reported report · notice · map | listed | |
| California State Water Resources Control Board (FHAB program) · “Van Duzen River” · at Riverside Park · Algae advisory · volume not reported report · notice · map | listed | |
| California State Water Resources Control Board (FHAB program) · Eel River · near Fortuna · Algae advisory · volume not reported report · notice · map | listed | |
| California State Water Resources Control Board (FHAB program) · South Fork Eel River · near confluence (111SF0011) · Algae advisory · volume not reported report · notice · map | listed | |
| to Sep 4, 12:10 PM PDT | Sacramento Area Sewer District · Magpie Creek · 387614 · SSO · 3,447 gallons report · notice · map | ended |
| to 10:30 AM PDT | County of San Luis Obispo Dept. of Public Works · Doris Ave and Lupine Street · SSO · 80 gallons report · notice · map | ended |
| to 1:35 PM PDT | City of Oakland Public Works · San Francisco Bay · 14th St. & Castro St. · SSO · 2,010 gallons report · notice · map | ended |
| to 7:40 AM PDT | City of Arvin · Richard ST · SSO · 150 gallons report · notice · map | ended |
| to 8:20 AM PDT | Tahoe City PUD · [house number removed] Paradise Flat Ln. · SSO · 742 gallons report · notice · map | ended |
| to 4:01 PM PDT | El Toro Water District · ETWD Wastewater Treatment Plant · SSO · 323,940 gallons report · notice · map | ended |
| to Sep 2, 9:25 AM PDT | City of Oakland Public Works · [house number removed] 90th Avenue, Oakland Ca · SSO · 805 gallons report · notice · map | ended |
| to 7:53 AM PDT | City of San Diego Public Utilities Department · NOT# 40201431819 [house number removed] LLOYD ST. · SSO · 96 gallons report · notice · map | ended |
| California State Water Resources Control Board (FHAB program) · San Juan Creek · Near horse trail · Algae advisory · volume not reported report · notice · map | listed |
Sources: State Water Board CIWQS Sanitary Sewer System spill data: Cat1-2-3-Spills.txt (nightly flat file), retrieved 2026-11-05 15:08 UTC; Surface Water - Freshwater Harmful Algal Blooms, retrieved 2026-11-06 03:07 UTC. A report's record id and times show when you hover or focus its "report" link.