California / Reports / 2026 /
California sewage discharges, July 2026
36 records of sewage discharges and water advisories in California dated in July 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.
Cyanobacteria (harmful blue-green algae) can make water unfit for contact; the issuing authority decides when its advisory ends. Sanitary sewer overflow (SSO): sewage spills from a sewer meant to carry sewage separately from rainwater.
| When | Report | Status |
|---|---|---|
| California State Water Resources Control Board (FHAB program) · West Valley Reservoir · Boat Launch · Algae advisory · volume not reported · notice · map | listed | |
| California State Water Resources Control Board (FHAB program) · Tulloch Reservoir · Cove north of Kiva · Algae advisory · volume not reported · notice · map | listed | |
| California State Water Resources Control Board (FHAB program) · Tulloch Reservoir · Kiva boat launch · Algae advisory · volume not reported · notice · map | listed | |
| California State Water Resources Control Board (FHAB program) · “Trout Creek” · Lake Tahoe Community College · Algae advisory · volume not reported · notice · map | listed | |
| California State Water Resources Control Board (FHAB program) · “Indian Creek” · below Elephant's Playground (518IND578) · Algae advisory · volume not reported · notice · map | listed | |
| to 4:19 PM PDT | City of Oakland Public Works · [house number removed] Lyon Avenue, Oakland Ca · SSO · 457 gallons · notice · map | ended |
| California State Water Resources Control Board (FHAB program) · Hume Lake · north · Algae advisory · volume not reported · notice · map | listed | |
| California State Water Resources Control Board (FHAB program) · Hume Lake · west · Algae advisory · volume not reported · notice · map | listed | |
| California State Water Resources Control Board (FHAB program) · Hume Lake · east · Algae advisory · volume not reported · notice · map | listed | |
| California State Water Resources Control Board (FHAB program) · “Delta Coves” · North · Algae advisory · volume not reported · notice · map | listed | |
| California State Water Resources Control Board (FHAB program) · “Navarro River” · Bridge by Hendy Woods · Algae advisory · volume not reported · notice · map | listed | |
| California State Water Resources Control Board (FHAB program) · “Discovery Bay Marina” · Bar and Grill · Algae advisory · volume not reported · notice · map | listed | |
| California State Water Resources Control Board (FHAB program) · Carquinez Strait · Radke Martinez Regional Shoreline Park · Algae advisory · volume not reported report · notice · map | to Nov 12, 8:00 PM PST | |
| California State Water Resources Control Board (FHAB program) · “Gray Eagle Creek” · ~1mi below Gray Eagle Ldg. Rd. (518GEC297) · Algae advisory · volume not reported · notice · map | listed | |
| California State Water Resources Control Board (FHAB program) · “Jamison Creek” · ~1.9mi below Little Jamison Cr. (518JSC273) · Algae advisory · volume not reported · notice · map | listed | |
| California State Water Resources Control Board (FHAB program) · “White River” · at White River Campground (555WHTCMP) · Algae advisory · volume not reported · notice · map | listed | |
| California State Water Resources Control Board (FHAB program) · Lake Ralphine · Howarth Park · Algae advisory · volume not reported · notice · map | listed | |
| California State Water Resources Control Board (FHAB program) · Hume Lake · Sequoia National Forest · Algae advisory · volume not reported · notice · map | listed | |
| California State Water Resources Control Board (FHAB program) · “Lake Hacienda” · Highway 178 /mirmonte drive · Algae advisory · volume not reported · notice · map | listed | |
| California State Water Resources Control Board (FHAB program) · Tule Lake · Donut Hole area (TLNWR 1a) · Algae advisory · volume not reported · notice · map | listed | |
| California State Water Resources Control Board (FHAB program) · “Skinner Creek” · ~0.2mi above Little Sur River (308PS0156) · Algae advisory · volume not reported · notice · map | listed | |
| California State Water Resources Control Board (FHAB program) · “Little Sur River” · above Skinner Creek (308WER325) · Algae advisory · volume not reported · notice · map | listed | |
| California State Water Resources Control Board (FHAB program) · “Discovery Bay” · Carillo Bay · Algae advisory · volume not reported · notice · map | listed | |
| California State Water Resources Control Board (FHAB program) · Carquinez Strait · Martinez Marina at Radke Martinez Regional Shoreline · Algae advisory · volume not reported · notice · map | listed | |
| California State Water Resources Control Board (FHAB program) · “Fall River Lake” · Fall River Lake Boat Ramp · Algae advisory · volume not reported · notice · map | listed | |
| California State Water Resources Control Board (FHAB program) · Lake Britton · Jamo Point Boat Launch · Algae advisory · volume not reported · notice · map | listed | |
| California State Water Resources Control Board (FHAB program) · Clear Lake · Buckingham Park · Algae advisory · volume not reported · notice · map | listed | |
| California State Water Resources Control Board (FHAB program) · Clear Lake · north drive · Algae advisory · volume not reported · notice · map | listed | |
| California State Water Resources Control Board (FHAB program) · Clear Lake · Soda Bay · Algae advisory · volume not reported · notice · map | listed | |
| California State Water Resources Control Board (FHAB program) · Clear Lake · Monitor Point · Algae advisory · volume not reported · notice · map | listed | |
| California State Water Resources Control Board (FHAB program) · “San Antonio River” · ~0.5mi above Bear Cyn. Cr. (309PS0116) · Algae advisory · volume not reported · notice · map | listed | |
| California State Water Resources Control Board (FHAB program) · Clear Lake · Soda Bay · Algae advisory · volume not reported · notice · map | listed | |
| California State Water Resources Control Board (FHAB program) · Lake Berryessa · Putah Canyon campground · Algae advisory · volume not reported · notice · map | listed | |
| California State Water Resources Control Board (FHAB program) · Salmon Creek · Estuary · Algae advisory · volume not reported · notice · map | listed | |
| California State Water Resources Control Board (FHAB program) · Russian River · Patterson Point Preserve · Algae advisory · volume not reported · notice · map | listed | |
| to Jul 1 | California State Water Resources Control Board (FHAB program) · “Civic Center Park” · Duck Pond · Algae advisory · volume not reported · notice · map | lifted |
Sources: Surface Water - Freshwater Harmful Algal Blooms, retrieved 2026-11-06 03:07 UTC; State Water Board CIWQS Sanitary Sewer System spill data: Cat1-2-3-Spills.txt (nightly flat file), retrieved 2026-11-05 15:08 UTC. A report's record id and times show when you hover or focus its "report" link.