All rankings
California · California (CIWQS)

San Diego City Metropolitan Wastewater Dept (Public Utilities)

C
Often reaches water
Reported events
905
Total volume
53.8M gal
Reached waterways
191 (21%)
Reporting since
2007

What caused the overflows

Root Intrusion
356
Other / Unknown
195
Equipment Failure
193
Grease / FOG
134
Rainfall / Flooding
20
Capacity Issue
7

Reported overflow events (showing 200 of 905)

DateVolumeCauseReached waterReceiving water
May 8, 2026354 galGrease / FOG——
Apr 27, 2026405 galGrease / FOG——
Apr 25, 2026588 galRoot Intrusion——
Apr 16, 2026448 galEquipment Failure——
Apr 9, 2026560 galGrease / FOG——
Apr 3, 2026465 galRoot Intrusion——
Mar 24, 2026302K galOther / UnknownYesSAN DIEGO RIVER
Mar 24, 2026138 galRoot Intrusion——
Mar 24, 2026297K galOther / UnknownYesSAN DIEGO RIVER
Mar 12, 2026340 galRoot Intrusion——
Feb 23, 2026280 galGrease / FOGYesUnnamed Creek
Feb 17, 2026320 galRoot IntrusionYesUNNAMED CREEK
Feb 4, 2026744 galGrease / FOGYesChollas Creek
Jan 31, 2026670 galRoot Intrusion——
Jan 23, 2026195 galGrease / FOG——
Dec 22, 2025790 galRoot IntrusionYesMISSION BAY
Dec 22, 2025790 galRoot IntrusionYesMISSION BAY
Dec 19, 202570 galRoot Intrusion——
Dec 15, 202525K galOther / UnknownYesMISSION BAY
Dec 15, 202525K galOther / UnknownYesMISSION BAY
Dec 13, 2025120 galGrease / FOG——
Nov 29, 2025222 galEquipment Failure——
Nov 28, 202555 galRoot Intrusion——
Nov 13, 2025305 galOther / Unknown——
Nov 7, 2025264 galRoot Intrusion——
Oct 27, 2025500 galRoot Intrusion——
Oct 23, 2025310 galEquipment Failure——
Oct 21, 2025735 galEquipment Failure——
Oct 21, 20255K galOther / Unknown——
Oct 19, 202581K galCapacity Issue——
Oct 19, 202516K galEquipment Failure——
Oct 19, 202556K galEquipment Failure——
Oct 4, 2025660 galEquipment FailureYesSan Dieguito Lagoon
Sep 27, 2025144 galRoot Intrusion——
Sep 22, 2025206 galRoot Intrusion——
Sep 15, 20251K galEquipment FailureYesSAN DIEGO RIVER
Aug 29, 20251K galEquipment Failure——
Aug 26, 2025840 galEquipment FailureYesUN-NAMED STORM CONVEYANCE CHANNEL
Jul 3, 202586 galRoot Intrusion——
Jul 3, 2025350 galRoot Intrusion——
Jun 16, 2025550 galRoot IntrusionYesPACIFIC OCEAN
Jun 12, 20252K galRoot Intrusion——
Jun 8, 20251K galEquipment Failure——
May 27, 2025405 galGrease / FOG——
May 7, 2025735 galEquipment Failure——
Apr 17, 2025102 galEquipment Failure——
Apr 12, 2025315 galGrease / FOG——
Apr 11, 2025172 galRoot Intrusion——
Apr 2, 2025760 galRoot Intrusion——
Mar 23, 2025210 galGrease / FOGYesSAN DIEGO RIVER
Mar 22, 2025375 galRoot Intrusion——
Mar 15, 2025238 galGrease / FOGYesPACIFIC OCEAN (WINDANSEA)
Mar 7, 2025264 galRoot IntrusionYesN/A
Feb 11, 2025355 galGrease / FOG——
Jan 27, 20251K galEquipment FailureYesUN-NAMED STORM CONVEYANCE CHANNEL
Jan 21, 2025235 galGrease / FOG——
Jan 15, 2025850 galEquipment FailureYesPACIFIC OCEAN
Dec 30, 202467 galGrease / FOG——
Dec 30, 2024425 galRoot Intrusion——
Dec 11, 2024570 galEquipment Failure——
Dec 4, 2024570 galGrease / FOG——
Nov 27, 20241K galRoot Intrusion——
Nov 13, 2024850 galEquipment Failure——
Oct 26, 2024325 galGrease / FOG——
Oct 19, 2024780 galEquipment Failure——
Oct 16, 20242K galRoot Intrusion——
Oct 13, 2024825 galEquipment Failure——
Sep 18, 202470 galEquipment Failure——
Sep 15, 20242K galRoot Intrusion——
Sep 15, 20242K galRoot Intrusion——
Sep 10, 2024860 galEquipment Failure——
Aug 31, 202474 galEquipment Failure——
Aug 28, 2024170 galEquipment Failure——
Aug 28, 2024170 galEquipment Failure——
Aug 20, 2024380 galGrease / FOG——
Aug 20, 2024380 galGrease / FOG——
Aug 15, 2024112 galEquipment Failure——
Aug 14, 20243K galEquipment Failure——
Aug 8, 2024925 galEquipment Failure——
Jul 30, 202480 galEquipment Failure——
Jul 5, 2024278 galEquipment Failure——
Jun 25, 2024850 galGrease / FOGYesSAN DIEGO RIVER
Jun 25, 2024850 galGrease / FOGYesSAN DIEGO RIVER
Jun 14, 2024208 galRoot Intrusion——
Jun 14, 2024208 galRoot Intrusion——
May 19, 2024252 galRoot Intrusion——
May 19, 2024252 galRoot Intrusion——
May 18, 2024160 galRoot Intrusion——
May 18, 2024160 galRoot Intrusion——
May 13, 2024900 galGrease / FOG——
May 12, 2024233 galRoot Intrusion——
May 12, 2024233 galGrease / FOG——
Apr 29, 2024405 galRoot Intrusion——
Mar 27, 20243K galEquipment FailureYesWEST SIDE CREEK
Mar 23, 2024462 galEquipment Failure——
Mar 7, 2024118 galEquipment Failure——
Mar 6, 2024310 galEquipment Failure——
Mar 6, 202421K galEquipment FailureYesPACIFIC BEACH
Mar 5, 202468 galRoot Intrusion——
Mar 5, 202460 galGrease / FOG——
Mar 1, 20242K galRoot Intrusion—NO RECEIVING BODYS
Feb 10, 2024420 galEquipment Failure—None
Feb 6, 202477K galRainfall / FloodingYesSAN DIEGO BAY, PACIFIC OCEAN.
Feb 6, 20241K galOther / UnknownYesNone
Feb 6, 202477K galRainfall / FloodingYesSAN DIEGO BAY, PACIFIC OCEAN.
Feb 6, 202477K galRainfall / FloodingYesSAN DIEGO BAY, PACIFIC OCEAN.
Jan 27, 202425K galOther / UnknownYesCHOLLAS CREEK
Jan 26, 2024144 galEquipment Failure——
Jan 23, 2024550 galRoot Intrusion——
Jan 22, 20242.0M galRainfall / FloodingYesSAN DIEGO BAY, SWEETWATER RIVER, PACIFIC OCEAN.
Jan 22, 20242.0M galRainfall / FloodingYesSAN DIEGO BAY, SWEETWATER RIVER, SAN DIEGO RIVER, PACIFIC OCEAN.
Jan 22, 20242.0M galRainfall / FloodingYesSAN DIEGO BAY, SWEETWATER RIVER, SAN DIEGO RIVER, PACIFIC OCEAN.
Jan 22, 202411.4M galRainfall / FloodingYesSAN DIEGO BAY, SWEETWATER RIVER, PACIFIC OCEAN, SAN DIEGO RIVER (ASSUMED)
Jan 22, 20242K galRainfall / FloodingYesSan Diego River
Jan 22, 20242.0M galRainfall / FloodingYesSAN DIEGO BAY, SWEETWATER RIVER, PACIFIC OCEAN, SAN DIEGO RIVER (ASSUMED)
Jan 21, 2024570 galRoot Intrusion——
Jan 9, 20243K galRoot IntrusionYesDRY EPHEMERAL STREAM
Dec 26, 2023980 galGrease / FOG——
Dec 10, 20232K galEquipment FailureYesNone
Nov 30, 2023810 galGrease / FOG——
Nov 24, 20232K galEquipment Failure——
Nov 13, 2023410 galEquipment Failure—UNNAMED DRAINAGE CONVEYANCE SYSTEM.
Nov 3, 20233K galEquipment Failure—N/A
Oct 29, 2023142 galRoot Intrusion——
Oct 28, 2023205 galRoot Intrusion——
Oct 15, 2023114 galGrease / FOG——
Sep 14, 2023382 galEquipment Failure——
Aug 23, 202313K galEquipment Failure—N/A
Aug 23, 2023975 galGrease / FOGYesnone
Jul 29, 20232K galEquipment Failure——
Jul 20, 20232K galEquipment FailureYesMission Bay/Enchanted cove
May 24, 202399 galRoot Intrusion—Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Unpaved surface
May 23, 2023550 galEquipment Failure—Other (specify below);Unpaved surface
May 20, 2023194 galOther / Unknown—Unpaved surface
May 15, 20232K galRoot IntrusionYesDrainage Channel;Surface Water;Unpaved surface
May 2, 2023100 galOther / Unknown—Building or Structure
Apr 23, 20234K galRoot Intrusion—Other (specify below);Separate Storm Drain;Unpaved surface
Apr 16, 202360 galRoot Intrusion—Other (specify below);Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Unpaved surface
Apr 15, 2023200 galRoot Intrusion—Other (specify below);Paved Surface;Separate Storm Drain;Street/Curb and Gutter
Apr 9, 202345 galEquipment Failure—Other (specify below);Unpaved surface
Apr 1, 2023210 galRoot Intrusion—Other (specify below);Unpaved surface
Apr 1, 202356 galRoot Intrusion—Other (specify below);Paved Surface;Street/Curb and Gutter
Mar 26, 202390 galRoot Intrusion—Paved Surface;Street/Curb and Gutter
Mar 24, 202353K galEquipment FailureYesBuilding or Structure;Surface Water;Unpaved surface
Mar 21, 2023280 galRainfall / FloodingYesSurface Water;Unpaved surface
Mar 19, 2023810 galGrease / FOGYesDrainage Channel;Unpaved surface
Mar 18, 202376 galGrease / FOG—Paved Surface;Street/Curb and Gutter
Feb 27, 202393 galRoot Intrusion—Building or Structure
Feb 26, 2023120 galRoot IntrusionYesOther (specify below);Separate Storm Drain;Street/Curb and Gutter;Surface Water
Feb 25, 202360 galOther / Unknown—Other (specify below)
Feb 20, 2023535 galEquipment Failure—Other (specify below);Unpaved surface
Feb 17, 2023150 galEquipment Failure—Unpaved surface
Feb 16, 202390 galRoot Intrusion—Other (specify below);Paved Surface;Separate Storm Drain;Street/Curb and Gutter
Feb 10, 20232K galEquipment FailureYesBuilding or Structure;Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Surface Water
Feb 8, 20238K galEquipment FailureYesDrainage Channel;Other (specify below);Surface Water;Unpaved surface
Jan 17, 2023430 galEquipment FailureYesPaved Surface;Separate Storm Drain;Street/Curb and Gutter;Unpaved surface
Jan 17, 2023510 galEquipment FailureYesBuilding or Structure;Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Surface Water;Unpaved surface
Jan 16, 20239.9M galEquipment FailureYesBeach;Building or Structure;Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Surface Water;Unpaved surface
Jan 13, 20234K galEquipment Failure—Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Unpaved surface
Jan 9, 202322 galRoot Intrusion—Building or Structure;Unpaved surface
Jan 6, 2023129 galEquipment Failure—Paved Surface;Street/Curb and Gutter
Dec 30, 202260 galRoot Intrusion—Street/Curb and Gutter
Dec 29, 2022375 galEquipment Failure—Separate Storm Drain
Dec 16, 2022160 galRoot IntrusionYesDrainage Channel;Unpaved surface
Dec 11, 2022210 galRoot Intrusion—Other (specify below);Unpaved surface
Dec 11, 202260 galRoot Intrusion—Other (specify below);Unpaved surface
Dec 7, 2022119 galRoot Intrusion—Unpaved surface
Dec 7, 2022170 galOther / UnknownYesDrainage Channel;Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Unpaved surface
Dec 1, 2022240 galEquipment FailureYesDrainage Channel;Surface Water;Unpaved surface
Nov 23, 2022235 galRoot Intrusion—Paved Surface;Separate Storm Drain;Street/Curb and Gutter
Nov 23, 202230 galEquipment Failure—Paved Surface;Street/Curb and Gutter
Nov 20, 2022350 galGrease / FOG—Other (specify below)
Nov 17, 2022330 galRoot Intrusion—Separate Storm Drain
Nov 9, 2022510 galEquipment FailureYesDrainage Channel;Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Surface Water;Unpaved surface
Nov 8, 2022225 galEquipment Failure—Building or Structure
Oct 30, 2022480 galRoot Intrusion—Building or Structure
Oct 23, 2022750 galGrease / FOGYesOther (specify below)
Oct 8, 2022620 galEquipment Failure—Building or Structure;Paved Surface
Sep 29, 2022740 galEquipment Failure—Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Unpaved surface
Sep 17, 202217 galRoot Intrusion—Other (specify below)
Sep 1, 2022152K galEquipment FailureYesPaved Surface;Unpaved surface
Aug 30, 202211K galEquipment FailureYesBeach;Separate Storm Drain;Unpaved surface
Aug 30, 2022495 galRoot Intrusion—Paved Surface;Street/Curb and Gutter;Unpaved surface
Aug 23, 20223K galRoot Intrusion—Paved Surface;Separate Storm Drain;Street/Curb and Gutter
Jul 11, 2022762 galRoot Intrusion—Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Unpaved surface
May 25, 2022750 galEquipment Failure—Other (specify below);Unpaved surface
May 23, 202226K galOther / Unknown—Other (specify below)
May 12, 20222K galEquipment Failure—Combined Storm Drain (Combined CS only)
May 4, 20222K galEquipment Failure—Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Unpaved surface
Apr 30, 2022205 galRoot Intrusion—Street/Curb and Gutter
Apr 14, 20222K galEquipment Failure—Building or Structure;Paved Surface;Separate Storm Drain;Street/Curb and Gutter
Apr 12, 2022555 galGrease / FOG—Paved Surface;Separate Storm Drain;Street/Curb and Gutter
Feb 24, 2022785 galRoot Intrusion—Paved Surface;Separate Storm Drain;Street/Curb and Gutter
Feb 17, 2022360 galEquipment Failure—Paved Surface;Separate Storm Drain;Street/Curb and Gutter
Feb 7, 2022255 galEquipment Failure—Paved Surface;Separate Storm Drain;Street/Curb and Gutter
Jan 19, 202225 galGrease / FOG—Other (specify below)
Jan 18, 20226K galOther / UnknownYesOther (specify below)
Jan 8, 2022300 galRoot IntrusionYesDrainage Channel;Other (specify below);Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Surface Water
Jan 1, 2022165 galGrease / FOG—Other (specify below)
Dec 27, 202175 galRoot Intrusion—Unpaved surface

Source: California (CIWQS). Volumes are utility-reported estimates. Some events lack precise coordinates or volumes.