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California · California (CIWQS)

CCSF - San Francisco Airport

A
Rarely reaches water
Reported events
290
Total volume
1.1M gal
Reached waterways
2 (1%)
Reporting since
2007

What caused the overflows

Equipment Failure
127
Grease / FOG
97
Other / Unknown
64
Capacity Issue
2

Reported overflow events (showing 200 of 290)

DateVolumeCauseReached waterReceiving water
Feb 18, 2026282 galGrease / FOG——
Dec 14, 2025418 galGrease / FOG——
Dec 2, 2025909 galEquipment Failure——
Nov 30, 202553 galGrease / FOG——
Nov 25, 2025131 galGrease / FOG——
Sep 14, 2025302 galEquipment Failure——
Sep 10, 202578 galEquipment Failure——
Sep 9, 202571 galEquipment Failure——
Sep 8, 2025506 galEquipment Failure——
Aug 27, 2025189 galEquipment Failure——
Jul 3, 202564 galEquipment Failure——
Jun 15, 202579 galEquipment Failure——
Jun 6, 2025138 galEquipment Failure——
May 28, 202559 galEquipment Failure——
May 28, 2025391 galGrease / FOG——
Apr 18, 202566 galEquipment Failure——
Apr 10, 2025115 galGrease / FOG——
Apr 3, 202583 galOther / Unknown——
Feb 10, 202565 galGrease / FOG——
Jan 19, 20252K galGrease / FOG——
Oct 31, 20241K galEquipment Failure——
May 9, 2024175 galEquipment Failure——
Apr 25, 2024107 galEquipment Failure——
Mar 22, 2024151 galEquipment Failure——
Jan 29, 2024347 galEquipment Failure——
Jan 17, 2024372 galGrease / FOG——
Dec 27, 202389 galGrease / FOG——
Dec 7, 2023317 galGrease / FOG——
Oct 29, 2023402 galEquipment Failure——
Oct 29, 2023402 galEquipment Failure——
Sep 24, 2023119 galGrease / FOG——
Aug 30, 202362 galEquipment Failure——
Aug 11, 2023316 galGrease / FOG——
Jul 29, 202351 galEquipment Failure——
Jul 16, 202379 galGrease / FOG——
Jul 14, 2023170 galGrease / FOG——
Jul 13, 2023238 galEquipment Failure——
Jul 11, 202392 galEquipment Failure——
Jun 19, 2023213 galEquipment Failure——
Apr 20, 202328 galEquipment Failure—Other (specify below)
Apr 14, 2023118 galEquipment Failure—Other (specify below);Paved Surface
Mar 24, 202363 galEquipment Failure—Other (specify below);Paved Surface
Mar 10, 202350 galEquipment Failure—Paved Surface
Jan 26, 2023340 galEquipment Failure—Other (specify below);Paved Surface
Dec 29, 202213 galEquipment Failure—Paved Surface
Dec 25, 202250 galEquipment Failure—Other (specify below);Paved Surface
Dec 17, 202210 galOther / Unknown—Paved Surface
Dec 2, 202262 galOther / Unknown—Other (specify below);Paved Surface
Nov 22, 20223 galGrease / FOG—Paved Surface
Sep 28, 202222 galEquipment Failure—Paved Surface
Sep 1, 20221 galOther / Unknown—Paved Surface
Aug 29, 2022417 galEquipment Failure—Other (specify below);Paved Surface
Aug 28, 2022431 galEquipment Failure—Other (specify below);Paved Surface
Aug 13, 202221 galOther / Unknown—Paved Surface
Aug 13, 202297 galEquipment Failure—Paved Surface
Aug 11, 20221 galOther / Unknown—Paved Surface
Aug 10, 202290 galOther / Unknown—Paved Surface
Aug 7, 202299 galEquipment Failure—Paved Surface
Aug 5, 202225 galOther / Unknown—Paved Surface
Apr 29, 2022196 galOther / Unknown—Other (specify below);Paved Surface
Apr 17, 202290K galEquipment Failure—Other (specify below);Paved Surface
Mar 24, 202213 galEquipment Failure—Paved Surface
Mar 22, 20227 galGrease / FOG—Paved Surface
Jan 11, 20221 galEquipment Failure—Paved Surface
Oct 29, 20215 galOther / Unknown—Paved Surface
Oct 9, 2021291 galGrease / FOG—Other (specify below);Paved Surface
Jul 11, 202152 galGrease / FOG—Paved Surface
Jul 5, 20211 galEquipment Failure—Paved Surface
Jun 24, 202130 galGrease / FOG—Other (specify below);Paved Surface
May 31, 20217 galEquipment Failure—Building or Structure;Other (specify below);Paved Surface
May 24, 202193 galOther / Unknown—Paved Surface
May 19, 202152 galEquipment Failure—Paved Surface
Mar 9, 2021102 galOther / Unknown—Other (specify below);Paved Surface
Mar 7, 202193 galOther / Unknown—Other (specify below);Paved Surface
Feb 23, 202171 galEquipment Failure—Building or Structure;Other (specify below);Paved Surface
Feb 3, 202150 galOther / Unknown—Building or Structure;Paved Surface
Dec 27, 2020137 galOther / Unknown—Paved Surface
Nov 7, 2020675 galEquipment Failure—Paved Surface;Separate Storm Drain
Jul 16, 2020222 galEquipment Failure—Building or Structure
May 15, 202075 galGrease / FOG—Building or Structure;Paved Surface;Separate Storm Drain
Apr 23, 202015K galOther / Unknown—Other (specify below);Paved Surface
Apr 16, 202049 galEquipment Failure—Building or Structure;Paved Surface
Apr 9, 202015 galEquipment Failure—Paved Surface
Feb 26, 20201 galEquipment Failure—Paved Surface
Feb 24, 20201 galEquipment Failure—Paved Surface
Feb 6, 2020594 galGrease / FOG—Paved Surface;Separate Storm Drain
Feb 3, 20202 galGrease / FOG—Paved Surface
Jan 20, 2020111 galEquipment Failure—Paved Surface;Separate Storm Drain
Dec 21, 201942 galEquipment Failure—Paved Surface
Dec 21, 2019722K galEquipment Failure—Separate Storm Drain
Dec 10, 201968 galGrease / FOG—Paved Surface;Separate Storm Drain
Nov 30, 2019681 galEquipment Failure—Building or Structure;Paved Surface;Separate Storm Drain
Nov 27, 20193 galGrease / FOG—Paved Surface
Nov 18, 20197 galEquipment Failure—Paved Surface
Nov 17, 2019600 galGrease / FOG—Paved Surface;Separate Storm Drain
Oct 21, 2019877 galEquipment Failure—Paved Surface;Separate Storm Drain
Oct 17, 2019604 galEquipment Failure—Paved Surface;Separate Storm Drain
Oct 6, 20191 galGrease / FOG—Paved Surface
Aug 26, 20194 galEquipment Failure—Paved Surface
Aug 21, 2019451 galEquipment Failure—Paved Surface
Aug 9, 20193 galEquipment Failure—Paved Surface
Jul 30, 201910 galOther / Unknown—Paved Surface
Jul 25, 2019199 galEquipment Failure—Paved Surface;Separate Storm Drain
Jul 15, 20192K galEquipment Failure—Building or Structure;Paved Surface
Jun 18, 201912 galGrease / FOG—Paved Surface
Jun 16, 201930 galEquipment Failure—Paved Surface;Separate Storm Drain
May 30, 201910 galGrease / FOG—Paved Surface
Apr 10, 201910 galGrease / FOG—Paved Surface
Jan 27, 2019104 galEquipment Failure—Paved Surface
Jan 25, 20195 galEquipment Failure—Separate Storm Drain
Dec 10, 20181 galEquipment Failure—Paved Surface;Separate Storm Drain
Nov 7, 201810 galEquipment Failure—Paved Surface
Oct 30, 201840 galEquipment Failure—Paved Surface
Aug 24, 2018160 galEquipment Failure—Paved Surface;Separate Storm Drain
May 30, 2018695 galGrease / FOG—Paved Surface;Separate Storm Drain
May 28, 201820 galGrease / FOG—Paved Surface
May 10, 201851 galEquipment Failure—Building or Structure;Paved Surface;Separate Storm Drain
May 6, 201894 galGrease / FOG—Paved Surface;Separate Storm Drain
May 3, 201866 galGrease / FOG—Other (specify below);Paved Surface
Apr 10, 2018130 galEquipment Failure—Paved Surface;Separate Storm Drain
Mar 24, 2018375 galEquipment Failure—Paved Surface;Separate Storm Drain
Mar 16, 2018100 galEquipment Failure—Paved Surface;Separate Storm Drain
Mar 15, 2018300 galEquipment Failure—Paved Surface;Separate Storm Drain
Mar 7, 201810 galEquipment Failure—Paved Surface;Separate Storm Drain
Feb 23, 201818 galGrease / FOG—Paved Surface
Feb 11, 2018377 galEquipment Failure—Paved Surface;Separate Storm Drain
Feb 5, 20181K galEquipment Failure—Paved Surface;Separate Storm Drain;Street/Curb and Gutter
Dec 27, 201735 galEquipment Failure—Paved Surface;Separate Storm Drain
Dec 24, 201726 galEquipment Failure—Other (specify below)
Dec 9, 201750 galEquipment Failure—Paved Surface;Separate Storm Drain
Nov 21, 2017692 galEquipment Failure—Paved Surface;Separate Storm Drain
Nov 9, 2017522 galOther / Unknown—Building or Structure;Paved Surface;Separate Storm Drain
Oct 23, 2017150 galEquipment Failure—Paved Surface;Separate Storm Drain
Oct 10, 20172K galEquipment Failure—Paved Surface;Separate Storm Drain
Oct 8, 2017144 galEquipment Failure—Paved Surface;Separate Storm Drain
Oct 6, 2017803 galEquipment Failure—Paved Surface;Separate Storm Drain
Aug 24, 201729 galGrease / FOG—Paved Surface;Separate Storm Drain
Jul 22, 201715 galOther / Unknown—Separate Storm Drain
Jul 9, 201780 galGrease / FOG—Paved Surface;Separate Storm Drain
Jul 4, 2017405 galGrease / FOG—Paved Surface;Separate Storm Drain
Jun 12, 201776 galEquipment Failure—Separate Storm Drain
Apr 21, 201757 galOther / Unknown—Paved Surface
Mar 20, 20179 galOther / Unknown—Paved Surface;Separate Storm Drain
Jan 15, 2017637 galEquipment Failure—Separate Storm Drain
Jan 6, 20176K galGrease / FOG—Paved Surface;Separate Storm Drain
Jan 4, 201712 galEquipment Failure—Paved Surface
Dec 27, 20161K galEquipment Failure—Building or Structure;Paved Surface
Dec 5, 20166K galEquipment Failure—Separate Storm Drain;Street/Curb and Gutter
Nov 26, 201615 galEquipment Failure—Paved Surface
Oct 30, 2016273 galEquipment Failure—Paved Surface
Oct 19, 2016269 galEquipment Failure—Paved Surface;Separate Storm Drain
Oct 15, 201623 galGrease / FOG—Other (specify below);Paved Surface
Oct 13, 20162K galEquipment Failure—Paved Surface;Separate Storm Drain
Oct 5, 2016189 galEquipment Failure—Paved Surface;Separate Storm Drain
Sep 13, 2016632 galOther / Unknown—Paved Surface;Separate Storm Drain
Sep 1, 201646 galEquipment Failure—Building or Structure;Paved Surface
Aug 31, 20162K galGrease / FOG—Paved Surface;Separate Storm Drain
Aug 28, 2016115 galEquipment Failure—Paved Surface;Separate Storm Drain
Aug 27, 2016210 galEquipment Failure—Paved Surface;Separate Storm Drain
Aug 19, 201636 galGrease / FOG—Paved Surface
Aug 4, 20161K galEquipment Failure—Paved Surface;Separate Storm Drain
Apr 26, 201620 galOther / Unknown—Other (specify below);Paved Surface
Apr 15, 201650 galEquipment Failure—Paved Surface;Separate Storm Drain
Apr 4, 2016357 galGrease / FOG—Separate Storm Drain
Mar 24, 2016498 galGrease / FOG—Paved Surface;Separate Storm Drain
Mar 23, 2016970 galGrease / FOG—Paved Surface;Separate Storm Drain
Mar 20, 20165 galEquipment Failure—Paved Surface;Separate Storm Drain
Mar 14, 20165 galGrease / FOG—Paved Surface
Mar 14, 20164K galOther / Unknown—Unpaved surface
Mar 9, 2016135 galEquipment Failure—Paved Surface;Separate Storm Drain
Mar 8, 201660 galOther / Unknown—Paved Surface;Separate Storm Drain
Feb 3, 201615 galOther / Unknown—Paved Surface
Feb 2, 2016200 galOther / Unknown—Paved Surface
Feb 1, 2016135 galOther / Unknown—Paved Surface
Jan 31, 201678 galOther / Unknown—Paved Surface
Jan 11, 201612 galGrease / FOG—Paved Surface
Dec 13, 20152K galOther / UnknownYesSurface Water
Nov 6, 201540 galGrease / FOG—Paved Surface;Separate Storm Drain
Oct 9, 20151K galGrease / FOG—Paved Surface;Separate Storm Drain
Sep 18, 2015210 galGrease / FOG—Paved Surface;Separate Storm Drain
Sep 14, 201530 galEquipment Failure—Building or Structure;Paved Surface
Aug 30, 201525 galOther / Unknown—Paved Surface
Aug 15, 2015233 galEquipment Failure—Other (specify below);Paved Surface
Aug 14, 2015221 galEquipment Failure—Other (specify below);Paved Surface
May 19, 201515 galGrease / FOG—Paved Surface
May 2, 201554 galGrease / FOG—Paved Surface
Mar 22, 201550 galOther / Unknown—Building or Structure
Mar 5, 2015243 galEquipment Failure—Paved Surface;Separate Storm Drain
Mar 4, 2015162 galEquipment Failure—Paved Surface;Separate Storm Drain
Feb 18, 201550 galEquipment Failure—Paved Surface
Dec 18, 2014100 galGrease / FOG—Paved Surface;Separate Storm Drain
Dec 16, 201475 galGrease / FOGYesSeparate Storm Drain;Surface Water
Dec 13, 201420 galGrease / FOG—Paved Surface;Separate Storm Drain
Nov 4, 20142K galEquipment Failure—Building or Structure
Oct 12, 201460 galGrease / FOG—Paved Surface;Separate Storm Drain
Oct 3, 201410 galEquipment Failure—Paved Surface
Jul 1, 20141 galOther / Unknown—Paved Surface
May 21, 201453 galGrease / FOG—Building or Structure
May 16, 2014780 galGrease / FOG—Building or Structure;Paved Surface;Separate Storm Drain
Feb 17, 2014301 galEquipment Failure—Paved Surface;Separate Storm Drain

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