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California · California (CIWQS)

Antioch City

A
Rarely reaches water
Reported events
562
Total volume
745K gal
Reached waterways
10 (2%)
Reporting since
2007

What caused the overflows

Root Intrusion
245
Equipment Failure
166
Grease / FOG
103
Other / Unknown
46
Rainfall / Flooding
1
Capacity Issue
1

Reported overflow events (showing 200 of 562)

DateVolumeCauseReached waterReceiving water
Jan 8, 2026142 galGrease / FOG——
Sep 2, 2025515 galGrease / FOG——
Mar 17, 202588 galGrease / FOG——
Jan 28, 202583 galGrease / FOG——
Dec 10, 2024115 galEquipment Failure——
Nov 21, 202457 galEquipment Failure——
Nov 18, 202488 galEquipment Failure——
Apr 27, 2024145 galGrease / FOG——
Feb 2, 2024132 galEquipment Failure——
Oct 31, 2023189 galGrease / FOG——
May 22, 20237 galGrease / FOG—Paved Surface;Unpaved surface
May 11, 202336 galRoot Intrusion—Separate Storm Drain;Street/Curb and Gutter
May 10, 202323 galGrease / FOG—Street/Curb and Gutter
Apr 27, 20237 galEquipment Failure—Street/Curb and Gutter
Mar 21, 20232 galEquipment Failure—Paved Surface;Unpaved surface
Feb 2, 20234 galEquipment Failure—Paved Surface;Street/Curb and Gutter
Dec 8, 2022169 galGrease / FOG—Separate Storm Drain;Street/Curb and Gutter
Nov 22, 20224 galGrease / FOG—Street/Curb and Gutter
Oct 11, 20229 galRoot Intrusion—Separate Storm Drain;Unpaved surface
Aug 31, 20228 galGrease / FOG—Paved Surface;Street/Curb and Gutter
Jul 26, 202237K galOther / UnknownYesPaved Surface;Separate Storm Drain;Street/Curb and Gutter;Surface Water
Jul 21, 20223 galEquipment Failure—Paved Surface;Street/Curb and Gutter;Unpaved surface
Jul 7, 20225 galRoot Intrusion—Paved Surface;Street/Curb and Gutter;Unpaved surface
May 6, 202212 galEquipment Failure—Paved Surface
Mar 7, 202221 galEquipment Failure—Paved Surface;Street/Curb and Gutter
Mar 6, 202215 galRoot Intrusion—Street/Curb and Gutter;Unpaved surface
Mar 5, 20223K galGrease / FOG—Paved Surface;Separate Storm Drain
Mar 2, 202298 galGrease / FOG—Street/Curb and Gutter
Feb 15, 202232 galRoot Intrusion—Street/Curb and Gutter;Unpaved surface
Jan 3, 202220 galRoot Intrusion—Street/Curb and Gutter;Unpaved surface
Jan 3, 202224 galRoot Intrusion—Paved Surface;Street/Curb and Gutter
Dec 19, 20217 galEquipment Failure—Separate Storm Drain
Nov 2, 202131 galRoot Intrusion—Separate Storm Drain;Street/Curb and Gutter;Unpaved surface
Oct 19, 202154 galGrease / FOG—Separate Storm Drain;Street/Curb and Gutter;Unpaved surface
Sep 26, 202147 galRoot Intrusion—Paved Surface;Street/Curb and Gutter
Sep 20, 20213 galRoot Intrusion—Unpaved surface
Sep 9, 202123 galRoot Intrusion—Paved Surface;Street/Curb and Gutter
Jun 11, 202113 galRoot Intrusion—Other (specify below);Street/Curb and Gutter;Unpaved surface
Jun 9, 20212 galRoot Intrusion—Other (specify below);Street/Curb and Gutter
Jun 4, 20212 galRoot Intrusion—Other (specify below)
May 14, 202155 galEquipment Failure—Paved Surface;Street/Curb and Gutter
Apr 26, 20213 galEquipment Failure—Paved Surface
Apr 12, 2021156 galEquipment Failure—Separate Storm Drain;Street/Curb and Gutter
Feb 25, 202179 galGrease / FOG—Paved Surface;Separate Storm Drain;Street/Curb and Gutter
Feb 10, 20215 galRoot Intrusion—Paved Surface;Street/Curb and Gutter
Jan 25, 20215 galRoot Intrusion—Other (specify below);Unpaved surface
Oct 31, 202012 galEquipment Failure—Street/Curb and Gutter;Unpaved surface
Oct 8, 202018 galRoot Intrusion—Street/Curb and Gutter;Unpaved surface
Oct 7, 20202 galRoot Intrusion—Street/Curb and Gutter;Unpaved surface
Oct 7, 202010 galEquipment Failure—Paved Surface;Street/Curb and Gutter
Oct 2, 20208 galRoot Intrusion—Street/Curb and Gutter
Sep 16, 202015 galRoot Intrusion—Paved Surface;Street/Curb and Gutter
Aug 20, 20207 galRoot Intrusion—Paved Surface;Street/Curb and Gutter
Aug 19, 20205 galEquipment Failure—Paved Surface;Street/Curb and Gutter
Jul 29, 20201 galEquipment Failure—Paved Surface
Jul 21, 202019 galRoot Intrusion—Separate Storm Drain;Street/Curb and Gutter
Jul 13, 202019 galEquipment Failure—Separate Storm Drain;Street/Curb and Gutter;Unpaved surface
Jun 21, 202025 galRoot Intrusion—Separate Storm Drain;Street/Curb and Gutter;Unpaved surface
Jun 9, 202011 galGrease / FOG—Street/Curb and Gutter;Unpaved surface
May 18, 202030 galRoot Intrusion—Unpaved surface
Apr 27, 202028 galGrease / FOG—Paved Surface;Street/Curb and Gutter;Unpaved surface
Apr 24, 2020178 galRoot Intrusion—Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Unpaved surface
Apr 13, 2020653 galRoot Intrusion—Separate Storm Drain
Mar 23, 20207 galRoot Intrusion—Street/Curb and Gutter
Mar 3, 2020384 galRoot Intrusion—Paved Surface;Separate Storm Drain;Street/Curb and Gutter
Feb 16, 2020159 galEquipment Failure—Separate Storm Drain;Street/Curb and Gutter;Unpaved surface
Feb 12, 202017 galEquipment Failure—Paved Surface;Unpaved surface
Feb 10, 202025 galEquipment Failure—Unpaved surface
Jan 21, 20203 galRoot Intrusion—Unpaved surface
Dec 15, 20194 galRoot Intrusion—Street/Curb and Gutter
Dec 14, 201931 galRoot Intrusion—Separate Storm Drain;Street/Curb and Gutter
Dec 5, 201939 galGrease / FOG—Separate Storm Drain;Street/Curb and Gutter;Unpaved surface
Nov 15, 2019467 galRoot Intrusion—Unpaved surface
Oct 31, 20196 galRoot Intrusion—Street/Curb and Gutter;Unpaved surface
Oct 17, 201926 galEquipment Failure—Street/Curb and Gutter
Oct 16, 20191 galRoot Intrusion—Other (specify below)
Sep 17, 201914 galEquipment Failure—Street/Curb and Gutter
Sep 16, 201912 galGrease / FOG—Street/Curb and Gutter;Unpaved surface
Sep 10, 201912 galRoot Intrusion—Unpaved surface
Aug 11, 20191 galRoot Intrusion—Street/Curb and Gutter
Aug 6, 201924 galRoot Intrusion—Separate Storm Drain;Street/Curb and Gutter
Jul 30, 201993 galRoot Intrusion—Separate Storm Drain;Street/Curb and Gutter;Unpaved surface
Jul 18, 20195 galRoot Intrusion—Street/Curb and Gutter;Unpaved surface
Jun 9, 2019147 galGrease / FOG—Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Unpaved surface
Jun 4, 20199 galRoot Intrusion—Street/Curb and Gutter
May 30, 20193 galRoot Intrusion—Street/Curb and Gutter
Apr 25, 20195 galRoot Intrusion—Unpaved surface
Apr 25, 201980 galRoot Intrusion—Street/Curb and Gutter
Apr 18, 20197 galEquipment Failure—Unpaved surface
Apr 16, 201986 galEquipment Failure—Other (specify below);Unpaved surface
Mar 17, 201950 galRoot Intrusion—Paved Surface;Separate Storm Drain;Street/Curb and Gutter
Mar 1, 201919 galRoot Intrusion—Paved Surface;Street/Curb and Gutter;Unpaved surface
Feb 15, 20192 galRoot Intrusion—Paved Surface;Street/Curb and Gutter
Feb 1, 20198 galRoot Intrusion—Unpaved surface
Jan 24, 201936 galGrease / FOG—Separate Storm Drain;Street/Curb and Gutter;Unpaved surface
Jan 7, 20196 galRoot Intrusion—Paved Surface;Street/Curb and Gutter;Unpaved surface
Dec 28, 20186 galRoot Intrusion—Paved Surface;Street/Curb and Gutter;Unpaved surface
Dec 27, 201830 galEquipment Failure—Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Unpaved surface
Dec 18, 20182 galRoot Intrusion—Paved Surface;Street/Curb and Gutter;Unpaved surface
Dec 1, 20188 galRoot Intrusion—Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Unpaved surface
Nov 15, 2018160 galGrease / FOG—Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Unpaved surface
Nov 11, 20188 galRoot Intrusion—Paved Surface;Separate Storm Drain;Street/Curb and Gutter
Nov 8, 201867 galEquipment FailureYesPaved Surface;Separate Storm Drain;Street/Curb and Gutter;Surface Water
Oct 22, 201819 galGrease / FOG—Paved Surface;Separate Storm Drain;Street/Curb and Gutter
Oct 19, 201817 galRoot Intrusion—Paved Surface;Separate Storm Drain;Street/Curb and Gutter
Sep 15, 20185 galRoot Intrusion—Paved Surface;Street/Curb and Gutter
Aug 20, 201818 galGrease / FOG—Paved Surface;Street/Curb and Gutter
Jun 13, 20185 galEquipment Failure—Street/Curb and Gutter
May 29, 20183 galEquipment Failure—Street/Curb and Gutter;Unpaved surface
May 11, 201813 galRoot Intrusion—Street/Curb and Gutter;Unpaved surface
May 6, 20188 galRoot Intrusion—Street/Curb and Gutter
May 5, 201810 galRoot Intrusion—Street/Curb and Gutter;Unpaved surface
May 2, 201813 galRoot Intrusion—Separate Storm Drain
Apr 30, 201810K galGrease / FOGYesDrainage Channel;Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Unpaved surface
Apr 24, 2018608 galEquipment Failure—Unpaved surface
Apr 11, 20188 galRoot Intrusion—Separate Storm Drain
Apr 10, 2018228 galEquipment Failure—Separate Storm Drain
Mar 28, 20185 galRoot Intrusion—Separate Storm Drain
Mar 25, 201815 galRoot Intrusion—Separate Storm Drain
Mar 5, 20185 galRoot Intrusion—Unpaved surface
Feb 25, 20181K galEquipment Failure—Separate Storm Drain
Feb 8, 201811 galRoot Intrusion—Separate Storm Drain
Feb 1, 201816 galEquipment Failure—Paved Surface;Street/Curb and Gutter
Jan 29, 20182 galRoot Intrusion—Unpaved surface
Jan 26, 20181 galRoot Intrusion—Unpaved surface
Jan 22, 201846 galRoot Intrusion—Street/Curb and Gutter;Unpaved surface
Jan 10, 201821 galEquipment Failure—Street/Curb and Gutter;Unpaved surface
Dec 3, 201753 galEquipment Failure—Separate Storm Drain
Nov 15, 20178K galRoot IntrusionYesDrainage Channel;Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Surface Water;Unpaved surface
Nov 6, 20179 galRoot Intrusion—Street/Curb and Gutter
Oct 29, 20175 galRoot Intrusion—Separate Storm Drain
Oct 18, 201711 galRoot Intrusion—Separate Storm Drain
Oct 10, 201759 galEquipment Failure—Unpaved surface
Aug 10, 20172 galEquipment Failure—Street/Curb and Gutter
Aug 10, 20171 galRoot Intrusion—Street/Curb and Gutter
Aug 4, 20171 galEquipment Failure—Street/Curb and Gutter
Jul 27, 20172 galRoot Intrusion—Street/Curb and Gutter
Jul 27, 20175 galEquipment Failure—Unpaved surface
Jul 20, 20175 galRoot Intrusion—Street/Curb and Gutter
Jul 1, 20174 galRoot Intrusion—Unpaved surface
May 30, 20172 galRoot Intrusion—Street/Curb and Gutter
May 23, 20172 galRoot Intrusion—Unpaved surface
May 19, 201711 galRoot Intrusion—Separate Storm Drain
May 8, 20174 galEquipment Failure—Unpaved surface
Apr 29, 20176 galEquipment Failure—Unpaved surface
Apr 24, 201720 galRoot Intrusion—Separate Storm Drain;Street/Curb and Gutter
Apr 21, 20172 galRoot Intrusion—Unpaved surface
Apr 4, 20173 galEquipment Failure—Separate Storm Drain;Street/Curb and Gutter
Mar 30, 201710K galGrease / FOG—Unpaved surface
Mar 17, 201712 galRoot Intrusion—Separate Storm Drain
Mar 16, 20178 galEquipment Failure—Paved Surface
Mar 12, 201727 galRoot Intrusion—Separate Storm Drain
Mar 9, 20174 galRoot Intrusion—Street/Curb and Gutter
Mar 9, 201731 galRoot Intrusion—Separate Storm Drain
Mar 7, 20177 galRoot Intrusion—Street/Curb and Gutter
Feb 23, 2017210 galRoot Intrusion—Street/Curb and Gutter;Unpaved surface
Feb 6, 20175 galEquipment Failure—Paved Surface
Feb 2, 20171 galEquipment Failure—Street/Curb and Gutter
Jan 31, 20172 galRoot Intrusion—Separate Storm Drain
Jan 30, 20172 galRoot Intrusion—Street/Curb and Gutter
Jan 17, 20174 galGrease / FOG—Separate Storm Drain;Street/Curb and Gutter
Dec 27, 20161 galEquipment Failure—Unpaved surface
Dec 27, 20163 galEquipment Failure—Street/Curb and Gutter
Dec 22, 20164 galEquipment Failure—Street/Curb and Gutter
Dec 21, 20162 galRoot Intrusion—Unpaved surface
Dec 4, 20165 galEquipment Failure—Separate Storm Drain
Dec 1, 201610 galRoot Intrusion—Separate Storm Drain
Nov 28, 20161 galRoot Intrusion—Street/Curb and Gutter
Nov 17, 2016226 galEquipment Failure—Separate Storm Drain
Oct 19, 201623 galRoot Intrusion—Separate Storm Drain
Sep 19, 20169 galOther / Unknown—Unpaved surface
Sep 16, 2016273 galEquipment Failure—Unpaved surface
Sep 11, 201612 galRoot Intrusion—Street/Curb and Gutter
Sep 8, 20163 galEquipment Failure—Paved Surface
Aug 31, 20163 galEquipment Failure—Street/Curb and Gutter
Aug 25, 20163 galEquipment Failure—Unpaved surface
Jul 15, 201612 galEquipment Failure—Separate Storm Drain;Street/Curb and Gutter
Jul 13, 20162 galGrease / FOG—Unpaved surface
Jun 28, 201633 galEquipment Failure—Separate Storm Drain;Street/Curb and Gutter
Jun 13, 20166 galEquipment Failure—Building or Structure;Paved Surface;Separate Storm Drain
May 11, 201626 galRoot Intrusion—Building or Structure;Unpaved surface
Apr 25, 2016133 galOther / Unknown—Separate Storm Drain
Apr 14, 2016855 galEquipment Failure—Separate Storm Drain
Apr 11, 201625 galEquipment Failure—Street/Curb and Gutter
Apr 6, 201644 galGrease / FOG—Paved Surface
Mar 19, 20163 galEquipment Failure—Street/Curb and Gutter
Mar 14, 20162 galGrease / FOG—Street/Curb and Gutter
Feb 5, 201680 galGrease / FOG—Separate Storm Drain
Feb 4, 201613 galEquipment Failure—Separate Storm Drain;Street/Curb and Gutter
Jan 11, 201611 galEquipment Failure—Separate Storm Drain
Jan 11, 201616 galOther / Unknown—Separate Storm Drain
Dec 28, 201550 galEquipment Failure—Separate Storm Drain
Dec 28, 2015100 galEquipment Failure—Separate Storm Drain
Dec 10, 201520 galEquipment Failure—Street/Curb and Gutter
Nov 29, 201521 galEquipment Failure—Other (specify below)
Nov 22, 201526 galEquipment Failure—Paved Surface;Street/Curb and Gutter
Nov 21, 201522 galRoot Intrusion—Paved Surface;Separate Storm Drain;Street/Curb and Gutter
Nov 12, 201523 galRoot Intrusion—Street/Curb and Gutter
Nov 3, 2015134 galRoot Intrusion—Paved Surface;Separate Storm Drain;Street/Curb and Gutter
Oct 29, 201584 galRoot Intrusion—Separate Storm Drain;Street/Curb and Gutter

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