All rankings
California · California (CIWQS)
Pittsburg City
A
Rarely reaches water
Reported events
385
Total volume
65K gal
Reached waterways
8 (2%)
Reporting since
2007
What caused the overflows
Root Intrusion
168
Equipment Failure
84
Grease / FOG
78
Other / Unknown
53
Rainfall / Flooding
2
Reported overflow events (showing 200 of 385)
| Date | Volume | Cause | Reached water | Receiving water |
|---|---|---|---|---|
| Jun 16, 2026 | 123 gal | Grease / FOG | — | — |
| Oct 19, 2025 | 178 gal | Grease / FOG | — | — |
| Sep 2, 2025 | 2K gal | Grease / FOG | — | — |
| Jan 23, 2024 | 2K gal | Grease / FOG | — | — |
| Jan 23, 2024 | 2K gal | Grease / FOG | — | — |
| Dec 13, 2023 | 63 gal | Equipment Failure | — | — |
| Nov 27, 2023 | 2K gal | Grease / FOG | — | — |
| Nov 27, 2023 | 2K gal | Grease / FOG | — | — |
| Sep 21, 2023 | 190 gal | Grease / FOG | — | — |
| Sep 12, 2023 | 110 gal | Grease / FOG | — | — |
| May 15, 2023 | 10 gal | Equipment Failure | — | Street/Curb and Gutter |
| Apr 4, 2023 | 5 gal | Grease / FOG | — | Unpaved surface |
| Mar 3, 2023 | 5 gal | Equipment Failure | — | Paved Surface |
| Feb 28, 2023 | 5 gal | Equipment Failure | — | Unpaved surface |
| Jan 21, 2023 | 10 gal | Root Intrusion | — | Unpaved surface |
| Jan 21, 2023 | 200 gal | Grease / FOG | — | Paved Surface |
| Jan 2, 2023 | 1 gal | Root Intrusion | — | Unpaved surface |
| Dec 31, 2022 | 2K gal | Rainfall / Flooding | — | Paved Surface |
| Dec 27, 2022 | 5 gal | Equipment Failure | — | Paved Surface |
| Dec 25, 2022 | 2 gal | Equipment Failure | — | Paved Surface |
| Oct 30, 2022 | 5 gal | Root Intrusion | — | Unpaved surface |
| Oct 25, 2022 | 10 gal | Equipment Failure | — | Unpaved surface |
| Oct 3, 2022 | 30 gal | Root Intrusion | — | Street/Curb and Gutter |
| Sep 12, 2022 | 20 gal | Grease / FOG | — | Street/Curb and Gutter |
| Aug 31, 2022 | 5 gal | Equipment Failure | — | Unpaved surface |
| Aug 9, 2022 | 2 gal | Grease / FOG | — | Paved Surface |
| Jul 22, 2022 | 10 gal | Equipment Failure | — | Street/Curb and Gutter |
| Jul 18, 2022 | 10 gal | Equipment Failure | — | Paved Surface |
| Jun 18, 2022 | 35 gal | Equipment Failure | — | Unpaved surface |
| May 26, 2022 | 5 gal | Equipment Failure | — | Paved Surface |
| May 18, 2022 | 1 gal | Root Intrusion | — | Unpaved surface |
| Apr 27, 2022 | 100 gal | Equipment Failure | — | Paved Surface |
| Apr 26, 2022 | 5K gal | Root Intrusion | — | Unpaved surface |
| Apr 25, 2022 | 10 gal | Equipment Failure | — | Unpaved surface |
| Apr 21, 2022 | 15 gal | Grease / FOG | — | Street/Curb and Gutter |
| Apr 5, 2022 | 50 gal | Equipment Failure | — | Street/Curb and Gutter |
| Mar 23, 2022 | 5 gal | Root Intrusion | — | Paved Surface |
| Mar 23, 2022 | 10 gal | Grease / FOG | — | Street/Curb and Gutter |
| Feb 17, 2022 | 4 gal | Grease / FOG | — | Paved Surface |
| Feb 15, 2022 | 275 gal | Grease / FOG | — | Unpaved surface |
| Jan 30, 2022 | 1 gal | Root Intrusion | — | Paved Surface |
| Jan 28, 2022 | 2 gal | Root Intrusion | — | Paved Surface |
| Jan 27, 2022 | 10 gal | Root Intrusion | — | Street/Curb and Gutter |
| Jan 3, 2022 | 10 gal | Root Intrusion | — | Unpaved surface |
| Dec 24, 2021 | 5 gal | Root Intrusion | — | Paved Surface |
| Nov 28, 2021 | 1 gal | Root Intrusion | — | Unpaved surface |
| Nov 8, 2021 | 2 gal | Equipment Failure | — | Unpaved surface |
| Oct 28, 2021 | 2 gal | Equipment Failure | — | Unpaved surface |
| Oct 21, 2021 | 500 gal | Root Intrusion | — | Street/Curb and Gutter |
| Oct 2, 2021 | 10 gal | Equipment Failure | — | Street/Curb and Gutter |
| Sep 23, 2021 | 10 gal | Equipment Failure | — | Unpaved surface |
| Sep 13, 2021 | 10 gal | Equipment Failure | — | Street/Curb and Gutter |
| Sep 3, 2021 | 10 gal | Grease / FOG | — | Street/Curb and Gutter |
| Aug 23, 2021 | 15 gal | Root Intrusion | — | Street/Curb and Gutter;Unpaved surface |
| Aug 9, 2021 | 1 gal | Equipment Failure | — | Unpaved surface |
| Aug 1, 2021 | 100 gal | Grease / FOG | — | Street/Curb and Gutter |
| Jul 30, 2021 | 3 gal | Grease / FOG | — | Paved Surface |
| Jul 19, 2021 | 15 gal | Equipment Failure | — | Paved Surface;Street/Curb and Gutter |
| Jul 11, 2021 | 2 gal | Equipment Failure | — | Paved Surface;Street/Curb and Gutter |
| May 20, 2021 | 96 gal | Root Intrusion | — | Street/Curb and Gutter |
| Apr 17, 2021 | 912 gal | Grease / FOG | — | Paved Surface;Street/Curb and Gutter |
| Mar 16, 2021 | 913 gal | Equipment Failure | — | Unpaved surface |
| Mar 16, 2021 | 5 gal | Root Intrusion | — | Paved Surface |
| Feb 22, 2021 | 5 gal | Root Intrusion | — | Unpaved surface |
| Jan 15, 2021 | 10 gal | Equipment Failure | — | Unpaved surface |
| Dec 30, 2020 | 3 gal | Equipment Failure | — | Paved Surface |
| Dec 29, 2020 | 3 gal | Root Intrusion | — | Street/Curb and Gutter;Unpaved surface |
| Dec 22, 2020 | 8 gal | Root Intrusion | — | Unpaved surface |
| Dec 16, 2020 | 1 gal | Root Intrusion | — | Unpaved surface |
| Dec 8, 2020 | 5 gal | Equipment Failure | — | Street/Curb and Gutter |
| Oct 23, 2020 | 500 gal | Grease / FOG | — | Separate Storm Drain;Street/Curb and Gutter |
| Oct 2, 2020 | 10 gal | Root Intrusion | — | Street/Curb and Gutter |
| Aug 27, 2020 | 5 gal | Equipment Failure | — | Paved Surface |
| Aug 18, 2020 | 5 gal | Grease / FOG | — | Unpaved surface |
| Aug 10, 2020 | 10 gal | Equipment Failure | — | Unpaved surface |
| Aug 2, 2020 | 5 gal | Grease / FOG | — | Unpaved surface |
| Jul 27, 2020 | 15 gal | Equipment Failure | — | Paved Surface |
| Jul 17, 2020 | 10 gal | Equipment Failure | — | Unpaved surface |
| Jun 29, 2020 | 5 gal | Root Intrusion | — | Paved Surface |
| Jun 1, 2020 | 3 gal | Other / Unknown | — | Paved Surface |
| Apr 20, 2020 | 10 gal | Equipment Failure | — | Unpaved surface |
| Apr 8, 2020 | 10 gal | Root Intrusion | — | Paved Surface;Street/Curb and Gutter |
| Apr 8, 2020 | 3 gal | Root Intrusion | — | Unpaved surface |
| Apr 7, 2020 | 2 gal | Equipment Failure | — | Paved Surface;Street/Curb and Gutter |
| Feb 22, 2020 | 5 gal | Root Intrusion | — | Unpaved surface |
| Feb 6, 2020 | 10 gal | Root Intrusion | — | Street/Curb and Gutter;Unpaved surface |
| Feb 4, 2020 | 20 gal | Grease / FOG | — | Street/Curb and Gutter |
| Jan 30, 2020 | 15 gal | Root Intrusion | — | Paved Surface;Street/Curb and Gutter |
| Jan 27, 2020 | 10 gal | Equipment Failure | — | Unpaved surface |
| Jan 24, 2020 | 1 gal | Root Intrusion | — | Paved Surface;Street/Curb and Gutter |
| Jan 21, 2020 | 10 gal | Equipment Failure | — | Street/Curb and Gutter;Unpaved surface |
| Jan 15, 2020 | 20 gal | Grease / FOG | — | Street/Curb and Gutter;Unpaved surface |
| Dec 10, 2019 | 55 gal | Grease / FOG | — | Paved Surface;Unpaved surface |
| Dec 6, 2019 | 32 gal | Grease / FOG | — | Street/Curb and Gutter |
| Dec 5, 2019 | 900 gal | Grease / FOG | — | Paved Surface;Street/Curb and Gutter |
| Nov 25, 2019 | 5 gal | Equipment Failure | — | Street/Curb and Gutter |
| Nov 18, 2019 | 30 gal | Grease / FOG | — | Paved Surface |
| Oct 17, 2019 | 5 gal | Other / Unknown | — | Unpaved surface |
| Oct 11, 2019 | 3 gal | Root Intrusion | — | Street/Curb and Gutter |
| Oct 6, 2019 | 1 gal | Equipment Failure | — | Street/Curb and Gutter |
| Sep 18, 2019 | 3 gal | Root Intrusion | — | Unpaved surface |
| Sep 10, 2019 | 5 gal | Equipment Failure | — | Street/Curb and Gutter |
| Aug 30, 2019 | 3 gal | Other / Unknown | — | Other (specify below) |
| May 29, 2019 | 3 gal | Root Intrusion | — | Street/Curb and Gutter;Unpaved surface |
| May 20, 2019 | 20 gal | Root Intrusion | — | Street/Curb and Gutter;Unpaved surface |
| May 16, 2019 | 20 gal | Root Intrusion | — | Street/Curb and Gutter;Unpaved surface |
| Apr 25, 2019 | 2 gal | Root Intrusion | — | Unpaved surface |
| Apr 14, 2019 | 32 gal | Root Intrusion | — | Street/Curb and Gutter;Unpaved surface |
| Apr 8, 2019 | 1 gal | Equipment Failure | — | Unpaved surface |
| Mar 29, 2019 | 25 gal | Equipment Failure | — | Unpaved surface |
| Mar 19, 2019 | 2 gal | Root Intrusion | — | Paved Surface |
| Mar 16, 2019 | 25 gal | Grease / FOG | — | Other (specify below) |
| Mar 4, 2019 | 1 gal | Root Intrusion | — | Unpaved surface |
| Feb 24, 2019 | 5 gal | Root Intrusion | — | Street/Curb and Gutter;Unpaved surface |
| Feb 15, 2019 | 2 gal | Equipment Failure | — | Unpaved surface |
| Feb 11, 2019 | 10 gal | Root Intrusion | — | Unpaved surface |
| Feb 6, 2019 | 5 gal | Equipment Failure | — | Unpaved surface |
| Jan 23, 2019 | 2 gal | Equipment Failure | — | Street/Curb and Gutter;Unpaved surface |
| Jan 8, 2019 | 2 gal | Equipment Failure | — | Street/Curb and Gutter;Unpaved surface |
| Nov 24, 2018 | 32 gal | Grease / FOG | — | Separate Storm Drain;Street/Curb and Gutter |
| Oct 25, 2018 | 15 gal | Equipment Failure | — | Paved Surface |
| Oct 15, 2018 | 10 gal | Root Intrusion | — | Paved Surface;Unpaved surface |
| Sep 30, 2018 | 5 gal | Root Intrusion | — | Street/Curb and Gutter;Unpaved surface |
| Sep 26, 2018 | 7 gal | Equipment Failure | — | Street/Curb and Gutter |
| Sep 24, 2018 | 10 gal | Equipment Failure | — | Unpaved surface |
| Jul 30, 2018 | 10 gal | Other / Unknown | — | Paved Surface;Unpaved surface |
| Jul 12, 2018 | 15 gal | Root Intrusion | — | Paved Surface;Street/Curb and Gutter;Unpaved surface |
| May 23, 2018 | 2 gal | Root Intrusion | — | Paved Surface;Unpaved surface |
| May 15, 2018 | 1 gal | Root Intrusion | — | Unpaved surface |
| Apr 25, 2018 | 1 gal | Root Intrusion | — | Unpaved surface |
| Mar 27, 2018 | 2 gal | Equipment Failure | — | Paved Surface |
| Mar 19, 2018 | 5 gal | Root Intrusion | — | Street/Curb and Gutter;Unpaved surface |
| Mar 12, 2018 | 3 gal | Root Intrusion | — | Paved Surface;Unpaved surface |
| Feb 27, 2018 | 10 gal | Root Intrusion | — | Paved Surface;Unpaved surface |
| Feb 22, 2018 | 2 gal | Root Intrusion | — | Unpaved surface |
| Feb 6, 2018 | 10 gal | Root Intrusion | — | Street/Curb and Gutter;Unpaved surface |
| Feb 5, 2018 | 25 gal | Root Intrusion | — | Street/Curb and Gutter;Unpaved surface |
| Jan 28, 2018 | 20 gal | Root Intrusion | — | Street/Curb and Gutter;Unpaved surface |
| Jan 26, 2018 | 645 gal | Equipment Failure | — | Drainage Channel;Unpaved surface |
| Jan 10, 2018 | 15 gal | Equipment Failure | — | Paved Surface |
| Jan 6, 2018 | 1 gal | Equipment Failure | — | Unpaved surface |
| Dec 28, 2017 | 20 gal | Grease / FOG | — | Street/Curb and Gutter |
| Dec 27, 2017 | 2 gal | Grease / FOG | — | Building or Structure |
| Dec 26, 2017 | 5 gal | Root Intrusion | — | Paved Surface;Street/Curb and Gutter |
| Dec 21, 2017 | 2 gal | Equipment Failure | — | Unpaved surface |
| Dec 17, 2017 | 50 gal | Grease / FOG | — | Separate Storm Drain;Street/Curb and Gutter |
| Dec 2, 2017 | 1 gal | Root Intrusion | — | Paved Surface;Unpaved surface |
| Nov 27, 2017 | 10 gal | Root Intrusion | — | Unpaved surface |
| Nov 21, 2017 | 55 gal | Other / Unknown | — | Separate Storm Drain;Street/Curb and Gutter;Unpaved surface |
| Nov 7, 2017 | 32 gal | Equipment Failure | — | Street/Curb and Gutter;Unpaved surface |
| Sep 18, 2017 | 1 gal | Root Intrusion | — | Unpaved surface |
| Aug 21, 2017 | 3 gal | Root Intrusion | — | Paved Surface |
| Aug 10, 2017 | 10 gal | Grease / FOG | — | Paved Surface;Unpaved surface |
| Aug 10, 2017 | 10 gal | Grease / FOG | — | Paved Surface;Unpaved surface |
| Jun 9, 2017 | 1 gal | Root Intrusion | — | Unpaved surface |
| Jun 8, 2017 | 2 gal | Root Intrusion | — | Unpaved surface |
| Apr 13, 2017 | 10 gal | Root Intrusion | — | Unpaved surface |
| Apr 2, 2017 | 2 gal | Root Intrusion | — | Unpaved surface |
| Feb 27, 2017 | 25 gal | Equipment Failure | — | Separate Storm Drain;Street/Curb and Gutter;Unpaved surface |
| Feb 3, 2017 | 2 gal | Root Intrusion | — | Paved Surface |
| Feb 2, 2017 | 1K gal | Equipment Failure | Yes | Separate Storm Drain;Street/Curb and Gutter;Surface Water |
| Dec 29, 2016 | 10 gal | Root Intrusion | — | Paved Surface |
| Oct 25, 2016 | 2 gal | Root Intrusion | — | Paved Surface;Street/Curb and Gutter |
| Oct 4, 2016 | 15 gal | Other / Unknown | — | Street/Curb and Gutter;Unpaved surface |
| Sep 20, 2016 | 5 gal | Grease / FOG | — | Unpaved surface |
| Sep 15, 2016 | 5 gal | Root Intrusion | — | Unpaved surface |
| Aug 30, 2016 | 10 gal | Equipment Failure | — | Unpaved surface |
| Aug 19, 2016 | 4 gal | Grease / FOG | — | Street/Curb and Gutter;Unpaved surface |
| Aug 17, 2016 | 2 gal | Root Intrusion | — | Street/Curb and Gutter;Unpaved surface |
| Aug 12, 2016 | 4 gal | Root Intrusion | — | Unpaved surface |
| Jul 28, 2016 | 5 gal | Root Intrusion | — | Street/Curb and Gutter |
| Jul 2, 2016 | 5 gal | Root Intrusion | — | Unpaved surface |
| Jun 20, 2016 | 10 gal | Root Intrusion | — | Unpaved surface |
| Jun 9, 2016 | 25 gal | Grease / FOG | — | Paved Surface;Street/Curb and Gutter |
| May 17, 2016 | 20 gal | Grease / FOG | — | Paved Surface |
| May 7, 2016 | 2 gal | Equipment Failure | — | Paved Surface;Unpaved surface |
| May 5, 2016 | 5 gal | Equipment Failure | — | Unpaved surface |
| Apr 11, 2016 | 1 gal | Root Intrusion | — | Unpaved surface |
| Apr 3, 2016 | 10 gal | Root Intrusion | — | Street/Curb and Gutter;Unpaved surface |
| Mar 21, 2016 | 25 gal | Root Intrusion | — | Unpaved surface |
| Mar 17, 2016 | 20 gal | Root Intrusion | — | Street/Curb and Gutter;Unpaved surface |
| Mar 8, 2016 | 1K gal | Grease / FOG | Yes | Drainage Channel;Separate Storm Drain;Street/Curb and Gutter;Surface Water;Unpaved surface |
| Feb 22, 2016 | 5 gal | Grease / FOG | — | Paved Surface |
| Feb 16, 2016 | 5 gal | Root Intrusion | — | Building or Structure |
| Feb 13, 2016 | 15 gal | Root Intrusion | — | Street/Curb and Gutter |
| Feb 8, 2016 | 1 gal | Grease / FOG | — | Paved Surface |
| Feb 2, 2016 | 383 gal | Root Intrusion | — | Street/Curb and Gutter |
| Jan 30, 2016 | 15 gal | Root Intrusion | — | Paved Surface;Street/Curb and Gutter |
| Jan 21, 2016 | 32 gal | Root Intrusion | — | Street/Curb and Gutter;Unpaved surface |
| Jan 15, 2016 | 3 gal | Grease / FOG | — | Paved Surface;Unpaved surface |
| Dec 8, 2015 | 5 gal | Root Intrusion | — | Unpaved surface |
| Oct 30, 2015 | 239 gal | Grease / FOG | — | Paved Surface;Separate Storm Drain;Street/Curb and Gutter;Unpaved surface |
| Oct 20, 2015 | 50 gal | Root Intrusion | — | Paved Surface;Unpaved surface |
| Sep 30, 2015 | 32 gal | Root Intrusion | — | Paved Surface;Street/Curb and Gutter |
| Sep 25, 2015 | 1 gal | Other / Unknown | — | Unpaved surface |
| Aug 12, 2015 | 10 gal | Root Intrusion | — | Unpaved surface |
| May 15, 2015 | 2 gal | Root Intrusion | — | Paved Surface |
| May 12, 2015 | 5 gal | Root Intrusion | — | Paved Surface;Unpaved surface |
| Apr 30, 2015 | 360 gal | Other / Unknown | — | Separate Storm Drain;Street/Curb and Gutter |
| Apr 18, 2015 | 55 gal | Grease / FOG | — | Paved Surface;Street/Curb and Gutter |
Source: California (CIWQS). Volumes are utility-reported estimates. Some events lack precise coordinates or volumes.