All rankings
California · California (CIWQS)
Pismo Beach City
D
Frequently reaches water
Reported events
38
Total volume
62K gal
Reached waterways
18 (47%)
Reporting since
2007
What caused the overflows
Equipment Failure
22
Other / Unknown
8
Grease / FOG
5
Root Intrusion
1
Rainfall / Flooding
1
Capacity Issue
1
Reported overflow events (showing 38 of 38)
| Date | Volume | Cause | Reached water | Receiving water |
|---|---|---|---|---|
| Aug 16, 2025 | 240 gal | Grease / FOG | — | — |
| Jul 24, 2025 | 250 gal | Root Intrusion | — | — |
| Aug 7, 2024 | 250 gal | Equipment Failure | — | none |
| Jul 19, 2024 | 120 gal | Equipment Failure | Yes | Pacific Ocean |
| Jul 3, 2024 | 1K gal | Equipment Failure | Yes | Pacific Ocean |
| Oct 1, 2023 | 2K gal | Other / Unknown | — | — |
| Jul 24, 2023 | 2K gal | Equipment Failure | — | none |
| Jul 3, 2023 | 600 gal | Equipment Failure | Yes | Pacific Ocean |
| Dec 19, 2022 | 50 gal | Equipment Failure | Yes | Beach |
| Jul 5, 2021 | 740 gal | Equipment Failure | — | Other (specify below) |
| Jun 6, 2021 | 520 gal | Other / Unknown | Yes | Beach |
| Mar 10, 2020 | 8K gal | Rainfall / Flooding | Yes | Beach |
| Mar 10, 2020 | 2K gal | Equipment Failure | Yes | Beach;Drainage Channel;Surface Water |
| Jan 13, 2020 | 200 gal | Equipment Failure | Yes | Surface Water |
| Aug 29, 2018 | 450 gal | Equipment Failure | — | Unpaved surface |
| Jan 20, 2017 | 18K gal | Other / Unknown | Yes | Beach |
| Aug 12, 2016 | 900 gal | Equipment Failure | — | Separate Storm Drain |
| Aug 2, 2016 | 800 gal | Equipment Failure | Yes | Surface Water |
| Oct 5, 2015 | 100 gal | Equipment Failure | — | Street/Curb and Gutter |
| Oct 2, 2015 | 300 gal | Equipment Failure | — | Street/Curb and Gutter |
| Sep 23, 2015 | 1K gal | Equipment Failure | — | Separate Storm Drain;Street/Curb and Gutter |
| Nov 10, 2014 | 500 gal | Grease / FOG | — | Paved Surface;Street/Curb and Gutter |
| Nov 8, 2014 | 240 gal | Other / Unknown | — | Separate Storm Drain |
| Oct 7, 2014 | 20 gal | Other / Unknown | — | Paved Surface |
| Jul 3, 2014 | 10 gal | Equipment Failure | — | Separate Storm Drain;Street/Curb and Gutter |
| Apr 17, 2014 | 750 gal | Other / Unknown | Yes | Drainage Channel |
| Feb 24, 2014 | 50 gal | Equipment Failure | — | Street/Curb and Gutter |
| Jan 28, 2014 | 450 gal | Equipment Failure | — | Unpaved surface |
| Jul 24, 2012 | 600 gal | Other / Unknown | Yes | Beach |
| Oct 14, 2011 | 6K gal | Equipment Failure | Yes | Surface water |
| Dec 19, 2010 | 750 gal | Capacity Issue | Yes | Beach;Separate storm drain;Street/curb and gutter;Surface water |
| Nov 7, 2010 | 450 gal | Other / Unknown | Yes | Unpaved surface |
| Jan 19, 2010 | 700 gal | Grease / FOG | Yes | Beach |
| Apr 2, 2009 | 500 gal | Equipment Failure | — | Unpaved surface |
| Jan 7, 2009 | 1K gal | Grease / FOG | — | Beach |
| May 24, 2008 | 175 gal | Grease / FOG | Yes | Beach;Surface water |
| Mar 29, 2008 | 840 gal | Equipment Failure | — | Street/curb and gutter;Unpaved surface |
| Jul 19, 2007 | 10K gal | Equipment Failure | Yes | Surface water |
Source: California (CIWQS). Volumes are utility-reported estimates. Some events lack precise coordinates or volumes.