Surface Water - Indicator Bacteria Results
Indicator bacteria data from the California Environmental Data Exchange Network (CEDEN) and BeachWatch databases. Results include E. coli, enterococci, fecal coliforms, and total coliforms. There is some overlap with the CEDEN Water Chemistry dataset (https://data.ca.gov/dataset/surface-water-chemistry-results). Both datasets draw from the same source, but the resources here are updated more frequently to support the Safe to Swim map on the Water Boards My Water Quality portal (https://mywaterquality.ca.gov/safe_to_swim/index.html).
Data files
| Data title and description | Access data | File details | Last updated |
|---|---|---|---|
Safe to Swim 2020-present | Download | CSV 223.23 MB | 02/10/22 |
Safe to Swim 2010-2020 | Download | CSV 883.33 MB | 02/10/22 |
Safe to Swim 1969-2010 | Download | CSV 1.55 GB | 02/10/22 |
Monitoring sites for Safe to Swim | Download | CSV 517.35 KB | 02/10/22 |
Safe to Swim Results/Geomeans before 2010 | Download | CSV 644.43 MB | 02/25/25 |
Safe to Swim Results/Geomeans 2010-2020 | Download | CSV 584.74 MB | 02/25/25 |
Safe to Swim Results/Geomeans 2020 to present | Download | CSV 267.26 MB | 02/25/25 |
Supporting files
| Data title and description | Access data | File details | Last updated |
|---|---|---|---|
Data Dictionary of CEDEN Water Chemistry Data | PDF | 08/10/19 |