Water
Themes include well water, water quality, wastewater, watershed, storm water, drinking water.Popular datasets
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496 datasets
Drinking Water - SAFER Dashboard Failing and At-Risk Drinking Water Systems
- Published by: California State Water Resources Control Board
- Last updated: Saturday, March 14, 2026
- File types: PDF, EXCEL (XLSX), CSV
The Division of Drinking Water (DDW) identifies Failing and At-Risk community water systems and K-12 non-transient, non-community schools. This inform...
Periodic Groundwater Level Measurements
- Published by: California Department of Water Resources
- Last updated: Sunday, March 15, 2026
- File types: CSV, ZIP, TXT
The DWR Periodic Groundwater Levels dataset contains seasonal and long-term groundwater level measurements collected by the Department of Water Resour...
CA Urban Retail Water System Water Loss Annual Loss Audit Data
- Published by: California Department of Water Resources
- Last updated: Sunday, March 15, 2026
- File types: CSV
This dataset contains annual validated water loss audit reports submitted to the Department of Water Resources by California urban retail water suppli...
DWR Continuous Data Download Links
- Published by: California Department of Water Resources
- Last updated: Sunday, March 15, 2026
- File types: CSV
Stations and a table of download links for time-series data, from DWR's continuous environmental monitoring database. For more information, see DWR's...
Surface Water - Freshwater Harmful Algal Blooms
- Published by: California State Water Resources Control Board
- Last updated: Saturday, March 14, 2026
- File types: PDF, CSV
Freshwater harmful algal bloom (HAB) data from the Freshwater Harmful Algal Bloom (FHAB) data system. The FHAB data system is the California State Wat...
California Population Trends by Geography
- Published by: California Department of Water Resources
- Last updated: Sunday, March 15, 2026
- File types: CSV, WEBSITE
The datasets provide population estimate trends from 1998 to the current year for each of California’s 58 counties, further disaggregated by Detailed ...
SWAMP Data Dashboard
- Published by: California State Water Resources Control Board
- Last updated: Thursday, March 12, 2026
- File types: PDF, CSV
This dataset supports the [SWAMP Data Dashboard](https://gispublic.waterboards.ca.gov/swamp-data/), a public-facing tool developed by the [Surface Wat...
Beach Advisories (Postings and Closures) and Beach Water Quality Monitoring
- Published by: California State Water Resources Control Board
- Last updated: Thursday, March 12, 2026
- File types: PDF, CSV, ZIP
One of California's biggest industries is tourism, and beaches are a significant tourist attraction as well as being an integral part of California’s ...
Surface Water - Fecal Indicator Bacteria Monitoring Results
- Published by: California State Water Resources Control Board
- Last updated: Thursday, March 12, 2026
- File types: CSV, PDF
This dataset contains fecal indicator bacteria (FIB) monitoring results collected from surface waters across California. It includes results for _Esch...
California's Groundwater Update 2025 (Bulletin 118)
- Published by: California Department of Water Resources
- Last updated: Saturday, March 14, 2026
- File types: PDF, XLS, URL, .ZIP
California's Groundwater: Bulletin 118 Updates (CalGW Updates) are a continuing series of California's primary technical publications on groundwater r...