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Search Water datasets

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...