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169 datasets

Water Quality Data

Published by: California Department of Water Resources
Last updated: Monday, April 6, 2026
File types: CSV

The California Department of Water Resources (DWR) discrete (vs. continuous) water quality datasets contains DWR-collected, current and historical, ch...

Ground Water - Water Quality Results

Published by: California State Water Resources Control Board
Last updated: Thursday, April 2, 2026
File types: EXCEL (XLSX), CSV

Groundwater quality data and related groundwater well information available on the page was queried from the GAMA Groundwater information system (**[G...

Drinking Water - Laboratory Water Quality Results

Published by: California State Water Resources Control Board
Last updated: Tuesday, October 29, 2019
File types: PDF

The Division of Drinking Water requires laboratories to submit water quality data directly. The data is received, and published twice monthly on the D...

Surface Water - Water Quality Regulatory Information

Published by: California State Water Resources Control Board
Last updated: Tuesday, March 24, 2026
File types: CSV, PDF

This data set lists active and historical enforcement actions records that are stored in the [California Integrated Water Quality System](https://www....

Ground Water - Water Quality Regulatory Information

Published by: California State Water Resources Control Board
Last updated: Monday, April 6, 2026
File types: CSV

GeoTracker is the Water Boards' data management system for sites that impact, or have the potential to impact, water quality in California, with empha...

State Water Project Routine Water Quality Monitoring

Published by: California Department of Water Resources
Last updated: Monday, April 6, 2026
File types: CSV, LINK, PDF

The California State Water Project (SWP) is one of the nation’s largest water conveyance projects. Its geographic extent stretches from Sierra Nevada ...

Surface Water - Water Quality Regulated Facility Information

Published by: California State Water Resources Control Board
Last updated: Tuesday, March 24, 2026
File types: CSV, XLSX, PDF

Information regarding site visits of facilities that discharge wastewater, from the [California Integrated Water Quality System](https://www.waterboar...

DCP Water Quality and Temperature

Published by: California Department of Water Resources
Last updated: Monday, April 6, 2026
File types: ZIP

The DCP Water Quality and Temperature Study is one of many relicensing documents for the Devil Canyon Project (DCP) Hydropower Project Number 14797. T...

SSWP Water Quality and Temperature

Published by: California Department of Water Resources
Last updated: Monday, April 6, 2026
File types: ZIP

The SSWP Water Quality and Temperature Study is one of many relicensing documents for the South SWP (SSWP) Hydropower Project Number 2426. The Califor...

Surface Water - 2017 California Water Quality Status Report

Published by: California State Water Resources Control Board
Last updated: Wednesday, October 23, 2019
File types: ZIP

The California Water Boards’ Water Data Center is proud to present the CA Water Quality Status Report. This report is an annual data-driven snapshot ...