,The is a curated dataset of information for all public water systems (PWS) in California, including the name, location and some general informaiton for each PWS. The source of the data https://sdwis.waterboards.ca.gov/PDWW/ is a public web portal to view public water systems (PWS) location, facilities, sources, and samples.,

,Monthly reports of the larger urban water suppliers in California on water production and conservation activities, from the California State Water Resources Control Board's **[Conservation Portal](http://www.waterboards.ca.gov/water_issues/programs/conservation_portal/conservation_reporting.shtml)**.

,The Division of Drinking Water requires laboratories to submit water quality data directly. The data is received, and published twice monthly on the Division's water quality portal. The resource here now is just a data dictionary for the laboratory analysis data available from that portal, and in the near future we plan to add curated data resources that include laboratory water quality results.,

This dataset looks at all aspects of storm water management in California as managed and regulated by the State Water Resources Control Board, from the **[Stormwater Multiple Application and Report Tracking System (SMARTS)](https://smarts.waterboards.ca.gov)**.

,Groundwater quality data and related groundwater well information available on the page was queried from the GAMA Groundwater information system (**[GAMA GIS](https://gamagroundwater.waterboards.ca.gov/gama/datadownload)**). Data provided represent a collection of groundwater quality results from various federal, state, and local groundwater sources. Results have been filtered to only represent untreated sampling results for the purpose of characterizing ambient conditions. Data have been standardized across multiple data sets including chemical names and units. Standardization has not been performed for chemical result modifier and others (although we are working currently to standardize most fields). Chemicals that have been standardized are included in the data sets. Therefore, other chemicals have been analyzed for but are not included in GAMA downloads. Groundwater samples have been collected from well types including domestic, irrigation, monitoring, municipal. Wells that cannot accurately be attributed to a category are labeled as "water supply, other". For additional information regarding the GAMA GIS data system please reference our **[factsheet](https://www.waterboards.ca.gov/publications_forms/publications/factsheets/docs/gama_gis_factsheet.pdf)**.,

This dataset includes the number of service connections, categorized by type and metering status, as submitted by public water systems via the electronic annual report (eAR) in sections 3 or 4 for calendar years 2013 through 2023 reporting year. It also includes facility public information details from the SDWIS database as metadata associated to the dataset. “Service connection” means the point of connection between the customer’s piping or constructed conveyance, and the water system’s meter, service pipe, or constructed conveyance. “Public water system” means a system for the provision of water for human consumption through pipes or other constructed conveyances that has 15 or more service connections or regularly serves at least 25 individuals daily at least 60 days out of the year. Public water systems submit critical water system information intended to assess the status of compliance with specific regulatory requirements such as source water capacity, provides updated contact and inventory information (such as population and number of service connections) to the to the Division of Drinking Water using the electronic Annual Report (eAR) submission process. **The data in the datasets below are electronically reported annually by public water systems to the State Water Resources Control Board - Division of Drinking Water. The data contained herein are public water system reported data and do not include a determination of accuracy or validity by regulatory staff. For data validated by regulatory staff, refer to the public water system inventory dataset from the Safe Drinking Water Information System (SDWIS), available at: https://data.ca.gov/dataset/drinking-water-public-water-system-information.** For more information about the eAR, visit the eAR Home Page: https://www.waterboards.ca.gov/drinking_water/certlic/drinkingwater/ear.html

,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 of the Water Board's water quality and environmental data. This inaugural version of the report is based solely on the surface water datasets available via the [Surface Water Ambient Monitoring Program (SWAMP)] (http://www.waterboards.ca.gov/swamp/) and in future years we hope to expand this to include the groundwater, drinking water and water resource datasets available in our state. Our goal is to use data to inform both data storytelling (as in this inaugural report) and water quality indicators, including watershed report cards.,The 2017 Water Quality Status Report is organized around seven major themes that our team thought both individually and collectively tell important stories about the overall health of our state’s surface waters. Each theme-specific story includes a brief background, a data analysis summary, an overview of management actions, and access to the raw data.,For more information please contact the Office of Information Management and Analysis (OIMA).,,Data for the section “Setting Flow Targets to Support Biological Integrity in Southern California Streams” can be found on the California open data portal. Data for the section “Nutrients and Algae in Aquatic Ecosystems” can be found here.,