Water Quality Data
Water quality data are categorized under two major resource types — groundwater and surface water.
Groundwater Quality Data provide information on existing groundwater quality conditions and water quality trends within the District’s groundwater resources, including springs. They also improve the District’s understanding of groundwater quality concerns, support development of watershed management priorities and plans, and assist in measuring the success of implemented projects, programs and cooperatively funded initiatives.
Surface Water Quality Data are accessible for long-term and specialized surface water quality monitoring projects that occur at rivers, streams, lakes, canals and estuaries. These data provide status and trend information for watersheds located throughout the District.
The Environmental Data Portal (EDP) is the District’s official database of groundwater and surface water levels, flows, water quality, and atmospheric data such as rainfall, wind direction and temperature. The EDP also provides specific information about data collection sites such as location and well construction details. Current and historical data for long-term and specialized surface and groundwater water quality monitoring projects can be found in the EDP. Water quality data included within the EDP are collected or funded by the District to support resource management decisions and performance measurement goals. Data are updated as they become available.
Water Quality Data Collection App »
This map allows users to locate sites with water quality data and then link to the data in the EDP to view the data and export it if desired.
The District produces reports, summaries, and manuals in relation to our long-term surface and groundwater quality monitoring networks and water chemistry laboratory.
Other Water Quality Data Sources
In addition to the District’s water quality data, the following are links to other sources of surface and groundwater water quality information.