California Surface Water Toxicity Results from CEDEN

Surface water toxicity data from the California Environmental Data Exchange Network (CEDEN), the state's system for water quality. It includes results from laboratory, physical, and biological analyses such as chemical, toxicological, bio-assessment, invertebrate, and fish assays. The dataset contains provisional data quality indicators to aid interpretation.

Use Cases

• Analyze toxicity test results across freshwater, estuarine, and marine environments to identify pollution hotspots.
• Correlate sediment toxicity data with bio-assessment and invertebrate assay results to study ecological impacts.
• Use the provisional DataQuality and DataQualityIndicator fields to filter and validate results for regulatory reporting.
• Model relationships between chemical analysis results and fish assay outcomes to predict biological effects.

Strengths

• Data originates from CEDEN, the California State Water Board's authoritative system for surface water quality.
• Includes diverse data types from chemical, toxicological, field, and biological analyses.
• Provides provisional data quality metadata (DataQuality, DataQualityIndicator) to aid user interpretation.
• Aggregates data from statewide sources including research and volunteer organizations.

Limitations

• Specific data volume (row count) and feature details (columns) are not provided in the input.
• Data quality is provisional and requires user interpretation using the provided indicators.
• The input does not specify a temporal range, limiting time-series analysis.

Provenance

Source

California Environmental Data Exchange Network (CEDEN), managed by the State Water Resources Control Board.

Collection Method

Aggregated from laboratory, physical, and biological analyses submitted by various statewide sources including research and volunteer organizations.

Freshness

Last updated March 2026.

Geography

Statewide data from freshwater, estuarine, and marine environments in California, USA.