State of California

Wastewater Surveillance

Wastewater surveillance data from the Cal-SuWers network tracks infectious disease pathogens, including SARS-CoV-2, influenza, RSV, mpox, and norovirus, at monitoring sites across California. Each record includes the pathogen detected, its concentration in wastewater, the sample collection date, and the monitoring site location.

Example records
Namelegal entityAlternate NamebrandCityaddressStateaddressZIP CodeaddressElevationgeospatialEpaidregistrationCounty NamesgeographicCapacity MgdquantityPopulation ServedquantityIndustrial InputstatusStormwater Inputstatus
windsor water district wastewater treatmWindsor_WTRDFSonomaCA95492ca0023345[06097]528000
windsor water district wastewater treatmWindsor_WTRDFSonomaCA95492ca0023345[06097]528000
windsor water district wastewater treatmWindsor_WTRDFSonomaCA95492ca0023345[06097]528000
Use cases

Insurance Underwriting for Pandemic Business Interruption Coverage

A commercial insurance underwriter assessing business interruption policy renewals for hospitality or retail clients in California cross-references wastewater pathogen signals at nearby treatment facilities against the insured business's ZIP code and population catchment to gauge forward-looking disease exposure before setting premiums.

ZIP CodeCounty NamesPopulation ServedSample Collect DateName

Vendor Due Diligence on Wastewater Lab Service Providers

A procurement team at a municipal water authority vetting laboratory contractors checks which extraction and concentration methods are in active use across California facilities, and whether the labs associated with those methods hold valid EPA permit registrations, to confirm technical competency and regulatory standing before awarding a service contract.

EpaidLab IDConcentration MethodExtraction MethodWwtp Jurisdiction

Workforce Absence Forecasting for Large Employers

A human resources analytics team at a large California employer monitors wastewater pathogen trends in the counties where their facilities operate to anticipate spikes in employee illness and adjust staffing, leave reserves, and supply chain buffers several weeks ahead of clinical case counts.

County NamesSample Collect DatePopulation ServedFlow RateInstitution Type
Related datasets
Decentralized Water Reuse Scenarios (San Francisco)U.S. Environmental Protection AgencyBasin Characterization Program (Department of Water Resources)State of CaliforniaEconomically Significant Oil Spill SitesState of CaliforniaWater Withdrawals by Facility (2009-Present)State of New YorkDraft Terrestrial Landscape Intactness for 2026-2027 Integrated Resource PlanState of CaliforniaElectric Load Serving EntitiesState of CaliforniaMines (Division of Mining and Reclamation)State of CaliforniaElectric Load Serving Entities (Investor-Owned and Publicly-Owned Utilities)State of CaliforniaChinook Salmon Abundance by Linear FeaturesState of CaliforniaCalifornia Integrated Travel Project GTFS Ingest PipelineState of California30x30 Conserved Areas, TerrestrialState of CaliforniaHealth Professional Shortage Areas in CaliforniaState of CaliforniaChinook Salmon Abundance by Point FeaturesState of CaliforniaMajor U.S. Fuel Cycle Facility SitesNuclear Regulatory CommissionWater Rights Annual ReportsState of CaliforniaPlaces of Use - FishState of OregonContiguous U.S. Cyanobacteria ExtentU.S. Environmental Protection AgencyLiquids Pipeline ProjectsDepartment of EnergyToxics Release InventoryU.S. Environmental Protection AgencyEPA Integrated Compliance Information System: Air FacilitiesU.S. Environmental Protection Agency