Quick Start

- Click the Layers icon to expose the layers
- Click the box next to each layer to reveal the data
- Click a census block group (CBG) polygon to reveal the data attributes
- Use search box to zoom to address
- Click on map and drag to move it
- Click "Legend" to view symbology of each layer

- Click on map points in the social media layers to reveal Ambiant Geographic Information (AGI) for the marker. (To add to the social media data layer, go to Instagram, Flickr, Twitter, YouTube or Webcams.travel to contribute)
- Click the icon to share this map

* Go to the "About" link in the top right navigation menu for the Data Resources used in this map.
* The Media layers are programmed to keyword search "community" results for all time from selected Social Media Websites.

Public Participation Geographic Information System

- Clicking the circle icon zooms to user location
- Use search box to zoom to address
- Click the "Culture and Community" polygon on left panel, so that it is in a blue box, to add new features to the layer
- Click on the map for each corner of your polygon and double click to finish
- In the pop-up box, type locational place name, any sustainable characteristics, and feedback
- To add the location, click the x in the upper right corner of the pop-up
- To remove your input, click the Delete button in the lower right of the pop-up
- Add or edit feedback for existing features by clicking "Culture and Community" polygon on left panel to clear the blue box
* To save your additions, click the x in the upper right corner of the pop-up

Map Demonstration of California's Bay area by the Environmental Protection Agency - Produced by.epa.gov
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  • The AQI is an index for reporting daily air quality. It tells you how clean or polluted your air is, and what associated health effects might be a concern for you. The AQI focuses on health effects you may experience within a few hours or days after breathing polluted air.

The Water Quality Assessment data are not available at current map scale. Zoom in on the map to find a river/lake in which you may be interested.

Water Quality Monitoring

Water quality monitoring is a crucial aspect to protecting water resources. State, Tribal, and Federal agencies must monitor lakes, streams, rivers, and other types of water bodies to assist them in determining water quality condition. Read More

Results Found In

(# of stations) (% of stations) *
Biological more info 14 3.8
Metal more info 108 29.3
Microbiological more info 175 47.4
PCB more info 29 7.9
Pesticide more info 43 11.7

* Percentage of area stations at which the sampling was taken.
EPA EnviroFacts Widgets


Resource Conservation and Recovery Act (RCRA)


Safe Drinking Water Information System (SDWIS)


Water Dischargers (PCS/ICIS) and Toxic Releases to Water (TRI)


Toxic Substances Control Act (TSCA)


Envirofacts Multisystem