What environmental databases are included?

This page aggregates data from eight EPA databases: Safe Drinking Water (SDWIS), Superfund/NPL sites, Toxic Release Inventory (TRI), Air Quality Index (AQI), Leaking Underground Storage Tanks (LUST), NPDES water discharge permits, RCRA hazardous waste, and Brownfields.

What does the Air Quality Index (AQI) mean?

AQI is measured on a scale from 0 to 500. Values under 50 are 'Good,' 51-100 is 'Moderate,' and above 100 is 'Unhealthy for Sensitive Groups.' AQI is measured at the county level since air quality monitoring stations are sparse. Your town shares its county's AQI reading.

What is a Superfund site?

A Superfund site is a location contaminated by hazardous waste that has been placed on the EPA's National Priorities List (NPL) for long-term cleanup. These sites pose serious risks to human health and the environment. Cleanup can take decades and cost hundreds of millions of dollars.

Dixon, CA Water Quality, EPA Sites & Air Quality Data

CSASan Jose-San Francisco-Oakland MSAVallejo#4/7 Income

Environmental Reporti

Water Systemsi

3community / 33 total

Water Compliancei

Clean

TRI Facilitiesi

Active NPDESi

4/ 32 total

Drinking Wateri

SDWIS

Public water systems registered to serve this area. Community systems (CWS) provide water to residents year-round. Transient systems serve places like gas stations or restaurants. Violations indicate a system failed to meet federal drinking water standards.

Community Systemsi

Active Systemsi

Recent Violationsi

Transient (23)

Non-Transient (7)

Community (3)

Toxic Release Inventory (TRI)i

TRI

Factories, refineries, and other industrial facilities that use or store hazardous chemicals are required to report their releases annually to the EPA. Being listed here does not mean a violation occurred — it means the facility is transparently tracking its chemical usage.

Reporting Facilitiesi

With Chemical Datai

INX INTERNATIONAL INK CO405 INDUSTRIAL WAY3 chemicals|TRI

BASALITE605 INDUSTRIAL WAY2 chemicals|TRI

SYAR DIXON LLC7043 TREMONT RD2 chemicals|TRI

INSULFOAM1155 B US INESS PARK DR1 chemical|TRI

HANSON ROOF TILE - DIXON8668 SPARLING LN1 chemical|TRI

DIXON CANNING CORP8380 PEDRICK RD|TRI

SIMPLOT SOILBUILDERS7235 TREMONT RD|TRI

Wastewater & Stormwater Permits (NPDES)i

NPDES

Under the Clean Water Act, any facility that discharges wastewater or stormwater into rivers, lakes, or streams must hold an NPDES permit. "Effective" means the permit is currently active and the facility is authorized to discharge under its permit conditions.

Active Permitsi

Expired / Terminatedi

RUHSTALLER6686 SIEVERS RDIndustrial Stormwater|EPA

RECLM DIST 2068-AQ PESTICIDESNOT APPLICABLEMinor Discharge|EPA

DIXON WWTF600 E. A STREETBiosolids|EPA

DIXON RESOURCE-AQ PESTICIDESNOT APPLICABLEMinor Discharge|EPA

Cleanup Sites (Brownfields)i

EPA Brownfields

Former industrial or commercial properties where contamination has been found. "Remedy Complete" means cleanup is finished. "Construction Complete" means cleanup infrastructure is built but monitoring continues. "In Progress" means the site is still being investigated or cleaned up.

THE TREMONT GROUP, INC. TSI DIVISION7235 TREMONT RDIn Progress|EPA

NAVAL RADIO TRANSMITTING FACILRADIO STA RDIn Progress|EPA