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.

Mission Viejo, CA Water Quality, EPA Sites & Air Quality Data

MyTownView

Environmental Reporti

Air Qualityi

52Moderate

Water Systemsi

Water Compliancei

Clean

Active NPDESi

1/ 10 total

Air Quality — Orange County (2025)i

AQS

The Air Quality Index measures how clean or polluted the air is on a given day. AQI is reported at the county level. A score of 0–50 is considered good; 51–100 is moderate; above 100 may be unhealthy for sensitive groups.

Moderate

Median AQI

050100150200300

max 159

PM2.5 Daysi

149

Ozone Daysi

114

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 (4)

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

USPS MISSION VIEJO VMF28081 MARGUERITE PKWYIndustrial Stormwater|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.

ROBLEDO MERCURY24191 ROBLEDOIn Progress|EPA

EV Charging & Alternative Fuel Stationsi

AFDC

Publicly listed alternative fuel and EV charging stations within the municipality. Data from the U.S. Department of Energy. "Open" stations are currently available for use; "Planned" stations are approved but not yet operational.

Total Stationsi

EV Stationsi

Level 2 Portsi

DC Fast Portsi

Blink NetworkCIRCLE_KChargePoint NetworkElectrify AmericaLOOPSYNERGEVTeslaeVgo Network

1835 SUNNYCREST EV-1A&1B28881 Airoso StreetElectric2 L2ChargePoint Network

1835 SUNNYCREST EV-2A&2B28881 Airoso StreetElectric2 L2ChargePoint Network

1835 SUNNYCREST EV-4A&4B28881 Airoso StreetElectric2 L2ChargePoint Network

1835 SUNNYCREST EV-5A&5B28881 Airoso StreetElectric2 L2ChargePoint Network

1835 SUNNYCREST EV-6A&6B28881 Airoso StreetElectric2 L2ChargePoint Network

430606 eaves Mission Viejo24950 Via FlorecerElectric2 L2Blink Network

Ayres Hotel & Spa Mission Viejo28951 Los Alisos BlvdElectric4 L2LOOP

Ayres Suites Mission Viejo28941 Los Alisos BlvdElectric4 L2LOOP

Casa Loma HOA25809 Marguerite PkwyElectric4 L2SYNERGEV

CircleK - Mission Veijo26052 Marguerite PkwyElectric4 DCCIRCLE_K

Kaleidoscope - Tesla Supercharger27741 Crown Valley ParkwayElectric8 DCTesla

REATA GLEN CANYON VIEW #22 Las Estrellas Loop CANYON VIEW #2Electric2 L2ChargePoint Network

REATA GLEN CANYON VIEW #32 Las Estrellas Loop CANYON VIEW #3Electric2 L2ChargePoint Network

RMV SENDERO BLUFFS30492 Gateway PlElectric2 L2ChargePoint Network

SADDLEBACK LOT 12A ADA28000 Marguerite Pkwy Lot 12AElectric2 L2ChargePoint Network

SADDLEBACK LOT 12A EAST 128000 Marguerite Pkwy LOT 12AElectric2 L2ChargePoint Network

SADDLEBACK LOT 12A EAST 228000 Marguerite Pkwy LOT 12AElectric2 L2ChargePoint Network

SADDLEBACK LOT 12A EAST 328000 Marguerite Pkwy LOT 12AElectric2 L2ChargePoint Network

SADDLEBACK LOT 12A WEST 128000 Marguerite Pkwy LOT 12AElectric2 L2ChargePoint Network

SADDLEBACK LOT 12A WEST 228000 Marguerite Pkwy LOT 12AElectric2 L2ChargePoint Network

SADDLEBACK LOT 12A WEST 328000 Marguerite Pkwy LOT 12AElectric2 L2ChargePoint Network

SADDLEBACK LOT 5A EAST28000 Marguerite Pkwy Lot 5AElectric1 L2ChargePoint Network

SADDLEBACK LOT 5A WEST28000 Marguerite Pkwy Lot 5AElectric1 L2ChargePoint Network

SADDLEBACK LOT 5B DUAL28000 Marguerite Pkwy Lot 5BElectric2 L2ChargePoint Network

SADDLEBACK LOT 5B EAST28000 Marguerite Pkwy Lot 5BElectric1 L2ChargePoint Network

SADDLEBACK LOT 5B WEST28000 Marguerite Pkwy Lot 5BElectric1 L2ChargePoint Network

Shops at Mission Viejo (Mission Viejo, CA)555 Shops Blvd.Electric4 DCElectrify America

Target T0300 (Mission Viejo, CA)24500 Alicia PkwyElectric6 DCElectrify America

The Shops at Mission Viejo555 The Shops At Mission ViejoElectric1 L2 + 2 DCeVgo Network

The Shops at Missions Viejo - Tesla Supercharger555 The Shops at Mission ViejoElectric10 DCTesla

Mission Viejo, CA Water Quality, EPA Sites & Air Quality Data