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.

Mammoth Lakes, CA Water Quality, EPA Sites & Air Quality Data

Environmental Reporti

Water Systemsi

4community / 32 total

Water Violationsi

Active NPDESi

2/ 15 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 (25)

Community (4)

Non-Transient (3)

Recent Violations (Last 5 Years)

MAMMOTH CWD

3 violationsLatest: 2023-01-01

EPA

Historical Violations (Over 5 Years Ago)

PINE CREEK VILLAGE

20 violationsLatest: 2019-04-01

EPA

MOUNTAIN MEADOWS MWC

1 violationLatest: 1993-07-01

EPA

WHEELER CREST CSD

1 violationLatest: 1993-07-01

EPA

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

MAMMOTH CWD STPPO BOX 597Biosolids|EPA

HOT CREEK FISH HATCHERY121 HOT CREEK HATCHERY ROADMinor Discharge|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

RIVIAN_ADVENTURETeslaTesla Destination

80|50 Mammoth - Tesla Destination50 Canyon BlvdElectric3 L2Tesla Destination

Juniper Springs Resort - Tesla Destination4000 Meridian BlvdElectric5 L2Tesla Destination

Mammoth Lakes - Park & Ride - Tesla Supercharger1475 Tavern RoadElectric8 DCTesla

Mammoth Lakes, CA126 Old Mammoth RdElectric6 DCRIVIAN_ADVENTURE

Mammoth Lakes, CA - Old Mammoth Rd - Tesla Destination686 Old Mammoth RdElectric4 L2Tesla Destination

Mammoth Lakes, CA - Old Mammoth Road - Tesla Supercharger686 Old Mammoth RoadElectric12 DCTesla

The Village Lodge at Mammoth - Tesla Destination1111 Forest TrlElectric5 L2Tesla Destination

Westin Monache Resort - Tesla Destination50 Hillside DrElectric5 L2Tesla Destination