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.

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

Environmental Reporti

Water Systemsi

24community / 60 total

Water Violationsi

TRI Facilitiesi

Active NPDESi

3/ 14 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 (24)

Community (24)

Non-Transient (2)

Recent Violations (Last 5 Years)

Big Valley Rancheria Water District

2 violationsLatest: 2025-01-01

EPA

CORINTHIAN BAY MUTUAL WATER COMPANY

5 violationsLatest: 2023-01-01

EPA

PIER 1900 HOMEOWNER'S ASSOCIATION

3 violationsLatest: 2024-10-17

EPA

Historical Violations (Over 5 Years Ago)

LAKE COUNTY CSA 16 - PARADISE VALLEY

1 violationLatest: 1997-03-01

EPA

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

GRANITE CONSTRUCTION CO - HIGHWAY 1754220 STATE HWY 1752 chemicals|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

LAKE COUNTY NW REGIONAL PLANT230A N MAIN STBiosolids|EPA

UPS LAKEPORT CENTER CALAK1275 CRAIG AVEIndustrial Stormwater|EPA

LAKE COUNTY NW REGIONAL PLANT230A N MAIN STBiosolids|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

ChargePoint NetworkEV Connect

City of Lakeport225 Park St,Electric2 L2EV Connect

MENDO COLLEGE LAKE EV12565 Parallel DrElectric2 L2ChargePoint Network

Skylark Shores Resort1120 N Main StElectric2 L2EV Connect