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.

Caldwell, OH Water Quality, EPA Sites & Air Quality Data

Environmental Reporti

Air Qualityi

39Good

Water Systemsi

3community / 10 total

Water Violationsi

TRI Facilitiesi

Active NPDESi

4/ 5 total

Air Quality — Noble 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.

Good

Median AQI

050100150200300

max 90

PM2.5 Daysi

Ozone Daysi

232

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 (6)

Community (3)

Non-Transient (1)

Recent Violations (Last 5 Years)

CALDWELL VILLAGE PWS

3 violationsLatest: 2025-07-01

EPA

PURE WATER CORPORATION

10 violationsLatest: 2025-07-02

EPA

PURE WATER SYSTEM 2 PWS

10 violationsLatest: 2025-07-02

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

MAHLE ENGINE COMPONENTS USA INC17226 INDUSTRIAL HWY4 chemicals|TRI

INTERNATIONAL CONVERTER LLC17153 IND US TRIAL HWY3 chemicals|TRI

GREIF BROS CORP17289 COUNTY RD 57|TRI

NATIONAL ALUMINUMNOBLE INDUSTRIAL PARK RTE 4|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

MAHLE ENGINE COMPONENTS USA INC17226 CR 57Minor Discharge|EPA

R.J. WRIGHT & SONS- BP OIL BULK PLANT901 MILLER STREETMinor Discharge|EPA

LASHLEY ADDITION WWTPLASHLEY ADDITION SENECA LAKEMinor Discharge|EPA

CALDWELL WWTPRAILROAD STNPDES PRETREATMENT PROGRAM|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.

MAHLE ENGINE COMPONENTS USA INC17226 CR 57Construction Complete|EPA

GVI/GOULD AKA CLEVITE BUSHINGCR821In Progress|EPA

ZILER'S GARAGE900 PLANING MILL STREETIn Progress|

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

DC Fast Portsi

eVgo Network

Pilot Travel Center 30944133 Fairground RoadElectric4 DCeVgo Network