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.

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

Environmental Reporti

Air Qualityi

45Good

Water Systemsi

1community / 8 total

Water Violationsi

TRI Facilitiesi

32.2K lbs reported

Active NPDESi

8/ 11 total

Air Quality — Scioto 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 238

PM2.5 Daysi

266

Ozone Daysi

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 (7)

Community (1)

Recent Violations (Last 5 Years)

PORTSMOUTH CITY

4 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

Total Reported Releasesi

2.2K lbs

OSCO INDUSTRIES INC PORTSMOUTH DIV11TH & CHILLICOTHE ST5 chemicals|TRI

MITCHELLACE INC830 MURRAY ST1 chemical|TRI

LUCASVARITY HVBS, PORTSMOUTH CASTING CENTER2400 ECHARLES ST|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

NORFOLK SOUTHERN RAILWAY CO2435-M 8TH STREETMinor Discharge|EPA

SHAWNEE STATE PARK CAMPGROUND WWTP4404 STATE ROUTE 125Biosolids|EPA

ROCLA CONCRETE TIE INC6501 PERSHING AVEMinor Discharge|EPA

SCIOTOVILLE WWTP5808 EAST FRONT STREETBiosolids|EPA

CITY OF PORTSMOUTH WATER TREATMENT PLANT4862 GALLIA STMinor Discharge|EPA

SHAWNEE STATE PARK CAMPGROUND WWTP4404 STATE ROUTE 125POTW|EPA

TANGLEWOOD SUBDIV WWTPCO RD 241 WPOTW|EPA

PORTSMOUTH WASTE WATER TREATMENT PLANT2040 CHARLES ST.Biosolids|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.

MARTINGS BUILDING, PORTSMOUTH515 CHILLICOTHE STIn Progress|

BUSTER BI-LO5521 GALLIA STREETIn Progress|

RICH OIL1902 8TH STREETIn Progress|

KELSEY HAYES LANDFILL2400 EAST CHARLES STREETRemedy Complete|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 NetworkChargePoint NetworkEV Connect

Glockner Chevrolet4368 US-23Electric1 DCEV Connect

Glockner Honda Toyota2867 U.S. 23Electric2 L2Blink Network

PORTSMOUTH EVCS STATION1728 2nd StElectric2 L2ChargePoint Network