What is the address of Adena WWTP?

The address on the plant’s EPA facility record is Smithfield Twp Rd 122, Adena, OH 43901, in Jefferson County. Its coordinates are 40.2166, -80.8671. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Adena WWTP treat?

Adena WWTP treats an average of 0.21 MGD and is permitted for a design flow of 0.13 MGD.

What treatment technology does Adena WWTP use?

Klarifi has identified 2 treatment structures and unit processes at the Adena facility. The full treatment train, with exact unit counts, is shown in Klarifi with a free account.

What is the NPDES permit for Adena WWTP?

The facility discharges under NPDES permit OH0021661, currently effective, expiring January 2029.

Is Adena WWTP in compliance?

Discharge monitoring reports show 21 violations at Adena WWTP in the last three years, 17 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Adena WWTP and how do I contact them?

Adena WWTP is a publicly owned treatment works in Adena, Ohio. Klarifi lists 1 verified decision-maker contact for this facility, available with a free trial.

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Adena WWTP

Smithfield Twp Rd 122, Adena, OH 43901 · Jefferson County · Publicly Owned Treatment Works

Average flow: 0.21 MGD

Design flow: 0.13 MGD

NPDES permit: OH0021661; Effective

Permit expires: January 2029

Population served: 666; CWNS 2022

Adena WWTP is a publicly owned wastewater treatment works in Adena, Jefferson County, Ohio treating an average of 0.21 million gallons per day against a permitted design capacity of 0.13 MGD, serving about 666 residents. It discharges under NPDES permit OH0021661 (effective), which expires in January 2029, with 21 recorded violations in the last three years.

Treatment technology

2 treatment structures and unit processes identified at Adena WWTP.

Available with a free Klarifi account

See the full treatment train at Adena WWTP: structures, unit processes and planned upgrades, with exact unit counts.

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Compliance snapshot (last 3 years)

Total violations: 21

Effluent violations: 17

Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.

Key contacts

1 verified contact for Adena WWTP, with validated emails and direct phone numbers.

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Names, validated emails and direct phone numbers for decision-makers at Adena WWTP, plus the full compliance history and discharge data.

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Nearby wastewater treatment plants in Ohio

Dillonvale-Mt Pleasant

Dillonvale · 5 mi away

0.13 MGD

Cadiz WWTP

Cadiz · 6 mi away

0.53 MGD

Smithfield WWTP

Smithfield · 6 mi away

0.11 MGD

Hopedale WWTP

Hopedale · 7 mi away

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St Clairsville WWTP

St Clairsville · 9 mi away

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Pennwood Estates Subdiv

St Clairsville · 9 mi away

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Yorkville STP

Yorkville · 9 mi away

0.09 MGD

St Clairsville West WWTP

Saint Clairsville · 10 mi away

0.07 MGD

Adena WWTP: frequently asked questions

Sources and methodology

Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.

Data refreshed October 26, 2026; facility record last updated November 29, 2025.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · WWTP · Biosolids · all terms

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