What is the address of Seaman WWTP?

The address on the plant’s EPA facility record is 20 Locust St, Seaman, OH 45679, in Adams County. Its coordinates are 38.9486, -83.5715. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Seaman WWTP treat?

Seaman WWTP treats an average of 0.14 MGD and is permitted for a design flow of 0.18 MGD.

What treatment technology does Seaman WWTP use?

Klarifi has identified one treatment structure or unit process at the Seaman facility. The full treatment train, with exact unit counts, is shown in Klarifi with a free account.

What is the NPDES permit for Seaman WWTP?

The facility discharges under NPDES permit OH0027341, currently effective, expiring October 2029.

Is Seaman WWTP in compliance?

Discharge monitoring reports show 8 violations at Seaman WWTP in the last three years, 8 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Seaman WWTP and how do I contact them?

Seaman WWTP is a publicly owned treatment works in Seaman, Ohio. Klarifi lists decision-maker contacts for this facility, available with a free trial.

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Seaman WWTP

20 Locust St, Seaman, OH 45679 · Adams County · Publicly Owned Treatment Works

Average flow: 0.14 MGD

Design flow: 0.18 MGD

NPDES permit: OH0027341; Effective

Permit expires: October 2029

Population served: 1,048; CWNS 2022

Seaman WWTP is a publicly owned wastewater treatment works in Seaman, Adams County, Ohio treating an average of 0.14 million gallons per day against a permitted design capacity of 0.18 MGD, serving about 1,048 residents. It discharges under NPDES permit OH0027341 (effective), which expires in October 2029, with 8 recorded violations in the last three years.

Treatment technology

One treatment structure or unit process identified at Seaman WWTP.

Available with a free Klarifi account

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

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Compliance snapshot (last 3 years)

Total violations: 8

Effluent violations: 8

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

Key contacts

Decision-makers at Seaman WWTP.

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Nearby wastewater treatment plants in Ohio

Winchester WWTP

Winchester · 4 mi away

—

Peebles Public Water System

Peebles · 8 mi away

0.33 MGD

West Union WWTP

West Union · 11 mi away

0.58 MGD

Russellville WWTP

Russellville · 12 mi away

0.18 MGD

Sardinia WWTP

Sardinia · 13 mi away

0.11 MGD

Rolling Acres WWTP

Hillsboro · 18 mi away

0.006 MGD

Manchester WWTP

Manchester · 18 mi away

0.21 MGD

Mt Orab WWTP

Mount Orab · 19 mi away

0.66 MGD

Seaman 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 September 16, 2026.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Centrate · Ozonation · all terms

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