What is the address of Clarkson STP?

The address on the plant’s EPA facility record is 526 Spring Street, Clarkson, KY 42726, in Grayson County. Its coordinates are 37.4878, -86.2147. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Clarkson STP treat?

Clarkson STP is permitted for a design flow of 0.05 MGD. Its average daily flow is not available in the current EPA data.

What treatment technology does Clarkson STP use?

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

What is the NPDES permit for Clarkson STP?

The facility discharges under NPDES permit KY0090590, currently administratively continued, expiring August 2025.

Is Clarkson STP in compliance?

Discharge monitoring reports show 199 violations at Clarkson STP in the last three years, 199 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Clarkson STP and how do I contact them?

Clarkson STP is a publicly owned treatment works in Clarkson, Kentucky. Klarifi lists decision-maker contacts for this facility, available with a free trial.

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Clarkson STP

526 Spring Street, Clarkson, KY 42726 · Grayson County · Publicly Owned Treatment Works

Average flow: —

Design flow: 0.05 MGD

NPDES permit: KY0090590; Administratively continued

Permit expires: August 2025

Population served: 791; CWNS 2022

Clarkson STP is a publicly owned wastewater treatment works in Clarkson, Grayson County, Kentucky, serving about 791 residents. It discharges under NPDES permit KY0090590 (administratively continued), which expires in August 2025, with 199 recorded violations in the last three years.

Treatment technology

One treatment structure or unit process identified at Clarkson STP.

Available with a free Klarifi account

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

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Compliance snapshot (last 3 years)

Total violations: 199

Effluent violations: 199

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

Key contacts

Decision-makers at Clarkson STP.

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Nearby wastewater treatment plants in Kentucky

Leitchfield STP

Leitchfield · 4 mi away

1.42 MGD

Caneyville STP

Caneyville · 16 mi away

0.08 MGD

Hardin Co Water District No 2 Wastewater Colection

Elizabethtown · 20 mi away

—

Valley Creek Wastewater Treatment Plant

Elizabethtown · 20 mi away

6.45 MGD

Brownsville STP

Brownsville · 20 mi away

0.07 MGD

Munfordville STP

Munfordville · 23 mi away

0.15 MGD

Hardinsburg STP

Hardinsburg · 25 mi away

0.47 MGD

Vine Grove STP

Vine Grove · 26 mi away

0.58 MGD

Clarkson STP: 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 July 29, 2026.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Filter press · FOG · all terms

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