What is the address of Calhoun WWTP?

The address on the plant’s EPA facility record is 175 Wilson Ln, Calhoun, KY 42327, in Mclean County. Its coordinates are 37.5354, -87.2658. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Calhoun WWTP treat?

Calhoun WWTP treats an average of 0.24 MGD and is permitted for a design flow of 0.4 MGD.

What treatment technology does Calhoun WWTP use?

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

What is the NPDES permit for Calhoun WWTP?

The facility discharges under NPDES permit KY0020125, currently effective, expiring March 2029.

Is Calhoun WWTP in compliance?

Discharge monitoring reports show 5 violations at Calhoun WWTP in the last three years, 5 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Calhoun WWTP and how do I contact them?

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

Try for free Log in

Calhoun WWTP

175 Wilson Ln, Calhoun, KY 42327 · Mclean County · Publicly Owned Treatment Works

Average flow: 0.24 MGD

Design flow: 0.4 MGD

NPDES permit: KY0020125; Effective

Permit expires: March 2029

Population served: 1,388; CWNS 2022

Calhoun WWTP is a publicly owned wastewater treatment works in Calhoun, Mclean County, Kentucky treating an average of 0.24 million gallons per day against a permitted design capacity of 0.4 MGD, serving about 1,388 residents. It discharges under NPDES permit KY0020125 (effective), which expires in March 2029, with 5 recorded violations in the last three years.

Treatment technology

One treatment structure or unit process identified at Calhoun WWTP.

Available with a free Klarifi account

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

Create a free account

Compliance snapshot (last 3 years)

Total violations: 5

Effluent violations: 5

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

Key contacts

Decision-makers at Calhoun WWTP.

No verified contacts on file yet

Klarifi verifies plant and municipal decision-makers continuously. Start a free trial to browse contacts at nearby plants and flag this one for verification.

Try Klarifi free

Nearby wastewater treatment plants in Kentucky

Livermore STP

Livermore · 8 mi away

0.09 MGD

Island STP

Island · 9 mi away

0.05 MGD

Sacramento STP

Sacramento · 10 mi away

0.02 MGD

Henderson South STP #2

Robards · 16 mi away

2.69 MGD

Rwra Max Rhoads WWTP

Owensboro · 19 mi away

7.68 MGD

Powderly, City Of

Powderly · 22 mi away

—

Greenville STP

Greenville · 22 mi away

1.19 MGD

Whitesville STP

Whitesville · 25 mi away

0.07 MGD

Calhoun 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 August 4, 2026.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biological nutrient removal · Tertiary treatment · all terms

Try Klarifi for free

Create your own trial account and explore how Klarifi can help you.

Try for free