What is the address of Cadiz STP?

The address on the plant’s EPA facility record is 181 Franklin St, Cadiz, KY 42211, in Trigg County. Its coordinates are 36.8626, -87.8410. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Cadiz STP treat?

Cadiz STP treats an average of 0.24 MGD and is permitted for a design flow of 0.59 MGD.

What treatment technology does Cadiz STP use?

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

What is the NPDES permit for Cadiz STP?

The facility discharges under NPDES permit KY0026891, currently effective, expiring November 2029.

Is Cadiz STP in compliance?

Discharge monitoring reports show 16 violations at Cadiz STP in the last three years, 16 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Cadiz STP and how do I contact them?

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

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Cadiz STP

181 Franklin St, Cadiz, KY 42211 · Trigg County · Publicly Owned Treatment Works

Average flow: 0.24 MGD

Design flow: 0.59 MGD

NPDES permit: KY0026891; Effective

Permit expires: November 2029

Population served: 2,590; CWNS 2022

Cadiz STP is a publicly owned wastewater treatment works in Cadiz, Trigg County, Kentucky treating an average of 0.24 million gallons per day against a permitted design capacity of 0.59 MGD, serving about 2,590 residents. It discharges under NPDES permit KY0026891 (effective), which expires in November 2029, with 16 recorded violations in the last three years.

Treatment technology

2 treatment structures and unit processes identified at Cadiz STP.

Available with a free Klarifi account

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

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Compliance snapshot (last 3 years)

Total violations: 16

Effluent violations: 16

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

Key contacts

1 verified contact for Cadiz STP, with validated emails and direct phone numbers.

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

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Marshall County Sanitation District #1

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Hopkinsville Hammond Wood STP

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Eddyville STP

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Kuttawa STP

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Dawson Springs STP

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Crofton WWTP

Crofton · 24 mi away

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Lake City WWTP

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Hardin Sewerage Treatment

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Cadiz 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 August 14, 2026.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Anaerobic digester · Lift station · all terms

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