What is the address of Hyden STP?

The address on the plant’s EPA facility record is Ky Hwy 257 N, Hyden, KY 41749, in Leslie County. Its coordinates are 37.1733, -83.3664. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Hyden STP treat?

Hyden STP treats an average of 0.26 MGD and is permitted for a design flow of 0.2 MGD.

What treatment technology does Hyden STP use?

Klarifi has identified 5 treatment structures and unit processes at the Hyden facility. The full treatment train, with exact unit counts, is shown in Klarifi with a free account.

What is the NPDES permit for Hyden STP?

The facility discharges under NPDES permit KY0021245, currently expired, expiring August 2025.

Is Hyden STP in compliance?

Discharge monitoring reports show 104 violations at Hyden STP in the last three years, 69 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Hyden STP and how do I contact them?

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

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Hyden STP

Ky Hwy 257 N, Hyden, KY 41749 · Leslie County · Publicly Owned Treatment Works

Average flow: 0.26 MGD

Design flow: 0.2 MGD

NPDES permit: KY0021245; Expired

Permit expires: August 2025

Population served: 2,055; CWNS 2022

Hyden STP is a publicly owned wastewater treatment works in Hyden, Leslie County, Kentucky treating an average of 0.26 million gallons per day against a permitted design capacity of 0.2 MGD, serving about 2,055 residents. It discharges under NPDES permit KY0021245 (expired), which expires in August 2025, with 104 recorded violations in the last three years.

Treatment technology

5 treatment structures and unit processes identified at Hyden STP.

Available with a free Klarifi account

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

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Compliance snapshot (last 3 years)

Total violations: 104

Effluent violations: 69

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

Key contacts

Decision-makers at Hyden STP.

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Nearby wastewater treatment plants in Kentucky

Hazard, City Of

Hazard · 12 mi away

1.6 MGD

Perry County Sd 1 Regional STP

Chavies · 13 mi away

0.02 MGD

Vicco STP

Vicco · 17 mi away

0.04 MGD

Harlan STP

Harlan · 23 mi away

1.09 MGD

Hindman STP

Hindman · 23 mi away

0.15 MGD

Evarts STP

Evarts · 24 mi away

0.06 MGD

Cumberland Sewage Treatment Plant

Cumberland · 24 mi away

0.46 MGD

Evarts STP #2

Verda · 25 mi away

0.0029 MGD

Hyden 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 November 5, 2025.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Tertiary treatment · Significant industrial user · all terms

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