What is the address of Chatham (v) STP?

The address on the plant’s EPA facility record is Brookside Avenue Extension, Chatham, NY 12037, in Columbia County. Its coordinates are 42.3665, -73.6017. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Chatham (v) STP treat?

Chatham (v) STP treats an average of 0.19 MGD and is permitted for a design flow of 0.55 MGD.

What treatment technology does Chatham (v) STP use?

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

What is the NPDES permit for Chatham (v) STP?

The facility discharges under NPDES permit NY0023582, currently effective, expiring October 2030.

Is Chatham (v) STP in compliance?

Discharge monitoring reports show 66 violations at Chatham (v) STP in the last three years, 6 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Chatham (v) STP and how do I contact them?

Chatham (v) STP is a publicly owned treatment works in Chatham, New York. Klarifi lists 1 verified decision-maker contact for this facility, available with a free trial.

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Chatham (v) STP

Brookside Avenue Extension, Chatham, NY 12037 · Columbia County · Publicly Owned Treatment Works

Average flow: 0.19 MGD

Design flow: 0.55 MGD

NPDES permit: NY0023582; Effective

Permit expires: October 2030

Population served: 2,078; CWNS 2022

Chatham (v) STP is a publicly owned wastewater treatment works in Chatham, Columbia County, New York treating an average of 0.19 million gallons per day against a permitted design capacity of 0.55 MGD, serving about 2,078 residents. It discharges under NPDES permit NY0023582 (effective), which expires in October 2030, with 66 recorded violations in the last three years.

Treatment technology

One treatment structure or unit process identified at Chatham (v) STP.

Available with a free Klarifi account

See the full treatment train at Chatham (v) STP: structures, unit processes and planned upgrades, with exact unit counts.

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Compliance snapshot (last 3 years)

Total violations: 66

Effluent violations: 6

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

Key contacts

1 verified contact for Chatham (v) STP, with validated emails and direct phone numbers.

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

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Chatham (v) 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 13, 2026.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Oxidation ditch · Anaerobic digester · all terms

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