How much wastewater does Big Timber treat?

Big Timber treats an average of 0.16 MGD.

What treatment technology does Big Timber use?

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

What is the NPDES permit for Big Timber?

The facility discharges under NPDES permit MT0020753, currently administratively continued, expiring April 2017.

Is Big Timber in compliance?

Discharge monitoring reports show 45 violations at Big Timber in the last three years, 45 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Big Timber and how do I contact them?

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

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Big Timber

Big Timber, MT 59011 · Sweet Grass County · Publicly Owned Treatment Works

Average flow: 0.16 MGD

Design flow: —

NPDES permit: MT0020753; Administratively continued

Permit expires: April 2017

Population served: 1,809; CWNS 2022

Big Timber is a publicly owned wastewater treatment plant in Big Timber, Sweet Grass County, Montana treating an average of 0.16 million gallons per day, serving about 1,809 residents. It discharges under NPDES permit MT0020753 (administratively continued), which expires in April 2017, with 45 recorded violations in the last three years.

Treatment technology

One treatment structure or unit process identified at Big Timber.

Available with a free Klarifi account

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

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Compliance snapshot (last 3 years)

Total violations: 45

Effluent violations: 45

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

Key contacts

1 verified contact for Big Timber, with validated emails and direct phone numbers.

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

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Nearby wastewater treatment plants in Montana

Water Reclamation Facility

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0.69 MGD

Town Of Columbus - Waste Water Treatment Facility

Columbus · 37 mi away

0.15 MGD

City Of Harlowton WWTF

Harlowton · 41 mi away

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Park City County Wastewater Treatment Facility

Park City · 52 mi away

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Joliet WWTP

Joliet · 53 mi away

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City Of Bozeman - Lyman Creek Reservoir

Bozeman · 53 mi away

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Red Lodge WWTF

Red Lodge · 55 mi away

—

City Of Bozeman WWTP

Bozeman · 55 mi away

6.55 MGD

Big Timber: 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 8, 2025.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · FOG · Equalization tank · all terms

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