What is the address of Sterling Wwsl?

The address on the plant’s EPA facility record is 1202 E State St, Sterling, MI 48659, in Arenac County. Its coordinates are 44.0305, -84.0059. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Sterling Wwsl treat?

Sterling Wwsl treats an average of 0.98 MGD.

What treatment technology does Sterling Wwsl use?

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

What is the NPDES permit for Sterling Wwsl?

The facility discharges under NPDES permit MIG580082, currently effective, expiring April 2029.

Is Sterling Wwsl in compliance?

Discharge monitoring reports show 1 violation at Sterling Wwsl in the last three years, 1 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Sterling Wwsl and how do I contact them?

Sterling Wwsl is a publicly owned treatment works in Sterling, Michigan. Klarifi lists decision-maker contacts for this facility, available with a free trial.

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Sterling Wwsl

1202 E State St, Sterling, MI 48659 · Arenac County · Publicly Owned Treatment Works

Average flow: 0.98 MGD

Design flow: —

NPDES permit: MIG580082; Effective

Permit expires: April 2029

Population served: 502; CWNS 2022

Sterling Wwsl is a publicly owned wastewater treatment plant in Sterling, Arenac County, Michigan treating an average of 0.98 million gallons per day, serving about 502 residents. It discharges under NPDES permit MIG580082 (effective), which expires in April 2029, with 1 recorded violation in the last three years.

Treatment technology

One treatment structure or unit process identified at Sterling Wwsl.

Available with a free Klarifi account

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

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Compliance snapshot (last 3 years)

Total violations: 1

Effluent violations: 1

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

Key contacts

Decision-makers at Sterling Wwsl.

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Nearby wastewater treatment plants in Michigan

Standish WWTP

Standish · 5 mi away

0.49 MGD

Pinconning WWTP

Pinconning · 12 mi away

0.22 MGD

Twining Wwsl

Twining · 12 mi away

0.8 MGD

West Branch Area Wastewater Treatment Facility

West Branch · 18 mi away

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Billings Twp WWTP

Beaverton · 19 mi away

0.07 MGD

Butman Twp WWTP

Gladwin · 21 mi away

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Gladwin WWTP

Gladwin · 24 mi away

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Rose City Wwsl

Rose City · 27 mi away

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Sterling Wwsl: 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 19, 2026; facility record last updated September 27, 2026.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Activated sludge · Oxidation ditch · all terms

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