What is the address of Cass City WWTP?

The address on the plant’s EPA facility record is 3998 Doerr Rd, Cass City, MI 48726, in Tuscola County. Its coordinates are 43.5854, -83.1804. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Cass City WWTP treat?

Cass City WWTP treats an average of 0.24 MGD.

What treatment technology does Cass City WWTP use?

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

What is the NPDES permit for Cass City WWTP?

The facility discharges under NPDES permit MI0022594, currently effective, expiring October 2027.

Is Cass City WWTP in compliance?

Discharge monitoring reports show 4 violations at Cass City WWTP in the last three years, 4 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Cass City WWTP and how do I contact them?

Cass City WWTP is a publicly owned treatment works in Cass City, Michigan. Klarifi lists 2 verified decision-maker contacts for this facility, available with a free trial.

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Cass City WWTP

3998 Doerr Rd, Cass City, MI 48726 · Tuscola County · Publicly Owned Treatment Works

Average flow: 0.24 MGD

Design flow: —

NPDES permit: MI0022594; Effective

Permit expires: October 2027

Population served: 2,694; CWNS 2022

Cass City WWTP is a publicly owned wastewater treatment works in Cass City, Tuscola County, Michigan treating an average of 0.24 million gallons per day, serving about 2,694 residents. It discharges under NPDES permit MI0022594 (effective), which expires in October 2027, with 4 recorded violations in the last three years.

Treatment technology

One treatment structure or unit process identified at Cass City WWTP.

Available with a free Klarifi account

See the full treatment train at Cass City WWTP: structures, unit processes and planned upgrades, with exact unit counts.

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Compliance snapshot (last 3 years)

Total violations: 4

Effluent violations: 4

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

Key contacts

2 verified contacts for Cass City WWTP, with validated emails and direct phone numbers.

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

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Cass City WWTP: 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 September 27, 2026.

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

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