What is the address of Morris - Main STP?

The address on the plant’s EPA facility record is North River Road, Morris, IL 60450, in Grundy County. Its coordinates are 41.3549, -88.4318. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Morris - Main STP treat?

Morris - Main STP treats an average of 2.33 MGD.

What treatment technology does Morris - Main STP use?

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

What is the NPDES permit for Morris - Main STP?

The facility discharges under NPDES permit ILL021113, currently effective, expiring December 2030.

Is Morris - Main STP in compliance?

Discharge monitoring reports show 4 violations at Morris - Main STP in the last three years, 4 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Morris - Main STP and how do I contact them?

Morris - Main STP is a publicly owned treatment works in Morris, Illinois. Klarifi lists 1 verified decision-maker contact for this facility, available with a free trial.

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Morris - Main STP

North River Road, Morris, IL 60450 · Grundy County · Publicly Owned Treatment Works

Average flow: 2.33 MGD

Design flow: —

NPDES permit: ILL021113; Effective

Permit expires: December 2030

Population served: 9,099; CWNS 2022

Morris - Main STP is a publicly owned wastewater treatment works in Morris, Grundy County, Illinois treating an average of 2.33 million gallons per day, serving about 9,099 residents. It discharges under NPDES permit ILL021113 (effective), which expires in December 2030, with 4 recorded violations in the last three years.

Treatment technology

One treatment structure or unit process identified at Morris - Main STP.

Available with a free Klarifi account

See the full treatment train at Morris - Main STP: 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

1 verified contact for Morris - Main STP, with validated emails and direct phone numbers.

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

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Nearby wastewater treatment plants in Illinois

Morris WWTP #2 - Stp, City Of

Morris · 2 mi away

1.62 MGD

Mazon Stp, Village Of

Mazon · 8 mi away

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Coal City Stp, Village Of

Coal City · 9 mi away

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Diamond Wwtp, Village Of

Diamond · 10 mi away

0.52 MGD

Verona Stp, Village Of

Verona · 10 mi away

0.04 MGD

Marseilles - South Stp, City Of

Marseilles · 12 mi away

0.05 MGD

Braidwood Stp, City Of

Braidwood · 12 mi away

1.23 MGD

Gardner STP

Gardner · 13 mi away

0.52 MGD

Morris - Main 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 6, 2026.

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

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