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Altamont North Stp, City Of

202 North Second Street, Altamont, IL 62411 · Effingham County · Publicly Owned Treatment Works

Average flow
0.13 MGD
Design flow
0.39 MGD
NPDES permit
ILG580152
Effective
Permit expires
May 2027
Population served
701
CWNS 2022

Altamont North Stp, City Of is a publicly owned wastewater treatment works in Altamont, Effingham County, Illinois treating an average of 0.13 million gallons per day against a permitted design capacity of 0.39 MGD, serving about 701 residents. It discharges under NPDES permit ILG580152 (effective), which expires in May 2027, with 2 recorded violations in the last three years.

Treatment technology

One treatment structure or unit process identified at Altamont North Stp, City Of.

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Compliance snapshot (last 3 years)

Total violations
2
Effluent violations
2

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

Key contacts

Decision-makers at Altamont North Stp, City Of.

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Nearby wastewater treatment plants in Illinois

Shumway Collection & Treatment Facility

Shumway · 9 mi away

0.05 MGD

Watson Wtp, Village Of

Watson · 10 mi away

0.08 MGD

Mason Stp, Town Of

Mason · 10 mi away

0.09 MGD

Edgewood Stp, Village Of

Edgewood · 11 mi away

0.02 MGD

Effingham STP

Effingham · 12 mi away

2.21 MGD

Brownstown Stp, Village Of

Brownstown · 13 mi away

0.04 MGD

Cowden STP

Cowden · 14 mi away

—

Stewardson Stp, Village Of

Stewardson · 14 mi away

0.11 MGD

Altamont North Stp, City Of: 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 March 29, 2025.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Sludge dewatering · Biological nutrient removal · all terms


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