What is the address of Mount Olive North STP?

The address on the plant’s EPA facility record is West Second Street, Mount Olive, IL 62069, in Macoupin County. Its coordinates are 39.0747, -89.7402. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Mount Olive North STP treat?

Mount Olive North STP treats an average of 0.48 MGD and is permitted for a design flow of 1.29 MGD.

What treatment technology does Mount Olive North STP use?

Klarifi has identified 4 treatment structures and unit processes at the Mount Olive facility. The full treatment train, with exact unit counts, is shown in Klarifi with a free account.

What is the NPDES permit for Mount Olive North STP?

The facility discharges under NPDES permit IL0036528, currently effective, expiring May 2028.

Is Mount Olive North STP in compliance?

Discharge monitoring reports show 21 violations at Mount Olive North STP in the last three years, 21 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Mount Olive North STP and how do I contact them?

Mount Olive North STP is a publicly owned treatment works in Mount Olive, Illinois. Klarifi lists 2 verified decision-maker contacts for this facility, available with a free trial.

Try for free Log in

Mount Olive North STP

West Second Street, Mount Olive, IL 62069 · Macoupin County · Publicly Owned Treatment Works

Average flow: 0.48 MGD

Design flow: 1.29 MGD

NPDES permit: IL0036528; Effective

Permit expires: May 2028

Population served: 3,060; CWNS 2022

Mount Olive North STP is a publicly owned wastewater treatment works in Mount Olive, Macoupin County, Illinois treating an average of 0.48 million gallons per day against a permitted design capacity of 1.29 MGD, serving about 3,060 residents. It discharges under NPDES permit IL0036528 (effective), which expires in May 2028, with 21 recorded violations in the last three years.

Treatment technology

4 treatment structures and unit processes identified at Mount Olive North STP.

Available with a free Klarifi account

See the full treatment train at Mount Olive North STP: structures, unit processes and planned upgrades, with exact unit counts.

Create a free account

Compliance snapshot (last 3 years)

Total violations: 21

Effluent violations: 21

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

Key contacts

2 verified contacts for Mount Olive North STP, with validated emails and direct phone numbers.

Unlock 2 verified contacts

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

Try Klarifi free

Nearby wastewater treatment plants in Illinois

White City Stp, Village Of

White City · 2 mi away

0.03 MGD

Benld Stp, City Of

Benld · 4 mi away

0.15 MGD

Mount Clare Stp, Village Of

Mount Clare · 4 mi away

0.1 MGD

Gillespie Stp, Village Of

Gillespie · 4 mi away

0.16 MGD

Staunton Stp, City Of

Staunton · 5 mi away

0.83 MGD

Wilsonville Stp, Village Of

Wilsonville · 6 mi away

0.04 MGD

Livingston Wwtp, Village Of

Livingston · 8 mi away

0.2 MGD

New Douglas Stw, Village Of

New Douglas · 9 mi away

0.05 MGD

Mount Olive North 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 3, 2026.

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

Try Klarifi for free

Create your own trial account and explore how Klarifi can help you.

Try for free