How much wastewater does Baldwin STP treat?

Baldwin STP treats an average of 0.05 MGD and is permitted for a design flow of 0.13 MGD.

What treatment technology does Baldwin STP use?

Klarifi has identified uncovered lagoons at the Baldwin facility.

What is the NPDES permit for Baldwin STP?

The facility discharges under NPDES permit IL0027219, currently effective, expiring March 2028.

Is Baldwin STP in compliance?

Discharge monitoring reports show 23 violations at Baldwin STP in the last three years, 23 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Baldwin STP and how do I contact them?

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

Try for free Log in

Baldwin STP

Baldwin, IL · Randolph County · Publicly Owned Treatment Works

Average flow: 0.05 MGD

Design flow: 0.13 MGD

NPDES permit: IL0027219; Effective

Permit expires: March 2028

Population served: 432; CWNS 2022

Baldwin STP is a publicly owned wastewater treatment works in Baldwin, Randolph County, Illinois treating an average of 0.05 million gallons per day against a permitted design capacity of 0.13 MGD, serving about 432 residents. Treatment on site includes uncovered lagoons. It discharges under NPDES permit IL0027219 (effective), which expires in March 2028, with 23 recorded violations in the last three years.

Treatment technology

Treatment structures identified at this facility. Exact unit counts are available in Klarifi.

Uncovered lagoons

Unlock

Unlock exact unit counts →

Compliance snapshot (last 3 years)

Total violations: 23

Effluent violations: 23

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

Key contacts

Decision-makers at Baldwin STP.

No verified contacts on file yet

Klarifi verifies plant and municipal decision-makers continuously. Start a free trial to browse contacts at nearby plants and flag this one for verification.

Try Klarifi free

Nearby wastewater treatment plants in Illinois

Marissa, Village Of

Marissa · 7 mi away

0.31 MGD

Lenzburg - Stp, Village Of

Lenzburg · 8 mi away

0.02 MGD

Tilden STP

Tilden · 8 mi away

0.009 MGD

Evansville Stp, Village Of

Evansville · 9 mi away

0.001 MGD

Sparta - Southeast Stp, City Of

Sparta · 9 mi away

0.41 MGD

Ruma Wwtp, Village Of

Ruma · 9 mi away

0.008 MGD

City Of Red Bud

Red Bud · 9 mi away

0.36 MGD

Coulterville STP

Coulterville · 12 mi away

0.02 MGD

Baldwin 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 September 11, 2026; facility record last updated September 21, 2025.

Try Klarifi for free

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

Try for free