MWRDGC Terrence J O'Brien Water Reclamation Plant
3500 West Howard Street, Skokie, IL 60076 · Cook County · Publicly Owned Treatment Works
- Average flow
- 205.79 MGD
- Design flow
- 450 MGD
- NPDES permit
- IL0028088
- Administratively continued
- Permit expires
- July 2022
- Population served
- 946,333
- CWNS 2022
MWRDGC Terrence J O'Brien Water Reclamation Plant is a publicly owned wastewater treatment works in Skokie, Cook County, Illinois treating an average of 205.79 million gallons per day against a permitted design capacity of 450 MGD, serving about 946,333 residents. It discharges under NPDES permit IL0028088 (administratively continued), which expires in July 2022, with 16 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in January 2014.
Treatment technology
2 treatment structures and unit processes identified at MWRDGC Terrence J O'Brien Water Reclamation Plant.
Available with a free Klarifi account
See the full treatment train at MWRDGC Terrence J O'Brien Water Reclamation Plant: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 16
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
EPA enforcement history
Federal civil enforcement cases, compliance inspections and informal actions recorded for MWRDGC Terrence J O'Brien Water Reclamation Plant in EPA's ICIS system.
- Formal actions
- 1
- 0 since FY2020
- Penalties assessed
- $675,000
- all cases
- Compliance actions
- $1,770M
- required by EPA orders
- EPA inspections
- 0
- none on record
Latest case · Jan 2014
METROPOLITAN WATER RECLAMATION DISTRICT
Judicial case · CWA, NPDES Discharge without a Permit · Final Order Entered · Penalty $675,000 · Compliance actions $1,770M · The case also names 2 other plants, and its amounts cover all of them
EPA's description of the case:
“MWRDGC owns and operates 7 WWTPs in the Chicago Area”
Source: EPA ECHO, civil enforcement case 05-2001-0642.
Full case history with a free Klarifi account
Every action against MWRDGC Terrence J O'Brien Water Reclamation Plant with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Capital improvement projects in Skokie
Skokie's capital improvement plan lists 12 water, sewer and wastewater line items worth $74M starting 2026–2026. The largest budgeted items are shown here.
All water and sewer capital projects in Skokie →
| Project | Budget | Years |
|---|---|---|
| Water Main Replacement | $40,420,380 | 2026–2030 |
| Lead Service Line Replacement | $20,592,254 | 2026–2030 |
| Sewer System Rehabilitation | $5,000,000 | 2026–2030 |
| Congressionally Directed Spending | $2,000,000 | 2026–2026 |
| Fire Hydrants: 50 @ $4,500 | $1,125,000 | 2026–2030 |
Full project details — scope, funding source, engineering consultant and the decision-makers behind each project — are available in Klarifi, along with similar wastewater capital projects in other cities.
Key contacts
8 verified contacts for MWRDGC Terrence J O'Brien Water Reclamation Plant, with validated emails and direct phone numbers.
Unlock 8 verified contacts (5 more than shown)
Names, validated emails and direct phone numbers for decision-makers at MWRDGC Terrence J O'Brien Water Reclamation Plant, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Illinois
Deerfield · 12 mi away
2.4 MGD
Wood Dale · 14 mi away
1.58 MGD
Wood Dale · 14 mi away
0.27 MGD
Itasca · 15 mi away
—
Itasca · 15 mi away
1.65 MGD
Addison · 15 mi away
1.93 MGD
Addison · 15 mi away
3.21 MGD
Buffalo Grove · 15 mi away
9.09 MGD
MWRDGC Terrence J O'Brien Water Reclamation Plant: 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 May 17, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Ozonation · Activated sludge · all terms