Deerfield WRF
Deerfield, IL · Lake County · Publicly Owned Treatment Works
- Average flow
- 1.78 MGD
- Design flow
- —
- NPDES permit
- ILL028347
- Effective
- Permit expires
- December 2030
- Population served
- 19,528
- CWNS 2022
Deerfield WRF is a publicly owned wastewater treatment works in Deerfield, Lake County, Illinois treating an average of 1.78 million gallons per day, serving about 19,528 residents. Treatment on site includes clarifiers. It discharges under NPDES permit ILL028347 (effective), which expires in December 2030, with 11 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Clarifiers
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Compliance snapshot (last 3 years)
- Total violations
- 11
- Effluent violations
- 11
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Capital improvement projects in Deerfield
Deerfield's capital improvement plan lists 10 water, sewer and wastewater line items worth $10M starting 2025–2026. The largest budgeted items are shown here.
All water and sewer capital projects in Deerfield →
| Project | Budget | Years |
|---|---|---|
| Water System Redundancy Project (Northbrook Connection) | $5,700,000 | 2025–2025 |
| Sanitary Sewer Lining | $2,125,000 | 2025–2028 |
| Lead Service Line Elimination Program (Combined in 2023) | $625,000 | 2025–2028 |
| Capital Project Locations Sewer Televising & Repairs | $375,000 | 2025–2028 |
| Drainage Study and Resolution Program | $375,000 | 2025–2028 |
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
2 verified contacts for Deerfield WRF, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Deerfield WRF, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Illinois
Buffalo Grove · 4 mi away
7.89 MGD
Skokie · 12 mi away
170 MGD
Itasca · 15 mi away
—
Itasca · 15 mi away
0.9 MGD
Wood Dale · 15 mi away
1.03 MGD
Wood Dale · 16 mi away
0.19 MGD
Addison · 17 mi away
2.24 MGD
Addison · 18 mi away
1.22 MGD
Deerfield WRF: 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 May 18, 2025.