Lake County Public Works Department
800 Krause Drive, Buffalo Grove, IL 60089 · Cook County · Publicly Owned Treatment Works
- Average flow
- 9.09 MGD
- Design flow
- —
- NPDES permit
- ILL022055
- Effective
- Permit expires
- December 2030
- Population served
- 72,507
- CWNS 2022
Lake County Public Works Department is a publicly owned wastewater treatment plant in Buffalo Grove, Cook County, Illinois treating an average of 9.09 million gallons per day, serving about 72,507 residents. It discharges under NPDES permit ILL022055 (effective), which expires in December 2030, with 0 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Lake County Public Works Department.
Available with a free Klarifi account
See the full treatment train at Lake County Public Works Department: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 0
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
5 verified contacts for Lake County Public Works Department, with validated emails and direct phone numbers.
Unlock 5 verified contacts (2 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Lake County Public Works Department, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Illinois
Deerfield · 4 mi away
2.4 MGD
Itasca · 13 mi away
—
Itasca · 13 mi away
1.65 MGD
Wood Dale · 14 mi away
1.58 MGD
Skokie · 15 mi away
205.79 MGD
Wood Dale · 15 mi away
0.27 MGD
Roselle · 16 mi away
0.75 MGD
Cary · 16 mi away
1.37 MGD
Lake County Public Works Department: 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 18, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Oxidation ditch · Anaerobic digester · all terms