Huntley - West WWTP
Southeast Of Marengo Rd And Coyne Road, Huntley, IL 60142 · Mchenry County · Publicly Owned Treatment Works
- Average flow
- 1.11 MGD
- Design flow
- —
- NPDES permit
- ILL070688
- Effective
- Permit expires
- December 2030
- Population served
- 13,628
- CWNS 2022
Huntley - West WWTP is a publicly owned wastewater treatment works in Huntley, Mchenry County, Illinois treating an average of 1.11 million gallons per day, serving about 13,628 residents. It discharges under NPDES permit ILL070688 (effective), which expires in December 2030, with 0 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in May 2024.
Treatment technology
2 treatment structures and unit processes identified at Huntley - West WWTP.
Available with a free Klarifi account
See the full treatment train at Huntley - West WWTP: 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.
EPA enforcement history
Federal civil enforcement cases, compliance inspections and informal actions recorded for Huntley - West WWTP in EPA's ICIS system.
- Formal actions
- 1
- 1 since FY2020
- Penalties assessed
- $700
- all cases
- Compliance actions
- $1,000
- required by EPA orders
- EPA inspections
- 0
- none on record
Latest case · May 2024
Huntley, IL CWA 309G2E AO For Class I Penalties Biosolids Expedited Settlement Program
Administrative order · CWA, NPDES Permit Violations · Final Order With Penalty · Penalty $700 · Compliance actions $1,000
EPA's description of the case:
“Facility analyzed biosolids improperly. The reported values are greater than the4 0 CFR 503.13(b)(1) ceiling limits.”
Source: EPA ECHO, civil enforcement case 07-2024-0052.
Full case history with a free Klarifi account
Every action against Huntley - West WWTP with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Capital improvement projects in Huntley
Huntley's capital improvement plan lists 59 water, sewer and wastewater line items worth $13M starting 2025–2029. The largest budgeted items are shown here.
All water and sewer capital projects in Huntley →
| Project | Budget | Years |
|---|---|---|
| East and West WWTP Upgrades | $2,500,000 | 2026–2026 |
| Water Well #13 Water Treatment Plant | $1,897,005 | 2025–2025 |
| MXU and Water Meter Replacement Program | $1,500,000 | 2025–2029 |
| Water Main Replacement Program | $1,095,000 | 2026–2029 |
| Pull and Service Well Pumps | $950,000 | 2026–2029 |
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
14 verified contacts for Huntley - West WWTP, with validated emails and direct phone numbers.
Unlock 14 verified contacts (11 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Huntley - West WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Illinois
Huntley · 1 mi away
1.04 MGD
Lakewood · 5 mi away
0.36 MGD
Pingree Grove · 6 mi away
0.78 MGD
Lake In The Hills · 7 mi away
2.56 MGD
Algonquin · 8 mi away
2.89 MGD
Woodstock · 9 mi away
1.24 MGD
Crystal Lake · 9 mi away
0.44 MGD
East Dundee · 10 mi away
1.13 MGD
Huntley - West WWTP: 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 March 9, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Anaerobic digester · Lift station · all terms