Crest Hill West Stp, City Of
Crest Hill, IL · Will County · Publicly Owned Treatment Works
- Average flow
- 0.47 MGD
- Design flow
- —
- NPDES permit
- ILL021121
- Effective
- Permit expires
- December 2030
- Population served
- 10,690
- CWNS 2022
Crest Hill West Stp, City Of is a publicly owned wastewater treatment works in Crest Hill, Will County, Illinois treating an average of 0.47 million gallons per day, serving about 10,690 residents. Treatment on site includes clarifiers, uncovered lagoons, biogas silos. It discharges under NPDES permit ILL021121 (effective), which expires in December 2030, with 151 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Compliance snapshot (last 3 years)
- Total violations
- 151
- Effluent violations
- 21
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Capital improvement projects in Crest Hill
Crest Hill's capital improvement plan lists 9 water, sewer and wastewater line items worth $23M starting 2024–2024. The largest budgeted items are shown here.
All water and sewer capital projects in Crest Hill →
| Project | Budget | Years |
|---|---|---|
| West Plant Rehab | $15,830,000 | 2024–2025 |
| Watermain Replacement | $4,900,000 | 2024–2025 |
| Engineering | $1,050,000 | 2024–2025 |
| Watermain Design | $1,025,000 | 2024–2025 |
| Capital Equipment | $200,000 | 2024–2025 |
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 Crest Hill West Stp, City Of, 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 Crest Hill West Stp, City Of, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Illinois
Crest Hill · 3 mi away
1.19 MGD
Joliet · 4 mi away
—
Lockport · 4 mi away
—
Plainfield · 5 mi away
4.34 MGD
Joliet · 6 mi away
0.11 MGD
Joliet · 7 mi away
6.67 MGD
Bolingbrook · 7 mi away
2.52 MGD
Romeoville · 8 mi away
4.81 MGD
Crest Hill West Stp, City Of: 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 March 28, 2025.