Hill-N-Park STP
Greeley, CO · Weld County · Publicly Owned Treatment Works
- Average flow
- 1.79 MGD
- Design flow
- 2.88 MGD
- NPDES permit
- CO0047287
- Administratively continued
- Permit expires
- December 2023
- Population served
- 10,733
- CWNS 2022
Hill-N-Park STP is a publicly owned wastewater treatment works in Greeley, Weld County, Colorado treating an average of 1.79 million gallons per day against a permitted design capacity of 2.88 MGD, serving about 10,733 residents. Treatment on site includes clarifiers, uncovered lagoons. It discharges under NPDES permit CO0047287 (administratively continued), which expires in December 2023, with 5 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
- 5
- Effluent violations
- 3
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Capital improvement projects in Greeley
Greeley's capital improvement plan lists 91 water, sewer and wastewater line items worth $450M starting 2024–2028. The largest budgeted items are shown here.
All water and sewer capital projects in Greeley →
| Project | Budget | Years |
|---|---|---|
| WTRF Primary Treatment Phase 2 | $45,152,756 | 2024–2025 |
| Terry Ranch Water Development | $37,590,000 | 2024–2028 |
| Future Water Acquisition - Phase II | $35,500,000 | 2024–2028 |
| Non-Potable Waterline | $22,539,552 | 2024–2028 |
| Bellvue Pipeline-Gold Hill Segment | $22,065,000 | 2024–2027 |
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
Decision-makers at Hill-N-Park STP.
No verified contacts on file yet
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Nearby wastewater treatment plants in Colorado
Greeley · 5 mi away
9.4 MGD
Milliken · 6 mi away
0.53 MGD
Windsor · 9 mi away
2.85 MGD
Kersey · 10 mi away
0.12 MGD
Johnstown · 13 mi away
0.55 MGD
Galeton · 13 mi away
0.01 MGD
Mead · 17 mi away
0.33 MGD
Berthoud · 17 mi away
1.61 MGD
Hill-N-Park STP: 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 September 11, 2026.