Sterling City Of
15956 County Road 370, Sterling, CO 80751 · Logan County · Publicly Owned Treatment Works
- Average flow
- 1.4 MGD
- Design flow
- 2.68 MGD
- NPDES permit
- CO0026247
- Administratively continued
- Permit expires
- February 2017
- Population served
- 13,998
- CWNS 2022
Sterling City Of is a publicly owned wastewater treatment plant in Sterling, Logan County, Colorado treating an average of 1.4 million gallons per day against a permitted design capacity of 2.68 MGD, serving about 13,998 residents. It discharges under NPDES permit CO0026247 (administratively continued), which expires in February 2017, with 9 recorded violations in the last three years.
Treatment technology
2 treatment structures and unit processes identified at Sterling City Of.
Available with a free Klarifi account
See the full treatment train at Sterling City Of: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 9
- Effluent violations
- 7
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 Sterling City Of in EPA's ICIS system.
- Formal actions
- 0
- none on record
- EPA inspections
- 2
- latest Oct 2021
No formal federal enforcement case is on record for this plant.
Full case history with a free Klarifi account
Every action against Sterling City Of with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
Decision-makers at Sterling City Of.
No verified contacts on file yet
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Nearby wastewater treatment plants in Colorado
Julesburg · 51 mi away
0.23 MGD
Wray · 63 mi away
0.34 MGD
Kersey · 77 mi away
0.13 MGD
Galeton · 77 mi away
0.0068 MGD
Keenesburg · 83 mi away
0.17 MGD
Greeley · 83 mi away
8.34 MGD
Greeley · 87 mi away
1.58 MGD
Milliken · 93 mi away
0.46 MGD
Sterling 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 October 26, 2026; facility record last updated September 25, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Anaerobic digester · Lift station · all terms