Cashmere STP Facility
2 Riverfront Dr, Cashmere, WA 98815 · Chelan County · Publicly Owned Treatment Works
- Average flow
- 0.42 MGD
- Design flow
- 2.03 MGD
- NPDES permit
- WA0023183
- Administratively continued
- Permit expires
- May 2025
- Population served
- 3,000
- CWNS 2022
Cashmere STP Facility is a publicly owned wastewater treatment works in Cashmere, Chelan County, Washington treating an average of 0.42 million gallons per day against a permitted design capacity of 2.03 MGD, serving about 3,000 residents. It discharges under NPDES permit WA0023183 (administratively continued), which expires in May 2025, with 30 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in March 2025.
Treatment technology
2 treatment structures and unit processes identified at Cashmere STP Facility.
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See the full treatment train at Cashmere STP Facility: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 30
- Effluent violations
- 30
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 Cashmere STP Facility in EPA's ICIS system.
- Formal actions
- 1
- 1 since FY2020
- Penalties assessed
- $4,125
- all cases
- Compliance actions
- $800
- required by EPA orders
- EPA inspections
- 0
- none on record
Latest case · Mar 2025
CITY OF CASHMERE WASTEWATER TREATMENT PLANT - ESA (CWA NPDES)
Administrative order · CWA, NPDES Permit Violations · Final Order With Penalty · Penalty $4,125 · Compliance actions $800
EPA's description of the case:
“On August 28, 2024, Region 10 filed an expedited settlement agreement resolving CWA violations of the City of Cashmere's wastewater permit at its wastewater treatment plant in Cashmere, Washington.…”
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Source: EPA ECHO, civil enforcement case 10-2024-0140.
Full case history with a free Klarifi account
Every action against Cashmere STP Facility with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
1 verified contact for Cashmere STP Facility, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Cashmere STP Facility, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Washington
Wenatchee · 9 mi away
2.86 MGD
Peshastin · 9 mi away
0.05 MGD
Leavenworth · 11 mi away
0.3 MGD
Entiat · 16 mi away
0.1 MGD
Rock Island · 18 mi away
0.06 MGD
Leavenworth · 24 mi away
0.02 MGD
Quincy · 29 mi away
0.02 MGD
Chelan · 30 mi away
0.75 MGD
Cashmere STP Facility: 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 April 13, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biosolids · Filter press · all terms