Kootenai-Ponderay WWTP
511 Whiskey Jack Rd, Sandpoint, ID 83864 · Bonner County · Publicly Owned Treatment Works
- Average flow
- 0.38 MGD
- Design flow
- 0.4 MGD
- NPDES permit
- ID0021229
- Administratively continued
- Permit expires
- August 2023
- Population served
- 2,792
- CWNS 2022
Kootenai-Ponderay WWTP is a publicly owned wastewater treatment works in Sandpoint, Bonner County, Idaho treating an average of 0.38 million gallons per day against a permitted design capacity of 0.4 MGD, serving about 2,792 residents. It discharges under NPDES permit ID0021229 (administratively continued), which expires in August 2023, with 2 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Kootenai-Ponderay WWTP.
Available with a free Klarifi account
See the full treatment train at Kootenai-Ponderay WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 2
- Effluent violations
- 2
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Capital improvement projects in Sandpoint
Sandpoint's capital improvement plan lists 7 water, sewer and wastewater line items worth $6M starting 2026–2026. The largest budgeted items are shown here.
All water and sewer capital projects in Sandpoint →
| Project | Budget | Years |
|---|---|---|
| Watermain Projects | $2,570,000 | 2026–2026 |
| Lower Diversion Upgrades | $1,265,000 | 2026–2026 |
| Wastewater Main Line Replacement | $620,000 | 2026–2026 |
| Sewer Lift Station Replacements | $400,000 | 2026–2026 |
| Wastewater Treatment Facility Phased Reconstruction | $300,000 | 2026–2026 |
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 Kootenai-Ponderay WWTP.
No verified contacts on file yet
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Nearby wastewater treatment plants in Idaho
Dover · 7 mi away
0.06 MGD
Priest River · 21 mi away
0.13 MGD
Bonners Ferry · 28 mi away
0.28 MGD
Moyie Springs · 32 mi away
0.06 MGD
Hayden · 41 mi away
1.24 MGD
Smelterville · 55 mi away
0.05 MGD
Smelterville · 55 mi away
2.04 MGD
Worley · 65 mi away
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Kootenai-Ponderay 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 October 8, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Centrate · Ozonation · all terms