Princeton-Hampton WWTP
3409 Id-6, Princeton, ID 83857 · Latah County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 0.01 MGD
- NPDES permit
- ID0028436
- Administratively continued
- Permit expires
- March 2025
- Population served
- —
- CWNS 2022
Princeton-Hampton WWTP is a publicly owned wastewater treatment works in Princeton, Latah County, Idaho. It discharges under NPDES permit ID0028436 (administratively continued), which expires in March 2025, with 4 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in May 2012.
Treatment technology
One treatment structure or unit process identified at Princeton-Hampton WWTP.
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See the full treatment train at Princeton-Hampton WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 4
- Effluent violations
- 4
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 Princeton-Hampton WWTP in EPA's ICIS system.
- Formal actions
- 1
- 0 since FY2020
- Compliance actions
- $14,580
- required by EPA orders
- EPA inspections
- 0
- none on record
Latest case · May 2012
PRINCETON-HAMPTON WATER AND SEWER DISTRICT
Administrative order · CWA, NPDES Discharge without a Permit · Final Order No Penalty · Compliance actions $14,580
EPA's description of the case:
“Pursuant to Section 309(a) of the Clean Water Act (CWA), EPA Region 10 has issued a compliance order by consent to the Princeton-Hampton Water & Sewer District (District) located in Princeton, Idaho…”
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Source: EPA ECHO, civil enforcement case 10-2012-0123.
Full case history with a free Klarifi account
Every action against Princeton-Hampton WWTP with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
Decision-makers at Princeton-Hampton WWTP.
No verified contacts on file yet
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Troy · 13 mi away
0.07 MGD
Moscow · 15 mi away
1.84 MGD
Deary · 15 mi away
0.14 MGD
Tensed · 17 mi away
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Saint Maries · 19 mi away
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Deary · 22 mi away
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Princeton-Hampton 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 November 5, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biosolids · Filter press · all terms