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Princeton-Hampton Water & Sewer District

Sewage treatment plant, Princeton, Idaho. NPDES permit ID0028436 expired Mar 31, 2025; its limits still apply. Last 12 months: over a limit once (last January 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 001 form F monthly (4 values), outfall 001 form M monthly (25 values), outfall REC1 form Q quarterly (6 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 29 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
January 2026Solids, suspended percent removal, monthly average minimum79 %≥ 85 %40%

Limits in force (39)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. centigrademonthly averagereport only (deg C)all year001
Temperature, water deg. centigradedaily maximumreport only (deg C)all year001
Septage discharged to treatment fac.monthly totalreport only (gal)all year001
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year001
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year001
BOD, 5-day, 20 deg. Cmonthly average≤ 5 lb/dall year001
BOD, 5-day, 20 deg. Cweekly average≤ 7.5 lb/dall year001
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year001
pHinstantaneous minimum≥ 6.5 SUall year001
pHinstantaneous maximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspendedweekly average≤ 45 mg/Lall year001
Solids, total suspendedmonthly average≤ 5 lb/dall year001
Solids, total suspendedweekly average≤ 7.5 lb/dall year001
Solids, total suspendedmonthly averagereport only (mg/L)all year001
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year001
E. coli, MTEC-MFmonthly geometric mean≤ 126 #/100mLall year001
E. coli, MTEC-MFinstantaneous maximumreport only (#/100mL)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Chlorine, total residualmonthly average≤ .097 mg/LJul–Nov001
Chlorine, total residualmonthly average≤ .39 mg/LJan, Feb, Mar, Apr, May, Jun, Dec001
Chlorine, total residualdaily maximum≤ .2 mg/LJul–Nov001
Chlorine, total residualdaily maximum≤ .77 mg/LJan, Feb, Mar, Apr, May, Jun, Dec001
Chlorine, total residualmonthly average≤ .016 lb/dJul–Nov001
Chlorine, total residualmonthly average≤ .064 lb/dJan, Feb, Mar, Apr, May, Jun, Dec001
Chlorine, total residualdaily maximum≤ .033 lb/dJul–Nov001
Chlorine, total residualdaily maximum≤ .13 lb/dJan, Feb, Mar, Apr, May, Jun, Dec001
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year001
Solids, suspended percent removalmonthly average minimum≥ 85 %all year001
Temperature, water deg. centigrademonthly averagereport only (deg C)all yearREC1
Temperature, water deg. centigradedaily maximumreport only (deg C)all yearREC1
pHinstantaneous minimumreport only (SU)all yearREC1
pHinstantaneous maximumreport only (SU)all yearREC1
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)Mar, Jun, Sep, DecREC1
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Mar, Jun, Sep, DecREC1

How strict are these limits?

Cited limits by parameter: Idaho's rules and the federal ones.

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/ID0028436 · MCP: https://passage-data.com/mcp