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Star Sewer and Water District

Sewage treatment plant, major discharger, Star, Idaho. NPDES permit ID0023591 expired Apr 30, 2020; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 001 form A1 monthly (37 values), outfall REC form A monthly (7 values), outfall 001 form S twice a year, outfall 001 form Y yearly, outfall REC form S twice a year
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 29 reports late

Limits in force (62)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. centigrademaximum daily averagereport only (deg C)all year001
Temperature, water deg. centigradehighest 7-day averagereport only (deg C)all year001
Temperature, water deg. centigradeinstantaneous maximumreport only (deg C)all year001
Temperature, water deg. centigrademaximum daily averagereport only (deg C)all year001
Temperature, water deg. centigradehighest 7-day averagereport only (deg C)all year001
Temperature, water deg. centigradeinstantaneous maximumreport only (deg C)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≤ 463 lb/dall year001
BOD, 5-day, 20 deg. Cweekly average≤ 694 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≤ 463 lb/dall year001
Solids, total suspendedweekly average≤ 694 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
Nitrogen, ammonia total [as N]monthly averagereport only (lb/d)all year001
Nitrogen, ammonia total [as N]daily maximumreport only (lb/d)all year001
Phosphorus, total [as P]monthly average≤ 4.5 mg/LMay–Sep001
Phosphorus, total [as P]monthly averagereport only (mg/L)Jan, Feb, Mar, Apr, Oct, Nov, Dec001
Phosphorus, total [as P]weekly average≤ 9 mg/LMay–Sep001
Phosphorus, total [as P]weekly averagereport only (mg/L)Jan, Feb, Mar, Apr, Oct, Nov, Dec001
Phosphorus, total [as P]monthly average≤ 69 lb/dMay–Sep001
Phosphorus, total [as P]weekly average≤ 140 lb/dMay–Sep001
Arsenic, total recoverableinstantaneous maximumreport only (mg/L)all year001
Selenium, total recoverableinstantaneous maximumreport only (mg/L)all year001
Nickel, total recoverableinstantaneous maximumreport only (mg/L)all year001
Silver total recoverableinstantaneous maximumreport only (mg/L)all year001
Zinc, total recoverableinstantaneous maximumreport only (mg/L)all year001
Cadmium, total recoverableinstantaneous maximumreport only (mg/L)all year001
Lead, total recoverableinstantaneous maximumreport only (mg/L)all year001
Chromium, total recoverableinstantaneous maximumreport only (mg/L)all year001
Copper, total recoverableinstantaneous maximumreport only (mg/L)all year001
E. coli, MTEC-MFgeometric mean≤ 126 #/100mLall year001
E. coli, MTEC-MFinstantaneous maximumreport only (#/100mL)all year001
Floating solids, waste or visible foam-visualmonthly maximum≤ 0 N=0;Y=1all 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≤ .05 mg/Lall year001
Chlorine, total residualweekly average≤ .05 mg/Lall year001
Chlorine, total residualmonthly average≤ .77 lb/dall year001
Chlorine, total residualweekly average≤ .77 lb/dall year001
Mercury, total recoverableinstantaneous maximumreport only (ug/L)all year001
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year001
Solids, suspended percent removalmonthly average minimum≥ 85 %all year001
Toxicity, Chronictotalreport only (toxic)all year001
Temperature, water deg. centigrademonthly averagereport only (deg C)all yearREC
Temperature, water deg. centigrademonthly maximumreport only (deg C)all yearREC
Nitrogen, ammonia total [as N]monthly maximumreport only (mg/L)all yearREC
Phosphorus, total [as P]monthly maximumreport only (mg/L)all yearREC
Nickel, total recoverableinstantaneous maximumreport only (ug/L)all yearREC
Zinc, total recoverableinstantaneous maximumreport only (ug/L)all yearREC
Lead, total recoverableinstantaneous maximumreport only (ug/L)all yearREC
Copper, total recoverableinstantaneous maximumreport only (ug/L)all yearREC
Chlorine, total residualmonthly maximumreport only (ug/L)all yearREC
Mercury, total recoverableinstantaneous maximumreport only (ug/L)all yearREC
Flow ratemonthly minimumreport only (MGD)all yearREC
Flow ratemonthly averagereport only (MGD)all yearREC

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/ID0023591 · MCP: https://passage-data.com/mcp