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Hayden Area Regional Sewer Board

Sewage treatment plant, major discharger, Hayden, Idaho. NPDES permit ID0026590, in force until May 30, 2029. Last 12 months: over a limit once (last December 2025). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: form M monthly (104 values), form P monthly (4 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 3 of 24 reports late

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

Period endingParameterReportedLimitOver by
December 2025E. coli, instantaneous maximum1986.3 #/100mL≤ 406 #/100mL389%

Limits in force (134)

ParameterStatisticLimitMonths
Temperature, water deg. centigrademonthly averagereport only (deg C)all year
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
Oxygen, dissolved [DO]monthly averagereport only (mg/L)all year
Oxygen, dissolved [DO]instantaneous minimumreport only (mg/L)all year
Oxygen, dissolved [DO]monthly averagereport only (mg/L)all year
Oxygen, dissolved [DO]instantaneous minimumreport only (mg/L)all year
pHinstantaneous minimum≥ 6.5 SUall year
pHinstantaneous maximum≤ 9 SUall year
pHinstantaneous minimumreport only (SU)all year
pHinstantaneous maximumreport only (SU)all year
pHinstantaneous minimumreport only (SU)all year
pHinstantaneous maximumreport only (SU)all year
Alkalinity, total [as CaCO3]monthly averagereport only (mg/L)all year
Alkalinity, total [as CaCO3]daily maximumreport only (mg/L)all year
Alkalinity, total [as CaCO3]monthly averagereport only (mg/L)all year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 601 lb/dall year
Solids, total suspendedweekly average≤ 901 lb/dall year
Solids, total suspendeddaily maximumreport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)Feb–Oct
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)Jan, Nov, Dec
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Jan, Nov, Dec
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly averagereport only (lb/d)Feb–Oct
Nitrogen, ammonia total [as N]monthly averagereport only (lb/d)Jan, Nov, Dec
Nitrogen, ammonia total [as N]average≤ 77.4 lb/dOct
Nitrogen, ammonia total [as N]monthly averagereport only (lb/d)all year
Nitrogen, ammonia total [as N]daily maximumreport only (lb/d)Jan, Nov, Dec
Nitrogen, ammonia total [as N]daily maximumreport only (lb/d)all year
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (mg/L)Feb–Oct
Phosphorus, total [as P]monthly averagereport only (mg/L)Jan, Nov, Dec
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]daily maximumreport only (mg/L)Jan, Nov, Dec
Phosphorus, total [as P]weekly averagereport only (mg/L)all year
Phosphorus, total [as P]daily maximumreport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (lb/d)Feb–Oct
Phosphorus, total [as P]monthly averagereport only (lb/d)Jan, Nov, Dec
Phosphorus, total [as P]average≤ 1.33 lb/dOct
Phosphorus, total [as P]monthly average≤ 30 lb/dall year
Phosphorus, total [as P]monthly averagereport only (lb/d)all year
Phosphorus, total [as P]daily maximumreport only (lb/d)Jan, Nov, Dec
Phosphorus, total [as P]weekly average≤ 59 lb/dall year
Phosphorus, total [as P]daily maximumreport only (lb/d)all year
Phosphorus, total [as P]monthly averagereport only (ug/L)all year
Phosphorus, total [as P]daily maximumreport only (ug/L)all year
Carbon, dissolved organic [as C]monthly averagereport only (mg/L)all year
Hardness, total [as CaCO3]monthly averagereport only (mg/L)all year
Hardness, total [as CaCO3]daily maximumreport only (mg/L)all year
Hardness, total [as CaCO3]monthly averagereport only (mg/L)all year
Hardness, total [as CaCO3]daily maximumreport only (mg/L)all year
Calcium, dissolved [as Ca]monthly averagereport only (mg/L)all year
Magnesium, dissolved [as Mg]monthly averagereport only (mg/L)all year
Sodium, dissolved [as Na]monthly averagereport only (mg/L)all year
Potassium, dissolved [as K]monthly averagereport only (mg/L)all year
Chloride [as Cl]monthly averagereport only (mg/L)all year
Sulfate, total [as SO4]monthly averagereport only (mg/L)all year
Cadmium, total [as Cd]monthly averagereport only (ug/L)all year
Cadmium, total [as Cd]daily maximumreport only (ug/L)all year
Copper, dissolved [as Cu]monthly averagereport only (ug/L)all year
Copper, dissolved [as Cu]daily maximumreport only (ug/L)all year
Copper, dissolved [as Cu]monthly averagereport only (ug/L)all year
Copper, dissolved [as Cu]daily maximumreport only (ug/L)all year
Copper, total [as Cu]monthly averagereport only (ug/L)all year
Copper, total [as Cu]daily maximumreport only (ug/L)all year
Lead, dissolved [as Pb]monthly averagereport only (ug/L)all year
Lead, dissolved [as Pb]daily maximumreport only (ug/L)all year
Lead, total [as Pb]monthly average≤ 2.97 ug/Lall year
Lead, total [as Pb]daily maximum≤ 4.33 ug/Lall year
Lead, total [as Pb]monthly average≤ .059 lb/dall year
Lead, total [as Pb]daily maximum≤ .0887 lb/dall year
Silver, total [as Ag]monthly averagereport only (ug/L)all year
Silver, total [as Ag]daily maximumreport only (ug/L)all year
Zinc, dissolved [as Zn]monthly averagereport only (ug/L)all year
Zinc, dissolved [as Zn]daily maximumreport only (ug/L)all year
Zinc, total [as Zn]monthly average≤ 119.9 ug/Lall year
Zinc, total [as Zn]daily maximum≤ 175 ug/Lall year
Zinc, total [as Zn]monthly average≤ 2.4 lb/dall year
Zinc, total [as Zn]daily maximum≤ 3.5 lb/dall year
Chlorophyll Amonthly averagereport only (ug/L)all year
Chlorophyll Adaily maximumreport only (ug/L)all year
Chlorophyll Amonthly averagereport only (ug/L)all year
Chlorophyll Adaily maximumreport only (ug/L)all year
Nitrogen, total Kjeldahlmonthly averagereport only (mg/L)all year
Nitrogen, total Kjeldahldaily maximumreport only (mg/L)all year
Chlorine, total residualmonthly average≤ 500 ug/LJan, Feb, Mar, Apr, May, Oct, Nov, Dec
Chlorine, total residualweekly average≤ 750 ug/LJan, Feb, Mar, Apr, May, Oct, Nov, Dec
Chlorine, total residualmonthly average≤ 10 lb/dJan, Feb, Mar, Apr, May, Oct, Nov, Dec
Chlorine, total residualweekly average≤ 15 lb/dJan, Feb, Mar, Apr, May, Oct, Nov, Dec
Chlorine, total residualmonthly average≤ 500 ug/LJun–Sep
Chlorine, total residualweekly average≤ 750 ug/LJun–Sep
Chlorine, total residualmonthly average≤ 10 lb/dJun–Sep
Chlorine, total residualweekly average≤ 15 lb/dJun–Sep
Chlorine, total residualmonthly average≤ 119 ug/LJun–Sep
Chlorine, total residualdaily maximum≤ 629 ug/LJun–Sep
Chlorine, total residualmonthly average≤ 2.38 lb/dJun–Sep
Chlorine, total residualdaily maximum≤ 12.6 lb/dJun–Sep
E. colimonthly average≤ 126 #/100mLall year
E. coliinstantaneous maximum≤ 406 #/100mLall year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
PER-AND POLYFLUOROALKYL SUBSTANCESdaily maximumreport only (ng/L)Feb, May, Aug, Nov
Enterococcimonthly average≤ 35 #/100mLall year
Enterococciinstantaneous maximum≤ 130 #/100mLall year
Mercury, total [as Hg]monthly averagereport only (ug/L)Mar, Jun, Sep, Dec
Mercury, total [as Hg]daily maximumreport only (ug/L)Mar, Jun, Sep, Dec
Polychlorinated biphenyls [PCB] pg/Ldaily maximumreport only (pg/L)Feb, May, Aug, Nov
Polychlorinated biphenyls [PCB] pg/Ldaily maximumreport only (pg/L)Feb, May, Aug, Nov
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall year
BOD, carbonaceous [5 day, 20 C]weekly average≤ 40 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 112 lb/dFeb, Mar, Apr, May, Jun, Jul, Aug, Oct
BOD, carbonaceous [5 day, 20 C]average≤ 77.4 lb/dOct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 500 lb/dJan, Nov, Dec
BOD, carbonaceous [5 day, 20 C]weekly average≤ 206 lb/dFeb, Mar, Apr, May, Jun, Jul, Aug, Oct
BOD, carbonaceous [5 day, 20 C]weekly average≤ 801 lb/dJan, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year
BOD, carbonaceous, percent removalmonthly average minimum≥ 85 %all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year
IC25 Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average≤ 34.7 Ratio (alert, not enforceable)Jan, Apr, Jul, Oct
IC25 Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiadaily maximum≤ 34.7 Ratio (alert, not enforceable)Jan, Apr, Jul, Oct
IC25 Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelasmonthly average≤ 31.7 Ratio (alert, not enforceable)Jan, Apr, Jul, Oct
IC25 Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelasdaily maximum≤ 34.7 Ratio (alert, not enforceable)Jan, Apr, Jul, Oct

How strict are these limits?

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/ID0026590 · MCP: https://passage-data.com/mcp