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Grants Pass, City of

Sewage treatment plant, major discharger, Grants Pass, Oregon. NPDES permit OR0028843 expired Sep 30, 2014; its limits still apply. Last 12 months: no values over a limit, 1 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (47 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
3 values over a limit, 11 required values missing, 2 of 12 reports late

Limits in force (72)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year
Temperature, water deg. fahrenheit7-day averagereport only (deg F)Apr–Oct
Flow ratedaily averagereport only (cfs)all year
Flow rate7-day averagereport only (cfs)all year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)May–Oct
BOD, 5-day, 20 deg. Cmonthly averagereport only (lb/d)May–Oct
BOD, 5-day, 20 deg. Cdaily maximumreport only (lb/d)May–Oct
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, 5-day, 20 deg. Cmonthly average≤ 1600 lb/dJan, Feb, Mar, Apr, Nov, Dec
BOD, 5-day, 20 deg. Cdaily maximum≤ 3200 lb/dJan, Feb, Mar, Apr, Nov, Dec
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, 5-day, 20 deg. Cmonthly average≤ 1600 lb/dJan, Feb, Mar, Apr, Nov, Dec
BOD, 5-day, 20 deg. Cdaily maximumreport only (lb/d)Jan, Feb, Mar, Apr, Nov, Dec
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, 5-day, 20 deg. Cweekly average≤ 2400 lb/dJan, Feb, Mar, Apr, Nov, Dec
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
pHdaily minimumreport only (SU)all year
pHdaily maximumreport only (SU)all year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedmonthly average≤ 30 mg/LJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedmonthly average≤ 10 mg/LMay–Oct
Solids, total suspendedmonthly average≤ 1600 lb/dJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedmonthly average≤ 670 lb/dMay–Oct
Solids, total suspendeddaily maximum≤ 3200 lb/dJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendeddaily maximum≤ 1300 lb/dMay–Oct
Solids, total suspendedmonthly average≤ 10 mg/LMay–Oct
Solids, total suspendedmonthly average≤ 30 mg/LJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedmonthly average≤ 670 lb/dMay–Oct
Solids, total suspendedmonthly average≤ 1600 lb/dJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendeddaily maximumreport only (lb/d)May–Oct
Solids, total suspendeddaily maximumreport only (lb/d)Jan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedweekly average≤ 45 mg/LJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedweekly average≤ 15 mg/LMay–Oct
Solids, total suspendedweekly average≤ 2400 lb/dJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedweekly average≤ 1000 lb/dMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 21 mg/LJun
Nitrogen, ammonia total [as N]monthly average≤ 16.8 mg/LAug
Nitrogen, ammonia total [as N]monthly average≤ 9.6 mg/LSep
Nitrogen, ammonia total [as N]monthly average≤ 10.4 mg/LJul
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)Jan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)May
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)Oct
Nitrogen, ammonia total [as N]daily maximum≤ 34.7 mg/LJun
Nitrogen, ammonia total [as N]daily maximum≤ 36 mg/LAug
Nitrogen, ammonia total [as N]daily maximum≤ 21.3 mg/LSep
Nitrogen, ammonia total [as N]daily maximum≤ 21.7 mg/LJul
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)May–Oct
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)May–Oct
Phosphorus, total [as P]monthly averagereport only (mg/L)May–Oct
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
E. colimonthly geometric mean≤ 126 #/100mLall year
E. colidaily maximum≤ 406 #/100mLall year
E. colimonthly geometric mean≤ 126 #/100mLall year
E. colidaily maximumreport only (#/100mL)all year
Excess thermal load7-day averagereport only (mkcal/day)Apr–Oct
Ultraviolet light dosagemonthly averagereport only (mW-sec/cm2)all year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/LMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 500 lb/dMay–Oct
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 1000 lb/dMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/LMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 500 lb/dMay–Oct
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (lb/d)May–Oct
BOD, carbonaceous [5 day, 20 C]weekly average≤ 15 mg/LMay–Oct
BOD, carbonaceous [5 day, 20 C]weekly average≤ 750 lb/dMay–Oct
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year

How strict are these limits?

Cited limits by parameter: Oregon'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/OR0028843 · MCP: https://passage-data.com/mcp