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Ashland, City of

Sewage treatment plant, major discharger, Ashland, Oregon. NPDES permit OR0026255, in force until Jan 31, 2027. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form A monthly (6 values), outfall 001 form G monthly (4 values), outfall 002 form A monthly (6 values), outfall 004 form A monthly (26 values)
Renewal application due
Aug 4, 2026 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
9 values over a limit, 0 required values missing, 0 of 70 reports late

Limits in force (72)

ParameterStatisticLimitMonthsOutfall
pHdaily minimum≥ 6.4 SUall year001
pHdaily maximum≤ 8.6 SUall year001
pHmonthly minimumreport only (SU)all year001
pHmonthly maximumreport only (SU)all year001
Solids, total suspendedmonthly averagereport only (mg/L)all year001
Nitrogen, ammonia total [as N]monthly average≤ 2.1 mg/LJan, Feb, Mar, Apr, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 1.3 mg/LMay–Nov001
Nitrogen, ammonia total [as N]daily maximum≤ 6.1 mg/LJan, Feb, Mar, Apr, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 3.8 mg/LMay–Nov001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year001
pHdaily minimum≥ 6.4 SUall year002
pHdaily maximum≤ 8.6 SUall year002
Nitrogen, ammonia total [as N]monthly average≤ 1.3 mg/LMay–Nov002
Nitrogen, ammonia total [as N]monthly average≤ 2.1 mg/LJan, Feb, Mar, Apr, Dec002
Nitrogen, ammonia total [as N]daily maximum≤ 3.8 mg/LMay–Nov002
Nitrogen, ammonia total [as N]daily maximum≤ 6.1 mg/LJan, Feb, Mar, Apr, Dec002
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002
Temperature, water deg. centigradedaily maximumreport only (deg C)all year004
Temperature, water deg. centigrademaximum 7-day averagereport only (deg C)all year004
Solids, total suspendedmonthly average≤ 10 mg/LMay–Nov004
Solids, total suspendedmonthly average≤ 30 mg/LJan, Feb, Mar, Apr, Dec004
Solids, total suspendedmonthly average≤ 96 lb/dMay–Nov004
Solids, total suspendedmonthly average≤ 400 lb/dJan, Feb, Mar, Apr, Dec004
Solids, total suspendeddaily maximum≤ 480 lb/dMay–Nov004
Solids, total suspendeddaily maximum≤ 1500 lb/dJan, Feb, Mar, Apr, Dec004
Solids, total suspendedmaximum weekly average≤ 45 mg/LJan, Feb, Mar, Apr, Dec004
Solids, total suspendedmaximum weekly average≤ 15 mg/LMay–Nov004
Solids, total suspendedmaximum weekly average≤ 920 lb/dJan, Feb, Mar, Apr, Dec004
Solids, total suspendedmaximum weekly average≤ 180 lb/dMay–Nov004
Nitrogen, ammonia total [as N]monthly average≤ 45 lb/dMay–Nov004
Phosphorus, total [as P]monthly averagereport only (mg/L)May–Oct004
Phosphorus, total [as P]daily maximumreport only (mg/L)May–Oct004
Phosphorus, total [as P]monthly average≤ 2 lb/dMay–Oct004
Hardness, total [as CaCO3]daily maximumreport only (mg/L)all year004
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year004
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year004
E. colimonthly geometric mean≤ 126 #/100mLall year004
E. colidaily maximum≤ 406 #/100mLall year004
E. colimonthly geometric mean≤ 126 #/100mLall year004
E. colidaily maximumreport only (#/100mL)all year004
Excess thermal loadmaximum 7-day average≤ 5.1 mkcal/dayJan004
Excess thermal loadmaximum 7-day average≤ 5.4 mkcal/dayFeb004
Excess thermal loadmaximum 7-day average≤ 5.6 mkcal/dayMar004
Excess thermal loadmaximum 7-day average≤ 5 mkcal/dayApr004
Excess thermal loadmaximum 7-day average≤ 6.4 mkcal/dayMay004
Excess thermal loadmaximum 7-day average≤ 6.3 mkcal/dayJun004
Excess thermal loadmaximum 7-day average≤ 7 mkcal/dayJul004
Excess thermal loadmaximum 7-day average≤ 7.7 mkcal/dayAug004
Excess thermal loadmaximum 7-day average≤ 2.8 mkcal/daySep004
Excess thermal loadmaximum 7-day average≤ 2 mkcal/dayOct004
Excess thermal loadmaximum 7-day average≤ 3.1 mkcal/dayNov004
Excess thermal loadmaximum 7-day average≤ 4.4 mkcal/dayDec004
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/LJan, Feb, Mar, Apr, Dec004
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/LMay–Jul004
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/LAug–Nov004
BOD, carbonaceous [5 day, 20 C]monthly average≤ 400 lb/dJan, Feb, Mar, Apr, Dec004
BOD, carbonaceous [5 day, 20 C]monthly average≤ 113 lb/dMay–Jul004
BOD, carbonaceous [5 day, 20 C]monthly average≤ 59 lb/dAug–Nov004
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 1500 lb/dJan, Feb, Mar, Apr, Dec004
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 630 lb/dMay–Jul004
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 630 lb/dAug–Nov004
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 40 mg/LJan, Feb, Mar, Apr, Dec004
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 15 mg/LMay–Jul004
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 15 mg/LAug–Nov004
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 920 lb/dJan, Feb, Mar, Apr, Dec004
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 350 lb/dMay–Jul004
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 350 lb/dAug–Nov004
Solids, suspended percent removalmonthly average minimum≥ 85 %all year004
Carbonaceous oxygen demand, % removalmonthly average minimum≥ 85 %all year004

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/OR0026255 · MCP: https://passage-data.com/mcp