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Huntington, City of

Sewage treatment plant, Huntington, Oregon. NPDES permit OR0020052 expired Aug 31, 2026; its limits still apply. Last 12 months: over a limit 22 times (last September 2026), 5 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (28 values), form G monthly (6 values), form Q quarterly (1 value), form RW monthly (3 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
114 values over a limit, 55 required values missing, 13 of 40 reports late

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

All 22 values over a limit
Period endingParameterReportedLimitOver by
October 2025Solids, suspended percent removal, monthly average minimum83 %≥ 85 %13%
October 2025Solids, total suspended, monthly average39.5 mg/L≤ 30 mg/L32%
November 2025Solids, total suspended, monthly average35 mg/L≤ 30 mg/L17%
November 2025Solids, total suspended, weekly average59 mg/L≤ 45 mg/L31%
January 2026BOD, 5-day, 20 deg. C, monthly average18.1 lb/d≤ 18 lb/d1%
January 2026BOD, 5-day, 20 deg. C, monthly average43 mg/L≤ 30 mg/L43%
January 2026BOD, 5-day, 20 deg. C, weekly average31.2 lb/d≤ 26 lb/d20%
January 2026BOD, 5-day, 20 deg. C, weekly average72 mg/L≤ 45 mg/L60%
January 2026BOD, 5-day, percent removal, monthly average minimum80 %≥ 85 %33%
January 2026Nitrogen, ammonia total [as N], daily maximum12.9 mg/L≤ 6.9 mg/L87%
January 2026Nitrogen, ammonia total [as N], monthly average10.455 mg/L≤ 2.8 mg/L273%
February 2026Nitrogen, ammonia total [as N], daily maximum7.41 mg/L≤ 6.9 mg/L7%
February 2026Nitrogen, ammonia total [as N], monthly average5.285 mg/L≤ 2.8 mg/L89%
March 2026Nitrogen, ammonia total [as N], daily maximum7.8 mg/L≤ 6.9 mg/L13%
March 2026Nitrogen, ammonia total [as N], monthly average4.66 mg/L≤ 2.8 mg/L66%
March 2026Solids, total suspended, monthly average38.5 mg/L≤ 30 mg/L28%
May 2026Phosphorus, total [as P], monthly average1.13 lb/d≤ .64 lb/d77%
June 2026Phosphorus, total [as P], monthly average1.1 lb/d≤ .64 lb/d72%
July 2026Phosphorus, total [as P], monthly average.835 lb/d≤ .64 lb/d30%
August 2026E. coli, daily maximum1880 #/100mL≤ 406 #/100mL363%
August 2026E. coli, monthly geometric mean150.2 #/100mL≤ 126 #/100mL19%
September 2026Phosphorus, total [as P], monthly average1.146 lb/d≤ .64 lb/d79%

Limits in force (41)

ParameterStatisticLimitMonths
Temperature, water deg. centigrademonthly averagereport only (deg C)all year
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
Temperature, water deg. centigrademonthly averagereport only (deg C)all year
Temperature, water deg. centigrademonthly maximumreport only (deg C)all year
Temperature, water deg. centigrademaximum 7-day averagereport only (deg C)all year
Temperature, water deg. centigrademaximum 7-day averagereport only (deg C)all year
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 18 lb/dall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 35 lb/dall year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 26 lb/dall year
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
pHmonthly minimumreport only (SU)all year
pHmonthly maximumreport only (SU)all year
Alkalinity, total [as CaCO3]quarterly maximumreport only (mg/L)all year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedmonthly average≤ 18 lb/dall year
Solids, total suspendeddaily maximum≤ 35 lb/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedweekly average≤ 26 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 1.5 mg/LMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 2.8 mg/LJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]daily maximum≤ 3.3 mg/LMay–Oct
Nitrogen, ammonia total [as N]daily maximum≤ 6.9 mg/LJan, Feb, Mar, Apr, Nov, Dec
Phosphorus, total [as P]monthly averagereport only (mg/L)May–Sep
Phosphorus, total [as P]daily maximumreport only (mg/L)May–Sep
Phosphorus, total [as P]quarterly maximumreport only (mg/L)Jan, Feb, Mar, Apr, Oct, Nov, Dec
Phosphorus, total [as P]monthly average≤ .64 lb/dMay–Sep
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
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/OR0020052 · MCP: https://passage-data.com/mcp