NPDES permit OR0026255 · Major POTW · effective, expires 2027-01-31 · EPA's file as of 2026-09-19
Check this month's numbers before you fileLast period with anything received: 2026-08-31.
Reports are due about 15 days after each monitoring period ends (the most common figure among OR permits in EPA's filings — check your permit).
| Outfall | Parameter | Statistic | Limit | Months |
|---|---|---|---|---|
| 001 | pH | DAILY MN | >= 6.4 SU | all year |
| 001 | pH | DAILY MX | <= 8.6 SU | all year |
| 001 | pH | MO MIN | report only | all year |
| 001 | pH | MO MAX | report only | all year |
| 001 | Solids, total suspended | MO AVG | report only | all year |
| 001 | Nitrogen, ammonia total [as N] | MO AVG | <= 2.1 mg/L | Jan, Feb, Mar, Apr, Dec |
| 001 | Nitrogen, ammonia total [as N] | MO AVG | <= 1.3 mg/L | May, Jun, Jul, Aug, Sep, Oct, Nov |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 6.1 mg/L | Jan, Feb, Mar, Apr, Dec |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 3.8 mg/L | May, Jun, Jul, Aug, Sep, Oct, Nov |
| 001 | Flow, in conduit or thru treatment plant | MO AVG | report only | all year |
| 001 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 001 | BOD, carbonaceous [5 day, 20 C] | MO AVG | report only | all year |
| 002 | pH | DAILY MN | >= 6.4 SU | all year |
| 002 | pH | DAILY MX | <= 8.6 SU | all year |
| 002 | Nitrogen, ammonia total [as N] | MO AVG | <= 1.3 mg/L | May, Jun, Jul, Aug, Sep, Oct, Nov |
| 002 | Nitrogen, ammonia total [as N] | MO AVG | <= 2.1 mg/L | Jan, Feb, Mar, Apr, Dec |
| 002 | Nitrogen, ammonia total [as N] | DAILY MX | <= 3.8 mg/L | May, Jun, Jul, Aug, Sep, Oct, Nov |
| 002 | Nitrogen, ammonia total [as N] | DAILY MX | <= 6.1 mg/L | Jan, Feb, Mar, Apr, Dec |
| 002 | Flow, in conduit or thru treatment plant | MO AVG | report only | all year |
| 002 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 004 | Temperature, water deg. centigrade | DAILY MX | report only | all year |
| 004 | Temperature, water deg. centigrade | MX 7D AV | report only | all year |
| 004 | Solids, total suspended | MO AVG | <= 10 mg/L | May, Jun, Jul, Aug, Sep, Oct, Nov |
| 004 | Solids, total suspended | MO AVG | <= 30 mg/L | Jan, Feb, Mar, Apr, Dec |
| 004 | Solids, total suspended | MO AVG | <= 96 lb/d | May, Jun, Jul, Aug, Sep, Oct, Nov |
| 004 | Solids, total suspended | MO AVG | <= 400 lb/d | Jan, Feb, Mar, Apr, Dec |
| 004 | Solids, total suspended | DAILY MX | <= 480 lb/d | May, Jun, Jul, Aug, Sep, Oct, Nov |
| 004 | Solids, total suspended | DAILY MX | <= 1500 lb/d | Jan, Feb, Mar, Apr, Dec |
| 004 | Solids, total suspended | MX WK AV | <= 45 mg/L | Jan, Feb, Mar, Apr, Dec |
| 004 | Solids, total suspended | MX WK AV | <= 15 mg/L | May, Jun, Jul, Aug, Sep, Oct, Nov |
| 004 | Solids, total suspended | MX WK AV | <= 920 lb/d | Jan, Feb, Mar, Apr, Dec |
| 004 | Solids, total suspended | MX WK AV | <= 180 lb/d | May, Jun, Jul, Aug, Sep, Oct, Nov |
| 004 | Nitrogen, ammonia total [as N] | MO AVG | <= 45 lb/d | May, Jun, Jul, Aug, Sep, Oct, Nov |
| 004 | Phosphorus, total [as P] | MO AVG | report only | May, Jun, Jul, Aug, Sep, Oct |
| 004 | Phosphorus, total [as P] | DAILY MX | report only | May, Jun, Jul, Aug, Sep, Oct |
| 004 | Phosphorus, total [as P] | MO AVG | <= 2 lb/d | May, Jun, Jul, Aug, Sep, Oct |
| 004 | Hardness, total [as CaCO3] | DAILY MX | report only | all year |
| 004 | Flow, in conduit or thru treatment plant | MO AVG | report only | all year |
| 004 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 004 | E. coli | MO GEO | <= 126 #/100mL | all year |
| 004 | E. coli | DAILY MX | <= 406 #/100mL | all year |
| 004 | E. coli | MO GEO | <= 126 #/100mL | all year |
| 004 | E. coli | DAILY MX | report only | all year |
| 004 | Excess thermal load | MX 7D AV | <= 5.1 mkcal/day | Jan |
| 004 | Excess thermal load | MX 7D AV | <= 5.4 mkcal/day | Feb |
| 004 | Excess thermal load | MX 7D AV | <= 5.6 mkcal/day | Mar |
| 004 | Excess thermal load | MX 7D AV | <= 5 mkcal/day | Apr |
| 004 | Excess thermal load | MX 7D AV | <= 6.4 mkcal/day | May |
| 004 | Excess thermal load | MX 7D AV | <= 6.3 mkcal/day | Jun |
| 004 | Excess thermal load | MX 7D AV | <= 7 mkcal/day | Jul |
| 004 | Excess thermal load | MX 7D AV | <= 7.7 mkcal/day | Aug |
| 004 | Excess thermal load | MX 7D AV | <= 2.8 mkcal/day | Sep |
| 004 | Excess thermal load | MX 7D AV | <= 2 mkcal/day | Oct |
| 004 | Excess thermal load | MX 7D AV | <= 3.1 mkcal/day | Nov |
| 004 | Excess thermal load | MX 7D AV | <= 4.4 mkcal/day | Dec |
| 004 | BOD, carbonaceous [5 day, 20 C] | MO AVG | <= 25 mg/L | Jan, Feb, Mar, Apr, Dec |
| 004 | BOD, carbonaceous [5 day, 20 C] | MO AVG | <= 10 mg/L | May, Jun, Jul |
| 004 | BOD, carbonaceous [5 day, 20 C] | MO AVG | <= 10 mg/L | Aug, Sep, Oct, Nov |
| 004 | BOD, carbonaceous [5 day, 20 C] | MO AVG | <= 400 lb/d | Jan, Feb, Mar, Apr, Dec |
| 004 | BOD, carbonaceous [5 day, 20 C] | MO AVG | <= 113 lb/d | May, Jun, Jul |
| 004 | BOD, carbonaceous [5 day, 20 C] | MO AVG | <= 59 lb/d | Aug, Sep, Oct, Nov |
| 004 | BOD, carbonaceous [5 day, 20 C] | DAILY MX | <= 1500 lb/d | Jan, Feb, Mar, Apr, Dec |
| 004 | BOD, carbonaceous [5 day, 20 C] | DAILY MX | <= 630 lb/d | May, Jun, Jul |
| 004 | BOD, carbonaceous [5 day, 20 C] | DAILY MX | <= 630 lb/d | Aug, Sep, Oct, Nov |
| 004 | BOD, carbonaceous [5 day, 20 C] | MX WK AV | <= 40 mg/L | Jan, Feb, Mar, Apr, Dec |
| 004 | BOD, carbonaceous [5 day, 20 C] | MX WK AV | <= 15 mg/L | May, Jun, Jul |
| 004 | BOD, carbonaceous [5 day, 20 C] | MX WK AV | <= 15 mg/L | Aug, Sep, Oct, Nov |
| 004 | BOD, carbonaceous [5 day, 20 C] | MX WK AV | <= 920 lb/d | Jan, Feb, Mar, Apr, Dec |
| 004 | BOD, carbonaceous [5 day, 20 C] | MX WK AV | <= 350 lb/d | May, Jun, Jul |
| 004 | BOD, carbonaceous [5 day, 20 C] | MX WK AV | <= 350 lb/d | Aug, Sep, Oct, Nov |
| 004 | Solids, suspended percent removal | MO AV MN | >= 85 % | all year |
| 004 | Carbonaceous oxygen demand, % removal | MO AV MN | >= 85 % | all year |
Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states