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Clean Water Services

Sewage treatment plant, major discharger, Hillsboro, Oregon. NPDES permit OR0029777, in force until Nov 30, 2027. Last 12 months: over a limit once (last September 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form A monthly (50 values), outfall 001 form G monthly (8 values), outfall 003 form A monthly (41 values)
Renewal application due
Jun 3, 2027 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
1 value over a limit, 5 required values missing, 1 of 51 reports late

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

Period endingParameterReportedLimitOver by
September 2026Phosphorus, total [as P], monthly median.11 mg/L≤ .1 mg/L10%

Limits in force (133)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. centigrademonthly averagereport only (deg C)May–Oct001
Temperature, water deg. centigradedaily maximum≤ 25 deg CMay–Oct001
Temperature, water deg. centigradehighest 7-day averagereport only (deg C)May–Oct001
Oxygen, dissolved [DO]daily average minimum≥ 3 mg/LMay–Oct001
Solids, total suspendedmonthly averagereport only (mg/L)all year001
Solids, total suspendedmonthly average≤ 20 mg/LJan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec001
Solids, total suspendedmonthly average≤ 17000 lb/dJan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec001
Solids, total suspendeddaily maximumreport only (lb/d)Jan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec001
Solids, total suspendedmaximum weekly average≤ 30 mg/LJan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec001
Solids, total suspendedmaximum weekly average≤ 26000 lb/dJan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec001
Solids, total suspendedmonthly average≤ 8 mg/LMay–Nov001
Solids, total suspendedmonthly average≤ 12000 lb/dMay–Nov001
Solids, total suspendeddaily maximumreport only (lb/d)May–Nov001
Solids, total suspendedmaximum weekly average≤ 11 mg/LMay–Nov001
Solids, total suspendedmaximum weekly average≤ 18000 lb/dMay–Nov001
Solids, total suspendedmaximum weekly average≤ 11 mg/LMay–Nov001
Solids, total suspendedmaximum weekly average≤ 20000 lb/dMay–Nov001
Solids, total suspendedmonthly average≤ 8 mg/LMay–Nov001
Solids, total suspendedmonthly average≤ 13000 lb/dMay–Nov001
Solids, total suspendeddaily maximumreport only (lb/d)May–Nov001
Nitrogen, ammonia total [as N]monthly average≤ 3.1 mg/LJun–Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 7.5 mg/LJun–Oct001
Nitrogen, ammonia total [as N]monthly maximumreport only (mg/L)all year001
Nitrogen, ammonia total [as N]monthly average≤ 12.1 mg/LMay001
Nitrogen, ammonia total [as N]daily maximum≤ 29.6 mg/LMay001
Nitrogen, ammonia total [as N]monthly average≤ 3.9 mg/LMay001
Nitrogen, ammonia total [as N]daily maximum≤ 10.6 mg/LMay001
Nitrogen, ammonia total [as N]monthly average≤ 16.2 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 35.2 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 11 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 23.2 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 4.4 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 11.5 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]7-day medianreport only (lb/d)all year001
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year001
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year001
Phosphorus, total [as P]monthly median≤ .1 mg/LMay–Sep001
Phosphorus, total [as P]monthly medianreport only (mg/L)Jan, Feb, Mar, Apr, Oct, Nov, Dec001
Phosphorus, total [as P]daily maximumreport only (mg/L)May–Sep001
Phosphorus, total [as P]daily maximumreport only (mg/L)Jan, Feb, Mar, Apr, Oct, Nov, Dec001
Phosphorus, total [as P]monthly medianreport only (lb/d)May–Sep001
Phosphorus, total [as P]monthly maximumreport only (mg/L)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantmaximum daily averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantmaximum daily averagereport only (MGD)all year001
Chlorine, total residualmonthly average≤ .05 mg/Lall year001
Chlorine, total residualdaily maximum≤ .05 mg/Lall year001
E. colimonthly geometric mean≤ 126 #/100mLall year001
E. colidaily maximum≤ 406 #/100mLall year001
E. colimonthly geometric mean≤ 126 #/100mLall year001
E. colidaily maximumreport only (#/100mL)all year001
Excess thermal loadhighest 7-day averagereport only (mkcal/day)May–Oct001
Excess thermal loaddaily maximum≤ 24 mkcal/dayMay–Oct001
Excess thermal loadhighest 7-day averagereport only (mkcal/day)May–Oct001
Excess thermal loaddaily maximum≤ 66 mkcal/dayMay–Oct001
pH, maximumdaily maximum≤ 9 SU (alert, not enforceable)all year001
pH, maximummonthly maximumreport only (SU)all year001
pH, minimumdaily minimum≥ 6.3 SU (alert, not enforceable)all year001
pH, minimummonthly minimumreport only (SU)all year001
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 15 mg/LJan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 8600 lb/dJan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 17000 lb/dJan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 25 mg/LJan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 13000 lb/dJan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 8 mg/LMay–Nov001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 1550 lb/dMay–Nov001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 3100 lb/dMay–Nov001
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 11 mg/LMay–Nov001
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 2300 lb/dMay–Nov001
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 11 mg/LMay–Nov001
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 2600 lb/dMay–Nov001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 8 mg/LMay–Nov001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 1750 lb/dMay–Nov001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 3500 lb/dMay–Nov001
BOD, carbonaceous, percent removalmonthly average minimum≥ 85 %all year001
Solids, suspended percent removalmonthly average minimum≥ 85 %all year001
pH range excursions, > 60 minutestotal≤ 0 occur/moall year001
pH range excursions, monthly total accumtotal≤ 446 minall year001
Temperature, water deg. centigrademonthly averagereport only (deg C)Mar, May, Jun, Jul, Aug, Sep, Oct003
Temperature, water deg. centigradedaily maximumreport only (deg C)Mar, May, Jun, Jul, Aug, Sep, Oct003
Temperature, water deg. centigradehighest 7-day averagereport only (deg C)May–Oct003
Flow ratemonthly averagereport only (cfs)all year003
Flow ratedaily maximumreport only (cfs)all year003
Oxygen, dissolved [DO]daily average minimumreport only (mg/L)May–Oct003
Solids, total suspendedmonthly average≤ 20 mg/LJan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec003
Solids, total suspendedmonthly average≤ 17000 lb/dJan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec003
Solids, total suspendeddaily maximumreport only (lb/d)Jan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec003
Solids, total suspendedmaximum weekly average≤ 30 mg/LJan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec003
Solids, total suspendedmaximum weekly average≤ 26000 lb/dJan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec003
Solids, total suspendedmonthly averagereport only (mg/L)May–Nov003
Solids, total suspendedmonthly averagereport only (lb/d)May–Nov003
Solids, total suspendeddaily maximumreport only (lb/d)May–Nov003
Solids, total suspendedmaximum weekly averagereport only (mg/L)May–Nov003
Solids, total suspendedmaximum weekly averagereport only (lb/d)May–Nov003
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year003
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year003
Nitrogen, ammonia total [as N]7-day medianreport only (lb/d)all year003
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year003
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year003
Phosphorus, total [as P]monthly medianreport only (mg/L)May–Sep003
Phosphorus, total [as P]monthly medianreport only (mg/L)Jan, Feb, Mar, Apr, Oct, Nov, Dec003
Phosphorus, total [as P]daily maximumreport only (mg/L)May–Sep003
Phosphorus, total [as P]daily maximumreport only (mg/L)Jan, Feb, Mar, Apr, Oct, Nov, Dec003
Phosphorus, total [as P]monthly medianreport only (lb/d)May–Sep003
Durationtotalreport only (hr)all year003
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year003
Flow, in conduit or thru treatment plantmaximum daily averagereport only (MGD)all year003
Chlorine, total residualmonthly average≤ .05 mg/Lall year003
Chlorine, total residualdaily maximum≤ .05 mg/Lall year003
E. colimonthly geometric mean≤ 126 #/100mLall year003
E. colidaily maximum≤ 406 #/100mLall year003
E. colimonthly geometric mean≤ 126 #/100mLall year003
E. colidaily maximumreport only (#/100mL)all year003
Excess thermal loadhighest 7-day averagereport only (mkcal/day)May–Oct003
Excess thermal loaddaily maximumreport only (mkcal/day)May–Oct003
pH, maximumdaily maximum≤ 9 SU (alert, not enforceable)all year003
pH, minimumdaily minimum≥ 6.3 SU (alert, not enforceable)all year003
BOD, carbonaceous [5 day, 20 C]monthly average≤ 15 mg/L (alert, not enforceable)Jan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec003
BOD, carbonaceous [5 day, 20 C]monthly average≤ 8600 lb/d (alert, not enforceable)Jan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec003
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 17000 lb/d (alert, not enforceable)Jan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec003
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 25 mg/L (alert, not enforceable)Jan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec003
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 13000 lb/d (alert, not enforceable)Jan, Feb, Mar, Apr, May, Jun, Oct, Nov, Dec003
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L) (alert, not enforceable)May–Nov003
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (lb/d) (alert, not enforceable)May–Nov003
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (lb/d) (alert, not enforceable)May–Nov003
BOD, carbonaceous [5 day, 20 C]maximum weekly averagereport only (mg/L) (alert, not enforceable)May–Nov003
BOD, carbonaceous [5 day, 20 C]maximum weekly averagereport only (lb/d) (alert, not enforceable)May–Nov003
BOD, carbonaceous, percent removalmonthly average minimum≥ 85 %all year003
Solids, suspended percent removalmonthly average minimum≥ 85 %all year003
pH range excursions, > 60 minutestotal≤ 0 occur/moall year003
pH range excursions, monthly total accumtotal≤ 446 minall year003

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/OR0029777 · MCP: https://passage-data.com/mcp