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Puyallup STP

Sewage treatment plant, major discharger, Puyallup, Washington. NPDES permit WA0037168 expired Nov 30, 2019; its limits still apply. Last 12 months: no values over a limit, 2 of 36 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 001 form A monthly (37 values), outfall 001 form Q quarterly (7 values), outfall REC form A monthly (2 values), outfall REC form Q quarterly (3 values), outfall 001 form T yearly, outfall 001 form U yearly, and 2 more forms
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 3 of 36 reports late

Limits in force (72)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. centigrademaximum 7-day averagereport only (deg C)all year001
Temperature, water deg. centigradedaily maximumreport only (deg C)all year001
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year001
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year001
BOD, 5-day, 20 deg. Cmonthly average≤ 2179 lb/dall year001
BOD, 5-day, 20 deg. Cweekly average≤ 3268 lb/dall year001
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year001
pHmonthly minimum≥ 6.1 SUall year001
pHmonthly maximum≤ 9 SUall year001
pHinstantaneous minimumreport only (SU)all year001
pHinstantaneous maximumreport only (SU)all year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspendedweekly average≤ 45 mg/Lall year001
Solids, total suspendedmonthly average≤ 2333 lb/dall year001
Solids, total suspendedweekly average≤ 3499 lb/dall year001
Solids, total suspendedmonthly averagereport only (mg/L)all year001
Nitrogen, ammonia total [as N]monthly average≤ 5.4 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 4.2 mg/LMay–Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 16.1 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 12 mg/LMay–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 793 lb/dJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 490 lb/dMay–Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 2622 lb/dJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 792 lb/dMay–Oct001
Nitrogen, ammonia total [as N]annual maximumreport only (mg/L)all year001
Nitrogen, Kjeldahl, total [as N]monthly maximumreport only (mg/L)all year001
Nitrite + Nitrate total [as N]monthly maximumreport only (mg/L)all year001
Phosphorus, total [as P]monthly maximumreport only (mg/L)all year001
Hardness, total [as CaCO3]monthly minimumreport only (mg/L)all year001
Hardness, total [as CaCO3]annual maximumreport only (mg/L)all year001
Arsenic, total recoverablequarterly maximumreport only (ug/L)all year001
Arsenic, total recoverablequarterly maximumreport only (ug/L)all year001
Arsenic, Inorganicquarterly maximumreport only (ug/L)all year001
Arsenic, Inorganicquarterly maximumreport only (ug/L)all year001
Copper, dissolved [as Cu]annual maximumreport only (ug/L)all year001
Zinc, total recoverableannual maximumreport only (ug/L)all year001
Lead, total recoverableannual maximumreport only (ug/L)all year001
Copper, total recoverablemonthly average≤ 8.5 ug/Lall year001
Copper, total recoverabledaily maximum≤ 13.7 ug/Lall year001
Copper, total recoverablemonthly average≤ .99 lb/dall year001
Copper, total recoverabledaily maximum≤ 1.6 lb/dall year001
Coliform, fecal - % samples exceeding limitmonthly maximum≤ 10 %all year001
Fecal coliform, MPN, EC med, 44.5 Cmonthly geometric mean≤ 100 #/100mLall year001
Endosulfan sulfatequarterly maximumreport only (ug/L)all year001
.beta.-Endosulfanquarterly maximumreport only (ug/L)all year001
.alpha.-Endosulfanquarterly maximumreport only (ug/L)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD)all year001
Mercury, total recoverableannual maximumreport only (ug/L)all year001
Length of longest pH excursioncumulative total≤ 7.43 hrall year001
Length of longest pH excursionsingle reading≤ 1 hrall year001
Solids, floating - visual determinationmonthly maximum≤ 0 d/moall year001
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year001
Solids, suspended percent removalmonthly average minimum≥ 85 %all year001
Oil and grease visualmonthly maximum≤ 0 N=0;Y=1all year001
Toxicity, Chronicannual maximumreport only (tox chronic)all year001
Toxicity, Chronicannual maximumreport only (toxic)all year001
Temperature, water deg. centigrademaximum 7-day averagereport only (deg C)all yearREC
Temperature, water deg. centigradedaily maximumreport only (deg C)all yearREC
Temperature, water deg. centigrademaximum 7-day averagereport only (deg C)all yearREC
Temperature, water deg. centigradedaily maximumreport only (deg C)all yearREC
pHinstantaneous minimumreport only (SU)all yearREC
pHinstantaneous maximumreport only (SU)all yearREC
Nitrogen, ammonia total [as N]annual maximumreport only (mg/L)all yearREC
Hardness, total [as CaCO3]annual maximumreport only (mg/L)all yearREC
Arsenic, total recoverablequarterly maximumreport only (ug/L)all yearREC
Arsenic, Inorganicquarterly maximumreport only (ug/L)all yearREC
Arsenic, dissolved [as As]quarterly maximumreport only (ug/L)all yearREC
Copper, dissolved [as Cu]annual maximumreport only (ug/L)all yearREC
Zinc, total recoverableannual maximumreport only (ug/L)all yearREC
Lead, total recoverableannual maximumreport only (ug/L)all yearREC
Mercury, total recoverableannual maximumreport only (ug/L)all yearREC

How strict are these limits?

Cited limits by parameter: Washington's rules and the federal ones.

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/WA0037168 · MCP: https://passage-data.com/mcp