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HWH Corporation

Fluid Power Cylinders & Actuators, Moscow, Iowa. NPDES permit IA0071056, in force until Mar 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 (19 values), outfall 002 form A monthly (19 values)
Renewal application due
Oct 2, 2026 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 24 reports late

Limits in force (126)

ParameterStatisticLimitMonthsOutfall
pHdaily minimum≥ 6 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspended30-day average≤ 80 mg/Lall year001
Solids, total suspended7-day average≤ 120 mg/Lall year001
Solids, total suspended30-day average≤ 2.74 lb/dall year001
Solids, total suspended7-day average≤ 4.1 lb/dall year001
Oil & Grease30-day average≤ 10 mg/Lall year001
Oil & Greasedaily maximum≤ 15 mg/Lall year001
Oil & Grease30-day average≤ .34 lb/dall year001
Oil & Greasedaily maximum≤ .51 lb/dall year001
Nitrogen, ammonia total [as N]30-day average≤ 2.5 mg/LDec001
Nitrogen, ammonia total [as N]30-day average≤ 3.5 mg/LJan001
Nitrogen, ammonia total [as N]30-day average≤ 4 mg/LFeb001
Nitrogen, ammonia total [as N]30-day average≤ 1.8 mg/LMay001
Nitrogen, ammonia total [as N]30-day average≤ 1.1 mg/LSep001
Nitrogen, ammonia total [as N]30-day average≤ 1.6 mg/LApr001
Nitrogen, ammonia total [as N]30-day average≤ 2.4 mg/LNov001
Nitrogen, ammonia total [as N]30-day average≤ 1.4 mg/LJun001
Nitrogen, ammonia total [as N]30-day average≤ 1.1 mg/LJul001
Nitrogen, ammonia total [as N]30-day average≤ 1 mg/LAug001
Nitrogen, ammonia total [as N]30-day average≤ 1.6 mg/LOct001
Nitrogen, ammonia total [as N]30-day average≤ 3.5 mg/LMar001
Nitrogen, ammonia total [as N]daily maximum≤ 4 mg/LDec001
Nitrogen, ammonia total [as N]daily maximum≤ 20.2 mg/LJan001
Nitrogen, ammonia total [as N]daily maximum≤ 8.6 mg/LFeb001
Nitrogen, ammonia total [as N]daily maximum≤ 3.3 mg/LMay001
Nitrogen, ammonia total [as N]daily maximum≤ 2.8 mg/LSep001
Nitrogen, ammonia total [as N]daily maximum≤ 4.9 mg/LApr001
Nitrogen, ammonia total [as N]daily maximum≤ 2.7 mg/LNov001
Nitrogen, ammonia total [as N]daily maximum≤ 3.4 mg/LJun001
Nitrogen, ammonia total [as N]daily maximum≤ 3.4 mg/LJul001
Nitrogen, ammonia total [as N]daily maximum≤ 2.8 mg/LAug001
Nitrogen, ammonia total [as N]daily maximum≤ 2.7 mg/LOct001
Nitrogen, ammonia total [as N]daily maximum≤ 4 mg/LMar001
Nitrogen, ammonia total [as N]30-day average≤ .09 lb/dDec001
Nitrogen, ammonia total [as N]30-day average≤ .12 lb/dJan001
Nitrogen, ammonia total [as N]30-day average≤ .14 lb/dFeb001
Nitrogen, ammonia total [as N]30-day average≤ .06 lb/dMay001
Nitrogen, ammonia total [as N]30-day average≤ .04 lb/dSep001
Nitrogen, ammonia total [as N]30-day average≤ .05 lb/dApr001
Nitrogen, ammonia total [as N]30-day average≤ .08 lb/dNov001
Nitrogen, ammonia total [as N]30-day average≤ .05 lb/dJun001
Nitrogen, ammonia total [as N]30-day average≤ .04 lb/dJul001
Nitrogen, ammonia total [as N]30-day average≤ .04 lb/dAug001
Nitrogen, ammonia total [as N]30-day average≤ .06 lb/dOct001
Nitrogen, ammonia total [as N]30-day average≤ .12 lb/dMar001
Nitrogen, ammonia total [as N]daily maximum≤ .14 lb/dDec001
Nitrogen, ammonia total [as N]daily maximum≤ .69 lb/dJan001
Nitrogen, ammonia total [as N]daily maximum≤ .29 lb/dFeb001
Nitrogen, ammonia total [as N]daily maximum≤ .11 lb/dMay001
Nitrogen, ammonia total [as N]daily maximum≤ .1 lb/dSep001
Nitrogen, ammonia total [as N]daily maximum≤ .17 lb/dApr001
Nitrogen, ammonia total [as N]daily maximum≤ .09 lb/dNov001
Nitrogen, ammonia total [as N]daily maximum≤ .12 lb/dJun001
Nitrogen, ammonia total [as N]daily maximum≤ .12 lb/dJul001
Nitrogen, ammonia total [as N]daily maximum≤ .1 lb/dAug001
Nitrogen, ammonia total [as N]daily maximum≤ .09 lb/dOct001
Nitrogen, ammonia total [as N]daily maximum≤ .14 lb/dMar001
E. coligeometric mean≤ 370 #/100mLMar–Nov001
BOD, carbonaceous [5 day, 20 C]30-day average≤ 25 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]7-day average≤ 40 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]30-day average≤ .85 lb/dall year001
BOD, carbonaceous [5 day, 20 C]7-day average≤ 1.37 lb/dall year001
pHdaily minimum≥ 6 SUall year002
pHdaily maximum≤ 9 SUall year002
Solids, total suspended30-day average≤ 80 mg/Lall year002
Solids, total suspended7-day average≤ 120 mg/Lall year002
Solids, total suspended30-day average≤ 5.34 lb/dall year002
Solids, total suspended7-day average≤ 8.01 lb/dall year002
Oil & Grease30-day average≤ 10 mg/Lall year002
Oil & Greasedaily maximum≤ 15 mg/Lall year002
Oil & Grease30-day average≤ .67 lb/dall year002
Oil & Greasedaily maximum≤ 1 lb/dall year002
Nitrogen, ammonia total [as N]30-day average≤ 2.5 mg/LDec002
Nitrogen, ammonia total [as N]30-day average≤ 4 mg/LFeb002
Nitrogen, ammonia total [as N]30-day average≤ 3.5 mg/LJan002
Nitrogen, ammonia total [as N]30-day average≤ 2.4 mg/LNov002
Nitrogen, ammonia total [as N]30-day average≤ 1.4 mg/LJun002
Nitrogen, ammonia total [as N]30-day average≤ 1.8 mg/LMay002
Nitrogen, ammonia total [as N]30-day average≤ 1.1 mg/LJul002
Nitrogen, ammonia total [as N]30-day average≤ 1.1 mg/LSep002
Nitrogen, ammonia total [as N]30-day average≤ 1 mg/LAug002
Nitrogen, ammonia total [as N]30-day average≤ 1.6 mg/LOct002
Nitrogen, ammonia total [as N]30-day average≤ 1.6 mg/LApr002
Nitrogen, ammonia total [as N]30-day average≤ 3.5 mg/LMar002
Nitrogen, ammonia total [as N]daily maximum≤ 4 mg/LDec002
Nitrogen, ammonia total [as N]daily maximum≤ 8.6 mg/LFeb002
Nitrogen, ammonia total [as N]daily maximum≤ 20.2 mg/LJan002
Nitrogen, ammonia total [as N]daily maximum≤ 2.7 mg/LNov002
Nitrogen, ammonia total [as N]daily maximum≤ 3.4 mg/LJun002
Nitrogen, ammonia total [as N]daily maximum≤ 3.4 mg/LMay002
Nitrogen, ammonia total [as N]daily maximum≤ 3.5 mg/LJul002
Nitrogen, ammonia total [as N]daily maximum≤ 2.8 mg/LSep002
Nitrogen, ammonia total [as N]daily maximum≤ 2.9 mg/LAug002
Nitrogen, ammonia total [as N]daily maximum≤ 2.8 mg/LOct002
Nitrogen, ammonia total [as N]daily maximum≤ 4.9 mg/LApr002
Nitrogen, ammonia total [as N]daily maximum≤ 4 mg/LMar002
Nitrogen, ammonia total [as N]30-day average≤ .09 lb/dDec002
Nitrogen, ammonia total [as N]30-day average≤ .27 lb/dFeb002
Nitrogen, ammonia total [as N]30-day average≤ .23 lb/dJan002
Nitrogen, ammonia total [as N]30-day average≤ .16 lb/dNov002
Nitrogen, ammonia total [as N]30-day average≤ .09 lb/dJun002
Nitrogen, ammonia total [as N]30-day average≤ .12 lb/dMay002
Nitrogen, ammonia total [as N]30-day average≤ .07 lb/dJul002
Nitrogen, ammonia total [as N]30-day average≤ .08 lb/dSep002
Nitrogen, ammonia total [as N]30-day average≤ .07 lb/dAug002
Nitrogen, ammonia total [as N]30-day average≤ .11 lb/dOct002
Nitrogen, ammonia total [as N]30-day average≤ .11 lb/dApr002
Nitrogen, ammonia total [as N]30-day average≤ .23 lb/dMar002
Nitrogen, ammonia total [as N]daily maximum≤ .14 lb/dDec002
Nitrogen, ammonia total [as N]daily maximum≤ .57 lb/dFeb002
Nitrogen, ammonia total [as N]daily maximum≤ 1.35 lb/dJan002
Nitrogen, ammonia total [as N]daily maximum≤ .18 lb/dNov002
Nitrogen, ammonia total [as N]daily maximum≤ .23 lb/dJun002
Nitrogen, ammonia total [as N]daily maximum≤ .23 lb/dMay002
Nitrogen, ammonia total [as N]daily maximum≤ .23 lb/dJul002
Nitrogen, ammonia total [as N]daily maximum≤ .19 lb/dSep002
Nitrogen, ammonia total [as N]daily maximum≤ .19 lb/dAug002
Nitrogen, ammonia total [as N]daily maximum≤ .19 lb/dOct002
Nitrogen, ammonia total [as N]daily maximum≤ .33 lb/dApr002
Nitrogen, ammonia total [as N]daily maximum≤ .27 lb/dMar002
E. coligeometric mean≤ 386 #/100mLMar–Nov002
BOD, carbonaceous [5 day, 20 C]30-day average≤ 25 mg/Lall year002
BOD, carbonaceous [5 day, 20 C]7-day average≤ 40 mg/Lall year002
BOD, carbonaceous [5 day, 20 C]30-day average≤ 1.67 lb/dall year002
BOD, carbonaceous [5 day, 20 C]7-day average≤ 2.67 lb/dall year002

How strict are these limits?

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

Same industry: the 10 Industrial and Commercial Machinery and Computer Equipment permits in Iowa.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/IA0071056 · MCP: https://passage-data.com/mcp