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Farm Machinery And Equipment, major discharger, Dubuque, Iowa. NPDES permit IA0000051, in force until Feb 28, 2029. Last 12 months: over a limit 5 times (last July 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit |
|---|---|---|---|
| March 2026 | pH, daily minimum | 6.28 | ≥ 6.4 SU |
| April 2026 | pH, daily minimum | 6.23 | ≥ 6.4 SU |
| May 2026 | pH, daily minimum | 6.23 | ≥ 6.4 SU |
| June 2026 | pH, daily minimum | 6.38 | ≥ 6.4 SU |
| July 2026 | pH, daily minimum | 6.35 | ≥ 6.4 SU |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | daily minimum | ≥ 6.4 SU | all year | 002 |
| pH | daily maximum | ≤ 9 SU | all year | 002 |
| Oil & Grease | 30-day average | ≤ 10 mg/L | all year | 002 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 002 |
| Chlorine, total residual | 30-day average | ≤ .05 mg/L | all year | 002 |
| Chlorine, total residual | daily maximum | ≤ .076 mg/L | all year | 002 |
| Chlorine, total residual | 30-day average | ≤ 1.5 lb/d | all year | 002 |
| Chlorine, total residual | daily maximum | ≤ 2.2 lb/d | all year | 002 |
| BOD, 5-day, 20 deg. C | 30-day average | report only (mg/L) | all year | 003 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 003 |
| BOD, 5-day, 20 deg. C | 30-day average | report only (lb/d) | all year | 003 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (lb/d) | all year | 003 |
| pH | daily minimum | ≥ 6.4 SU | all year | 003 |
| pH | daily maximum | ≤ 9 SU | all year | 003 |
| pH | 30-day average | report only (SU) | all year | 003 |
| pH | daily maximum | report only (SU) | all year | 003 |
| Solids, total suspended | 30-day average | ≤ 30 mg/L | all year | 003 |
| Solids, total suspended | 7-day average | ≤ 45 mg/L | all year | 003 |
| Solids, total suspended | 30-day average | ≤ 18 lb/d | all year | 003 |
| Solids, total suspended | 7-day average | ≤ 26 lb/d | all year | 003 |
| Solids, total suspended | 30-day average | report only (mg/L) | all year | 003 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 003 |
| Solids, total suspended | 30-day average | report only (lb/d) | all year | 003 |
| Solids, total suspended | daily maximum | report only (lb/d) | all year | 003 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 31.7 mg/L | Jun | 003 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 30.8 mg/L | Oct | 003 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 35.9 mg/L | Jul | 003 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 34.8 mg/L | Mar | 003 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 38.1 mg/L | Feb | 003 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 30.8 mg/L | Apr | 003 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 31.9 mg/L | Sep | 003 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 35.7 mg/L | Jan | 003 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 32.6 mg/L | May | 003 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 29.4 mg/L | Nov | 003 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 34 mg/L | Aug | 003 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 31.2 mg/L | Dec | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 31.7 mg/L | Jun | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 30.8 mg/L | Oct | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 35.9 mg/L | Jul | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 34.8 mg/L | Mar | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 38.1 mg/L | Feb | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 30.8 mg/L | Apr | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 31.9 mg/L | Sep | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 35.7 mg/L | Jan | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 32.6 mg/L | May | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 29.4 mg/L | Nov | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 34 mg/L | Aug | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 31.2 mg/L | Dec | 003 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 18.3 lb/d | Jun | 003 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 18.4 lb/d | Oct | 003 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 17.5 lb/d | Jul | 003 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 19.6 lb/d | Mar | 003 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 20.8 lb/d | Feb | 003 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 18.4 lb/d | Apr | 003 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 18.4 lb/d | Sep | 003 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 20.2 lb/d | Jan | 003 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 18.9 lb/d | May | 003 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 17.5 lb/d | Nov | 003 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 16.6 lb/d | Aug | 003 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 18.7 lb/d | Dec | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 18.3 lb/d | Jun | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 18.4 lb/d | Oct | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 21.3 lb/d | Jul | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 19.6 lb/d | Mar | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 20.8 lb/d | Feb | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 18.4 lb/d | Apr | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 19.2 lb/d | Sep | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 20.2 lb/d | Jan | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 18.9 lb/d | May | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 17.5 lb/d | Nov | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 19.9 lb/d | Aug | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 18.7 lb/d | Dec | 003 |
| Chlorine, total residual | 30-day average | ≤ .32 mg/L | all year | 003 |
| Chlorine, total residual | daily maximum | ≤ .32 mg/L | all year | 003 |
| Chlorine, total residual | 30-day average | ≤ .341 lb/d | all year | 003 |
| Chlorine, total residual | daily maximum | ≤ .346 lb/d | all year | 003 |
| E. coli | geometric mean | ≤ 126 #/100mL | Mar–Nov | 003 |
| BOD, carbonaceous [5 day, 20 C] | 30-day average | ≤ 25 mg/L | all year | 003 |
| BOD, carbonaceous [5 day, 20 C] | 7-day average | ≤ 40 mg/L | all year | 003 |
| BOD, carbonaceous [5 day, 20 C] | 30-day average | ≤ 15 lb/d | all year | 003 |
| BOD, carbonaceous [5 day, 20 C] | 7-day average | ≤ 23 lb/d | all year | 003 |
| pH | daily minimum | ≥ 6 SU | all year | 005 |
| pH | daily maximum | ≤ 9 SU | all year | 005 |
| Oil & Grease | 30-day average | ≤ 10 mg/L | all year | 005 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 005 |
| pH | daily minimum | ≥ 6 SU | all year | 006 |
| pH | daily maximum | ≤ 9 SU | all year | 006 |
| Oil & Grease | 30-day average | ≤ 10 mg/L | all year | 006 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 006 |
| Toxicity [acute], Ceriodaphnia dubia | daily maximum | ≤ 1 N=0;Y=1 | all year | 006 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | daily maximum | ≤ 1 N=0;Y=1 | all year | 006 |
| pH | daily minimum | ≥ 6 SU | all year | 008 |
| pH | daily maximum | ≤ 9 SU | all year | 008 |
| Oil & Grease | 30-day average | ≤ 10 mg/L | all year | 008 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 008 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 14.8 mg/L | Jun | 008 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 11 mg/L | Mar | 008 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 11 mg/L | May | 008 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 11 mg/L | Nov | 008 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 11 mg/L | Apr | 008 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 11 mg/L | Dec | 008 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 11 mg/L | Sep | 008 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 26.3 mg/L | Jan | 008 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 10 mg/L | Aug | 008 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 11 mg/L | Oct | 008 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 10 mg/L | Jul | 008 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 18 mg/L | Feb | 008 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 14.8 mg/L | Jun | 008 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 16 mg/L | Mar | 008 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 12.2 mg/L | May | 008 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 14.8 mg/L | Nov | 008 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 14.8 mg/L | Apr | 008 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 16 mg/L | Dec | 008 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 12.2 mg/L | Sep | 008 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 26.3 mg/L | Jan | 008 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 14.8 mg/L | Aug | 008 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 14.8 mg/L | Oct | 008 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 14.8 mg/L | Jul | 008 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 18 mg/L | Feb | 008 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 5.1 lb/d | Jun | 008 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 8.9 lb/d | Mar | 008 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 5 lb/d | May | 008 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 6.1 lb/d | Nov | 008 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 6.1 lb/d | Apr | 008 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 7.4 lb/d | Dec | 008 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 5 lb/d | Sep | 008 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 10.7 lb/d | Jan | 008 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 6.1 lb/d | Aug | 008 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 6.1 lb/d | Oct | 008 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 6.1 lb/d | Jul | 008 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 7.4 lb/d | Feb | 008 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.1 lb/d | Jun | 008 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 8.9 lb/d | Mar | 008 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 5 lb/d | May | 008 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.1 lb/d | Nov | 008 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.1 lb/d | Apr | 008 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 7.4 lb/d | Dec | 008 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 5 lb/d | Sep | 008 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 10.7 lb/d | Jan | 008 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.1 lb/d | Aug | 008 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.1 lb/d | Oct | 008 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.1 lb/d | Jul | 008 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 7.4 lb/d | Feb | 008 |
| Iron, total [as Fe] | 30-day average | ≤ 11 mg/L | all year | 008 |
| Iron, total [as Fe] | daily maximum | ≤ 11 mg/L | all year | 008 |
| Iron, total [as Fe] | 30-day average | ≤ 4.5 lb/d | all year | 008 |
| Iron, total [as Fe] | daily maximum | ≤ 4.5 lb/d | all year | 008 |
| pH | daily minimum | ≥ 6 SU | all year | 011 |
| pH | daily maximum | ≤ 9 SU | all year | 011 |
| Solids, total suspended | 30-day average | ≤ 31 mg/L | all year | 011 |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 011 |
| Solids, total suspended | 30-day average | ≤ 18 lb/d | all year | 011 |
| Solids, total suspended | daily maximum | ≤ 35.03 lb/d | all year | 011 |
| Oil & Grease | 30-day average | ≤ 26 mg/L | all year | 011 |
| Oil & Grease | daily maximum | ≤ 52 mg/L | all year | 011 |
| Oil & Grease | 30-day average | ≤ 15.18 lb/d | all year | 011 |
| Oil & Grease | daily maximum | ≤ 30.36 lb/d | all year | 011 |
| Nitrogen, total [as N] | 30-day average | report only (mg/L) | all year | 011 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 011 |
| Nitrogen, total [as N] | 30-day average | report only (lb/d) | all year | 011 |
| Nitrogen, total [as N] | daily maximum | report only (lb/d) | all year | 011 |
| Phosphorus, total [as P] | 30-day average | report only (mg/L) | all year | 011 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 011 |
| Phosphorus, total [as P] | 30-day average | report only (lb/d) | all year | 011 |
| Phosphorus, total [as P] | daily maximum | report only (lb/d) | all year | 011 |
| Cyanide, total [as CN] | 30-day average | ≤ .46 mg/L | all year | 011 |
| Cyanide, total [as CN] | daily maximum | ≤ .7 mg/L | all year | 011 |
| Cyanide, total [as CN] | 30-day average | ≤ .38 lb/d | all year | 011 |
| Cyanide, total [as CN] | daily maximum | ≤ .7 lb/d | all year | 011 |
| Cadmium, total [as Cd] | 30-day average | ≤ .26 mg/L | all year | 011 |
| Cadmium, total [as Cd] | daily maximum | ≤ .69 mg/L | all year | 011 |
| Cadmium, total [as Cd] | 30-day average | ≤ .15 lb/d | all year | 011 |
| Cadmium, total [as Cd] | daily maximum | ≤ .4 lb/d | all year | 011 |
| Chromium, total [as Cr] | 30-day average | ≤ 1.71 mg/L | all year | 011 |
| Chromium, total [as Cr] | daily maximum | ≤ 2.77 mg/L | all year | 011 |
| Chromium, total [as Cr] | 30-day average | ≤ 1 lb/d | all year | 011 |
| Chromium, total [as Cr] | daily maximum | ≤ 1.62 lb/d | all year | 011 |
| Copper, total [as Cu] | 30-day average | ≤ .54 mg/L | all year | 011 |
| Copper, total [as Cu] | daily maximum | ≤ .81 mg/L | all year | 011 |
| Copper, total [as Cu] | 30-day average | ≤ 1.21 lb/d | all year | 011 |
| Copper, total [as Cu] | daily maximum | ≤ 1.97 lb/d | all year | 011 |
| Lead, total [as Pb] | 30-day average | ≤ .43 mg/L | all year | 011 |
| Lead, total [as Pb] | daily maximum | ≤ .69 mg/L | all year | 011 |
| Lead, total [as Pb] | 30-day average | ≤ .25 lb/d | all year | 011 |
| Lead, total [as Pb] | daily maximum | ≤ .4 lb/d | all year | 011 |
| Nickel, total [as Ni] | 30-day average | ≤ 2.38 mg/L | all year | 011 |
| Nickel, total [as Ni] | daily maximum | ≤ 3.98 mg/L | all year | 011 |
| Nickel, total [as Ni] | 30-day average | ≤ 1.39 lb/d | all year | 011 |
| Nickel, total [as Ni] | daily maximum | ≤ 2.32 lb/d | all year | 011 |
| Silver, total [as Ag] | 30-day average | ≤ .24 mg/L | all year | 011 |
| Silver, total [as Ag] | daily maximum | ≤ .43 mg/L | all year | 011 |
| Silver, total [as Ag] | 30-day average | ≤ .14 lb/d | all year | 011 |
| Silver, total [as Ag] | daily maximum | ≤ .25 lb/d | all year | 011 |
| Zinc, total [as Zn] | 30-day average | ≤ 1.48 mg/L | all year | 011 |
| Zinc, total [as Zn] | daily maximum | ≤ 2.61 mg/L | all year | 011 |
| Zinc, total [as Zn] | 30-day average | ≤ .86 lb/d | all year | 011 |
| Zinc, total [as Zn] | daily maximum | ≤ 1.52 lb/d | all year | 011 |
| Organics, total toxic [TTO] | daily maximum | ≤ 2.13 mg/L | all year | 011 |
| Organics, total toxic [TTO] | daily maximum | ≤ 1.24 lb/d | all year | 011 |
| Parameter | New limit | New or tighter | Median, last 12 months | × new limit |
|---|---|---|---|---|
| Chlorine, total residual, daily maximum outfall 002 | 0.024 mg/L | tighter | 0.04 mg/L (11 values) | 1.67× |
| Chlorine, total residual, 30-day average outfall 003 | 0.024 mg/L | tighter | 0.0275 mg/L (11 values) | 1.15× |
| Chlorine, total residual, daily maximum outfall 003 | 0.024 mg/L | tighter | 0.05 mg/L (11 values) | 2.08× |
| Chlorine, total residual, daily maximum outfall 003 | 0.015 lb/d | tighter | 0.01534 lb/d (11 values) | 1.02× |
| Chlorine, total residual, 30-day average outfall 002 | 0.405 lb/d | tighter | 0.0341 lb/d (11 values) | 0.0842× |
| Chlorine, total residual, 30-day average outfall 002 | 0.024 mg/L | tighter | 0.02286 mg/L (11 values) | 0.952× |
| Chlorine, total residual, daily maximum outfall 002 | 0.468 lb/d | tighter | 0.06509 lb/d (11 values) | 0.139× |
| Chlorine, total residual, 30-day average outfall 003 | 0.011 lb/d | tighter | 0.006296 lb/d (11 values) | 0.572× |
| Copper, total [as Cu], 30-day average outfall 003 | 0.62 lb/d | new | — | — |
| Copper, total [as Cu], 30-day average outfall 003 | 0.034 mg/L | new | — | — |
| Copper, total [as Cu], daily maximum outfall 003 | 0.62 lb/d | new | — | — |
| Copper, total [as Cu], daily maximum outfall 003 | 0.034 mg/L | new | — | — |
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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