EPA · Illinois · discharge permits by parameter

Iron, total [as Fe] in Illinois

• 550Permits carrying a limit
• 174With a recorded exceedance
• 6,273Nationwide

Permits

Other parameters in Illinois

• Flow, in conduit or thru treatment plant2,319
• pH2,255
• Solids, total suspended2,146
• Chlorine, total residual1,760
• BOD, 5-day, 20 deg. C1,566
• Coliform, fecal general1,439
• Nitrogen, ammonia total [as N]1,320
• BOD, carbonaceous [5 day, 20 C]1,240
• Oxygen, dissolved [DO]1,233
• Phosphorus, total [as P]378
• Oil & Grease361
• Temperature, water deg. fahrenheit351
• Zinc, total [as Zn]349
• Copper, total [as Cu]341
• Manganese, total [as Mn]328
• Lead, total [as Pb]316
• Mercury, total [as Hg]316
• Nickel, total [as Ni]313
• Cadmium, total [as Cd]294
• Arsenic, total [as As]273
• Chromium, hexavalent [as Cr]272
• Fluoride, total [as F]270
• Chromium, total [as Cr]265
• Barium, total [as Ba]263
• Iron, dissolved [as Fe]258
• Phenolics, total recoverable250
• Nitrogen, total [as N]248
• Chloride [as Cl]245
• Silver, total [as Ag]243
• Cyanide, total [as CN]237
• Flow, total220
• Selenium, total [as Se]215
• Sulfate, total [as SO4]150
• Offensive Conditions141
• Alkalinity, total [as CaCO3]115
• Cyanide, weak acid, dissociable110
• Flow110
• Hardness, total [as CaCO3]102
• Oil and grease101
• Cyanide, free [amenable to chlorination]100
• Boron, total [as B]84
• Benzene73
• Toluene71
• Solids, total dissolved68
• Ethylbenzene64
• Acidity, total [as CaCO3]62
• Solids, settleable62
• Nitrite + Nitrate total [as N]59
• Carbon, tot organic [TOC]55
• Xylene [mix of m+o+p]54
• Overflows54
• Coliform, fecal - % samples exceeding limit53
• Phosphorus, dissolved53
• Antimony, total [as Sb]50
• Benzene, ethylbenzene, toluene, xylene combination47
• Chromium, trivalent [as Cr]46
• Thallium, total [as Tl]46
• Beryllium, total [as Be]44
• Naphthalene42
• Nitrogen, Kjeldahl, total [as N]41

Iron, total [as Fe] nationwide