EPA · Rhode Island · discharge permits by parameter

Total production - mass in Rhode Island

• 3Permits carrying a limit
• 1With a recorded exceedance
• 180Nationwide

Permits

Other parameters in Rhode Island

• Solids, total suspended236
• Oil & Grease202
• Lead, total [as Pb]134
• Iron, total [as Fe]125
• Aluminum, total [as Al]114
• Zinc, total [as Zn]111
• Coliform, fecal general90
• Flow, in conduit or thru treatment plant87
• pH68
• Enterococci67
• Nitrogen, total [as N]55
• Phosphorus, total [as P]52
• Copper, total [as Cu]51
• Hardness, total [as CaCO3]40
• Cadmium, total [as Cd]35
• Chlorine, total residual31
• BOD, 5-day, 20 deg. C31
• Nitrogen, ammonia total [as N]26
• Nitrogen, nitrate total [as N]24
• Nitrogen, nitrite total [as N]24
• Nitrogen, Kjeldahl, total [as N]24
• Solids, settleable23
• Chemical Oxygen Demand [COD]23
• Solids, suspended percent removal21
• BOD, 5-day, percent removal18
• Cyanide, total [as CN]17
• Nitrite + Nitrate total [as N]17
• Temperature, water deg. fahrenheit17
• Nickel, total [as Ni]16
• Phenanthrene14
• Fluorene13
• Naphthalene13
• Fluoranthene12
• Pyrene12
• Acenaphthene12
• Iron, total recoverable11
• pH change [range]11
• Anthracene11
• Indeno[1,2,3-cd]pyrene11
• Benzo[a]anthracene11
• Benzo[b]fluoranthene11
• Benzo[a]pyrene10
• Acenaphthylene10
• Chrysene10
• Benzo[ghi]perylene10
• Turbidity10
• Chromium, total [as Cr]10
• Benzo[k]fluoranthene10
• Dibenz[a,h]anthracene9
• Cyanide, free available9
• LC50 Static Renewal 48Hr Acute Ceriodaphnia dubia8
• Zinc, total recoverable8
• PCB-10167
• LC50 Static Renewal 48Hr Acute Americamysis bahia (formerly Mysidopsis bahia)7
• Benzene7
• PCB-12217
• Nickel, total recoverable7
• NOEL Static Renewal 7Day Chronic Ceriodaphnia dubia7
• Ethylbenzene7
• Toluene7

Total production - mass nationwide