EPA · Indiana · discharge permits by parameter
Hardness, total [as CaCO3] in Indiana
- 33Permits carrying a limit
- 0With a recorded exceedance
- 2,593Nationwide
Permits
Other parameters in Indiana
- pH2,239
- Flow, in conduit or thru treatment plant1,898
- Solids, total suspended1,894
- Flow, total1,567
- BOD, carbonaceous [5 day, 20 C]1,351
- Nitrogen, ammonia total [as N]1,008
- E. coli, colony forming units [CFU]880
- Phosphorus, total [as P]793
- Oil and grease, hexane extr method769
- Number of Events697
- Chlorine, total residual656
- Oxygen, dissolved [DO]655
- Chemical Oxygen Demand [COD]473
- Nitrite + Nitrate total [as N]417
- Nitrogen, Kjeldahl, total [as N]413
- Zinc, total recoverable352
- Copper, total recoverable336
- Lead, total recoverable321
- Chromium, total recoverable267
- Nickel, total recoverable265
- Cadmium, total recoverable231
- Iron, total recoverable196
- Toxicity [acute], Ceriodaphnia dubia195
- Toxicity [acute], Pimephales promelas [Fathead Minnow]189
- BOD, carb-5 day, 20 deg C, percent removal181
- Solids, suspended percent removal179
- Toxicity [chronic], Ceriodaphnia dubia177
- Silver total recoverable175
- Toxicity [chronic], Pimephales promelas [Fathead Minnow]172
- Cyanide, total [as CN]172
- Temperature, water deg. fahrenheit168
- Benzene155
- Duration146
- Duration of discharge124
- Chloride [as Cl]117
- Mercury, total recoverable116
- Cadmium, dry weight108
- Nickel, sludge, total, dry weight [as Ni]108
- Lead, sludge, total, dry weight [as Pb]108
- Molybdenum, sludge, total, dry weight [as Mo]108
- Copper, dry weight108
- Mercury, sludge, total, dry weight [as Hg]108
- Zinc, sludge, total, dry weight [as Zn]108
- Storm water flow95
- Total toxic organics [TTO] [40 CFR433]92
- Nitrogen, total [as N]89
- Cyanide, free [amenable to chlorination]89
- Overflow volume [SS0 volume, CSO volume]87
- Discharge event observation [Visual Monitoring]86
- Precipitation, monthly accumulation86
- Sulfate, total [as SO4]82
- BOD, 5-day, 20 deg. C81
- Streamflow79
- Dilution factor77
- Phosphorus, total percent removal74
- Solids, settleable72
- Precipitation volume67
- Cyanide, free [as free]66
- Iron, total [as Fe]60
- Organics, total toxic [TTO]45