EPA · North Dakota · discharge permits by parameter
Hardness, total [as CaCO3] in North Dakota
- 42Permits carrying a limit
- 0With a recorded exceedance
- 2,593Nationwide
Permits
Other parameters in North Dakota
- Solids, total suspended759
- pH756
- BOD, 5-day, 20 deg. C426
- Flow, total346
- Oil and grease visual333
- Flow, in conduit or thru treatment plant329
- Flow, total259
- Oil & Grease225
- E. coli163
- Nitrogen, ammonia total [as N]158
- Hydrocarbons, total petroleum156
- Iron, total [as Fe]137
- Chlorine, total residual122
- Temperature, water deg. centigrade111
- Chloride [as Cl]105
- Nitrite + Nitrate total [as N]94
- Stream flow, instantaneous92
- Lead, total [as Pb]79
- Zinc, total [as Zn]76
- Copper, total [as Cu]70
- Chromium, total [as Cr]66
- Phosphorus, total [as P]64
- Nickel, total [as Ni]59
- Cadmium, total [as Cd]55
- Duration of discharge52
- Arsenic, total [as As]51
- Cyanide, total [as CN]51
- Silver, total [as Ag]50
- Nitrogen, total [as N]38
- Selenium, total [as Se]38
- Sulfate, total [as SO4]37
- Mercury, total [as Hg]34
- Chemical Oxygen Demand [COD]34
- Benzene [volatile analysis]31
- Thallium, total [as Tl]30
- Antimony, total [as Sb]30
- Manganese, total [as Mn]29
- Benzene, ethylbenzene, toluene, xylene combination29
- Beryllium, total [as Be]28
- Conductivity27
- Total phenols26
- Toxic Units Static Renewal 48Hr Acute Ceriodaphnia dubia25
- TU Static Renewal 96Hr Acute Pimphales promelas25
- Total toxic organics [TTO] [40 CFR433]23
- Oxygen, dissolved [DO]23
- Aluminum, total [as Al]23
- Bromide [as Br]22
- Flow, process wastewater19
- Rainfall duration18
- Rainfall18
- Dry days preceding precipitation event18
- Magnesium, total [as Mg]18
- Date of Storm Event17
- Aluminum, dissolved [as Al]16
- Sodium, total [as Na]15
- TU Static Renewal 7-Day Chronic Ceriodaphnia dubia14
- Nitrogen, Kjeldahl, total [as N]14
- Solids, total dissolved [TDS]14
- Nitrogen, nitrate total [as N]13
- Flow rate13