EPA · discharge permits by pollutant and parameter

Critical Dilution

• 116Permits carrying a limit
• 0With a recorded exceedance
• 2States

EPA identifies this parameter by code 51726. A permit listed here carries a numeric limit on critical dilution in its discharge; an exceedance is a monitoring result above that limit, as reported to EPA.

By state

• Texas60
• Louisiana33

By watershed

The subbasins of the national Watershed Boundary Dataset carrying the most permits with a limit on critical dilution.

• Subbasin 1204010440
• Subbasin 0808010310

Other pollutants

• Floating solids or visible foam-visual/days 11
• Oil based fluids, non-aqueous based drilling fluids and cuttings 15
• Whole Effluent Toxicity [WET] - C. dubia 119
• Whole Effluent Toxicity [WET] - D. pulex 25
• Whole Effluent Toxicity [WET] - M. beryllina 37
• Whole Effluent Toxicity [WET] - Americamysis bahia (formerly Mysidopsis bahia) 42
• Whole Effluent Toxicity [WET] - P. promelas 151
• Precipitation volume 331
• Fish feed used efficiency 12
• Flow, in conduit or thru treatment plant 45
• Screen Area Blockage 20
• Intake Velocity Excusions 20
• Fish/Shellfish Impinged 20
• Poly[hexamethylenebiguanide] hydrochloride 16
• Total Production - volume 4
• Iron, ferrous - present 3
• Volume, total 72
• Percent Base Saturation 11
• Hydroxide 11
• Radium, total 4

Permits