United States. Environmental Protection Agency. Office of Water Regulations and Standards. Criteria & Standards Division

• Ambient aquatic life water quality criteria for selenium
• Ambient water quality criteria for 2-chlorophenol
• Ambient water quality criteria for Carbon tetrachloride
• Ambient water quality criteria for chlorinated naphthalene
• Ambient water quality criteria for chloroalkyl ethers
• Ambient water quality criteria for lead
• Ambient Water Quality Criteria for pentachlorophenol
• Ambient water quality criteria for Phthalate Esters
• Ambient water quality criteria for polynuclear aromatic hydrocarbons
• Ambient water quality criteria for vinyl chloride
• National summary of state water quality standards