POSC350 Lecture Notes - Lecture 9: Nonpoint Source Pollution, Emissions Trading, Combined Sewer
6 Mar 2018
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Document Summary
Safe drinking water act of 1974, 1986, 1996. Permits to all major point sources by 1974. Converted to revolving loan fund in 1987. Pretreatment of industrial wastes sent to public treatment plants. States establish criteria for determining if uses are being attained. If use is not fishable/swimmable, attainability analysis must be done every 3 years. Anti-degradation policy: 3 tiers, protection for high and outstanding quality waters. Must be sufficient to protect uses, based on science. Epa standards or ones justified by states. Numerical or narrative describe the chemical, physical and biological conditions necessary for safe use of waters by humans and aquatic life. Numerical criteria for priority toxic pollutants for which epa has published criteria. Fight over lack of numerical standards in some states. 27. 9% of rivers/streams, 44. 9% of lakes, ponds, and reservoirs, 37. 2% of estuaries & bays surveyed by states. 52. 5%, 67. 5%, 66. 1% of assessed waters impaired, respectively.
