Standards, water quality

Water Quality Standards. Water quaUty standards are usually based on one of two primary criteria, stream standards or effluent standards. Stream standards are based on dilution requirements for the receiving water quaUty based on a threshold value of specific pollutants or a beneficial use of the water. Effluent standards are based on the concentration of pollutants that can be discharged or on the degree of treatment required. 

In 1965 the Water Quahty Act established a new trend in water pollution control. It provided that the states set water quality standards in accordance with federal guidelines. If the states f ed to do so, the standards would be set by the federal government subject to a review hearing. In 1966, the Clean Water Restoration Act transferred the Feder Water Pollution Control Administration from the Department of Health, Education and Welfare to the Department of the Interior. It also gave the Interior Department the responsibility for the Oil Pollution Act. 

The Clean Water Act strives to restore and maintain the chemical, physical, and biological integrity of the nation s water. The act sets up a system of water quality standards, discharge limitations, and permits. If a project may result in the... 

Criteria Set values used to establish guidelines for air or water quality standards. 

In contrast to traditional ambient fixed station "parametric approaches to river quality evaluation for trends determination and water quality standards attainment, data from the Willamette River, Oregon, USA were used to demonstrate the value of quantitative, semi-quantitative and qualitative approaches to mechanistic assessment of river water quality. 

Table 1 Generalized industrial water quality standards...

Hawaii Department of Health 1999. Endosulfan. Clean Water Division. Chapter 11-54- Water Quality Standards (pdf 115 kb). httD //www.hawaii.gov/health/... 

New Jersey Department of Environmental Protection. 1993. Ground water quality standards. Department of Environmental Protection. Division of Water Quality. NAJC 7 9-6. http //www.state.ni. us/deo/. 

Washington, D.C. Water Quality Standards Class C waters protected for aquatic life, waterfowl, shore birds, and water-oriented wildlife Class D waters protected for use as a raw water source for public water supply 1000 mg/L 3.0 mg/L CELDS 1990... 

Direct discharges are discharges from point sources into surface water pursuant to a National Pollutant Discharge Elimination System (NPDES) permit. NPDES permits are granted on a case-by-case basis and limit the permissible concentration of toxic constituents or conventional pollutants in effluents discharged to a waterway. These limits are generally established on the basis of the best available treatment technology and, where necessary, to protect surface water quality standards. 

U.S. Environmental Protection Agency (USEPA). 1995b. Water quality standards establishment of numeric criteria for priority toxic pollutants states compliance — revision of metals criteria. Fed. Reg. 60 (86) 22229-22237. 

Water quality standards, 21 581-583 Water reactions, supercritical, 24 16-17 Water-reducers, for cement, 5 485 Water-reduction strategies, in papermaking, 16 126-127 Water removal... 

EPA. 1988d. State water quality standards summaries. U.S. Environmental Protection Agency, Office of Water, Washington, DC. EPA-440/5-88-031. 

NATIONAL Ccont.1 Proposed Rule Great Lakes System Water Quality Standards 58 FR 20802 EPA 1993a... 

LA Water Res. Div. 1998. Surface water quality standards Criteria. Louisiana Water Resources Division, Department of Environmental Quality. Part IX, Ch 11-1113. 

MO Water Pol. Con. Pro. 1998. Water quality standards Criteria for designated uses. Missouri Water Pollution Control Program, Division of Environmental Quality, Department of Natural Resources. 10 CSR 20-7.031. 

SD Office Drink. Water 1998. Secretary s certification of compliance with water quality standards Toxic pollutant criteria. South Dakota Office of Drinking Water, Department of Environmental and Natural Resources. 74 51 01 65, Appendix B. 

Wastewater pretreaters that discharge water into sewer systems have new requirements. Pollutant standards for sewage sludge have been set. Toxics in the water must be identified and plans must be developed to alleviate any problems. In addition, regulators have established, and continue to establish, water-quality standards for priority toxic pollutants. 

Water Quality Standards for Toxic Pollutants 40 CFR Part 131... 

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