Amendments to SDWA

Chloride 250mg/L Salty taste corrosion of pipes 

Copper 1.0mg/L Metallic taste blue-green staining of porcelain 

Corrosivity Noncorrosive Metallic taste fixture staining corroded pipes (corrosive water can leach pipe materials, such as lead, into drinking water) 

Fluoride 2.0mg/L Dental fluorosis (brownish discoloration of the teeth) 

Foaming agents 0.5 mg/L Aesthetic frothy, cloudy, bitter taste, odor 

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The 1996 Amendments to SDWA require that every 5 years US-EPA establish a list of contaminants which are known or anticipated to occur in public water systems and may require future regulations under SDWA. The list is developed with significant input from the scientific community and other interested parties. After establishing this contaminant candidate list, US-EPA identifies contaminants, which are priorities for additional research and data gathering. US-EPA uses this... 

Implementation of the 1986 Amendments to SDWA led to the development of a number of important rules, including the Total Coliform Rule, the Surface Water Treatment Rule, the Lead and Copper Rule, and regulations for a large number of chemicals of public health concern. All public water systems using surface water sources were required to disinfect and provide specific levels of treatment for microbial pathogens most systems were required to filter their water. In addition, the best available technology was specified for the treatment of contaminants for which an MCL was established. 

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