For copies of the complete regulations regarding these contaminants, follow these links to the National Primary Drinking Water Regulations and National Secondary Drinking Water Regulations . Higher turbidity levels are often associated with higher levels of disease-causing microorganisms such as viruses, parasites and some bacteria. These organisms can cause symptoms such as nausea, cramps, diarrhea, and associated headaches. People with Wilson's Disease should consult their personal doctor if their water systems exceed the copper action level. Delays in physical or mental development.
Infant looks blue and has shortness of breath.
Infant looks blue and has shortness of breath. MCLs are set as close to MCLGs as feasible using the best available treatment technology and taking cost into consideration. MCLs are enforceable standards. The level of a contaminant in drinking water below which there is no known or expected risk to health. MCLGs allow for a margin of safety and are non-enforceable public health goals.