What regulation does Primary Drinking Water Regulation follow?

• A. 40 CFR 141
• B. 40 CFR 143
• C. 40 CFR 136
• D. 40 CFR 142

Answer: (A)

Primary Drinking Water Regulations are enforceable standards under the Safe Drinking Water Act and are published in 40 CFR Part 141. These standards set maximum contaminant levels and treatment techniques to protect public health. The other parts cover different aspects: secondary standards for aesthetics are in 40 CFR Part 143, the approved methods for water testing are in 40 CFR Part 136, and implementation/primacy by states is addressed in 40 CFR Part 142.