Section 1A. Notwithstanding the provisions of sections 1 and 3 to the contrary, any municipality or sewer district adopting this section is hereby authorized to lay out, construct, maintain and operate a system or systems of common sewers and main drains in public or private ways for that part of its territory as it adjudges necessary to reduce or eliminate the impacts of nutrient enrichment on surface water bodies or sources of drinking water with such connections and other works as may be required for a system or systems of sewerage and drainage, and sewage treatment and disposal. Adoption of this section is subject to majority vote of the municipality and subject further to said municipality having an approved comprehensive water resources management plan hereinafter referred to as (CWMP) as defined by the department of environmental protection hereinafter referred to as (DEP).