Sewer charges shall be used for deriving revenues
for financing and maintaining sewage collection and treatment facilities.
The funds derived from these charges shall be used for all municipal
expenses associated with constructing, improving or maintaining a
sewerage system, including engineering, planning, construction, reconstruction
of sewers and all necessary appurtenances thereto, including pumping
stations, extensions, enlargements, replacements or additions to the
sanitary sewer systems or the preliminary or other studies and surveys
relative thereto and for the acquisition of land or rights-of-way
for any of the capital improvements.