Municipal Authority

History of the Municipal Authority

In the mid 1960's with the rapid growth of Cumberland County moving westward into South Middleton Township, and certain requirements to provide a long range sewage plan, the Township created a municipal authority. It was formally incorporated on April 3, 1969. Since incorporation, the South Middleton Municipal Authority has embarked on many projects for the betterment of the environment and the community. The Authority has approximately 4,500 sewer and water customers.

As of December 31, 2014, the Authority Sewage System consisted of:
  • 550,000 gallons per day capacity at the Wastewater Treatment Plant located in Monroe Township. It is currently being upgraded/expanded and the capacity will be at 1,300,000 gallons per day when completed.
  • 1,010,000 gallons per day capacity at the Carlisle Regional Wastewater Treatment Plant
  • 200,000 gallons per day capacity at the Mt. Holly Springs Wastewater Treatment Plant
  • 11 pumping stations
  • 71 miles of sewage mains
  • 1,690 manholes
  • 8.2 miles of force mains
  • 4,478 customers

Public Water Supply

The Authority provides public water supply service to South Middleton Township residents and businesses as well as portions of Middlesex, North Middleton, and Dickinson Townships. Furthermore, the Authority provides emergency water service, as-needed, to Carlisle and Mt. Holly Springs Boroughs.

As of December 31, 2014, the Authority's water system consisted of:
  • 3 well houses
  • 5 storage tanks
  • 68 miles of water mains
  • 460 fire hydrants

Holiday Schedule

  • New Year's Day
  • Good Friday
  • Memorial Day
  • Independence Day
  • Labor Day
  • Veterans Day
  • Thanksgiving Day
  • Friday after Thanksgiving
  • Christmas Day


The Authority holds meetings on the second and fourth (if needed) Mondays at 6 p.m. of each month at 345 Lear Lane.