Sewer summary
Columbia borough, Lancaster County, Pennsylvania. Population: 10,399. Land area: 2.4 sq mi. Sewer service, backups, manholes and wastewater.
Recorded local data
Population10,399Source: census_popest_cousub. Population year: 2024.
Land area2.4 sq miSource: census_gazetteer. Geography year: 2023. Water area is excluded.
Derived from recorded data
Residents per square mile4,308.0Population / land area. Population and geography may refer to different years.
Model scenario
Service connections~ 59Scenario: (population / 2.45 (assumed people per household)) x 0.014. Coefficients are assumptions, not locally measured rates. Not a verified object count.
Manhole zones~ 1Scenario: (population / 10,000) x 1.1. Coefficients are assumptions, not locally measured rates. Not a verified object count.
Model values are scenarios, not an inventory or evidence that a service exists. Queues, applications, incidents, service users and unsafe homes are not inferred from population. Missing data does not mean zero.