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Landis Sewerage Authority
Wastewater Treatment Plant & Land Application Facilty

The old treatment plant included processes able to provide primary treatment only for up to 7 million gallons per day (MGD) of average annual flow. Disposal of the treated effluent was through 85 acres of rapid infiltration basins at the plant site. This system was not adequate to meet State or Federal requirements to protect area groundwater from detrimental effects of constituents in the flows to the treatment facilities from residential, commercial and industrial sources. The Authority was also to assume treatment responsibilities for the old City of Vineland wastewater treatment plant and service area. Additional treatment capacity was necessary to accommodate new growth and remove the NJDEP imposed sewer moratorium.

The 8.2 MGD secondary and tertiary treatment components include biological treatment and nitrogen removal through aeration and denitrification as well as secondary clarification and chlorine disinfection. All components are designed in accordance with NJDEP requirements. Effluent from the plant will be spray irrigated onto 180 acres of forestland; 115 acres of rehabilitated rapid infiltration basins will also continue to be used for effluent disposal.

For disposal of biologically treated, digested sludge from the new process, a 380 acre agriculture land application site has been developed. Liquid sludge will be injected into the subsurface or surface applied to the acreage to provide nutrients during the growing season for the field corn, rye straw, orchard, timothy or mixed hay. During the winter, sludge will be stored in two 1.9 million gallon tanks at the plant.

Operation costs of the new facility are substantially higher than the old system because of the higher level of treatment required by the NJDEP. The plant is operated as cost effectively as possible within the constraints of the NJDEP operating permit. The new facility is staffed 24 hours per day, 365 days per year due to the complexity of the operations and requirements of the NJDEP. While costs are higher, the LSA has managed its costs wisely and passed those savings onto the rate payers with fewer increases and lower rates.

Currently the Authority service area consists of 80 square miles of which 40 square miles are sewered for current user population of 37,000. Also, the Authority’s infrastructure consists of 120 miles of collection system and 24 pump stations. While the LSA provides a modernized, cost-effective and environmentally sound treatment and disposal system for its customers, the Authority is continuing to plan for the future. New and changing regulations, growing populations and increasing environmental concerns make it imperative to continue moving forward. Plans are being implemented to expand the facilities to 10.2 MGD for future growth in the City of Vineland.