Earl E. Preston Jr., Inc. provides Complete Commercial & Residential Septic Service and Excavation Services in the following areas of Harford & Baltimore County, Maryland: Ruxton, Towson, Hunt Valley, Cockeysville, Reisterstown, Pikesville, Baldwin, Glyndon, Lutherville, Timonium, Monkton, Owings Mills, Parkton, Phoenix, Sparks-Glencoe, White Hall. One call Does It All! Give us a call at 410-557-8100