Improve your plumbing system with services from our plumbing contractors in Hammonton, New Jersey. Dennis LaSassa Jr. Plumbing LLC is a family-owned-and-operated company established more than 40 years ago. Throughout the last four decades, the business has been passed down from grandfather to father to son, who is the current owner and has owned it since 1999. We are pleased to continue to offer the dependable services you know and trust.