Drain Doctor, Inc. offers professional sewer and drain cleaning for commercial, industrial, and residential customers servicing main lines, sink lines, bathtubs, toilets, roof drains, and rain leaders. The company states that they are fully insured.  Branches in MA include Malden (781-322-2003), Waltham (781-890-2659), Woburn (781-938-1133), Lynn (781-598-0822), Revere (781-286-3009), Cambridge (617-547-6969), Lowell (978-454-9992), Lawrence (978-686-8003), Somerville (617-628-8833), Wellesley (781-235-6030), Dedham (781-461-8881), and Brockton (508-583-8866).