The following areas are No Discharge Areas (NDAs) in Massachusetts:

• Outer Cape Cod - the coastal waters off Chatham, Orleans, Eastham, Wellfleet, Truro, and Provincetown, including Nauset Harbor.
• Upper North Shore - the coastal waters of Gloucester, Rockport, Essex, Ipswich, Rowley, Newbury, Newburyport, Salisbury, including the Merrimack River in Amesbury, West Newbury, Merrimac, Groveland, North Andover, Haverhill, Methuen, and Lawrence.
• Pleasant Bay (Brewster, Orleans, Harwich, and Chatham) and Chatham Harbor
• The coastal waters of Revere, Saugus, Lynn, Nahant, and Swampscott, including the Pines and Saugus Rivers
• All of Cape Cod Bay (PDF, 1 MB)
• Boston Harbor (PDF, 2.3 MB) - the coastal waters of Winthrop, Chelsea, Everett, Boston, Quincy, Milton, Weymouth, Braintree, Hingham, and Hull, including the Charles River in Watertown, Newton, and Cambridge
• Salem Sound (PDF, 96 KB) - the coastal waters of Manchester-by-the-Sea, Beverly, Danvers, Salem, and Marblehead
• The coastal waters of Cohasett, Scituate, and Marshfield (PDF, 322 KB)
• The coastal waters of Plymouth, Kingston, and Duxbury
• All of Buzzards Bay
• Waquoit Bay in Falmouth
• The coastal waters of Harwich
• Three Bays/Centerville Harbor in Barnstable
• Stage Harbor in Chatham
• The coastal waters of Nantucket from Muskeget Island to Great Point, including Nantucket Harbor