Emergency Plumber in Central Islip, NYCesspool Backups, Townhouse Leaks

Suffolk County's sewer-district map, laid over the Census boundary, puts only about 23% of the hamlet's area inside Sewer District No. 3, mostly in its southern half. Everywhere else, the house drains to a cesspool or septic system. When every drain in the house backs up at once, there are two possibilities: a blockage in the line between the house and the cesspool, or a cesspool that's full or failing. We clear the house's main line first, which tells you which one it is. If the line is clear and water still won't go down, you need a cesspool or septic contractor; we don't do cesspool work. Suffolk County's health department says that since July 1, 2019, a failed cesspool can't be replaced with another cesspool, so the contractor will talk to you about the options.

16% of Central Islip homes are single-family attached townhouses, many in developments built since the mid-1990s, when the hamlet saw a wave of new housing. In a townhouse, the water heater and supply lines often sit in a closet next to finished rooms, and a leak can travel into the unit next door. Shut off the water at the main or the heater's cold supply, and if water has reached a neighbor's wall, tell them and your HOA.

• Water in the street or at the curb: the Suffolk County Water Authority, (631) 698-9500.
• Gas smell: leave, then call National Grid at 1-800-490-0045 or 911.
• Inside the house, the house drain, water heaters and your side of the meter: us, at (631) 644-2084.