"East of Islip."
Wikipedia says the area was once called "East of Islip" and took its name in 1890 from the estate of William Nicoll, who bought 51,000 acres from the Secatogue in 1683; his mansion, Islip Grange, stood near what is now Heckscher State Park, and the shore was later lined with estates of wealthy families. The CDP covers about 4.1 square miles and borders Islip, Islip Terrace, North Great River and Great River, with the Great South Bay to the south.
The Census Bureau's latest five-year survey counts about 4,800 homes, with a median year built of 1956. 42% went up in the 1950s, 16% before 1940, and 15% after 1980. 87% are single-family detached houses, and 89% are owner-occupied.
So a typical house here has drain and water lines around 70 years old unless they've been replaced. Slow drains in several fixtures, a gurgling floor drain or rusty water from one tap are signs to have the main line and supply piping checked.
Oil to gas means new gas piping.
The ACS shows 33% of homes heat with utility gas and 51% with fuel oil. Switching means properly sized gas piping to the new equipment, and often to the water heater, range and dryer. We do the gas line work. We don't sell or deliver oil.
Mostly sewered.
Laying Suffolk County's sewer-district map over the Census boundary puts about 86% of the hamlet in the Southwest Sewer District (Sewer District 3). The rest is outside a district, where homes rely on cesspools or septic systems. Your tax bill shows a sewer district charge if you're in one. A backup that stops at your house is usually in your own line to the street; we clear it and repair or replace the line. If neighbors are backed up too, call Suffolk County DPW (Sewer District 3 / Southwest). If you're outside the district, the line runs to a cesspool or septic tank: we clear the line from the house, but a full or failing cesspool is a job for a cesspool or septic contractor, since we don't do cesspool work.
Flood risk.
Laying FEMA's current flood map over the Census boundary, about 11% of East Islip is in the high-risk (1% annual chance) flood zone (9.5% in zone AE, 1.8% in zone VE; shares of the Census area, water included). On a sewered street, a backwater (sewer check) valve on your house sewer line can keep a street-sewer backup from coming in through basement floor drains. We install them. If your water heater or gas appliances ever sat in flood water, have them checked before relighting.
Water: Suffolk County Water Authority (SCWA).
EPA's service-area map puts essentially all residents on the Suffolk County Water Authority (SCWA); your bill is the final word. In EPA's UCMR 5 testing, the main supplier's highest single PFOA/PFOS result was 17 parts per trillion. EPA's 4 ppt limits apply as a running annual average starting in 2029, so one high sample is not a violation, but it's the kind of number a carbon filter is sized against. For a leak at the curb or in the street, call your water supplier (SCWA: (631) 698-9500). For anything on your side of the meter, call us.
Permits.
East Islip is an unincorporated hamlet, so plumbing permits go through the Town of Islip Building Division.
