Commack Community Association  Bob Semprini, President

 The water authority always offers an outstanding presentation regarding our drinking water.  We learned that much of Long island is over an aquifer. The surface Upper glacial aquifer is too polluted in most areas to draw drinking  water. . The deepest  purest aquifer is the Lloyd aquifer. Only Long  Beach and Atlantic Beach draw pure water from the Lloyd due to salt water intrusion into their  wells in the Magothy aquifer.  As more water is pumped from the Magothy water aquifer, which supplies our water, more salt  water intrusion occurs. 

Seventy percent of the SCWA wells do not require treatment. Of the wells that require treatment, 119 GAC tank carbon filters have been installed and are maintained by Calgon water technicians  The charcoal carbon filters are being replaced with coconut shells which remove even more pollutants.  A test system to remove 1-4 dioxane is working well enough to be approved by the Dept of Health. There are also 29 Iron/manganese removal systems to clear these elements which can clog pipes.If the water tastes different from time to time it is because Lime is added to the water to maintain a neutral (7) ph factor There is a new material being used for water pipes It is called Ductile iron concrete lined pipe.

• A heat pump is supposed to be installed with a well in the customer yard. If not, you will draw water from Suffolk   County Water authority as did one estate in the Hamptons ,which drew  25 million  gallons  in one year for their heat pump and  other uses.
• Storage of town highway winter salt and sand is now inside of a covered building in Islip Terrace, because the rain was washing it into the nearby SCWA well. Salinity increased causing  issues.