Residents in the Dix Hills Water District no longer have to boil their the water before consumption after 21 samples taken Saturday all tested negative for coliform bacteria.
The Suffolk County Department of Health Services today lifted the boil water notice and declared that it is safe to drink from the tap.
Samples taken last week on Dec. 27 and 28 detected total coliform bacteria in the distribution system, officials of the Dix Hills Water District began chlorination. The district hand-delivered notices to its 8,000 customers informing them of the results and giving information about coliform bacteria in water and instructions about boiling water.
Subsequent testing, beginning after the Dec. 28 test and before chlorination started, and all tests since have proven negative for coliform bacteria.
The Dix Hills Water District, its consulting engineer and its state-approved laboratory are investigating what caused the bacteria to appear. The Suffolk County Department of Health Services is also investigating the source of the contamination in the samples. The District is continuing the chlorination.