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What's in my Water

Port Washington Water District

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What percentage of tests exceeded a level that could cause health effects:

53.3% 8 out of 15
samples
1,4-dioxane Suspected carcinogen

Possible carcinogen that attacks the nasal cavity, kidney and liver. A clear liquid that dissolves in water and is used primarily as a manufacturing solvent, although it can also be found in personal care items such as soap. Of 1,062 tests nationwide that exceeded the level, 221, or 20 percent, were on Long Island. Prolonged exposure above the level could lead to one additional cancer case per 1 million population.

What percentage of tests showed substances that have no set health-safety level:

77.8% 14 out of 18
samples
Hexavalent chromium Toxic substance

Used in chrome-plating, dyes, pigments, tanning leather and preserving wood, if inhaled it can cause lung cancer, stomach tumors and skin ulcers. The government is reviewing its toxicity in drinking water and has set no threshold for dangerous exposure. It was detected in 1,247 of 1,417 tests on Long Island.

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Health Concern

May cause cancer
May cause other ills
Uncertain

More on Long Island Water

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