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What's in my Water

Suffolk County Water Authority, Area 23

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

12.5% 4 out of 32
samples
1,2,3-trichloropropane Volatile Organic Compound

Used as an ingredient in paint, varnish remover, solvents and degreasing agents. 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:

96.8% 61 out of 63
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

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