NYS_WATER.csv 

Water system levels of Arsenic (1005), Atrazine (2050), Di(2-Ethylhexyl) Phthalate (DEHP) (2039), 1,4-Dioxane (2049), Haloacetic acids (HAA5) (2456), Tetrachloroethylene (PCE) (2987), Trichloroethylene (TCE) (2984), Trihalomethanes (TTHM) (2950) and Uranium (4006) are in micrograms per liter (mcg/L).
Water system levels of Nitrate (1040) are in milligrams per liter (mg/L).
Water system levels of Combined Radium 226 & 228 (4010) are in picoCuries per liter (pCi/L).
Water system levels of Perfluorooctanoic acid (PFOA) (2806) and Perfluorooctane sulfonic acid (PFOS) (2805) are in nanograms per liter (ng/L). 

Data fields:

Variable               Description
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ContaminantCode	       Code of the analyte. 1005 is Arsenic, 2050 is Atrazine, 2039 is DEHP, 2049 is 1,4-Dioxane, 2456 is HAA5, 1040 is Nitrate, 2987 is PCE, 2806 is PFOA, 2805 is PFOS, 2984 is TCE, 2950 is TTHM, 4010 is Radium, and 4006 is Uranium

FIPS	               FIPS code (State+county) of the primary county served by the public water supply system

Max	               Maximum concenteration of the analyte during the summary time period, ND is non-detect

Mean	               Average (mean) concentration of the analyte during the summary time period, ND is non-detect

NumNonDetects	       The number of samples that were non-detections for summary level data

NumSamples	       The number of samples that were used in calculating the mean/max for a given analyte during a quarter or year

PWSIDNumber	       Unique Identifier of Public Water Supply System

PWSName	               Name of Public Water Supply System

Population	       Estimated population served by the public water supply system

SummaryTimePeriod      Period of time, Year (YYYY) or Year-Quarter (YYYY-Q)

contaminantname	       Chemical name of the analyte

county	               Name of the primary county served by the public water supply system

range_of_max	       Range of the maxiumum concentration, to use when plotting data, from prior CDC EPHT website

range_of_mean	       Range of the average concentration, to use when plotting data, from prior CDC EPHT website


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Original data was obtained from the Safe Drinking Water Information System (SDWIS), Suffolk County Department of Health Services, and Suffolk County Water Authority.

Drinking Water data were provided by the New York State Department of Health Bureau of Water Supply Protection. 
For more information about drinking water data please visit https://www.health.ny.gov/environmental/water/drinking/