The Power of Information

National Drinking Water Database


Town of Hempstead Wd Utilities - Great Neck, NY


Serves 110,000 people

cis-1,2-Dichloroethylene

cis-1,2-Dichloroethylene is a pollutant discharged by various industrial chemical factories from the manufacture of plastic wrap, adhesives and synthetic fiber.
 
This Drinking Water System
Test Days Exceeding Health GuidelinesDefinition of what this is
0 days
Test Days Exceeding Legal LimitsNumber of days in which the samples taken in that day exceed the Maximum Contaminant Level (Depending on the contaminant and its MCL, that may or may not trigger an MCL violation. Some MCLs are based on averages spanning several months to a year)
0 days
Test DaysNumber of days in which this chemical has reported results in the data we received from the State
159 days
Tests ConductedNumber of individual tests done for this contaminant
876 tests

Testing Summary

ContaminantAverage/
Maximum
Result
Health Limit
Exceeded
Legal Limit
Exceeded

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
cis-1,2-Dichloroethylenecis-1,2-Dichloroethylene is a pollutant discharged by various industrial chemical factories from the manufacture of plastic wrap, adhesives and synthetic fiber.0.6 ppb
13.5 ppb
No
70 ppb
No
70 ppb
NOTE: Each dot in the above graph represents one month.
* Water utilities are noted as exceeding the legal limit if any test is above the maximum contaminant level (MCL). Most MCLs are based on annual averages so exceeding the MCL for one test does not necessarily indicate that the system is out of compliance.

Health Based and Legal Limits for cis-1,2-Dichloroethylene

Health Based Limits for cis-1,2-Dichloroethylene

StandardDescriptionLevel
Maximum Contaminant Limit (MCL)The enforceable standard which defines the highest level of a contaminant that is allowed in drinking water. MCLs are set as close to health-based limits (Maximum Contaminant Level Goals, or MCLGs) as feasible using the best available analytical and treatment technologies and taking cost into consideration. Source: U.S. Environmental Protection Agency.70 ppb
Maximum Contaminant Limit Goal (MCLG)A non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.70 ppb
Lifetime health-based limit, non-cancer riskConcentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic health effects for a lifetime of exposure. The Lifetime health-based limit (or Health Advisory, HA) is based on exposure for a a 70-kg adult consuming 2 liters of water per day. Source: U.S. Environmental Protection Agency.70 ppb
Drinking Water Equivalent LevelA lifetime exposure concentration protective of adverse, noncarcinogenic health effects, that assumes all of the exposure to a contaminant is from drinking water. Source: U.S. Environmental Protection Agency.350 ppb
Children's health-based limit for 10-day exposureConcentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic effects for up to ten days of exposure. The Ten-Day health-based limit (or Health Advisory, HA) is typically set to protect a 10-kg child consuming 1 liter of water per day. Source: U.S. Environmental Protection Agency.1000 ppb
Children's health-based limit for 1-day exposureConcentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic health effects for up to one day of exposure. The One-Day health-based limit (or Health Advisory, HA) is typically set to protect a 10-kg child consuming 1 liter of water per day. Source: U.S. Environmental Protection Agency.4000 ppb

Testing Results

Testing DateAverage
Result
Samples taken that dayNumber of Non-DetectsRange of Results
2009-02-010.36 ppb20160 to 3.8 ppb
2008-12-010.54 ppb960 to 3.1 ppb
2008-12-010.12 ppb1090 to 1.2 ppb
2008-11-010.35 ppb15120 to 3.7 ppb
2008-11-010 ppb110 ppb
2008-11-011.4 ppb101.4 ppb
2008-10-010 ppb330 ppb
2008-10-010 ppb660 ppb
2008-10-010 ppb110 ppb
2008-10-010.14 ppb870 to 1.1 ppb
2008-10-010 ppb330 ppb
2008-09-010 ppb770 ppb
2008-09-010.19 ppb21180 to 1.4 ppb
2008-09-011.31 ppb720 to 4 ppb
2008-09-011.1 ppb101.1 ppb
2008-09-010 ppb110 ppb
2008-08-010 ppb220 ppb
2008-08-010.13 ppb980 to 1.2 ppb
2008-08-010.16 ppb760 to 1.1 ppb
2008-08-011.27 ppb740 to 4.5 ppb
2008-08-010 ppb220 ppb
2008-08-010 ppb110 ppb
2008-08-010 ppb660 ppb
2008-07-010 ppb220 ppb
2008-07-010 ppb220 ppb
2008-07-010.74 ppb850 to 3.9 ppb
2008-07-010 ppb110 ppb
2008-07-010 ppb330 ppb
2008-07-010 ppb220 ppb
2008-06-010.09 ppb870 to 0.7 ppb
2008-06-010.13 ppb650 to 0.8 ppb
2008-06-012.79 ppb750 to 18.4 ppb
2008-06-010 ppb220 ppb
2008-06-010 ppb110 ppb
2008-06-010 ppb220 ppb
2008-05-010.09 ppb12110 to 1.1 ppb
2008-05-010 ppb880 ppb
2008-05-010 ppb110 ppb
2008-05-010.28 ppb430 to 1.1 ppb
2008-04-010 ppb330 ppb
2008-04-010.18 ppb650 to 1.1 ppb
2008-04-010 ppb220 ppb
2008-04-010 ppb110 ppb
2008-03-010 ppb440 ppb
2008-03-010 ppb110 ppb
2008-03-010 ppb220 ppb
2008-03-010.12 ppb540 to 0.6 ppb
2008-02-010.16 ppb540 to 0.8 ppb
2008-02-010.59 ppb960 to 3.4 ppb
2008-02-010 ppb220 ppb
2008-02-010 ppb110 ppb
2008-01-010 ppb220 ppb
2008-01-010.23 ppb320 to 0.7 ppb
2008-01-010 ppb110 ppb
2008-01-010.13 ppb870 to 1 ppb
2008-01-010 ppb660 ppb
2008-01-010 ppb110 ppb
2008-01-010 ppb110 ppb
2007-12-010.23 ppb430 to 0.9 ppb
2007-12-010 ppb330 ppb
2007-12-010 ppb770 ppb
2007-12-011 ppb320 to 3 ppb
2007-12-010 ppb220 ppb
2007-11-010.31 ppb11100 to 3.4 ppb
2007-11-010.08 ppb11100 to 0.9 ppb
2007-11-010 ppb660 ppb
2007-11-010 ppb440 ppb
2007-11-010 ppb440 ppb
2007-11-010 ppb110 ppb
2007-11-010 ppb110 ppb
2007-11-010 ppb110 ppb
2007-11-010 ppb220 ppb
2007-10-010.46 ppb970 to 3.6 ppb
2007-10-014.17 ppb760 to 29.2 ppb
2007-10-010.25 ppb430 to 1 ppb
2007-10-010.26 ppb960 to 1 ppb
2007-09-010 ppb110 ppb
2007-09-010.14 ppb870 to 1.1 ppb
2007-09-012.15 ppb14120 to 26.6 ppb
2007-09-010 ppb770 ppb
2007-08-015.44 ppb1080 to 27.2 ppb
2007-08-010.15 ppb22200 to 2.8 ppb
2007-07-010.08 ppb1090 to 0.8 ppb
2007-07-012.03 ppb12110 to 24.3 ppb
2007-07-010 ppb550 ppb
2007-07-010 ppb660 ppb
2007-07-010 ppb220 ppb
2007-07-010 ppb660 ppb
2007-06-010 ppb440 ppb
2007-06-010 ppb550 ppb
2007-06-010.25 ppb210 to 0.5 ppb
2007-06-010 ppb110 ppb
2007-06-015.25 ppb420 to 18 ppb
2007-05-011.55 ppb11100 to 17 ppb
2007-05-010.43 ppb760 to 3 ppb
2007-05-010 ppb990 ppb
2007-05-010 ppb220 ppb
2007-05-010 ppb220 ppb
2007-05-010 ppb220 ppb
2007-05-010.5 ppb100.5 ppb
2007-04-010.3 ppb15120 to 3 ppb
2007-03-011 ppb310 to 2 ppb
2007-03-010.67 ppb650 to 4 ppb
2007-03-010.17 ppb650 to 1 ppb
2007-02-010.44 ppb970 to 3 ppb
2007-02-010 ppb660 ppb
2007-02-011 ppb101 ppb
2007-01-010.33 ppb12110 to 4 ppb
2007-01-010 ppb330 ppb
2007-01-010.29 ppb760 to 2 ppb
2007-01-010 ppb330 ppb
2007-01-010 ppb220 ppb
2007-01-010 ppb110 ppb
2007-01-010 ppb220 ppb
2007-01-010 ppb110 ppb
2007-01-010 ppb110 ppb
2006-12-010 ppb880 ppb
2006-12-010 ppb220 ppb
2006-12-010 ppb330 ppb
2006-12-011.33 ppb310 to 3 ppb
2006-11-012 ppb210 to 4 ppb
2006-11-010 ppb330 ppb
2006-11-010 ppb660 ppb
2006-11-010.67 ppb320 to 2 ppb
2006-10-0113.5 ppb210 to 27 ppb
2006-10-010 ppb440 ppb
2006-10-011 ppb420 to 3 ppb
2006-10-010.13 ppb870 to 1 ppb
2006-09-012.82 ppb1170 to 25 ppb
2006-09-010 ppb880 ppb
2006-08-010 ppb220 ppb
2006-08-010 ppb330 ppb
2006-08-010 ppb20200 ppb
2006-08-011.23 ppb47370 to 24 ppb
2006-06-010.17 ppb15130 to 2 ppb
2006-06-012.1 ppb20180 to 21 ppb
2006-05-010.83 ppb310 to 2 ppb
2006-05-010 ppb110 ppb
2006-05-010 ppb660 ppb
2006-05-010 ppb550 ppb
2006-05-010 ppb220 ppb
2006-05-010 ppb330 ppb
2006-05-010 ppb220 ppb
2006-05-010 ppb220 ppb
2006-05-0110 ppb210 to 20 ppb
2006-05-010 ppb330 ppb
2006-04-010 ppb330 ppb
2006-04-010.83 ppb620 to 2 ppb
2006-04-014.5 ppb430 to 18 ppb
2006-04-010 ppb12120 ppb
2006-03-010 ppb880 ppb
2006-03-010 ppb770 ppb
2006-02-0110 ppb210 to 20 ppb
2006-02-010 ppb10100 ppb
2006-02-010.17 ppb320 to 0.5 ppb
2006-01-010 ppb440 ppb
2006-01-011.45 ppb1070 to 12 ppb
2006-01-010.75 ppb200.5 to 1 ppb
2006-01-010 ppb220 ppb