The Power of Information

National Drinking Water Database


Hicksville Wd Utilities - Great Neck, NY


Serves 47,810 people

Trichloroethylene

Trichloroethylene is used to remove grease from fabricated metal parts and in the production of some textiles; this pollutant comes from metal degreasing sites, metal finishing and rubber processing industries.
 
This Drinking Water System
Test Days Exceeding Health GuidelinesDefinition of what this is
166 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)
129 days
Test DaysNumber of days in which this chemical has reported results in the data we received from the State
187 days
Tests ConductedNumber of individual tests done for this contaminant
900 tests

Testing Summary

ContaminantAverage/
Maximum
Result
Health Limit
Exceeded
Legal Limit
Exceeded

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
TrichloroethyleneTrichloroethylene is used to remove grease from fabricated metal parts and in the production of some textiles; this pollutant comes from metal degreasing sites, metal finishing and rubber processing industries.6.4 ppb
14.97 ppb
Yes
MCLGA 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.: 0 ppb
Yes
5 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 Trichloroethylene

Health Based Limits for Trichloroethylene

StandardDescriptionLevel
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.0 ppb
EPA Human Health Water Quality CriteriaWater quality criteria set by the US EPA provide guidance for states and tribes authorized to establish water quality standards under the Clean Water Act (CWA) to protect human health. These are non-enforceable standards based upon exposure by both drinking water and the contribution of water contamination to other consumed foods. Source: U.S. Environmental Protection Agency.0.03 ppb
California Public Health GoalsDefined by the State of California Office of Environmental Health Hazard Assessment (OEHHA) as the level of contaminant that is allowed in drinking water. For acutely toxic substances, levels are set at which scientific evidence indicates that no known or anticipated adverse effects on health will occur, plus an adequate margin-of safety. PHGs for carcinogens or other substances which can cause chronic disease shall be based solely on health effects without regard to cost impacts and shall be set at levels which OEHHA has determined do not pose any significant risk to health.1.7 ppb
One in one million (10-6) Cancer RiskThe concentration of a chemical in drinking water corresponding to an excess estimated lifetime cancer risk of 1 in 1,000,000. Source: U.S. Environmental Protection Agency.3 ppb
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.5 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.200 ppb
One in ten thousand (10-4) Cancer RiskThe concentration of a chemical in drinking water corresponding to an excess estimated lifetime cancer risk of 1 in 10,000. Source: U.S. Environmental Protection Agency.300 ppb

Testing Results

Testing DateAverage
Result
Samples taken that dayNumber of Non-DetectsRange of Results
2009-03-010.6 ppb100.6 ppb
2009-03-0110.67 ppb310 to 31.4 ppb
2009-03-010.2 ppb320 to 0.6 ppb
2009-03-017.4 ppb206.1 to 8.7 ppb
2009-03-0116.73 ppb+310 to 49.7 ppb
2009-03-016.3 ppb205.6 to 7 ppb
2009-03-0114.97 ppb310 to 44.3 ppb
2009-03-010.7 ppb100.7 ppb
2009-03-0122.27 ppb+310 to 66.3 ppb
2009-03-0120.37 ppb+320 to 61.1 ppb
2009-02-019.93 ppb310 to 29.2 ppb
2009-02-0116.83 ppb+310 to 49.9 ppb
2009-02-0118.3 ppb+320 to 54.9 ppb
2009-02-0113.32 ppb520 to 51.6 ppb
2009-02-014.37 ppb310 to 7.1 ppb
2009-02-010.4 ppb310 to 0.6 ppb
2009-02-0116.97 ppb+310 to 50.3 ppb
2009-01-0116.77 ppb+310 to 49.7 ppb
2009-01-0113.39 ppb930 to 57.1 ppb
2009-01-0126.2 ppb+200.6 to 51.8 ppb
2009-01-010 ppb110 ppb
2009-01-017.6 ppb206.8 to 8.4 ppb
2009-01-0116.77 ppb+310 to 49.8 ppb
2009-01-0141.23 ppb+410 to 113 ppb
2008-12-0132.22 ppb+510 to 104 ppb
2008-12-010 ppb440 ppb
2008-12-0110.98 ppb520 to 42.2 ppb
2008-12-018.54 ppb850 to 56.6 ppb
2008-12-0117.27 ppb+300.6 to 49.9 ppb
2008-12-0111.5 ppb420 to 45.5 ppb
2008-12-0114.5 ppb310 to 43 ppb
2008-11-0122.33 ppb+310 to 66.4 ppb
2008-11-010 ppb220 ppb
2008-11-0113.5 ppb520 to 65.4 ppb
2008-11-0112.49 ppb1160 to 66.4 ppb
2008-11-019.86 ppb820 to 60.5 ppb
2008-11-010 ppb330 ppb
2008-10-0117.4 ppb+320 to 52.2 ppb
2008-10-0116.75 ppb+410 to 65.6 ppb
2008-10-0110.92 ppb620 to 62.4 ppb
2008-10-0115.8 ppb+1050 to 74.5 ppb
2008-10-016.2 ppb310 to 10.4 ppb
2008-10-0135.65 ppb+200.7 to 70.6 ppb
2008-09-0112.7 ppb420 to 48.1 ppb
2008-09-0113.38 ppb430 to 53.5 ppb
2008-09-010 ppb220 ppb
2008-09-014.8 ppb310 to 7.9 ppb
2008-09-0118 ppb+310 to 52.6 ppb
2008-09-0125.45 ppb+210 to 50.9 ppb
2008-09-0112.3 ppb620 to 58.5 ppb
2008-09-0111.88 ppb540 to 59.4 ppb
2008-09-0112.1 ppb520 to 58.4 ppb
2008-08-0115.17 ppb+320 to 45.5 ppb
2008-08-0113.7 ppb420 to 53.4 ppb
2008-08-0112.1 ppb420 to 46.6 ppb
2008-08-019.58 ppb1280 to 57.8 ppb
2008-08-017.63 ppb830 to 45.2 ppb
2008-07-0119.54 ppb+520 to 50.4 ppb
2008-07-0113.15 ppb420 to 51.2 ppb
2008-07-010.63 ppb430 to 2.5 ppb
2008-07-010 ppb110 ppb
2008-07-0118.33 ppb+1050 to 61.8 ppb
2008-07-013.9 ppb830 to 8.2 ppb
2008-07-0115.73 ppb+420 to 60.4 ppb
2008-06-0120 ppb+320 to 60 ppb
2008-06-0119.23 ppb+320 to 57.7 ppb
2008-06-0131.83 ppb+310 to 94.3 ppb
2008-06-014.65 ppb210 to 9.3 ppb
2008-06-0113.66 ppb750 to 48.1 ppb
2008-06-014.4 ppb310 to 7.1 ppb
2008-06-010.8 ppb100.8 ppb
2008-06-0110.3 ppb430 to 41.2 ppb
2008-05-0115.78 ppb+640 to 47.9 ppb
2008-05-013.65 ppb420 to 7.3 ppb
2008-05-014.53 ppb310 to 7.3 ppb
2008-05-010 ppb220 ppb
2008-05-0117.3 ppb+320 to 51.9 ppb
2008-04-0167.65 ppb+2031.3 to 104 ppb
2008-04-0171.3 ppb+2034.6 to 108 ppb
2008-04-0127.1 ppb+720 to 114 ppb
2008-04-014.02 ppb980 to 36.2 ppb
2008-04-0110.2 ppb205.5 to 14.9 ppb
2008-03-010.18 ppb430 to 0.7 ppb
2008-03-017.7 ppb205.9 to 9.5 ppb
2008-03-0115.17 ppb+320 to 45.5 ppb
2008-03-0110.35 ppb205.7 to 15 ppb
2008-03-0110.88 ppb430 to 43.5 ppb
2008-03-018.9 ppb108.9 ppb
2008-03-0138.2 ppb+1038.2 ppb
2008-02-017.76 ppb950 to 53.9 ppb
2008-02-0115.8 ppb+410 to 40 ppb
2008-02-010 ppb330 ppb
2008-02-013.95 ppb420 to 9.4 ppb
2008-01-017.7 ppb540 to 38.5 ppb
2008-01-0121.76 ppb+710 to 82.9 ppb
2008-01-017.53 ppb305.3 to 11.6 ppb
2008-01-010 ppb660 ppb
2007-12-010 ppb440 ppb
2007-12-0147.17 ppb+301.1 to 110 ppb
2007-12-018.45 ppb410 to 22 ppb
2007-12-014.07 ppb310 to 6.3 ppb
2007-12-017.33 ppb750 to 50.7 ppb
2007-12-0160.25 ppb+2028.2 to 92.3 ppb
2007-11-010.08 ppb650 to 0.5 ppb
2007-11-017 ppb850 to 44.6 ppb
2007-11-0141.2 ppb+1041.2 ppb
2007-11-010.9 ppb100.9 ppb
2007-11-014.83 ppb310 to 9.2 ppb
2007-10-0138.43 ppb+301.1 to 101 ppb
2007-10-0112.08 ppb610 to 47.3 ppb
2007-10-016.03 ppb1180 to 52.7 ppb
2007-10-010 ppb330 ppb
2007-09-010 ppb440 ppb
2007-09-010.25 ppb210 to 0.5 ppb
2007-09-0113.08 ppb520 to 51.2 ppb
2007-09-0119.93 ppb+710 to 90.9 ppb
2007-09-019.72 ppb540 to 48.6 ppb
2007-08-019.32 ppb540 to 46.6 ppb
2007-08-0111.05 ppb830 to 68.8 ppb
2007-08-015.39 ppb1170 to 46.9 ppb
2007-07-0127.85 ppb+210 to 55.7 ppb
2007-07-011.84 ppb750 to 6.5 ppb
2007-07-0110.76 ppb830 to 65.8 ppb
2007-07-016.69 ppb760 to 46.8 ppb
2007-06-010 ppb220 ppb
2007-06-0117.65 ppb+1050 to 63.5 ppb
2007-06-011.53 ppb320 to 4.6 ppb
2007-06-0111.54 ppb540 to 57.7 ppb
2007-06-014.67 ppb310 to 7.5 ppb
2007-05-011.92 ppb530 to 5.9 ppb
2007-05-019.13 ppb850 to 49.1 ppb
2007-05-010 ppb110 ppb
2007-05-0114.71 ppb730 to 55.5 ppb
2007-04-010 ppb660 ppb
2007-04-0119.43 ppb+720 to 84.8 ppb
2007-04-011.23 ppb430 to 4.9 ppb
2007-04-0111.46 ppb540 to 57.3 ppb
2007-03-010 ppb330 ppb
2007-03-0111.9 ppb750 to 77.7 ppb
2007-03-0116.68 ppb+1270 to 94.5 ppb
2007-02-0116.77 ppb+1360 to 95.8 ppb
2007-02-012.1 ppb320 to 6.3 ppb
2007-02-0115.22 ppb+540 to 76.1 ppb
2007-01-015.88 ppb980 to 52.9 ppb
2007-01-0113.35 ppb1150 to 56.7 ppb
2006-12-010.84 ppb760 to 5.9 ppb
2006-12-0118.21 ppb+930 to 56.3 ppb
2006-12-010 ppb550 ppb
2006-11-012.91 ppb16130 to 38.5 ppb
2006-11-0113.49 ppb730 to 50.2 ppb
2006-11-0116.56 ppb+540 to 82.8 ppb
2006-11-019.7 ppb20130 to 77.2 ppb
2006-10-0115.02 ppb+540 to 75.1 ppb
2006-10-0113.94 ppb520 to 50.6 ppb
2006-10-015.61 ppb860 to 38.3 ppb
2006-09-010 ppb550 ppb
2006-09-0129.1 ppb+300.8 to 66.8 ppb
2006-09-019.83 ppb420 to 36.3 ppb
2006-09-012.63 ppb420 to 5.5 ppb
2006-09-0114.24 ppb540 to 71.2 ppb
2006-09-01100 ppb+10100 ppb
2006-08-019.75 ppb750 to 60.5 ppb
2006-08-017.7 ppb420 to 26.4 ppb
2006-08-013.6 ppb420 to 8.7 ppb
2006-07-0115.8 ppb+540 to 79 ppb
2006-07-0126.06 ppb+510 to 75 ppb
2006-07-012.49 ppb740 to 7.4 ppb
2006-06-018.36 ppb1150 to 46 ppb
2006-06-0112 ppb750 to 50 ppb
2006-05-013.63 ppb420 to 7.5 ppb
2006-05-010 ppb110 ppb
2006-05-010 ppb440 ppb
2006-05-0119 ppb+210 to 38 ppb
2006-05-012.53 ppb310 to 4.4 ppb
2006-05-0110 ppb210 to 20 ppb
2006-05-019.5 ppb650 to 57 ppb
2006-04-0114.55 ppb840 to 71 ppb
2006-04-015.58 ppb630 to 18 ppb
2006-04-0115.6 ppb+540 to 78 ppb
2006-03-010 ppb330 ppb
2006-03-011.88 ppb640 to 6.3 ppb
2006-03-016 ppb210 to 12 ppb
2006-03-018.2 ppb520 to 36 ppb
2006-02-0117 ppb+750 to 75 ppb
2006-02-014.06 ppb940 to 18 ppb
2006-01-0115.14 ppb+750 to 68 ppb
2006-01-013.69 ppb840 to 19 ppb