The Power of Information

National Drinking Water Database

Long Island American Water Corp Utilities - Great Neck, NY

Serves 230,300 people


Aluminum is a metal released from metal refineries and mining operations.
This Drinking Water System
Test Days Exceeding Health GuidelinesDefinition of what this is
3 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)
3 days
Test DaysNumber of days in which this chemical has reported results in the data we received from the State
31 days
Tests ConductedNumber of individual tests done for this contaminant
74 tests

Testing Summary

Health Limit
Legal Limit

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
AluminumAluminum is a metal released from metal refineries and mining operations.47.42 ppb
410 ppb
200 ppb
200 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 Aluminum

Health Based Limits for Aluminum

National Secondary Drinking Water RegulationsA National Secondary Drinking Water Regulation is a non-enforceable guideline regarding contaminants that may cause cosmetic effects (such as taste, odor, or color). Some states choose to adopt them as enforceable standards. Source: U.S. Environmental Protection Agency. 200 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.600 ppb

Testing Results

Testing DateAverage
Samples taken that dayNumber of Non-DetectsRange of Results
2008-12-010 ppb110 ppb
2008-12-0130 ppb2010 to 50 ppb
2008-10-0140 ppb2020 to 60 ppb
2008-09-0120 ppb1020 ppb
2008-09-010 ppb110 ppb
2008-08-0155 ppb2030 to 80 ppb
2008-07-0110 ppb420 to 20 ppb
2008-07-010 ppb330 ppb
2008-06-0150 ppb1050 ppb
2008-06-01410 ppb210 to 820 ppb
2008-05-0110 ppb1010 ppb
2008-04-010 ppb330 ppb
2008-04-010 ppb440 ppb
2008-03-016.67 ppb320 to 20 ppb
2008-03-0146.67 ppb310 to 110 ppb
2007-12-0160 ppb2030 to 90 ppb
2007-12-010 ppb110 ppb
2007-10-0115 ppb210 to 30 ppb
2007-10-010 ppb220 ppb
2007-10-0180 ppb1080 ppb
2007-09-0113.33 ppb310 to 30 ppb
2007-08-01250 ppb4020 to 860 ppb
2007-08-01246.67 ppb310 to 640 ppb
2007-08-013.33 ppb320 to 10 ppb
2007-07-010 ppb220 ppb
2007-07-012.5 ppb430 to 10 ppb
2007-06-0110 ppb210 to 20 ppb
2007-06-0125 ppb4020 to 30 ppb
2007-05-013.33 ppb320 to 10 ppb
2007-03-012.5 ppb430 to 10 ppb
2007-01-0180 ppb1080 ppb