The Power of Information

National Drinking Water Database


Lincoln Avenue Water Co. Utilities - Los Angeles, CA


Serves 16,000 people

Perchlorate

Perchlorate is a synthetic oxygen additive in solid fuel propellant for rockets, missiles, and fireworks, and is primarily used by the military and the space industry; it may occur naturally in certain imported agricultural fertilizers.
 
This Drinking Water System
Test Days Exceeding Health GuidelinesDefinition of what this is
232 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
252 days
Tests ConductedNumber of individual tests done for this contaminant
1,124 tests

Testing Summary

ContaminantAverage/
Maximum
Result
Health Limit
Exceeded
Legal Limit
Exceeded

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
PerchloratePerchlorate is a synthetic oxygen additive in solid fuel propellant for rockets, missiles, and fireworks, and is primarily used by the military and the space industry; it may occur naturally in certain imported agricultural fertilizers.8.96 ppb
18.4 ppb
Yes
5 ppb
Legal at any levelThis is the Federal Limit. State Limits may be lower.
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 Perchlorate

Health Based Limits for Perchlorate

StandardDescriptionLevel
Health-Based Screening LevelA benchmark concentration of contaminants in water that may be of potential concern for human health, if exceeded. For noncarcinogens, the HBSL represents the contaminant concentration in drinking water that is not expected to cause any adverse effects over a lifetime of exposure. For carcinogens, the HBSL range represents the contaminant concentration in drinking water that corresponds to an excess estimated lifetime cancer risk of 1 chance in 1 million to 1 chance in 10 thousand. Source: U.S. Geological Survey.5 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.6 ppb

Testing Results

Testing DateAverage
Result
Samples taken that dayNumber of Non-DetectsRange of Results
2009-03-318.75 ppb420 to 18 ppb
2009-03-248.75 ppb420 to 18 ppb
2009-03-178.5 ppb420 to 17 ppb
2009-03-108.4 ppb520 to 15 ppb
2009-03-036 ppb530 to 15 ppb
2009-02-2515 ppb1015 ppb
2009-02-246.5 ppb420 to 13 ppb
2009-02-189 ppb520 to 17 ppb
2009-02-108.6 ppb520 to 17 ppb
2009-02-065 ppb320 to 15 ppb
2009-02-035.33 ppb640 to 18 ppb
2009-01-2914 ppb1014 ppb
2009-01-279.25 ppb420 to 19 ppb
2009-01-209.4 ppb520 to 18 ppb
2009-01-139.8 ppb520 to 19 ppb
2009-01-068.33 ppb630 to 19 ppb
2008-12-309.8 ppb520 to 19 ppb
2008-12-238.4 ppb520 to 16 ppb
2008-12-178.2 ppb520 to 16 ppb
2008-12-028.33 ppb630 to 19 ppb
2008-11-2510.6 ppb520 to 20 ppb
2008-11-189.8 ppb520 to 19 ppb
2008-11-1313 ppb410 to 20 ppb
2008-11-048.88 ppb620 to 18 ppb
2008-10-287.98 ppb520 to 17 ppb
2008-10-218.4 ppb520 to 16 ppb
2008-10-148.4 ppb520 to 16 ppb
2008-10-077 ppb630 to 16 ppb
2008-09-308.8 ppb520 to 17 ppb
2008-09-239 ppb420 to 18 ppb
2008-09-1610.6 ppb520 to 20 ppb
2008-09-098.2 ppb520 to 15 ppb
2008-09-028.17 ppb630 to 17 ppb
2008-08-269.8 ppb520 to 19 ppb
2008-08-198.8 ppb520 to 17 ppb
2008-08-129 ppb520 to 17 ppb
2008-08-057.5 ppb630 to 17 ppb
2008-07-298.4 ppb520 to 16 ppb
2008-06-249.6 ppb520 to 17 ppb
2008-06-179.2 ppb520 to 16 ppb
2008-06-108.6 ppb520 to 15 ppb
2008-06-036.48 ppb630 to 17 ppb
2008-05-278.6 ppb520 to 16 ppb
2008-05-200 ppb220 ppb
2008-05-128.6 ppb520 to 16 ppb
2008-05-068.6 ppb520 to 15 ppb
2008-04-299.42 ppb510 to 15 ppb
2008-04-2410 ppb205 to 15 ppb
2008-04-229.32 ppb510 to 15 ppb
2008-04-1510.58 ppb510 to 17 ppb
2008-04-089 ppb520 to 16 ppb
2008-04-016.6 ppb530 to 17 ppb
2008-03-258.6 ppb520 to 16 ppb
2008-03-1811.2 ppb520 to 20 ppb
2008-03-118.4 ppb520 to 16 ppb
2008-03-047 ppb630 to 15 ppb
2008-02-268 ppb420 to 16 ppb
2008-02-198.75 ppb420 to 18 ppb
2008-02-128.5 ppb420 to 17 ppb
2008-02-057.17 ppb630 to 17 ppb
2008-01-3118 ppb1018 ppb
2008-01-296.25 ppb420 to 14 ppb
2008-01-229.2 ppb520 to 19 ppb
2008-01-159.4 ppb520 to 20 ppb
2008-01-089 ppb520 to 19 ppb
2008-01-027.83 ppb630 to 20 ppb
2007-12-268.4 ppb520 to 18 ppb
2007-12-188.5 ppb420 to 19 ppb
2007-12-119 ppb520 to 19 ppb
2007-12-047.8 ppb530 to 20 ppb
2007-11-278.6 ppb520 to 18 ppb
2007-11-209.6 ppb520 to 20 ppb
2007-11-139.8 ppb520 to 21 ppb
2007-11-068.33 ppb630 to 20 ppb
2007-10-199.27 ppb310 to 20 ppb
2007-10-1612.96 ppb510 to 24 ppb
2007-10-118.7 ppb310 to 20 ppb
2007-10-0913.2 ppb510 to 25 ppb
2007-10-085 ppb320 to 15 ppb
2007-10-027.08 ppb620 to 16 ppb
2007-09-259.6 ppb520 to 19 ppb
2007-09-188.6 ppb520 to 18 ppb
2007-09-118.4 ppb520 to 18 ppb
2007-09-047.5 ppb630 to 19 ppb
2007-08-289.2 ppb520 to 20 ppb
2007-08-219.2 ppb520 to 19 ppb
2007-08-1410 ppb420 to 20 ppb
2007-08-077.8 ppb530 to 20 ppb
2007-07-3110 ppb420 to 20 ppb
2007-07-2410.25 ppb420 to 21 ppb
2007-07-1710.75 ppb420 to 22 ppb
2007-07-1010 ppb420 to 20 ppb
2007-07-037.33 ppb630 to 19 ppb
2007-06-268.56 ppb520 to 18 ppb
2007-06-198.96 ppb520 to 20 ppb
2007-06-128.8 ppb520 to 19 ppb
2007-06-055.2 ppb530 to 15 ppb
2007-05-299.4 ppb520 to 20 ppb
2007-05-228.6 ppb520 to 18 ppb
2007-05-187.6 ppb520 to 15 ppb
2007-05-019.84 ppb510 to 20 ppb
2007-04-275.73 ppb310 to 13 ppb
2007-04-249.24 ppb510 to 19 ppb
2007-04-177.32 ppb520 to 16 ppb
2007-04-109.8 ppb520 to 21 ppb
2007-04-037.05 ppb630 to 19 ppb
2007-03-279.6 ppb520 to 21 ppb
2007-03-208.6 ppb520 to 20 ppb
2007-03-139 ppb520 to 20 ppb
2007-03-067.45 ppb630 to 20 ppb
2007-02-279.4 ppb520 to 21 ppb
2007-02-208.92 ppb520 to 20 ppb
2007-02-1310 ppb520 to 23 ppb
2007-02-067.82 ppb630 to 21 ppb
2007-01-309.26 ppb520 to 22 ppb
2007-01-239.38 ppb520 to 21 ppb
2007-01-169.16 ppb520 to 21 ppb
2007-01-099.58 ppb520 to 22 ppb
2007-01-027.38 ppb630 to 20 ppb
2006-12-269.1 ppb520 to 21 ppb
2006-12-1911.85 ppb410 to 22 ppb
2006-12-156.57 ppb310 to 15 ppb
2006-12-1215.75 ppb209.5 to 22 ppb
2006-11-289.48 ppb520 to 22 ppb
2006-11-210 ppb220 ppb
2006-11-149.34 ppb520 to 23 ppb
2006-11-077.9 ppb630 to 23 ppb
2006-10-319.82 ppb520 to 24 ppb
2006-10-248.4 ppb520 to 20 ppb
2006-10-1710.78 ppb520 to 27 ppb
2006-10-108.76 ppb520 to 21 ppb
2006-10-037.32 ppb630 to 22 ppb
2006-09-268.94 ppb520 to 22 ppb
2006-09-198.86 ppb520 to 21 ppb
2006-09-138.1 ppb108.1 ppb
2006-09-1211 ppb420 to 22 ppb
2006-09-058 ppb530 to 20 ppb
2006-08-298.5 ppb520 to 21 ppb
2006-08-228.32 ppb520 to 20 ppb
2006-08-158.68 ppb520 to 22 ppb
2006-08-088.52 ppb520 to 21 ppb
2006-08-016.67 ppb630 to 20 ppb
2006-07-258.02 ppb520 to 21 ppb
2006-07-186.6 ppb630 to 19 ppb
2006-07-1110.83 ppb410 to 22 ppb
2006-07-076.3 ppb310 to 14 ppb
2006-07-057.88 ppb620 to 21 ppb
2006-06-306.03 ppb310 to 14 ppb
2006-06-279.86 ppb510 to 23 ppb
2006-06-226.5 ppb310 to 15 ppb
2006-06-208.36 ppb520 to 21 ppb
2006-06-1311.56 ppb510 to 24 ppb
2006-06-067 ppb630 to 21 ppb
2006-05-308.44 ppb520 to 21 ppb
2006-05-2310 ppb420 to 20 ppb
2006-05-187.1 ppb107.1 ppb
2006-05-169.5 ppb420 to 19 ppb
2006-05-0912.2 ppb207.4 to 17 ppb
2006-05-027.2 ppb530 to 18 ppb
2006-04-076.33 ppb630 to 18 ppb
2006-03-2813 ppb420 to 26 ppb
2006-03-218.3 ppb520 to 21 ppb
2006-03-143.6 ppb530 to 9.3 ppb
2006-01-194.5 ppb104.5 ppb
2006-01-179.4 ppb510 to 23 ppb
2006-01-124.1 ppb104.1 ppb
2006-01-1010.74 ppb510 to 27 ppb
2006-01-054.2 ppb104.2 ppb
2006-01-037.93 ppb620 to 24 ppb
2005-12-304 ppb104 ppb
2005-12-2717.8 ppb206.6 to 29 ppb
2005-12-208.92 ppb520 to 24 ppb
2005-12-1310.16 ppb520 to 28 ppb
2005-12-067.83 ppb630 to 25 ppb
2005-11-299.72 ppb520 to 27 ppb
2005-11-229.3 ppb520 to 24 ppb
2005-11-178.4 ppb520 to 24 ppb
2005-11-088.86 ppb520 to 25 ppb
2005-11-018.17 ppb630 to 27 ppb
2005-10-259.84 ppb520 to 27 ppb
2005-10-1814 ppb520 to 38 ppb
2005-10-1110.2 ppb520 to 28 ppb
2005-10-049.77 ppb630 to 33 ppb
2005-09-279.54 ppb520 to 26 ppb
2005-09-209.3 ppb520 to 25 ppb
2005-09-136.95 ppb630 to 23 ppb
2005-08-110 ppb110 ppb
2005-08-0918.4 ppb510 to 47 ppb
2005-08-080 ppb110 ppb
2005-08-053.5 ppb430 to 14 ppb
2005-08-028.38 ppb620 to 25 ppb
2005-07-2613.5 ppb420 to 27 ppb
2005-07-1912.75 ppb420 to 26 ppb
2005-07-1210.22 ppb520 to 29 ppb
2005-07-057.65 ppb630 to 26 ppb
2005-06-2812.5 ppb420 to 25 ppb
2005-06-2113.5 ppb420 to 27 ppb
2005-06-1412.5 ppb420 to 27 ppb
2005-06-079.4 ppb530 to 24 ppb
2005-05-3112.5 ppb420 to 25 ppb
2005-05-2412 ppb420 to 24 ppb
2005-05-1713.5 ppb420 to 27 ppb
2005-05-1013.6 ppb530 to 46 ppb
2005-04-285.93 ppb310 to 13 ppb
2005-04-269.62 ppb510 to 24 ppb
2005-04-217.17 ppb310 to 16 ppb
2005-04-1910.12 ppb510 to 25 ppb
2005-04-1212.78 ppb410 to 24 ppb
2005-04-057.32 ppb630 to 25 ppb
2005-03-2911.5 ppb420 to 23 ppb
2005-03-2211 ppb420 to 22 ppb
2005-03-157.72 ppb520 to 21 ppb
2005-03-0814.75 ppb420 to 30 ppb
2005-03-018.6 ppb530 to 22 ppb
2005-02-2215.75 ppb420 to 32 ppb
2005-02-1511.25 ppb420 to 23 ppb
2005-02-0812.25 ppb420 to 25 ppb
2005-01-2510.34 ppb520 to 30 ppb
2005-01-189.84 ppb520 to 28 ppb
2005-01-1110.96 ppb520 to 31 ppb
2005-01-0411.8 ppb530 to 30 ppb
2004-12-2814.5 ppb420 to 29 ppb
2004-12-219.7 ppb520 to 28 ppb
2004-12-1410.8 ppb520 to 31 ppb
2004-12-078.1 ppb630 to 28 ppb
2004-11-3011.86 ppb520 to 35 ppb
2004-11-2311 ppb520 to 32 ppb
2004-11-1615.8 ppb520 to 35 ppb
2004-11-0916.5 ppb420 to 33 ppb
2004-11-0212.2 ppb530 to 31 ppb
2004-10-2615.75 ppb420 to 32 ppb
2004-10-1910.67 ppb320 to 32 ppb
2004-10-125.67 ppb320 to 17 ppb
2004-10-058.25 ppb630 to 28 ppb
2004-09-285.33 ppb320 to 16 ppb
2004-09-215 ppb320 to 15 ppb
2004-09-144.33 ppb320 to 13 ppb
2004-09-074.13 ppb640 to 17 ppb
2004-08-313.67 ppb320 to 11 ppb
2004-08-243.67 ppb320 to 11 ppb
2004-08-103.33 ppb320 to 10 ppb
2004-08-034.26 ppb520 to 10 ppb
2004-07-277.7 ppb204.4 to 11 ppb
2004-07-156.65 ppb204.4 to 8.9 ppb
2004-07-066.5 ppb204.6 to 8.4 ppb
2004-06-296.95 ppb205 to 8.9 ppb
2004-06-225 ppb105 ppb
2004-06-159 ppb207 to 11 ppb
2004-06-088.9 ppb207.8 to 10 ppb
2004-06-019.45 ppb208.9 to 10 ppb
2004-05-2513.5 ppb2013 to 14 ppb
2004-05-1812 ppb2010 to 14 ppb