The Power of Information

National Drinking Water Database


California Water Service Co. - Ela Utilities - Los Angeles, CA


Serves 151,042 people

Manganese

Manganese is a naturally occurring element released from mineral deposits as well as industrial use.
 
This Drinking Water System
Test Days Exceeding Health GuidelinesDefinition of what this is
207 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)
207 days
Test DaysNumber of days in which this chemical has reported results in the data we received from the State
309 days
Tests ConductedNumber of individual tests done for this contaminant
571 tests

Testing Summary

ContaminantAverage/
Maximum
Result
Health Limit
Exceeded
Legal Limit
Exceeded

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
ManganeseManganese is a naturally occurring element released from mineral deposits as well as industrial use.134.75 ppb
471.1 ppb
Yes
50 ppb
Yes
50 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 Manganese

Health Based Limits for Manganese

StandardDescriptionLevel
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.50 ppb
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. 50 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.300 ppb
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.300 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.1000 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
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.1600 ppb

Testing Results

Testing DateAverage
Result
Samples taken that dayNumber of Non-DetectsRange of Results
2009-03-300 ppb220 ppb
2009-03-230 ppb220 ppb
2009-03-160 ppb220 ppb
2009-03-090 ppb220 ppb
2009-03-02101.67 ppb640 to 470 ppb
2009-02-230 ppb220 ppb
2009-02-170 ppb220 ppb
2009-02-090 ppb220 ppb
2009-02-02120 ppb420 to 330 ppb
2009-01-260 ppb220 ppb
2009-01-200 ppb220 ppb
2009-01-120 ppb220 ppb
2009-01-05174.25 ppb4057 to 360 ppb
2008-12-290 ppb110 ppb
2008-12-220 ppb330 ppb
2008-12-150 ppb110 ppb
2008-12-080 ppb110 ppb
2008-12-01142.5 ppb430 to 570 ppb
2008-11-240 ppb110 ppb
2008-11-170 ppb110 ppb
2008-11-13160 ppb10160 ppb
2008-11-120 ppb110 ppb
2008-11-05150 ppb10150 ppb
2008-11-03160 ppb210 to 320 ppb
2008-10-200 ppb110 ppb
2008-10-06180.13 ppb410 to 535.1 ppb
2008-09-290 ppb110 ppb
2008-09-220 ppb110 ppb
2008-09-152.9 ppb102.9 ppb
2008-09-080.5 ppb100.5 ppb
2008-09-02133.68 ppb420 to 527.9 ppb
2008-08-250 ppb110 ppb
2008-08-180 ppb110 ppb
2008-08-111.3 ppb101.3 ppb
2008-08-05130.2 ppb10130.2 ppb
2008-08-04262.25 ppb210 to 524.5 ppb
2008-07-280 ppb110 ppb
2008-07-210 ppb110 ppb
2008-07-140 ppb110 ppb
2008-07-0921 ppb1021 ppb
2008-07-0841.65 ppb1041.65 ppb
2008-07-07263.05 ppb202 to 524.1 ppb
2008-07-0176.65 ppb2051.5 to 101.8 ppb
2008-06-300 ppb110 ppb
2008-06-232.3 ppb102.3 ppb
2008-06-160 ppb110 ppb
2008-06-090 ppb110 ppb
2008-06-02129.78 ppb420 to 511.3 ppb
2008-05-270.9 ppb100.9 ppb
2008-05-190 ppb110 ppb
2008-05-120.3 ppb100.3 ppb
2008-05-06152.5 ppb10152.5 ppb
2008-05-05259.4 ppb201.2 to 517.6 ppb
2008-04-280 ppb110 ppb
2008-04-210 ppb110 ppb
2008-04-140.4 ppb100.4 ppb
2008-04-07262.35 ppb201.6 to 523.1 ppb
2008-04-0176.65 ppb2049.6 to 103.7 ppb
2008-03-310 ppb110 ppb
2008-03-242 ppb102 ppb
2008-03-170 ppb110 ppb
2008-03-110 ppb110 ppb
2008-03-100 ppb110 ppb
2008-03-042.4 ppb210 to 4.8 ppb
2008-03-03265.55 ppb210 to 531.1 ppb
2008-02-250 ppb110 ppb
2008-02-190 ppb110 ppb
2008-02-110 ppb110 ppb
2008-02-04164 ppb301.8 to 336.7 ppb
2008-01-282.5 ppb102.5 ppb
2008-01-222.5 ppb102.5 ppb
2008-01-140 ppb110 ppb
2008-01-07263.7 ppb210 to 527.4 ppb
2008-01-0251.13 ppb300.5 to 102.9 ppb
2007-12-260 ppb110 ppb
2007-12-172.2 ppb102.2 ppb
2007-12-100 ppb110 ppb
2007-12-043.05 ppb210 to 6.1 ppb
2007-12-03263 ppb201 to 525 ppb
2007-11-260 ppb110 ppb
2007-11-190 ppb110 ppb
2007-11-120 ppb110 ppb
2007-11-06150 ppb10150 ppb
2007-11-05254.2 ppb210 to 508.4 ppb
2007-10-290 ppb110 ppb
2007-10-220 ppb110 ppb
2007-10-15237.15 ppb210 to 474.3 ppb
2007-10-090 ppb110 ppb
2007-10-03100 ppb10100 ppb
2007-10-0131.65 ppb202.8 to 60.5 ppb
2007-09-242.3 ppb102.3 ppb
2007-09-174.1 ppb104.1 ppb
2007-09-115.8 ppb105.8 ppb
2007-09-06154.6 ppb310 to 441.3 ppb
2007-09-040 ppb110 ppb
2007-08-270 ppb110 ppb
2007-08-200 ppb110 ppb
2007-08-130 ppb110 ppb
2007-08-08131.9 ppb10131.9 ppb
2007-08-0791.1 ppb201.5 to 180.7 ppb
2007-08-020 ppb110 ppb
2007-07-30139.9 ppb10139.9 ppb
2007-07-274.2 ppb104.2 ppb
2007-07-1830.15 ppb210 to 60.3 ppb
2007-07-1047 ppb1047 ppb
2007-07-0969.7 ppb2043.2 to 96.2 ppb
2007-06-072.75 ppb210 to 5.5 ppb
2007-05-292.9 ppb102.9 ppb
2007-05-211.3 ppb101.3 ppb
2007-05-140 ppb110 ppb
2007-05-08471.1 ppb10471.1 ppb
2007-05-07172.15 ppb202.9 to 341.4 ppb
2007-04-304.3 ppb104.3 ppb
2007-04-2552.17 ppb600.8 to 147.3 ppb
2007-04-231.3 ppb101.3 ppb
2007-04-1745.97 ppb730 to 147 ppb
2007-04-169.4 ppb109.4 ppb
2007-04-1251.77 ppb603.6 to 148.3 ppb
2007-04-100.5 ppb100.5 ppb
2007-04-04101.78 ppb1000.1 to 555.7 ppb
2007-03-2611.7 ppb1011.7 ppb
2007-03-1912 ppb1012 ppb
2007-03-1211.5 ppb1011.5 ppb
2007-03-06179.63 ppb320 to 538.9 ppb
2007-02-263.7 ppb103.7 ppb
2007-02-205 ppb105 ppb
2007-02-1273.15 ppb210 to 146.3 ppb
2007-02-05264 ppb200.1 to 527.9 ppb
2007-01-291.2 ppb101.2 ppb
2007-01-220 ppb110 ppb
2007-01-170 ppb110 ppb
2007-01-0978.5 ppb2048.9 to 108.1 ppb
2007-01-08250.3 ppb201.9 to 498.7 ppb
2007-01-020 ppb110 ppb
2006-12-26249.7 ppb202 to 497.4 ppb
2006-12-18248.1 ppb202.8 to 493.4 ppb
2006-12-12243.2 ppb210 to 486.4 ppb
2006-12-04184.7 ppb203 to 366.4 ppb
2006-11-2797.55 ppb205.5 to 189.6 ppb
2006-11-2099.1 ppb201.9 to 196.3 ppb
2006-11-14131.45 ppb10131.45 ppb
2006-11-13175.25 ppb210 to 350.5 ppb
2006-11-08135.6 ppb10135.6 ppb
2006-11-0665.75 ppb210 to 131.5 ppb
2006-10-31145.05 ppb208.7 to 281.4 ppb
2006-10-23137.4 ppb203 to 271.8 ppb
2006-10-16106.15 ppb204 to 208.3 ppb
2006-10-13211.95 ppb203.2 to 420.7 ppb
2006-10-02117.03 ppb401.9 to 312.4 ppb
2006-09-25104.6 ppb210 to 209.2 ppb
2006-09-18159 ppb200.5 to 317.5 ppb
2006-09-11162.85 ppb210 to 325.7 ppb
2006-09-05201.65 ppb210 to 403.3 ppb
2006-08-28165.8 ppb210 to 331.6 ppb
2006-08-21197.95 ppb205.6 to 390.3 ppb
2006-08-14159.45 ppb210 to 318.9 ppb
2006-08-08191.2 ppb210 to 382.4 ppb
2006-07-31207.5 ppb210 to 415 ppb
2006-07-270 ppb110 ppb
2006-07-24181.9 ppb210 to 363.8 ppb
2006-07-1874.6 ppb2047.4 to 101.8 ppb
2006-07-17104.5 ppb210 to 209 ppb
2006-07-10181.4 ppb210 to 362.8 ppb
2006-07-05136.6 ppb210 to 273.2 ppb
2006-06-300 ppb110 ppb
2006-06-26108.6 ppb210 to 217.2 ppb
2006-06-1998.45 ppb210 to 196.9 ppb
2006-06-1291.1 ppb210 to 182.2 ppb
2006-06-06230.7 ppb210 to 461.4 ppb
2006-05-30228.4 ppb2012 to 444.8 ppb
2006-05-22128.4 ppb320 to 385.2 ppb
2006-05-15169.8 ppb210 to 339.6 ppb
2006-05-08250.55 ppb210 to 501.1 ppb
2006-05-02149 ppb10149 ppb
2006-05-01258.3 ppb2014.2 to 502.4 ppb
2006-04-24217.15 ppb210 to 434.3 ppb
2006-04-18250.9 ppb210 to 501.8 ppb
2006-04-10210.2 ppb210 to 420.4 ppb
2006-04-0452.5 ppb2027 to 78 ppb
2006-04-03223.6 ppb210 to 447.2 ppb
2006-03-27228.8 ppb210 to 457.6 ppb
2006-03-20107 ppb210 to 214 ppb
2006-03-13242.85 ppb210 to 485.7 ppb
2006-03-07258.15 ppb201.9 to 514.4 ppb
2006-02-27204.35 ppb210 to 408.7 ppb
2006-02-21204.5 ppb210 to 409 ppb
2006-02-13220.6 ppb210 to 441.2 ppb
2006-02-09149.7 ppb10149.7 ppb
2006-02-084.1 ppb104.1 ppb
2006-02-06204.55 ppb210 to 409.1 ppb
2006-01-30202.8 ppb210 to 405.6 ppb
2006-01-23205 ppb210 to 410 ppb
2006-01-17444.55 ppb20404.9 to 484.2 ppb
2006-01-1171 ppb1071 ppb
2006-01-09147.63 ppb410 to 444.7 ppb
2006-01-03215 ppb210 to 430 ppb
2005-12-27216.15 ppb210 to 432.3 ppb
2005-12-19190 ppb210 to 380 ppb
2005-12-12227.1 ppb210 to 454.2 ppb
2005-12-05205 ppb210 to 410 ppb
2005-11-28149.65 ppb202.2 to 297.1 ppb
2005-11-21234 ppb201.2 to 466.8 ppb
2005-11-14206.5 ppb200.4 to 412.6 ppb
2005-11-08169.8 ppb10169.8 ppb
2005-11-07172.65 ppb201.6 to 343.7 ppb
2005-10-31212.05 ppb210 to 424.1 ppb
2005-10-24200 ppb210 to 400 ppb
2005-10-17199.5 ppb210 to 399 ppb
2005-10-11192.85 ppb210 to 385.7 ppb
2005-10-03128.08 ppb410 to 380.8 ppb
2005-09-26158.55 ppb210 to 317.1 ppb
2005-09-19159.5 ppb210 to 319 ppb
2005-09-12120.3 ppb210 to 240.6 ppb
2005-09-06121.3 ppb202 to 240.6 ppb
2005-08-2990.8 ppb203.2 to 178.4 ppb
2005-08-2277.65 ppb210 to 155.3 ppb
2005-08-16103 ppb207.9 to 198.1 ppb
2005-08-11178.4 ppb10178.4 ppb
2005-08-0950.55 ppb210 to 101.1 ppb
2005-08-0236.8 ppb210 to 73.6 ppb
2005-07-2715.6 ppb210 to 31.2 ppb
2005-07-1345.8 ppb209 to 82.6 ppb
2005-07-0563.7 ppb2038.9 to 88.5 ppb
2005-06-20255.3 ppb205.9 to 504.7 ppb
2005-06-13260.4 ppb208.4 to 512.4 ppb
2005-06-06255.25 ppb210 to 510.5 ppb
2005-05-31263.45 ppb210 to 526.9 ppb
2005-05-23260 ppb210 to 520 ppb
2005-05-16268.5 ppb208.2 to 528.8 ppb
2005-05-10144.3 ppb10144.3 ppb
2005-05-09257.2 ppb210 to 514.4 ppb
2005-05-03195.8 ppb208.9 to 382.7 ppb
2005-04-25267.65 ppb205.1 to 530.2 ppb
2005-04-18250.75 ppb210 to 501.5 ppb
2005-04-11267.6 ppb204.5 to 530.7 ppb
2005-04-04170.18 ppb403.2 to 534.6 ppb
2005-03-28267.1 ppb206.4 to 527.8 ppb
2005-03-21256.05 ppb210 to 512.1 ppb
2005-03-14250.9 ppb200.8 to 501 ppb
2005-03-09258.9 ppb205.3 to 512.5 ppb
2005-03-07251.55 ppb200.6 to 502.5 ppb
2005-02-28468.75 ppb20453.3 to 484.2 ppb
2005-02-22251.7 ppb2033.8 to 469.6 ppb
2005-02-14284.95 ppb2015.7 to 554.2 ppb
2005-02-07224.67 ppb307.4 to 546.5 ppb
2005-02-01275.35 ppb201.6 to 549.1 ppb
2005-01-24244.2 ppb207.7 to 480.7 ppb
2005-01-18246.35 ppb209.1 to 483.6 ppb
2005-01-1218.7 ppb1018.7 ppb
2005-01-10195.17 ppb309.8 to 483.5 ppb
2005-01-04244.45 ppb2010.1 to 478.8 ppb
2004-12-27247.5 ppb210 to 495 ppb
2004-12-20250.75 ppb210 to 501.5 ppb
2004-12-14140 ppb10140 ppb
2004-12-13275 ppb210 to 550 ppb
2004-12-06249.35 ppb200.6 to 498.1 ppb
2004-11-29252.7 ppb210 to 505.4 ppb
2004-11-22265 ppb210 to 530 ppb
2004-11-15210 ppb210 to 420 ppb
2004-11-08245 ppb210 to 490 ppb
2004-11-03103.33 ppb3060 to 150 ppb
2004-11-02248.85 ppb210 to 497.7 ppb
2004-10-25252.45 ppb210 to 504.9 ppb
2004-10-18254.45 ppb210 to 508.9 ppb
2004-10-12252.8 ppb210 to 505.6 ppb
2004-10-05251.3 ppb200.5 to 502.1 ppb
2004-09-27260.95 ppb201.5 to 520.4 ppb
2004-09-21160 ppb10160 ppb
2004-09-20270 ppb210 to 540 ppb
2004-09-13280 ppb210 to 560 ppb
2004-09-07275 ppb210 to 550 ppb
2004-08-30275 ppb210 to 550 ppb
2004-08-25260 ppb210 to 520 ppb
2004-08-16230 ppb210 to 460 ppb
2004-08-110 ppb110 ppb
2004-08-09260 ppb210 to 520 ppb
2004-08-02257.1 ppb203.5 to 510.7 ppb
2004-07-26257.55 ppb201.1 to 514 ppb
2004-07-2077.99 ppb2060.01 to 95.96 ppb
2004-07-19263.35 ppb203.5 to 523.2 ppb
2004-07-12253.8 ppb207.8 to 499.8 ppb
2004-07-06244.5 ppb201.6 to 487.4 ppb
2004-06-28252.7 ppb202.4 to 503 ppb
2004-06-21251 ppb203.8 to 498.2 ppb
2004-06-14250.4 ppb203.6 to 497.2 ppb
2004-06-07263.4 ppb210 to 526.8 ppb
2004-06-01252.05 ppb210 to 504.1 ppb
2004-05-250 ppb110 ppb
2004-05-24255 ppb210 to 510 ppb
2004-05-17260 ppb210 to 520 ppb
2004-05-10260 ppb210 to 520 ppb
2004-05-03260 ppb210 to 520 ppb
2004-04-26255 ppb210 to 510 ppb
2004-04-2227.6 ppb1027.6 ppb
2004-04-19250 ppb210 to 500 ppb
2004-04-12260 ppb210 to 520 ppb
2004-04-05255 ppb210 to 510 ppb
2004-03-22255 ppb210 to 510 ppb
2004-03-15230 ppb210 to 460 ppb
2004-03-08230 ppb210 to 460 ppb
2004-03-01255 ppb210 to 510 ppb
2004-02-23210 ppb210 to 420 ppb
2004-02-17225 ppb210 to 450 ppb
2004-02-09200 ppb210 to 400 ppb
2004-02-02200 ppb210 to 400 ppb
2004-01-26210 ppb210 to 420 ppb
2004-01-20220 ppb210 to 440 ppb
2004-01-12245 ppb210 to 490 ppb
2004-01-05255 ppb2020 to 490 ppb