The Power of Information

National Drinking Water Database


Baltimore City Department of Public Works Utilities - Baltimore, MD


Serves 1,600,000 people

Trichloroacetic acid

Trichloroacetic acid is a disinfection byproduct regulated by EPA as one of five haloacetic acids that are formed when chlorine, chloramines or other disinfectants react with organic and inorganic matter in water.
 
This Drinking Water System
Test Days Exceeding Health GuidelinesDefinition of what this is
58 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
105 days
Tests ConductedNumber of individual tests done for this contaminant
443 tests

Testing Summary

ContaminantAverage/
Maximum
Result
Health Limit
Exceeded
Legal Limit
Exceeded

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
Trichloroacetic acidTrichloroacetic acid is a disinfection byproduct regulated by EPA as one of five haloacetic acids that are formed when chlorine, chloramines or other disinfectants react with organic and inorganic matter in water.22.19 ppb
59.75 ppb
Yes
20 ppb
No
60 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 Trichloroacetic acid

Health Based Limits for Trichloroacetic acid

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.20 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.20 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.60 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.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.3000 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.3000 ppb

Testing Results

Testing DateAverage
Result
Samples taken that dayNumber of Non-DetectsRange of Results
2007-11-1917.83 ppb607 to 22 ppb
2007-11-1821 ppb1021 ppb
2007-11-1616.67 ppb605 to 22 ppb
2007-11-1419.67 ppb6018 to 22 ppb
2007-09-1915.5 ppb2014 to 17 ppb
2007-09-1820.5 ppb2017 to 24 ppb
2007-09-1717.33 ppb3015 to 20 ppb
2007-09-1417.64 ppb1106 to 25 ppb
2007-07-1922.17 ppb609 to 30 ppb
2007-07-1819 ppb2019 ppb
2007-07-1717 ppb2015 to 19 ppb
2007-07-1625 ppb6019 to 35 ppb
2007-05-1627.33 ppb3026 to 29 ppb
2007-05-1513.5 ppb203 to 24 ppb
2007-05-1426.17 ppb6021 to 32 ppb
2007-05-1129.83 ppb6023 to 42 ppb
2007-03-2124 ppb3019 to 30 ppb
2007-03-2026 ppb2021 to 31 ppb
2007-03-1921.67 ppb607 to 32 ppb
2007-03-1620.2 ppb5011 to 27 ppb
2007-02-0225 ppb1025 ppb
2007-01-2419 ppb2018 to 20 ppb
2007-01-2318.5 ppb2018 to 19 ppb
2007-01-2216.83 ppb6014 to 21 ppb
2007-01-1921.2 ppb5019 to 26 ppb
2006-11-2223 ppb1023 ppb
2006-11-2120.67 ppb3019 to 22 ppb
2006-11-2022.67 ppb610 to 32 ppb
2006-11-1724.5 ppb6022 to 28 ppb
2006-09-2025.67 ppb3022 to 28 ppb
2006-09-1928.5 ppb2027 to 30 ppb
2006-09-1818.17 ppb610 to 28 ppb
2006-09-1521.5 ppb605 to 34 ppb
2006-08-1636 ppb2035 to 37 ppb
2006-08-1524 ppb2022 to 26 ppb
2006-08-1438.33 ppb6025 to 55 ppb
2006-08-1137.6 ppb5025 to 67 ppb
2006-07-1929.67 ppb3026 to 32 ppb
2006-07-1828 ppb2023 to 33 ppb
2006-07-1428 ppb1028 ppb
2006-05-1721.33 ppb3020 to 22 ppb
2006-05-1616.33 ppb3011 to 22 ppb
2006-05-1519.83 ppb6016 to 24 ppb
2006-05-1217 ppb510 to 24 ppb
2006-03-2220 ppb2013 to 27 ppb
2006-03-2112 ppb209 to 15 ppb
2006-03-2012.33 ppb608 to 16 ppb
2006-03-1718.17 ppb610 to 25 ppb
2006-03-1223 ppb1023 ppb
2006-01-2322.83 ppb6018 to 27 ppb
2006-01-2021.83 ppb6016 to 28 ppb
2006-01-1819.5 ppb4018 to 21 ppb
2006-01-1728 ppb2022 to 34 ppb
2005-11-1623.33 ppb3019 to 26 ppb
2005-11-1522.5 ppb2020 to 25 ppb
2005-11-1415.83 ppb610 to 26 ppb
2005-11-1122.75 ppb8018 to 30 ppb
2005-09-2117 ppb409 to 25 ppb
2005-09-2022 ppb2019 to 25 ppb
2005-09-1919.17 ppb6016 to 23 ppb
2005-09-1619.57 ppb710 to 26 ppb
2005-07-2059.75 ppb4044 to 82 ppb
2005-07-1954 ppb2043 to 65 ppb
2005-07-1851.17 ppb6044 to 58 ppb
2005-07-1552.2 ppb5031 to 70 ppb
2005-06-2419.8 ppb508 to 30 ppb
2005-06-2217 ppb5010 to 26 ppb
2005-06-2114 ppb2014 ppb
2005-06-2019 ppb3014 to 28 ppb
2005-05-1822.17 ppb3015.3 to 30.4 ppb
2005-05-1724.7 ppb2022.4 to 27 ppb
2005-05-1623.02 ppb6013.6 to 36.7 ppb
2005-05-1324.1 ppb7015.2 to 31.8 ppb
2005-03-2313.33 ppb609 to 19 ppb
2005-03-2215.29 ppb7012 to 18 ppb
2005-03-2114.4 ppb5012 to 19 ppb
2005-02-2817.5 ppb4015 to 22 ppb
2005-02-2516.38 ppb8013 to 24 ppb
2005-02-2312 ppb410 to 19 ppb
2005-02-2215.33 ppb3014 to 17 ppb
2004-11-1831 ppb1031 ppb
2004-11-1727.6 ppb508 to 49 ppb
2004-11-1623.14 ppb702 to 38 ppb
2004-11-1526 ppb610 to 37 ppb
2004-09-2212.67 ppb3010 to 15 ppb
2004-09-2110 ppb208 to 12 ppb
2004-09-204.5 ppb602 to 7 ppb
2004-09-174.63 ppb802 to 16 ppb
2004-07-2142 ppb4024 to 52 ppb
2004-07-2027 ppb2019 to 35 ppb
2004-07-1923.6 ppb5018 to 28 ppb
2004-07-169.57 ppb701 to 17 ppb
2004-07-0913 ppb1013 ppb
2004-05-1916.33 ppb3012 to 23 ppb
2004-05-1825.33 ppb3022 to 31 ppb
2004-05-1725.2 ppb5018 to 39 ppb
2004-05-1420 ppb8014 to 31 ppb
2004-03-2420.25 ppb4016 to 24 ppb
2004-03-2326.5 ppb2025 to 28 ppb
2004-03-2221.25 ppb4017 to 23 ppb
2004-03-1922.11 ppb9013 to 35 ppb
2004-01-2819.67 ppb3017 to 22 ppb
2004-01-2721.33 ppb3019 to 25 ppb
2004-01-2615.75 ppb4012 to 17 ppb
2004-01-2317.2 ppb501 to 29 ppb