The Power of Information

National Drinking Water Database


Baltimore City Department of Public Works Utilities - Baltimore, MD


Serves 1,600,000 people

Monochloroacetic acid

Monochloroacetic 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
0 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
886 tests

Testing Summary

ContaminantAverage/
Maximum
Result
Health Limit
Exceeded
Legal Limit
Exceeded

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
Monochloroacetic acidMonochloroacetic 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.0.99 ppb
5 ppb
No
70 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 Monochloroacetic acid

Health Based Limits for Monochloroacetic acid

StandardDescriptionLevel
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
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.70 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.70 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.200 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.200 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.350 ppb

Testing Results

Testing DateAverage
Result
Samples taken that dayNumber of Non-DetectsRange of Results
2007-11-190 ppb12120 ppb
2007-11-183 ppb203 ppb
2007-11-160.33 ppb12100 to 2 ppb
2007-11-140.33 ppb12100 to 2 ppb
2007-09-191.5 ppb420 to 3 ppb
2007-09-181.5 ppb420 to 3 ppb
2007-09-171.67 ppb620 to 3 ppb
2007-09-140.64 ppb22160 to 3 ppb
2007-07-191.33 ppb1260 to 3 ppb
2007-07-181 ppb420 to 2 ppb
2007-07-170 ppb440 ppb
2007-07-160 ppb12120 ppb
2007-05-161.33 ppb620 to 2 ppb
2007-05-150 ppb440 ppb
2007-05-141.17 ppb1260 to 3 ppb
2007-05-112 ppb1240 to 5 ppb
2007-03-210 ppb660 ppb
2007-03-200 ppb440 ppb
2007-03-190 ppb12120 ppb
2007-03-160 ppb10100 ppb
2007-02-022 ppb202 ppb
2007-01-242 ppb402 ppb
2007-01-230.5 ppb420 to 1 ppb
2007-01-221.17 ppb1201 to 2 ppb
2007-01-191.2 ppb1001 to 2 ppb
2006-11-220 ppb220 ppb
2006-11-212 ppb602 ppb
2006-11-201.67 ppb1240 to 3 ppb
2006-11-171 ppb1240 to 2 ppb
2006-09-201.67 ppb620 to 3 ppb
2006-09-192.5 ppb402 to 3 ppb
2006-09-181.33 ppb1220 to 2 ppb
2006-09-151.83 ppb1240 to 5 ppb
2006-08-160 ppb440 ppb
2006-08-150 ppb440 ppb
2006-08-140.5 ppb12100 to 3 ppb
2006-08-110 ppb10100 ppb
2006-07-190 ppb660 ppb
2006-07-180 ppb440 ppb
2006-07-141 ppb201 ppb
2006-05-172 ppb602 ppb
2006-05-160.67 ppb620 to 1 ppb
2006-05-150.33 ppb12100 to 2 ppb
2006-05-120.2 ppb1080 to 1 ppb
2006-03-221.5 ppb401 to 2 ppb
2006-03-210 ppb440 ppb
2006-03-200.33 ppb1280 to 1 ppb
2006-03-171.17 ppb1240 to 3 ppb
2006-03-120 ppb220 ppb
2006-01-231.5 ppb1220 to 2 ppb
2006-01-201.33 ppb1220 to 2 ppb
2006-01-180 ppb880 ppb
2006-01-170 ppb440 ppb
2005-11-160 ppb660 ppb
2005-11-150 ppb440 ppb
2005-11-140 ppb12120 ppb
2005-11-110.63 ppb1660 to 1 ppb
2005-09-210 ppb880 ppb
2005-09-201 ppb420 to 2 ppb
2005-09-190.83 ppb1240 to 2 ppb
2005-09-160 ppb14140 ppb
2005-07-201.5 ppb820 to 2 ppb
2005-07-191 ppb420 to 2 ppb
2005-07-180.17 ppb12100 to 1 ppb
2005-07-150 ppb10100 ppb
2005-06-242.4 ppb1001 to 4 ppb
2005-06-221.6 ppb1001 to 4 ppb
2005-06-211 ppb401 ppb
2005-06-201.33 ppb601 to 2 ppb
2005-05-180 ppb660 ppb
2005-05-170 ppb440 ppb
2005-05-160 ppb12120 ppb
2005-05-130.63 ppb1480 to 1.93 ppb
2005-03-230.5 ppb1280 to 2 ppb
2005-03-220.43 ppb14100 to 2 ppb
2005-03-211.4 ppb1001 to 2 ppb
2005-02-282.5 ppb820 to 6 ppb
2005-02-253.5 ppb1602 to 6 ppb
2005-02-232 ppb820 to 3 ppb
2005-02-221.67 ppb620 to 3 ppb
2004-11-180 ppb220 ppb
2004-11-170.4 ppb1080 to 2 ppb
2004-11-160.71 ppb14100 to 3 ppb
2004-11-150.33 ppb12100 to 2 ppb
2004-09-225 ppb603 to 6 ppb
2004-09-215 ppb404 to 6 ppb
2004-09-204.67 ppb1201 to 8 ppb
2004-09-171.63 ppb1640 to 5 ppb
2004-07-211 ppb801 ppb
2004-07-200.5 ppb420 to 1 ppb
2004-07-191.6 ppb1020 to 3 ppb
2004-07-161.57 ppb1401 to 2 ppb
2004-07-092 ppb202 ppb
2004-05-192 ppb601 to 3 ppb
2004-05-181.33 ppb601 to 2 ppb
2004-05-171.2 ppb1020 to 2 ppb
2004-05-141.75 ppb1620 to 4 ppb
2004-03-241 ppb801 ppb
2004-03-231 ppb401 ppb
2004-03-220.75 ppb820 to 1 ppb
2004-03-191.33 ppb1820 to 5 ppb
2004-01-280 ppb660 ppb
2004-01-270 ppb660 ppb
2004-01-260 ppb880 ppb
2004-01-230 ppb10100 ppb