The Power of Information

National Drinking Water Database


Stuart City of - Water Plant Utilities - Stuart, FL


Serves 19,000 people

Chloroform

Chloroform is a disinfection byproduct from the trihalomethane (THM) family, and is 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
10 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)
1 days
Test DaysNumber of days in which this chemical has reported results in the data we received from the State
68 days
Tests ConductedNumber of individual tests done for this contaminant
268 tests

Testing Summary

ContaminantAverage/
Maximum
Result
Health Limit
Exceeded
Legal Limit
Exceeded

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
ChloroformChloroform is a disinfection byproduct from the trihalomethane (THM) family, and is formed when chlorine, chloramines or other disinfectants react with organic and inorganic matter in water.5.99 ppb
170 ppb
Yes
5.7 ppb
Yes
80 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 Chloroform

Health Based Limits for Chloroform

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.5.7 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.35 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
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.80 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.4000 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.4000 ppb

Testing Results

Testing DateAverage
Result
Samples taken that dayNumber of Non-DetectsRange of Results
2008-12-1729 ppb1029 ppb
2008-09-3053 ppb1053 ppb
2008-06-1218 ppb1018 ppb
2008-03-100 ppb880 ppb
2008-02-074.98 ppb970 to 44 ppb
2008-01-080 ppb220 ppb
2007-12-100 ppb880 ppb
2007-11-1516 ppb1016 ppb
2007-11-140 ppb110 ppb
2007-11-120 ppb14140 ppb
2007-10-100 ppb880 ppb
2007-09-25170 ppb10170 ppb
2007-09-050 ppb220 ppb
2007-09-040.05 ppb870 to 0.42 ppb
2007-08-0139.59 ppb1760 to 460 ppb
2007-07-050.13 ppb970 to 0.85 ppb
2007-06-131.7 ppb210 to 3.4 ppb
2007-05-100 ppb990 ppb
2007-05-020 ppb110 ppb
2007-04-110.28 ppb1090 to 2.8 ppb
2007-03-205.7 ppb205.4 to 6 ppb
2007-03-120 ppb12120 ppb
2007-03-080 ppb550 ppb
2007-02-2725 ppb1025 ppb
2007-02-082 ppb12100 to 12 ppb
2007-01-050 ppb770 ppb
2007-01-041.36 ppb420 to 4.6 ppb
2006-12-180 ppb110 ppb
2006-12-150 ppb550 ppb
2006-11-217.5 ppb107.5 ppb
2006-11-130 ppb550 ppb
2006-10-170 ppb110 ppb
2006-10-160 ppb550 ppb
2006-09-190 ppb440 ppb
2006-09-130 ppb220 ppb
2006-08-070 ppb440 ppb
2006-05-090 ppb220 ppb
2006-05-080 ppb330 ppb
2006-04-050 ppb440 ppb
2006-03-080 ppb220 ppb
2006-03-020 ppb330 ppb
2006-02-060.13 ppb210 to 0.25 ppb
2006-01-040 ppb220 ppb
2005-12-080 ppb110 ppb
2005-12-070.26 ppb100.26 ppb
2005-11-030 ppb110 ppb
2005-10-126.7 ppb106.7 ppb
2005-10-110 ppb110 ppb
2005-09-070 ppb110 ppb
2005-08-225.4 ppb105.4 ppb
2005-08-090.23 ppb210 to 0.45 ppb
2005-07-110 ppb550 ppb
2005-06-020 ppb110 ppb
2005-05-110 ppb17170 ppb
2005-04-110 ppb10100 ppb
2004-11-120 ppb220 ppb
2004-10-205.7 ppb105.7 ppb
2004-10-080 ppb220 ppb
2004-08-090 ppb220 ppb
2004-07-204.6 ppb104.6 ppb
2004-07-120 ppb220 ppb
2004-06-100 ppb220 ppb
2004-05-100 ppb220 ppb
2004-04-2910.2 ppb205.4 to 15 ppb
2004-04-020 ppb220 ppb
2004-03-050 ppb220 ppb
2004-02-090 ppb220 ppb
2004-01-090 ppb220 ppb