The Power of Information

National Drinking Water Database


City of Modesto Utilities - Modesto, CA


Serves 190,106 people

1,2-Dibromo-3-chloropropane (DBCP)

1,2-Dibromo-3-chloropropane is a persistent pesticide and groundwater contaminant associated with male sterility and severe reproductive toxicity; historically used as a soil fumigant on bananas and pineapples; banned by EPA in early 1980s.
 
This Drinking Water System
Test Days Exceeding Health GuidelinesDefinition of what this is
242 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)
28 days
Test DaysNumber of days in which this chemical has reported results in the data we received from the State
304 days
Tests ConductedNumber of individual tests done for this contaminant
1,058 tests

Testing Summary

ContaminantAverage/
Maximum
Result
Health Limit
Exceeded
Legal Limit
Exceeded

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
1,2-Dibromo-3-chloropropane (DBCP)1,2-Dibromo-3-chloropropane is a persistent pesticide and groundwater contaminant associated with male sterility and severe reproductive toxicity; historically used as a soil fumigant on bananas and pineapples; banned by EPA in early 1980s.0.07 ppb
0.39 ppb
Yes
MCLGA 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.: 0 ppb
Yes
0.2 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 1,2-Dibromo-3-chloropropane (DBCP)

Health Based Limits for 1,2-Dibromo-3-chloropropane (DBCP)

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.0 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.<0.01 ppb
One in one million (10-6) Cancer RiskThe concentration of a chemical in drinking water corresponding to an excess estimated lifetime cancer risk of 1 in 1,000,000. Source: U.S. Environmental Protection Agency.0.03 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.0.2 ppb
One in ten thousand (10-4) Cancer RiskThe concentration of a chemical in drinking water corresponding to an excess estimated lifetime cancer risk of 1 in 10,000. Source: U.S. Environmental Protection Agency.3 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.50 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

Testing Results

Testing DateAverage
Result
Samples taken that dayNumber of Non-DetectsRange of Results
2009-04-070.07 ppb200.04 to 0.1 ppb
2009-03-240.02 ppb210 to 0.04 ppb
2009-03-190.26 ppb200.15 to 0.37 ppb
2009-03-170.34 ppb310 to 0.98 ppb
2009-03-030.02 ppb730 to 0.06 ppb
2009-02-26<0.01 ppb210 to 0.01 ppb
2009-02-190.01 ppb420 to 0.03 ppb
2009-02-10<0.01 ppb530 to 0.02 ppb
2009-02-030.06 ppb510 to 0.17 ppb
2009-01-130 ppb110 ppb
2009-01-060.08 ppb610 to 0.3 ppb
2008-12-160 ppb110 ppb
2008-12-020.02 ppb630 to 0.04 ppb
2008-11-250.3 ppb320 to 0.91 ppb
2008-11-180 ppb220 ppb
2008-11-060.03 ppb100.03 ppb
2008-11-050.14 ppb610 to 0.5 ppb
2008-10-15<0.01 ppb210 to 0.02 ppb
2008-10-080 ppb110 ppb
2008-10-010.05 ppb820 to 0.19 ppb
2008-09-170 ppb110 ppb
2008-09-100.02 ppb420 to 0.05 ppb
2008-09-030.04 ppb730 to 0.13 ppb
2008-08-250 ppb110 ppb
2008-08-120.28 ppb500.01 to 0.84 ppb
2008-08-060.1 ppb200.02 to 0.17 ppb
2008-08-050.18 ppb300.04 to 0.42 ppb
2008-07-280.02 ppb210 to 0.04 ppb
2008-07-160 ppb110 ppb
2008-07-150.09 ppb420 to 0.33 ppb
2008-07-090 ppb110 ppb
2008-07-080.04 ppb410 to 0.08 ppb
2008-06-230 ppb110 ppb
2008-06-170.1 ppb520 to 0.42 ppb
2008-06-120.02 ppb830 to 0.05 ppb
2008-06-10<0.01 ppb320 to 0.02 ppb
2008-06-040 ppb110 ppb
2008-06-030.02 ppb210 to 0.05 ppb
2008-05-270.02 ppb210 to 0.03 ppb
2008-05-220 ppb110 ppb
2008-05-210 ppb110 ppb
2008-05-200 ppb110 ppb
2008-05-190 ppb110 ppb
2008-05-130.28 ppb520 to 0.93 ppb
2008-05-120 ppb110 ppb
2008-05-070 ppb110 ppb
2008-05-060.06 ppb320 to 0.17 ppb
2008-04-290.1 ppb310 to 0.28 ppb
2008-04-230 ppb110 ppb
2008-04-220.29 ppb100.29 ppb
2008-04-150.14 ppb410 to 0.3 ppb
2008-04-090 ppb110 ppb
2008-04-080.12 ppb300.02 to 0.25 ppb
2008-03-270.63 ppb+200.31 to 0.95 ppb
2008-03-110.07 ppb210 to 0.13 ppb
2008-03-050 ppb110 ppb
2008-03-040.03 ppb100.03 ppb
2008-02-250 ppb110 ppb
2008-02-19<0.01 ppb210 to 0.02 ppb
2008-02-120.01 ppb100.01 ppb
2008-02-070.08 ppb210 to 0.16 ppb
2008-02-050.02 ppb100.02 ppb
2008-01-220 ppb110 ppb
2008-01-090 ppb110 ppb
2008-01-080 ppb110 ppb
2008-01-070.06 ppb200.02 to 0.09 ppb
2007-12-260 ppb110 ppb
2007-12-240 ppb220 ppb
2007-12-200 ppb110 ppb
2007-12-190 ppb220 ppb
2007-12-170 ppb220 ppb
2007-12-120 ppb110 ppb
2007-12-11<0.01 ppb210 to 0.01 ppb
2007-12-050 ppb110 ppb
2007-12-040.03 ppb100.03 ppb
2007-12-030 ppb110 ppb
2007-11-200 ppb110 ppb
2007-11-150 ppb110 ppb
2007-11-130.21 ppb310 to 0.6 ppb
2007-11-070.09 ppb210 to 0.18 ppb
2007-11-060.15 ppb300.02 to 0.38 ppb
2007-10-160 ppb110 ppb
2007-10-150 ppb110 ppb
2007-10-090.12 ppb310 to 0.32 ppb
2007-10-030 ppb110 ppb
2007-10-020.03 ppb500.01 to 0.07 ppb
2007-09-11<0.01 ppb320 to 0.01 ppb
2007-09-050 ppb110 ppb
2007-09-040.02 ppb410 to 0.03 ppb
2007-08-210.03 ppb100.03 ppb
2007-08-140.3 ppb310 to 0.73 ppb
2007-08-070.11 ppb400.01 to 0.36 ppb
2007-08-020.15 ppb200.12 to 0.17 ppb
2007-07-170 ppb110 ppb
2007-07-100.07 ppb640 to 0.36 ppb
2007-07-030.04 ppb600.01 to 0.13 ppb
2007-06-130.04 ppb100.04 ppb
2007-06-120.03 ppb520 to 0.1 ppb
2007-06-060.1 ppb100.1 ppb
2007-06-050.04 ppb100.04 ppb
2007-05-240.01 ppb100.01 ppb
2007-05-220.02 ppb100.02 ppb
2007-05-150.02 ppb100.02 ppb
2007-05-140.07 ppb100.07 ppb
2007-05-080.2 ppb520 to 0.9 ppb
2007-05-020.17 ppb200.12 to 0.21 ppb
2007-05-010.39 ppb210 to 0.78 ppb
2007-04-190.24 ppb410 to 0.86 ppb
2007-04-170 ppb330 ppb
2007-04-100.04 ppb410 to 0.06 ppb
2007-04-040.09 ppb100.09 ppb
2007-04-030.01 ppb310 to 0.03 ppb
2007-03-130.04 ppb100.04 ppb
2007-03-070.05 ppb300.02 to 0.08 ppb
2007-03-060.01 ppb320 to 0.03 ppb
2007-02-210.05 ppb200.03 to 0.07 ppb
2007-02-200.04 ppb100.04 ppb
2007-02-140.02 ppb100.02 ppb
2007-02-130.29 ppb200.04 to 0.54 ppb
2007-02-070.09 ppb400.02 to 0.22 ppb
2007-02-060.08 ppb520 to 0.27 ppb
2007-01-170 ppb110 ppb
2007-01-090.04 ppb100.04 ppb
2007-01-030.03 ppb630 to 0.06 ppb
2007-01-020.01 ppb420 to 0.02 ppb
2006-12-130.05 ppb100.05 ppb
2006-12-070 ppb110 ppb
2006-12-060.03 ppb510 to 0.05 ppb
2006-12-050.02 ppb520 to 0.05 ppb
2006-11-150.03 ppb300.02 to 0.04 ppb
2006-11-130.25 ppb200.05 to 0.46 ppb
2006-11-080.01 ppb210 to 0.02 ppb
2006-11-070.18 ppb720 to 0.77 ppb
2006-11-010.07 ppb600.02 to 0.23 ppb
2006-10-170.01 ppb100.01 ppb
2006-10-100.07 ppb200.06 to 0.07 ppb
2006-10-040.03 ppb620 to 0.07 ppb
2006-10-030.02 ppb630 to 0.09 ppb
2006-09-260 ppb110 ppb
2006-09-140.06 ppb100.06 ppb
2006-09-120.06 ppb200.02 to 0.1 ppb
2006-09-060.05 ppb400.03 to 0.07 ppb
2006-09-050.04 ppb720 to 0.15 ppb
2006-08-230 ppb110 ppb
2006-08-220 ppb110 ppb
2006-08-160.03 ppb200.03 ppb
2006-08-090.02 ppb210 to 0.03 ppb
2006-08-080.23 ppb400.02 to 0.77 ppb
2006-08-020.1 ppb400.03 to 0.21 ppb
2006-08-010.13 ppb940 to 0.56 ppb
2006-07-270.05 ppb200.01 to 0.09 ppb
2006-07-180.11 ppb320 to 0.32 ppb
2006-07-120 ppb110 ppb
2006-07-110.28 ppb310 to 0.77 ppb
2006-07-050.08 ppb1430 to 0.44 ppb
2006-06-270 ppb220 ppb
2006-06-130.17 ppb410 to 0.63 ppb
2006-06-070.05 ppb610 to 0.19 ppb
2006-06-060.06 ppb750 to 0.29 ppb
2006-05-170.04 ppb500.02 to 0.08 ppb
2006-05-080.19 ppb520 to 0.84 ppb
2006-05-030.05 ppb820 to 0.21 ppb
2006-05-020.08 ppb640 to 0.33 ppb
2006-04-180 ppb110 ppb
2006-04-110.24 ppb320 to 0.72 ppb
2006-04-050.02 ppb620 to 0.05 ppb
2006-04-040.08 ppb840 to 0.35 ppb
2006-03-140.32 ppb210 to 0.64 ppb
2006-03-080 ppb110 ppb
2006-03-070.07 ppb940 to 0.25 ppb
2006-03-020 ppb110 ppb
2006-03-010.04 ppb630 to 0.17 ppb
2006-02-220.02 ppb100.02 ppb
2006-02-210 ppb220 ppb
2006-02-15<0.01 ppb310 to 0.01 ppb
2006-02-140.15 ppb430 to 0.6 ppb
2006-02-080.01 ppb210 to 0.02 ppb
2006-02-070.04 ppb1280 to 0.24 ppb
2006-02-010.06 ppb710 to 0.21 ppb
2006-01-260.21 ppb200.13 to 0.28 ppb
2006-01-120.08 ppb210 to 0.16 ppb
2006-01-100.36 ppb210 to 0.71 ppb
2006-01-040.05 ppb410 to 0.08 ppb
2006-01-030.09 ppb1230 to 0.3 ppb
2005-12-280 ppb110 ppb
2005-12-270 ppb110 ppb
2005-12-210 ppb110 ppb
2005-12-200 ppb110 ppb
2005-12-14<0.01 ppb210 to 0.01 ppb
2005-12-130 ppb220 ppb
2005-12-070.04 ppb410 to 0.06 ppb
2005-12-060.1 ppb1250 to 0.51 ppb
2005-11-230.06 ppb310 to 0.14 ppb
2005-11-220.15 ppb310 to 0.23 ppb
2005-11-160.05 ppb320 to 0.16 ppb
2005-11-150.24 ppb320 to 0.72 ppb
2005-11-090.09 ppb210 to 0.17 ppb
2005-11-080.01 ppb210 to 0.02 ppb
2005-11-020.05 ppb520 to 0.14 ppb
2005-11-010.15 ppb300.01 to 0.37 ppb
2005-10-260.09 ppb630 to 0.21 ppb
2005-10-250.04 ppb200.02 to 0.06 ppb
2005-10-190.05 ppb320 to 0.16 ppb
2005-10-120.06 ppb420 to 0.21 ppb
2005-10-110.05 ppb610 to 0.13 ppb
2005-10-060.04 ppb300.02 to 0.06 ppb
2005-10-050.15 ppb510 to 0.53 ppb
2005-10-040 ppb110 ppb
2005-09-290.3 ppb310 to 0.84 ppb
2005-09-280.08 ppb530 to 0.23 ppb
2005-09-270.04 ppb210 to 0.07 ppb
2005-09-210.08 ppb210 to 0.15 ppb
2005-09-200.09 ppb310 to 0.14 ppb
2005-09-140.07 ppb530 to 0.18 ppb
2005-09-130.03 ppb310 to 0.04 ppb
2005-09-070.05 ppb300.03 to 0.06 ppb
2005-09-060.16 ppb530 to 0.72 ppb
2005-09-010.02 ppb100.02 ppb
2005-08-250.01 ppb210 to 0.03 ppb
2005-08-240.02 ppb320 to 0.07 ppb
2005-08-230.08 ppb100.08 ppb
2005-08-160.37 ppb320 to 1.1 ppb
2005-08-100 ppb110 ppb
2005-08-090.03 ppb100.03 ppb
2005-08-030.03 ppb310 to 0.05 ppb
2005-08-020.02 ppb210 to 0.05 ppb
2005-07-270.1 ppb730 to 0.24 ppb
2005-07-260.29 ppb200.2 to 0.38 ppb
2005-07-200.03 ppb210 to 0.05 ppb
2005-07-190.16 ppb310 to 0.42 ppb
2005-07-130 ppb220 ppb
2005-07-060.03 ppb210 to 0.06 ppb
2005-07-050.21 ppb210 to 0.42 ppb
2005-06-280.14 ppb520 to 0.42 ppb
2005-06-220.03 ppb210 to 0.07 ppb
2005-06-210.1 ppb310 to 0.25 ppb
2005-06-150 ppb110 ppb
2005-06-140.03 ppb410 to 0.07 ppb
2005-06-080.04 ppb410 to 0.06 ppb
2005-06-070.28 ppb310 to 0.81 ppb
2005-06-010.04 ppb210 to 0.08 ppb
2005-05-310 ppb110 ppb
2005-05-250.08 ppb310 to 0.22 ppb
2005-05-240.13 ppb210 to 0.25 ppb
2005-05-170.18 ppb630 to 0.8 ppb
2005-05-120.01 ppb640 to 0.06 ppb
2005-05-100.03 ppb310 to 0.06 ppb
2005-05-050.03 ppb100.03 ppb
2005-05-040.11 ppb400.06 to 0.17 ppb
2005-05-030.14 ppb310 to 0.4 ppb
2005-04-270.17 ppb200.16 to 0.17 ppb
2005-04-260.14 ppb200.01 to 0.26 ppb
2005-04-210.14 ppb200.13 to 0.14 ppb
2005-04-200.02 ppb210 to 0.04 ppb
2005-04-190.12 ppb420 to 0.41 ppb
2005-04-140.13 ppb200.13 ppb
2005-04-130.01 ppb210 to 0.02 ppb
2005-04-120.04 ppb200.03 to 0.06 ppb
2005-04-070.17 ppb200.16 to 0.18 ppb
2005-04-060.04 ppb100.04 ppb
2005-04-050.15 ppb420 to 0.58 ppb
2005-03-290.15 ppb200.14 to 0.15 ppb
2005-03-240.15 ppb200.13 to 0.16 ppb
2005-03-170.07 ppb410 to 0.15 ppb
2005-03-100.04 ppb610 to 0.07 ppb
2005-03-030.06 ppb420 to 0.22 ppb
2005-02-240.12 ppb610 to 0.36 ppb
2005-02-170.03 ppb740 to 0.08 ppb
2005-02-100.02 ppb210 to 0.03 ppb
2005-02-030.08 ppb530 to 0.36 ppb
2005-01-270.04 ppb310 to 0.11 ppb
2005-01-200.06 ppb630 to 0.26 ppb
2005-01-130.02 ppb410 to 0.03 ppb
2005-01-110.02 ppb100.02 ppb
2005-01-060.07 ppb1360 to 0.33 ppb
2004-12-300.02 ppb650 to 0.12 ppb
2004-12-230.04 ppb1080 to 0.31 ppb
2004-12-160.06 ppb500.03 to 0.1 ppb
2004-12-090.02 ppb15100 to 0.09 ppb
2004-11-180.27 ppb410 to 0.76 ppb
2004-11-040.08 ppb1430 to 0.19 ppb
2004-10-140.08 ppb1020 to 0.22 ppb
2004-10-070.05 ppb920 to 0.18 ppb
2004-09-160.08 ppb830 to 0.34 ppb
2004-09-090.06 ppb510 to 0.17 ppb
2004-08-120.18 ppb1120 to 0.94 ppb
2004-08-050.3 ppb410 to 0.75 ppb
2004-07-220.04 ppb420 to 0.1 ppb
2004-07-150.02 ppb100.02 ppb
2004-07-080.03 ppb1770 to 0.14 ppb
2004-06-100.16 ppb820 to 0.48 ppb
2004-06-070 ppb110 ppb
2004-06-030.09 ppb600.03 to 0.16 ppb
2004-05-130.06 ppb410 to 0.14 ppb
2004-05-060.09 ppb1010 to 0.31 ppb
2004-04-290 ppb110 ppb
2004-04-150.03 ppb410 to 0.06 ppb
2004-04-080.09 ppb1210 to 0.26 ppb
2004-03-110.04 ppb620 to 0.11 ppb
2004-03-040.08 ppb1230 to 0.22 ppb
2004-02-120.09 ppb1240 to 0.35 ppb
2004-02-050.11 ppb620 to 0.42 ppb
2004-01-150.08 ppb1020 to 0.24 ppb
2004-01-080.07 ppb630 to 0.23 ppb