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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Philadelphia Water Department

Dibromochloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Dibromochloromethane and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

MORE ABOUT THIS CONTAMINANT

 

487

Samples

0

Samples exceeding legal limit (MCL)

436

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20141.54 ppb7968ND - 4.10 ppb
20152.42 ppb2521ND - 6.30 ppb
20162.19 ppb4844ND - 6.10 ppb
20172.68 ppb5244ND - 7.60 ppb
20186.31 ppb5150ND - 14.0 ppb
20193.61 ppb232209ND - 16.1 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.1 ppb

The EWG Health Guideline of 0.1 ppb for dibromochloromethane was proposed in 2018 by the California Office of Environmental Health Hazard Assessment as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.

ppb = parts per billion

All test results

Date Lab ID Result
2014-01-087337161ND
2014-01-087337162ND
2014-01-087337150ND
2014-01-087337163ND
2014-01-087337164ND
2014-01-0873371511.30 ppb
2014-01-0873371651.50 ppb
2014-01-0873371570.500 ppb
2014-01-0873371660.800 ppb
2014-01-0873371671.20 ppb
2014-01-0873371601.30 ppb
2014-01-0873371561.10 ppb
2014-01-0873371550.700 ppb
2014-01-0873371540.600 ppb
2014-01-0873371521.60 ppb
2014-01-0873371531.40 ppb
2014-02-0673620500.700 ppb
2014-02-0673620510.600 ppb
2014-02-0673620581.20 ppb
2014-02-0673620520.700 ppb
2014-02-0673620530.700 ppb
2014-02-0673620573.30 ppb
2014-02-0673620543.10 ppb
2014-02-0673620433.10 ppb
2014-02-0673620552.60 ppb
2014-02-0673620562.90 ppb
2014-02-0673620473.00 ppb
2014-02-0673620483.00 ppb
2014-02-0673620461.20 ppb
2014-02-0673620491.70 ppb
2014-02-0673620443.20 ppb
2014-02-0673620453.20 ppb
2014-03-1274030030.900 ppb
2014-03-1274030040.800 ppb
2014-03-1274029941.30 ppb
2014-03-1274030050.900 ppb
2014-03-1274030060.900 ppb
2014-03-1274029953.20 ppb
2014-03-1274030082.90 ppb
2014-03-1274030013.10 ppb
2014-03-1274030092.50 ppb
2014-03-1274030103.20 ppb
2014-03-1274030024.10 ppb
2014-03-1274030003.30 ppb
2014-03-1274029992.30 ppb
2014-03-1274029982.20 ppb
2014-03-1274029963.40 ppb
2014-03-1274029973.40 ppb
2014-04-0974261980.600 ppb
2014-04-0974262010.500 ppb
2014-04-0974261900.600 ppb
2014-04-0974261990.500 ppb
2014-04-0974262000.600 ppb
2014-04-0974261912.50 ppb
2014-04-0974261942.70 ppb
2014-04-0974261882.50 ppb
2014-04-0974261951.90 ppb
2014-04-0974261961.80 ppb
2014-04-0974261891.90 ppb
2014-04-0974261860.900 ppb
2014-04-0974261931.40 ppb
2014-04-0974261922.60 ppb
2014-04-1174280273.10 ppb
2014-05-077457122ND
2014-05-077457125ND
2014-05-077457131ND
2014-05-077457123ND
2014-05-077457124ND
2014-05-0774571322.50 ppb
2014-05-0774571271.50 ppb
2014-05-0774571381.000 ppb
2014-05-0774571281.40 ppb
2014-05-0774571291.30 ppb
2014-05-0774571391.10 ppb
2014-05-077457137ND
2014-05-0774571360.700 ppb
2014-05-0774571331.000 ppb
2014-05-0774571341.20 ppb
2014-05-0774571351.20 ppb
2015-06-10128882891.60 ppb
2015-06-10128882941.10 ppb
2015-06-10128882991.20 ppb
2015-06-10128883041.20 ppb
2015-06-10128883814.40 ppb
2015-06-10128882795.40 ppb
2015-06-10128883866.30 ppb
2015-06-10128883916.10 ppb
2015-06-10128882855.60 ppb
2015-07-0813018044ND
2015-07-0813018047ND
2015-07-08130180350.700 ppb
2015-07-0813018045ND
2015-07-0813018046ND
2015-07-08130180362.70 ppb
2015-07-08130180482.90 ppb
2015-07-08130180412.60 ppb
2015-07-08130180493.40 ppb
2015-07-08130180503.10 ppb
2015-07-08130180432.80 ppb
2015-07-08130180401.90 ppb
2015-07-08130180421.20 ppb
2015-07-08130180371.30 ppb
2015-07-08130180382.50 ppb
2015-07-08130180392.60 ppb
2016-04-13141094231.20 ppb
2016-04-13141094271.30 ppb
2016-04-13141094251.30 ppb
2016-04-13141094241.20 ppb
2016-04-13141094261.30 ppb
2016-04-13141094376.00 ppb
2016-04-13141094335.40 ppb
2016-04-13141094386.10 ppb
2016-04-13141094313.80 ppb
2016-04-13141094303.60 ppb
2016-04-13141094365.70 ppb
2016-04-13141094324.10 ppb
2016-04-13141094282.40 ppb
2016-04-13141094293.30 ppb
2016-04-13141094345.60 ppb
2016-04-13141094355.70 ppb
2016-05-11142571510.600 ppb
2016-05-11142571540.600 ppb
2016-05-11142571561.000 ppb
2016-05-11142571520.600 ppb
2016-05-11142571530.600 ppb
2016-05-11142571662.50 ppb
2016-05-11142571601.40 ppb
2016-05-11142571621.50 ppb
2016-05-11142571591.20 ppb
2016-05-11142571581.10 ppb
2016-05-11142571571.000 ppb
2016-05-11142571550.800 ppb
2016-05-11142571631.60 ppb
2016-05-11142571641.80 ppb
2016-05-11142571611.50 ppb
2016-05-11142571651.80 ppb
2016-12-14153798420.580 ppb
2016-12-1415379840ND
2016-12-14153798440.890 ppb
2016-12-1415379839ND
2016-12-1415379838ND
2016-12-14153798533.90 ppb
2016-12-14153798471.90 ppb
2016-12-14153798430.630 ppb
2016-12-14153798513.30 ppb
2016-12-14153798523.30 ppb
2016-12-14153798482.90 ppb
2016-12-1415379841ND
2016-12-14153798461.90 ppb
2016-12-14153798451.70 ppb
2016-12-14153798493.10 ppb
2016-12-14153798503.20 ppb
2017-01-11155234500.660 ppb
2017-01-11155234470.580 ppb
2017-01-11155234520.810 ppb
2017-01-11155234480.630 ppb
2017-01-11155234510.690 ppb
2017-01-11155234623.90 ppb
2017-01-11155234592.90 ppb
2017-01-11155234582.90 ppb
2017-01-11155234562.50 ppb
2017-01-11155234572.50 ppb
2017-01-11155234552.40 ppb
2017-01-11155234490.640 ppb
2017-01-11155234531.50 ppb
2017-01-11155234541.70 ppb
2017-01-11155234603.30 ppb
2017-01-11155234613.40 ppb
2017-03-0815802582ND
2017-03-08158025853.60 ppb
2017-03-0815802583ND
2017-03-0815802584ND
2017-07-12164197741.50 ppb
2017-07-12164197761.50 ppb
2017-07-12164197731.40 ppb
2017-07-12164197751.50 ppb
2017-07-12164197771.60 ppb
2017-07-12164197867.10 ppb
2017-07-12164197856.70 ppb
2017-07-12164197823.50 ppb
2017-07-12164197793.00 ppb
2017-07-12164197803.30 ppb
2017-07-12164197834.60 ppb
2017-07-12164197846.60 ppb
2017-07-12164197783.00 ppb
2017-07-12164197813.50 ppb
2017-07-12164197887.60 ppb
2017-07-12164197877.30 ppb
2017-11-0817029135ND
2017-11-0817029136ND
2017-11-08170291400.730 ppb
2017-11-0817029137ND
2017-11-0817029138ND
2017-11-08170291433.60 ppb
2017-11-08170291454.40 ppb
2017-11-08170291443.90 ppb
2017-11-08170291474.90 ppb
2017-11-08170291464.70 ppb
2017-11-08170291495.10 ppb
2017-11-0817029139ND
2017-11-08170291411.60 ppb
2017-11-08170291421.80 ppb
2017-11-08170291505.50 ppb
2017-11-08170291485.00 ppb
2018-08-088083919-01REND
2018-08-088083919-03RE0.900 ppb
2018-08-088083919-020.800 ppb
2018-10-10DW181010-0535.00 ppb
2018-10-10DW181010-0545.00 ppb
2018-10-10DW181010-0075.00 ppb
2018-10-10DW181010-0556.00 ppb
2018-10-10DW181010-0566.00 ppb
2018-10-10DW181010-01411.0 ppb
2018-10-10DW181010-05711.0 ppb
2018-10-10DW181010-03111.0 ppb
2018-10-10DW181010-05813.0 ppb
2018-10-10DW181010-05914.0 ppb
2018-10-10DW181010-05113.0 ppb
2018-10-10DW181010-03012.0 ppb
2018-10-10DW181010-0478.00 ppb
2018-10-10DW181010-0249.00 ppb
2018-10-10DW181010-01712.0 ppb
2018-10-10DW181010-01811.0 ppb
2018-11-07DW181107-0523.00 ppb
2018-11-07DW181107-0533.00 ppb
2018-11-07DW181107-0064.00 ppb
2018-11-07DW181107-0543.00 ppb
2018-11-07DW181107-0553.00 ppb
2018-11-07DW181107-01310.00 ppb
2018-11-07DW181107-0237.00 ppb
2018-11-07DW181107-0169.00 ppb
2018-11-07DW181107-0179.00 ppb
2018-11-08DW181108-0179.00 ppb
2018-11-08DW181108-0588.00 ppb
2018-11-08DW181108-0575.00 ppb
2018-11-08DW181108-0446.00 ppb
2018-11-08DW181108-0476.00 ppb
2018-11-08DW181108-0564.00 ppb
2018-11-08DW181108-0616.00 ppb
2018-12-12DW181212-0513.00 ppb
2018-12-12DW181212-0523.00 ppb
2018-12-12DW181212-0064.00 ppb
2018-12-12DW181212-0533.00 ppb
2018-12-12DW181212-0543.00 ppb
2018-12-12DW181212-0137.00 ppb
2018-12-12DW181212-0554.00 ppb
2018-12-12DW181212-0297.00 ppb
2018-12-12DW181212-0565.00 ppb
2018-12-12DW181212-0575.00 ppb
2018-12-12DW181212-0495.00 ppb
2018-12-12DW181212-0283.00 ppb
2018-12-12DW181212-0455.00 ppb
2018-12-12DW181212-0225.00 ppb
2018-12-12DW181212-0614.00 ppb
2018-12-12DW181212-0167.00 ppb
2019-01-09DW190109-051ND
2019-01-09DW190109-052ND
2019-01-09DW190109-006ND
2019-01-09DW190109-053ND
2019-01-09DW190109-054ND
2019-01-09DW190109-0131.40 ppb
2019-01-09DW190109-0551.20 ppb
2019-01-09DW190109-0291.60 ppb
2019-01-09DW190109-0561.20 ppb
2019-01-09DW190109-0571.30 ppb
2019-01-09DW190109-0491.40 ppb
2019-01-09DW190109-0280.700 ppb
2019-01-09DW190109-0451.000 ppb
2019-01-09DW190109-0221.000 ppb
2019-01-09DW190109-0610.900 ppb
2019-01-09DW190109-0161.50 ppb
2019-02-13DW190213-0524.00 ppb
2019-02-13DW190213-0534.00 ppb
2019-02-13DW190213-0064.00 ppb
2019-02-13DW190213-0544.00 ppb
2019-02-13DW190213-0554.00 ppb
2019-02-13DW190213-0137.00 ppb
2019-02-13DW190213-0567.00 ppb
2019-02-13DW190213-0308.00 ppb
2019-02-13DW190213-0575.00 ppb
2019-02-13DW190213-0586.00 ppb
2019-02-13DW190213-0507.00 ppb
2019-02-13DW190213-0296.00 ppb
2019-02-13DW190213-0466.00 ppb
2019-02-13DW190213-0236.00 ppb
2019-02-13DW190213-0167.00 ppb
2019-02-13DW190213-0178.00 ppb
2019-02-27DW190227-0536.00 ppb
2019-02-27DW190227-0546.00 ppb
2019-02-27DW190227-0555.00 ppb
2019-02-27DW190227-0528.00 ppb
2019-02-27DW190227-0567.00 ppb
2019-02-27DW190227-0577.00 ppb
2019-02-27DW190227-0587.00 ppb
2019-03-13DW190313-0521.000 ppb
2019-03-13DW190313-0531.000 ppb
2019-03-13DW190313-0061.10 ppb
2019-03-13DW190313-0541.000 ppb
2019-03-13DW190313-0551.000 ppb
2019-03-13DW190313-0133.90 ppb
2019-03-13DW190313-0563.70 ppb
2019-03-13DW190313-0304.10 ppb
2019-03-13DW190313-0572.00 ppb
2019-03-13DW190313-0582.70 ppb
2019-03-13DW190313-0503.70 ppb
2019-03-13DW190313-0291.000 ppb
2019-03-13DW190313-0462.60 ppb
2019-03-13DW190313-0232.50 ppb
2019-03-13DW190313-0163.90 ppb
2019-03-13DW190313-0174.20 ppb
2019-04-10DW190410-0530.800 ppb
2019-04-10DW190410-0540.600 ppb
2019-04-10DW190410-0070.600 ppb
2019-04-10DW190410-0550.800 ppb
2019-04-10DW190410-0560.600 ppb
2019-04-10DW190410-0143.80 ppb
2019-04-10DW190410-0573.30 ppb
2019-04-10DW190410-0315.80 ppb
2019-04-10DW190410-0585.10 ppb
2019-04-10DW190410-0595.30 ppb
2019-04-10DW190410-0514.60 ppb
2019-04-10DW190410-0300.700 ppb
2019-04-10DW190410-0472.70 ppb
2019-04-10DW190410-0243.20 ppb
2019-04-10DW190410-0174.80 ppb
2019-04-10DW190410-0184.80 ppb
2019-05-15DW190515-053ND
2019-05-15DW190515-054ND
2019-05-15DW190515-0070.600 ppb
2019-05-15DW190515-0550.700 ppb
2019-05-15DW190515-0560.600 ppb
2019-05-15DW190515-0143.10 ppb
2019-05-15DW190515-0573.00 ppb
2019-05-15DW190515-031ND
2019-05-15DW190515-0591.90 ppb
2019-05-15DW190515-0512.70 ppb
2019-05-15DW190515-0302.30 ppb
2019-05-15DW190515-0661.30 ppb
2019-05-15DW190515-0241.90 ppb
2019-05-15DW190515-0173.20 ppb
2019-05-15DW190515-0183.20 ppb
2019-05-16DW190516-0531.10 ppb
2019-06-12DW190612-0530.800 ppb
2019-06-12DW190612-0540.800 ppb
2019-06-12DW190612-0070.600 ppb
2019-06-12DW190612-055ND
2019-06-12DW190612-056ND
2019-06-12DW190612-0144.00 ppb
2019-06-12DW190612-0573.40 ppb
2019-06-12DW190612-0311.20 ppb
2019-06-12DW190612-0586.80 ppb
2019-06-12DW190612-0596.60 ppb
2019-06-12DW190612-0515.40 ppb
2019-06-12DW190612-030ND
2019-06-12DW190612-0472.60 ppb
2019-06-12DW190612-0243.20 ppb
2019-06-12DW190612-0175.20 ppb
2019-06-12DW190612-0184.60 ppb
2019-07-10DW190710-0531.10 ppb
2019-07-10DW190710-0541.40 ppb
2019-07-10DW190710-0071.50 ppb
2019-07-10DW190710-0551.40 ppb
2019-07-10DW190710-0561.40 ppb
2019-07-10DW190710-0149.10 ppb
2019-07-10DW190710-0575.50 ppb
2019-07-10DW190710-0585.10 ppb
2019-07-10DW190710-0596.20 ppb
2019-07-10DW190710-0517.20 ppb
2019-07-10DW190710-0475.30 ppb
2019-07-10DW190710-0244.90 ppb
2019-07-10DW190710-0178.70 ppb
2019-07-10DW190710-0189.00 ppb
2019-07-12DW190712-0504.60 ppb
2019-07-12DW190712-0491.10 ppb
2019-07-319076788-301.30 ppb
2019-07-319076788-341.30 ppb
2019-07-319076788-202.10 ppb
2019-07-319076788-311.30 ppb
2019-07-319076788-331.30 ppb
2019-07-319076788-213.30 ppb
2019-07-319076788-323.90 ppb
2019-07-319076788-264.20 ppb
2019-07-319076788-374.60 ppb
2019-07-319076788-364.10 ppb
2019-07-319076788-283.40 ppb
2019-07-319076788-252.90 ppb
2019-07-319076788-272.00 ppb
2019-07-319076788-393.20 ppb
2019-07-319076788-224.20 ppb
2019-07-319076788-234.10 ppb
2019-08-149084257-011.70 ppb
2019-08-149084257-021.80 ppb
2019-08-149084044-011.90 ppb
2019-08-149084257-031.70 ppb
2019-08-149084257-041.80 ppb
2019-08-149084044-025.90 ppb
2019-08-149084041-014.00 ppb
2019-08-149084039-026.30 ppb
2019-08-149084041-028.80 ppb
2019-08-149084041-039.10 ppb
2019-08-149084039-047.90 ppb
2019-08-149084039-011.80 ppb
2019-08-149084039-035.40 ppb
2019-08-149084044-055.80 ppb
2019-08-149084044-036.30 ppb
2019-08-149084044-046.70 ppb
2019-09-119092914-012.10 ppb
2019-09-119092914-042.00 ppb
2019-09-119092924-012.30 ppb
2019-09-119092914-022.00 ppb
2019-09-119092914-032.00 ppb
2019-09-119092924-027.30 ppb
2019-09-119092910-017.90 ppb
2019-09-119092910-027.00 ppb
2019-09-119092910-036.50 ppb
2019-09-119092906-045.40 ppb
2019-09-119092906-017.10 ppb
2019-09-119092906-032.40 ppb
2019-09-119092924-075.40 ppb
2019-09-119092924-038.70 ppb
2019-09-119092924-047.80 ppb
2019-09-129093291-019.90 ppb
2019-10-099103122-012.90 ppb
2019-10-099103122-022.80 ppb
2019-10-099103122-05ND
2019-10-099103116-013.50 ppb
2019-10-099103122-033.00 ppb
2019-10-099103122-043.00 ppb
2019-10-099103116-0215.9 ppb
2019-10-099103125-0115.1 ppb
2019-10-099103121-0214.3 ppb
2019-10-099103125-0211.3 ppb
2019-10-099103125-0311.6 ppb
2019-10-099103121-0412.0 ppb
2019-10-099103121-013.20 ppb
2019-10-099103121-0311.5 ppb
2019-10-099103116-0512.5 ppb
2019-10-099103116-0316.1 ppb
2019-10-099103116-0415.5 ppb
2019-11-13DW191113-053ND
2019-11-13DW191113-054ND
2019-11-13DW191113-007ND
2019-11-13DW191113-055ND
2019-11-13DW191113-056ND
2019-11-13DW191113-0141.80 ppb
2019-11-13DW191113-0571.60 ppb
2019-11-13DW191113-0312.80 ppb
2019-11-13DW191113-0582.20 ppb
2019-11-13DW191113-0592.30 ppb
2019-11-13DW191113-0511.90 ppb
2019-11-13DW191113-030ND
2019-11-13DW191113-0472.20 ppb
2019-11-13DW191113-0241.80 ppb
2019-11-13DW191113-0172.40 ppb
2019-11-13DW191113-0182.00 ppb
2019-11-26DW191126-053ND
2019-11-26DW191126-037ND
2019-11-26DW191126-002ND
2019-11-26DW191126-054ND
2019-11-26DW191126-055ND
2019-11-26DW191126-0574.70 ppb
2019-11-26DW191126-0582.70 ppb
2019-11-26DW191126-0075.40 ppb
2019-11-269122170-024.30 ppb
2019-11-269122170-034.60 ppb
2019-11-26DW191126-0274.70 ppb
2019-11-26DW191126-0593.90 ppb
2019-11-26DW191126-0562.40 ppb
2019-11-26DW191126-0643.00 ppb
2019-11-26DW191126-0174.70 ppb
2019-11-26DW191126-0184.80 ppb
2019-12-119124211-010.700 ppb
2019-12-119124211-020.600 ppb
2019-12-119124206-010.700 ppb
2019-12-119124211-030.600 ppb
2019-12-119124211-040.600 ppb
2019-12-119124206-021.90 ppb
2019-12-119124208-011.90 ppb
2019-12-119124207-022.20 ppb
2019-12-119124208-022.60 ppb
2019-12-119124208-032.60 ppb
2019-12-119124207-041.90 ppb
2019-12-119124207-010.700 ppb
2019-12-119124207-031.30 ppb
2019-12-119124206-051.50 ppb
2019-12-119124206-032.10 ppb
2019-12-119124206-042.00 ppb