
Contaminants
Most common contaminants
1,1,2-Trichloroethane1,2-Dibromo-3-chloropropane (DBCP)1,2-Dichloroethane1,2-Dichloropropane1,2,4-Trichlorobenzene2,3,7,8-TCDD (Dioxin)2,4-D2,4,5-TP (Silvex)AntimonyArsenicAtrazineBariumBenzeneBenzo[a]pyreneBerylliumBromateCadmiumCarbofuranCarbon tetrachlorideChlordaneChloriteCyanideDi(2-ethylhexyl) adipateDi(2-ethylhexyl) phthalateDichloromethane (methylene chloride)DiquatEndothallEndrinEthylbenzeneEthylene dibromideGlyphosateHaloacetic acids (HAA5)HeptachlorHeptachlor epoxideHexachlorobenzene (HCB)HexachlorocyclopentadieneLeadLindaneMercury (inorganic)MethoxychlorMonochlorobenzene (chlorobenzene)NitrateNitrate and nitriteo-DichlorobenzeneOxamyl (Vydate)p-DichlorobenzenePentachlorophenolPfasPicloramPolychlorinated biphenyls (PCBs)Radium, combined (-226 & -228)SeleniumSimazineStyreneTetrachloroethylene (perchloroethylene)ThalliumTolueneTotal trihalomethanes (TTHMs)Toxaphenetrans-1,2-DichloroethyleneTrichloroethyleneUraniumVinyl chlorideXylenes (total)All Contaminants
#
1-Butanol 1,1-Dichloroethane1,1-Dichloroethylene1,1-Dichloropropene1,1,1-Trichloro-2-propanone1,1,1-Trichloroethane1,1,1,2-Tetrachloroethane1,1,2-Trichloroethane1,1,2,2-Tetrachloroethane1,1,2,2-tetrafluoro-2-(1,2,2,2-tetrafluoro-ethoxy)ethane sulfonic acid (NVHOS)1,2-Dibromo-3-chloropropane (DBCP)1,2-Dichloroethane1,2-Dichloropropane1,2,3-Trichlorobenzene1,2,3-Trichloropropane1,2,3-Trimethylbenzene1,2,4-Trichlorobenzene1,2,4-Trimethylbenzene1,3-Butadiene1,3-Dichloropropane1,3-Dichloropropene1,3,5-Trimethylbenzene1,4-Dioxane17-beta-Estradiol2-Furancarboxyaldehyde2-Hexanone2-Methoxyethanol2-Methyl naphthalene2-Methylbutane2-Nitropropane2-propen-1-ol 2,2-Dichloropropane2,3,7,8-TCDD (Dioxin)2,4-D2,4-DB2,4,5-T2,4,5-TP (Silvex)3-Hydroxycarbofuran4-Androstene-3,17-dione4,8-dioxa-3H-perfluorononanoic acid (ADONA) 6:2 Fluorotelomer sulfonate (6 2FTS) 8:2 Fluorotelomer sulfonate (8:2FTS) 1-Butanol 1,1-Dichloroethane1,1-Dichloroethylene1,1-Dichloropropene1,1,1-Trichloro-2-propanone1,1,1-Trichloroethane1,1,1,2-Tetrachloroethane1,1,2-Trichloroethane1,1,2,2-Tetrachloroethane1,1,2,2-tetrafluoro-2-(1,2,2,2-tetrafluoro-ethoxy)ethane sulfonic acid (NVHOS)1,2-Dibromo-3-chloropropane (DBCP)1,2-Dichloroethane1,2-Dichloropropane1,2,3-Trichlorobenzene1,2,3-Trichloropropane1,2,3-Trimethylbenzene1,2,4-Trichlorobenzene1,2,4-Trimethylbenzene1,3-Butadiene1,3-Dichloropropane1,3-Dichloropropene1,3,5-Trimethylbenzene1,4-Dioxane2-Furancarboxyaldehyde2-Hexanone2-Methoxyethanol2-Methyl naphthalene2-Methylbutane2-Nitropropane2-propen-1-ol 2,2-Dichloropropane2,3,7,8-TCDD (Dioxin)2,4-D2,4-DB2,4,5-T2,4,5-TP (Silvex)3-Hydroxycarbofuran4-Androstene-3,17-dione4,8-dioxa-3H-perfluorononanoic acid (ADONA) 6:2 Fluorotelomer sulfonate (6 2FTS) 8:2 Fluorotelomer sulfonate (8:2FTS) 17-beta-EstradiolA
AcenaphtheneAcenaphthyleneAcetaldhydeAcetochlorAcetoneAlachlor (Lasso)Alachlor ESAAldicarbAldicarb sulfoneAldicarb sulfoxideAldrinalpha-ChlordaneAlpha-hexachlorocyclohexanealpha-LindaneAluminumAnthraceneAntimonyArsenicAsbestosAtrazineB
BariumBenzaldehydeBenzeneBenzo[a]anthraceneBenzo[a]pyreneBenzo[b]fluorantheneBenzo[g,h,i]peryleneBenzo[k]fluorantheneBenzoic acidBenzyl alcoholBerylliumbis(2-chloroethyl) etherBromacilBromateBromideBromobenzeneBromochloroacetic acidBromochloromethaneBromodichloroacetic acidBromodichloromethaneBromoformBromomethaneButachlorButaneButyl benzyl phthalateButyl citrateButylatebutylated hydroxyanisoleC
CadmiumCaffeineCaptanCarbarylCarbofuranCarbon tetrachlorideChlorateChlordaneChloriteChloroacetonitrileChlorodibromoacetic acidChlorodifluoromethaneChlorodifluoromethaneChloroethaneChloroformChloromethaneChlorpyrifosChromium (hexavalent)Chromium (total)Chrysenecis-1,2-Dichloroethylenecis-1,3-DichloropropeneCobaltCopperCyanazine (Bladex)CyanideCyanide (free)CyclohexaneD
DacthalDalaponDCPA di-acid degradateDCPA mono- and di-acid degradatesDDTDesethylatrazineDesisopropylatrazineDi-n-butyl phthalateDi(2-ethylhexyl) adipateDi(2-ethylhexyl) phthalateDiazinon (Spectracide)Dibenz[a,h]anthraceneDibromoacetic acidDibromochloromethaneDibromomethaneDicambaDichloroacetic acidDichloroacetonitrileDichlorodifluoromethaneDichlorofluoromethaneDichloromethane (methylene chloride)DieldrinDiethyl phthalateDiisobutyl phthalateDimethipinDimethoateDimethyl phthalateDinosebDiquatDisulfotonE
E314E335EndothallEndrinEstriolEthanesulfonic acid, 2-[1-[difluoro(1,2,2,2-tetrafluoroethoxy)methyl]-1,2,2,2-tetrafluoroethoxy]-1,1,2,2-tetrafluoroEthinyl estradiolEthopropEthyl etherEthylbenzeneEthylene dibromideH
Haloacetic acids (HAA5)Haloacetic acids (HAA9)HeptachlorHeptachlor epoxideHexachlorobenzene (HCB)HexachlorobutadieneHexachlorocyclopentadieneHexadecanoic acidHexafluoropropylene oxide dimer acid (HFPO-DA)Hexane(s)HexazinoneHydrogen sulfideI
Indeno[1,2,3-cd]pyreneIodomethaneIsobutaneIsooctyl alcoholIsophoroneIsopropyl alcoholIsopropyl chlorideIsopropyl etherIsopropylbenzeneM
m-DichlorobenzeneManganeseMercury (inorganic)MethaneMethiocarbMethomylMethoxychlorMethyl ethyl ketoneMethyl isobutyl ketoneMethylcyclohexaneMethylcyclopentaneMetolachlorMetolachlor ethane sulfonic acidMetolachlor oxanilic acidMetribuzinMolybdenumMonobromoacetic acidMonochloroacetic acidMonochlorobenzene (chlorobenzene)MTBEN
n-Butyl alcoholn-ButylbenzeneN-ethyl perfluorooctane sulfonamido acetic acid (N-EtFOSAA) N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)N-Nitrosodi-N-butylamineN-Nitrosodi-N-propylamineN-Nitrosodimethylamine (NDMA)n-PropylbenzeneNaphthaleneNitrateNitrate and nitriteNitriteP
p-Chlorotoluenep-Cresolp-Dichlorobenzenep-IsopropyltolueneParaquatPcnbPentachlorophenolPentanePerchloratePerfluoro-2-ethoxypropanoic acid (PEPA) Perfluoro-2-methoxyacetic acid (PFMOAA)Perfluoro-2-methoxypropanoic acid (PMPA)Perfluoro-2-methyl-3-oxahexanoic acid (GenX) Perfluoro-3-methoxypropanoic acid (PFMOPrA)Perfluoro-4-methoxybutanic acid (PFMOBA) Perfluoro(3,5-dioxahexanoic) acid (PFO2HxA)Perfluoro(3,5,7-trioxaoctanoic) acid (PFO3OA)Perfluoro(3,5,7,9-tetraoxadecanoic) acid (PFO4DA)Perfluorobutane sulfonamide (FBSA)Perfluorobutane sulfonate (PFBS)Perfluorobutanoic Acid (PFBA)Perfluorodecanoic acid (PFDA) Perfluorodecanoic acid (PFDA) Perfluoroheptane sulfonic acid (PFHpS)Perfluoroheptanoic acid (PFHPA)Perfluoroheptanoic acid (PFHpA) Perfluorohexane sulfonamide (FHxSA)Perfluorohexane sulfonate (PFHXS)Perfluorohexanoic Acid (PFHxA)Perfluorononanoic acid (PFNA)Perfluorooctane sulfonate (PFOS)Perfluorooctanoic acid (PFOA)Perfluoropentane sulfonic acid (PFPeS)Perfluoropentanoic Acid (PFPeA)Perfluorotetradecanoic acid (PFTA) Perfluorotridecanoic acid (PFTrDA)Perfluoroundecanoic acid (PFUnA) PermethrinPhenanthrenePhenolsPicloramPolychlorinated biphenyls (PCBs)Potassium-40ProfenofosPrometonPropachlorPyreneT
Tebuconazole tert-Amyl methyl ethertert-Butyl alcoholtert-ButylbenzeneTestosteroneTetrachloroethylene (perchloroethylene)Tetrachloroterephthalic acidTetradecanoic acidTetrahydrofuranThalliumThiobencarbThoriumTitaniumTolueneTotal Per- and polyfluoroalkyl substances Total PFOS and PFOATotal trihalomethanes (TTHMs)Toxaphenetrans-1,2-Dichloroethylenetrans-1,3-DichloropropeneTribromoacetic acidTribufosTrichloroacetic acidTrichloroethyleneTrichlorofluoromethaneTrichlorotrifluoroethaneTrifluralinTritiumWhat’s in your water?
Haloacetic acids (HAA5)
Increased risk of cancer
EWG guideline0.1 ppb
Legal limit60 ppb
ppb = Parts per billion
Haloacetic acids are formed when disinfectants such as chlorine are added to tap water. The group of five haloacetic acids regulated by federal standards includes monochloroacetic acid, dichloroacetic acid, trichloroacetic acid, monobromoacetic acid and dibromoacetic acid.
States affected
51
Utilities affected
30,731
Population affected
290,298,891
You should know
There are five haloacetic acids (HAA5) that occur as a by-product of water treatment using chlorination. The five acids are monochloroacetic acid, dichloroacetic acid, trichloroacetic acid, monobromoacetic acid, and dibromoacetic acid. Additionally, HAAs are not affected by boiling or storage. However, filtration is effective in decreasing their levels.
For some people, drinking water with elevelated levels of HAAs can lead to a higher risk of cancer, reporoductive issues, rectal issues, fetal growth, and adolescent development.
For some people, drinking water with elevelated levels of HAAs can lead to a higher risk of cancer, reporoductive issues, rectal issues, fetal growth, and adolescent development.
Learn more about Haloacetic acids (HAA5) here.
Health concerns
- Increased risk of cancer
LARQ filter effectiveness for Haloacetic acids (HAA5)
What’s in your water?
States reporting contamination
State
Utilities
Above guidelines
Population affected
Nevada
87
86
2,7M
Missouri
512
509
4,4M
Kentucky
372
368
4,5M
West Virginia
419
419
1,6M
Ohio
934
932
9,9M
Wisconsin
588
576
3,9M
Tennessee
435
430
7,1M
Montana
262
260
585,4K
Arizona
313
305
5,9M
Indiana
596
595
4,9M