Drinking Water Standards and Health Advisories Summer 2009 Standards 10-kg Child Chemicals Fluometuron


Fluorene (PAH) Fonofos


Formaldehyde Glyphosate Heptachlor


Heptachlor epoxide Hexachlorobenzene Hexachlorobutadiene2


Hexachlorocyclopentadiene Hexachloroethane Hexane (n-) Hexazinone HMX3


Indeno[1,2,3,-c,d]pyrene (PAH) Isophorone


Isopropyl methylphosphonate Isopropylbenzene (cumene) Lindane 4 Malathion


Maleic hydrazide MCPA 5


Methomyl Methoxychlor


Methyl ethyl ketone Methyl parathion


1 2


3 4 5


CAS Number


2164-17-2 86-73-7 944-22-9 50-00-0


1071-83-6 76-44-8


1024-57-3 118-74-1 87-68-3 77-47-4 67-72-1 110-54-3


51235-04-2 2691-41-0 193-39-5 78-59-1


1832-54-8 98-82-8 58-89-9 121-75-5 123-33-1 94-74-6


16752-77-5 72-43-5 78-93-3 298-00-0


Status Reg.


- - - -


F F F F -


F - - - - - - - -


F - - - -


F - -


MCLG (mg/L)


- - - -


0.7


zero zero zero -


0.05 - - - - - - - -


0.0002 - - - -


0.04 - -


MCL (mg/L)


- - - -


0.7


0.0004 0.0002 0.001 -


0.05 - - - - - - - -


0.0002 - - - -


0.04 - -


Status HA


Standards


F ‘88 -


F ‘88 D ‘93 F ‘88 F ‘87 F ‘87 F ‘87 - -


F ‘91 F ‘87 F ‘96 F ‘88 -


F ‘92 F ‘92 D ‘87 F ‘87 F ‘92 F ‘88 F ‘88 F ‘88 F ‘87 F ‘87 F ‘88


One-day (mg/L)


2 -


0.02 10 20


0.01 0.01 0.05 0.3 -


5


10 3 5 -


15 30 11 1


0.2 10


0.1 0.3


0.05 75


0.3


Carcinogenicity based on inhalation exposure. Regulatory Determination Health Effects Support Document for Hexachlorobutadiene (http://www.epa.gov/safewater/ccl/pdfs/reg_determine1/support_cc1_hexachlorobutadiene_healtheffects.pdf). HMX = octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine. Lindane = γ − hexachlorocyclohexane. MCPA = 4 (chloro-2-methoxyphenoxy) acetic acid.


Ten-day (mg/L)


2 -


0.02 5


20


0.01 -


0.05 0.3 -


5 4 2 5 -


15 30 11 1


0.2 10


0.1 0.3


0.05 7.5 0.3


RfD (mg/kg/day)


0.01 0.04


0.002 0.2 2


0.0005


0.00001 0.0008 0.0003 0.006 0.001 -


0.05 0.05 -


0.2 0.1 0.1


0.005 0.07 0.5


0.004 0.025 0.005 0.6


0.0002


DWEL (mg/L)


0.5 1


0.07 7


70 0.02


0.0004 0.03 0.01 0.2


0.04 -


2 2 -


7


3.5 4


0.2 2


20


0.14 0.9 0.2 20


0.007


Life-time (mg/L)


0.09 -


0.01 1 - - - - - -


0.001 -


0.4 0.4 -


0.1 0.7 - -


0.5 4


0.03 0.2


0.04 4


0.001


10_4 Cancer Risk


mg/L at


- - - -


0.0008 0.0004 0.002 0.09 -


0.3 - - - -


4 - - - - - - - - - -


Cancer Descriptor


D D D


B11 D


B2 B2 B2 L


N C I


D D


B2 C D D S S


D N E


D D N


Health Advisories Page 5


5


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