Comparison of State Water Guidance and Federal Drinking Water Standards

April 2025

The information below is intended to assist with evaluation of levels of drinking water contaminants. Definitions of different types of water guidance, shown below in the table, can be found on the Guidance Values and Standards for Contaminants in Drinking Water webpage. 

An Excel table providing the Comparison of State Water Guidance and Federal Drinking Water Standards (Excel) is also available for download.

For questions or more information, please see the Links below about water guidance, or contact Health Risk Assessment Unit.

A | B | C | D | E | F | G | H | I | J | K | L
M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

Chemical Name
CAS Number
(if available)		EPA MCL (μg/L)EPA MCLG (μg/L)Lowest EPA Health Advisory (μg/L)Type of HA valueLowest MDH Value (μg/L)Type and date of MDH valueDuration of Exposure
Acenaphthene
83-32-9		  2000DWEL100HRL18Chronic
Acetaminophen
103-90-2		    200HRL15Acute
Acetochlor
34256-82-1		    20HRL18Chronic
Acetochlor ESA
187022-11-3		    300HRL18Chronic
Acetochlor OXA
184992-44-4		    90HRL18Chronic
Acetone
67-64-1		    3000HRL23Chronic
Acetyl-1,1,2,4,4,7 hexamethyltetraline (AHTN), 6-
21145-77-7 or 1506-02-1		    20HRL13Chronic
Acifluorfen (sodium)
62476-59-9		  100cancer   
Acrylamide
79-06-1		TTzero70DWEL0.2HRL15Cancer
Acrylonitrile
107-13-1		  6cancer   
Alachlor
15972-60-8		2zero40cancer9HRL18Chronic
Alachlor ESA
142363-53-9		    50RAA16Chronic
Alachlor OXA
171262-17-2		    50RAA16Chronic
Aldicarb
116-06-3		317life-time1HRL93Chronic
Aldicarb sulfone
1646-88-4		217life-time   
Aldicarb sulfoxide
1646-87-3		417life-time   
Aldrin
309-00-2		  0.2cancer   
Allyl Chloride
107-05-1		    30HRL94Chronic
Ametryn
834-12-8		  60life-time   
Aminomethylphosphonic acid (AMPA)
1066-51-9		    1000HRL23Chronic
Ammonia
7664-41-7		  30000life-time   
Ammonium sulfamate
7773-06-0		  2000life-time   
Anatoxin-a
64285-06-9		    0.1RAA16Short-Term
Anthracene
120-12-7		  10000DWEL2000HRL93Chronic
Anthracene
120-12-7		  10000DWEL600RAA19Chronic
Antimony
7440-36-0		666life-time6HRL93Chronic
Arsenic
7440-38-2		10zero2cancer   
Asbestos (fibers/l >10Fm length)
1332-21-4		7 MFL7 MFL700 MFLcancer   
Atrazine
1912-24-9		33700DWEL3HRLMCLChronic
Barium
7440-39-3		200020007001 day2000HRL93Chronic
Baygon
114-26-1		  3life-time   
Bentazon
25057-89-0		  200life-time30HRL15Chronic
Benzene
71-43-2		5zero3life-time2HRL09Cancer
Benzo[a]pyrene
50-32-8		0.2zero0.5cancer0.1HRL23Cancer
Benzoic Acid
65-85-0		    30000HRL93Chronic
Benzophenone
119-61-9		    100HRL23Subchronic
Benzotriazole, -1H
95-14-7		    20HRL23Short-Term
Benzotriazole, methyl-1H
29385-43-1		    20RAA19Short-Term
Benzotriazole, 5-methyl-1H
136-85-6		    20RAA19Short-Term
Beryllium
7440-41-7		4470DWEL0.08HRL93Cancer
Beta particle and photon activity (formerly man-made radionuclides)4 mrem/yrzero4 mrem/yrcancer   
Biphenyl
92-52-4		    10HRL23Cancer
Bis(2-chloro-1-methylethyl) ether
108-60-1		  300life-time   
Bis(2-chloroethyl) ether
111-44-4		    0.3HRL93Cancer
Bis(2-chloromethyl) ether
542-88-1		    0.002HRL93Cancer
Bisphenol A
80-05-7		    20HRL15Subchronic
Boron
7440-42-8		  30001 day500RAA17Short-Term
Bromacil
314-40-9		  70life-time   
Bromate
7789-38-0		10zero5cancer   
Bromobenzene
108-86-1		  60life-time   
Bromochloromethane
74-97-5		  90life-time   
Bromodichloromethane
75-27-4		80zero100cancer3HRL23Cancer
Bromoform
75-25-2		80zero20010 day40HRL93Cancer
Bromomethane
74-83-9		  10life-time10HRL93Chronic
Butanol, 1-
71-36-3		    700HRL93Chronic
Butyl benzyl phthalate
85-68-7		  7000DWEL100HRL15Acute
Butylate
2008-41-5		  400life-time   
Butylphthalyl butylglycolate
85-70-1		    7000HRL93Chronic
Cadmium
7440-43-9		555life-time0.5HRL15Chronic
Carbamazepine
298-46-4		    40HRL13Acute
Carbaryl
63-25-2		  400DWEL   
Carbofuran
1563-66-2		4040     
Carbon Disulfide
75-15-0		    700HRL93Chronic
Carbon tetrachloride
56-23-5		5zero30life-time1HRL13Cancer
Carboxin
5234-68-4		  700life-time   
Chloramben
133-90-4		  100life-time100HRL94Chronic
Chloramine
10599-90-3		400040003000life-time   
Chlordane
12798-03-6		2zero4life-time   
Chlorine
7782-50-5		4000400030001 day   
Chlorine dioxide
10049-04-4		8008008001 day   
Chlorite
7758-19-2		10008008001 day   
Chlorobenzene
108-90-7		100100100life-time100HRL93Chronic
Chloroethane
75-00-3		     RAA16 
Chloroform
67-66-3		807070life-time20HRL18Short-Term
Chloromethane
74-87-3		  40010 day   
Chlorophenol, 2-
95-57-8		  40life-time30HRL93Chronic
Chlorothalonil
1897-45-6		  150cancer30HRL94Cancer
Chlorothalonil
1897-45-6		    1HBV23Chronic
Chlorotoluene o-
95-49-8		  100life-time   
Chlorotoluene p-
106-43-4		  100life-time   
Chlorpyrifos
2921-88-2		  2life-time0.6HBV13Short-Term
Chlorpyrifos oxon
5598-15-2		    0.4RAA13Short-Term
Chromium (total)
7440-47-3		100100100DWEL   
Chromium III
16065-83-1		    20000HRL94Chronic
Chromium VI
18540-29-9		    100HRL93Chronic
Clothianidin
210880-92-5 or 205510-53-8		    200HRL18Short-Term
Copper (at tap)
7440-50-8		TT - action level of 1.3 mg/L1300     
Cumene (Isopropyl benzene)
98-82-8		    300HRL93Chronic
Cyanazine
21725-46-2		  1life-time1HRL18Chronic
Cyanazine acid (CAC) (degradate of Cyanazine)
36576-43-9		    1RAA20Chronic
Cyanazine amide (CAM) (degradate of Cyanazine)
36576-42-8		    1RAA20Chronic
Cyanide
143-33-9		2002002001 day   
Cyanide, free
57-12-5		    100HRL93Chronic
Cyanogen chloride
506-77-4		  501 day   
Cylindrospermopsin
143545-90-8		  0.710 day   
Dimethyl tetrachloroterephthalate (DCPA or Dacthal)
1861-32-1		  70life-time   
Dalapon (sodium salt)
75-99-0		200200200life-time   
Deethylatrazine (DEA) (degradate of Atrazine)
6190-65-4		    3RAA20Chronic
Deethylcyanazine (DEC) (degradate of Cyanazine)
21725-40-6		    1RAA20Chronic
Deethylcyanazine acid (DCAC) (degradate of Cyanazine)
36749-35-6		    1RAA20Chronic
Deethylcyanazine amide (DCAM) (degradate of Cyanazine)
36556-77-1		    1RAA20Chronic
Deethyldeisopropylatrazine (DACT, DEDI, DDA) (degradate of Atrazine and Cyanazine)
3397-62-4		    1RAA20Chronic
Deisopropylatrazine (DIA) (degradate of Atrazine and Cyanazine)
1007-28-9		    1RAA20Chronic
Desvenlafaxine
93413-62-8; 300827-87-6; 386750-22-7; 93414-04-1		    20HBV15Short-Term
Desvenlafaxine - succinate salt
386750-22-7		    20HBV15Short-Term
Di(2-ethylhexyl)adipate
103-23-1		400400400life-time   
Di(2-ethylhexyl)phthalate
117-81-7		6zero300cancer7HRL15Cancer
Diazinon
333-41-5		  1life-time   
Dibromochloromethane
124-48-1		806060life-time10HRL93Chronic
Dibromochloropropane (DBCP)
96-12-8		0.2zero3cancer   
Dibromoethane, 1,2-  (Ethylene dibromide (EDB))
106-93-4		0.05zero2cancer0.004HRL93Cancer
Dibromoethane, 1,2-  (Ethylene dibromide (EDB))
106-93-4		0.05zero2cancer0.03HBV23Cancer
Dibutyl phthalate
84-74-2		  4000DWEL20HRL15Acute
Dicamba
1918-00-9		  4000life-time200HRL93Chronic
Dichloroacetic acid
79-43-6		60zero30life-time   
Dichlorobenzene
541-73-1		  600life-time   
Dichlorobenzene, 1,2-
95-50-1		600600600life-time600HRL93Chronic
Dichlorobenzene, 1,4-
106-46-7		757575life-time50HRL23Short-Term
Dichlorobenzidine, 3,3'-
91-94-1		    0.8HRL93Cancer
Dichlorodifluoromethane
75-71-8		  1000life-time700HRL11Chronic
Dichlorodifluoromethane
75-71-8		  1000life-time500RAA17Chronic
Dichlorodiphenyldichloroethane, p,p'- (DDD)
72-54-8		    1HRL93Cancer
p,p'-Dichlorodiphenyldichloroethylene, (DDE)
72-55-9		    1HRL93Cancer
Dichlorodiphenyltrichloroethane, p,p'-(DDT)
50-29-3		    1HRL93Cancer
Dichloroethane, 1,1-
75-34-3		    80RAA16Chronic
Dichloroethane (EDC), 1,2-
107-06-2		5zero40cancer1HRL13Cancer
Dichloroethylene, 1,1-
75-35-4		776cancer200HRL23Subchronic
Dichloroethylene (cis-1,2-)
156-59-2		707010life-time6HRL18Chronic
Dichloroethylene (trans-1,2-)
156-60-5		100100100life-time9HRL23Chronic
Dichlorofluoromethane
75-43-4		    20RAA17Short-Term
Dichloromethane
75-09-2		5zero200life-time5HRLMCLChronic
Dichlorophenol, 2,4-
120-83-2		  20life-time20HRL93Chronic
Dichlorophenoxyacetic acid, 2,4- (2,4-D)
94-75-7		7070200DWEL30HRL18Chronic
Dichloropropane, 1,2-
78-87-5		5zero60cancer3HRL23Cancer
Dichloropropene, 1,3-
542-75-6		  301 day2HRL94Cancer
Dieldrin
60-57-1		  0.2cancer0.006HRL18Cancer
Diethyl phthalate
84-66-2		  30000DWEL6000HRL93Chronic
Diethyl-meta-toluamide (DEET), N,N-
134-62-3		    200HRL13Short-Term
Diisopropylmethylphosphonate
1445-75-6		  600life-time   
Diketonitrile (DKN)
143701-75-1		    7RAA24Chronic
Dimethenamid Ethanesulfonic acid (ESA)
205939-58-8		    300RAA13Chronic
Dimethenamid Oxanilic acid (OXA)
380412-59-9		    300RAA13Chronic
Dimethenamid-p
163515-14-8		    300HRL15Chronic
Dimethrin
70-38-2		  2000life-time   
Dimethyl methylphosphonate
756-79-6		  100life-time   
Dimethyl phthalate
131-11-3		    70000HRL94Chronic
Dimethyl tetrachloroterephthalate (DCPA or Dacthal)
1861-32-1		  70life-time   
Dimethylphenol, 2,4-
105-67-9		    100HRL93Chronic
Dinitrobenzene,1,3-
99-65-0		  1life-time   
Dinitrophenol, 2,4-
51-28-5		    10HRL93Chronic
Dinitrotoluene, 2,4-
121-14-2		  5cancer   
Dinitrotoluene, 2,6-
606-20-2		  5cancer   
Dinoseb
88-85-7		777life-time8HRL18Short-Term
Dioxane, 1,4-
123-91-1		  35cancer1HRL13Cancer
Diphenamid
957-51-7		  200life-time   
Diquat
85-00-7		202020DWEL   
Disulfoton
298-04-4		  0.7life-time0.3HRL94Chronic
Dithiane (1,4-)
505-29-3		  80life-time   
Diuron
330-54-1		  100DWEL   
Endothall
145-73-3		10010050life-time   
Endrin
72-20-8		222life-time   
Epichlorohydrin
106-89-8		TT2zero70DWEL   
17α-Ethinylestradiol
57-63-6		    0.0002HRL23Subchronic
Ethyl dipropylthiocarbamate, S-(EPTC)
759-94-4		    40HRL18Chronic
Ethyl ether
60-29-7		    200RAA16Chronic
Ethylbenzene
100-41-4		700700700life-time40HRL23Short-Term
Ethylene glycol
107-21-1		  600010 day2000HRL23Subchronic
Ethylene Thiourea (ETU)
96-45-7		  7DWEL   
Fenamiphos
22224-92-6		  0.7life-time   
Fluometuron
2164-17-2		  90life-time   
Fluoranthene
206-44-0		    70HRL18Chronic
Fluorene
86-73-7		  1000DWEL80HRL23Chronic
Fluoride
7681-49-4		40004000     
Fomesafen
72178-02-0		    20HRL23Chronic
Fonofos
944-22-9		  10life-time   
Formaldehyde
50-00-0		  1000life-time1000HRL94Chronic
GenX Chemicals: Hexafluoropropylene Oxide (HFPO) dimer acid and HFPO dimer acid ammonium salt
13252-13-6, 62037-80-3		0.01

1 (unitless Hazard Index; see References below)		0.01

1 (unitless Hazard Index; see References below)		0.01life-time   
Glyphosate
1071-83-6		700700200001 day500HBV17Chronic
Gross alpha particle activity15 pCi/Lzero15 pCi/Lcancer   
Heptachlor
76-44-8		0.4zero0.8cancer0.08HRL93Cancer
Heptachlor epoxide
1024-57-3		0.2zero0.4cancer0.04HRL93Cancer
Hexachlorobenzene
118-74-1		1zero2cancer0.2HRL93Cancer
Hexachlorobutadiene
87-68-3		  10DWEL1HRL93Chronic
Hexachlorocyclopentadiene
77-47-4		5050200DWEL   
Hexachloroethane
67-72-1		  1life-time   
Hexane (n-hexane)
110-54-3		  400010 day80RAA22Chronic
Hexazinone
51235-04-2		  400life-time   
HMX
2691-41-0		  400life-time   
4-Hydroxychlorothalonil
28343-61-5		    2RAA23Short-Term
Imidacloprid
138261-41-3		    2HRL23Short-Term
Isobutanol
78-83-1		    300HBV16Chronic
Isophorone
78-59-1		  100life-time100HRL93Chronic
Isopropyl methylphosphonate
1832-54-8		  700life-time   
Isopropylbenzene (cumene)
98-82-8		  4000DWEL300HRL93Chronic
Isoxaflutole
141112-29-0		    7HBV24Chronic
Lead (at tap)
7439-92-1		TT  action level is 0.015 mg/Lzero     
Lindane
58-89-9		0.20.2200DWEL   
Linuron
330-55-2		    1HRL93Chronic
Malathion
121-75-5		  2001 day   
Maleic hydrazide
123-33-1		  4000life-time   
Manganese
7439-96-5		  300life-time100HRL23Short-Term
Mercury (inorganic)
7487-94-7		2221 day   
Mestranol
72-33-3		    0.0002RAA16Subchronic
MCPA (2-Methyl-4-chlorophenoxyacetic acid)
94-74-6		  30life-time3HRL93Chronic
Methanol
67-56-1		    3000HRL94Chronic
Methomyl
16752-77-5		  200life-time   
Methoxychlor
72-43-5		404040life-time   
Methyl ethyl ketone
78-93-3		  4000life-time4000HRL94Chronic
Methyl ethyl ketone
78-93-3		  4000life-time400HBV25Short-term
Methylene chloride (see Dichloromethane)
75-09-2		       
Methyl isobutyl ketone
108-10-1		    300HRL94Chronic
Methyl parathion
298-00-0		  1life-time   
Methyl tertiary butyl ether (MTBE)
1634-04-4		    60RAA13Cancer
Methylnaphthalene, 2-
91-57-6		    8RAA13Chronic
Methylphenol, 2-
95-48-7		    30HRL93Chronic
Methylphenol, 3-
108-39-4		    30HRL93Chronic
Methylphenol, 4-
106-44-5		    3HRL94Chronic
Metolachlor
51218-45-2		  700life-time300HRL23Short-Term
s-Metolachlor
87392-12-9		    300HRL23Short-Term
Metolachlor ESA
171118-09-5		    1,000HRL23Chronic
Metolachlor OXA
152019-73-3		    1,000HRL23Chronic
Metribuzin
21087-64-9		  70life-time10HRL13Short-Term
Metribuzin DA
35045-02-4		    10RAA12Short-Term
Metribuzin DADK
52236-30-3		    10RAA12Short-Term
Metribuzin DK
56507-37-0		    10RAA12Short-Term
Microcystin-LR
101043-37-2		  0.310 day0.1HBV15Short-Term
Molybdenum
7439-98-7		  40life-time   
Monochloroacetic acid
79-11-8		607070life-time   
Naphthalene
91-20-3		  100life-time70HRL13Acute
Nickel
7440-02-0		  100life-time100HRL93Chronic
Nitrate (as N)
14797-55-8		1000010000100001 day10000HRLMCLAcute
Nitrite (as N)
14797-65-0		1000100010001 day   
Nitroguanidine
556-88-7		  700life-time   
Nitrophenol p-
100-02-7		  60life-time   
N-Nitrosodimethylamine (NDMA)
62-75-9		    0.005HBV17Cancer
Nitrosodiphenylamine, N-
86-30-6		    70HRL93Cancer
Nonylphenol, p-
84852-15-3		    20HRL23Chronic
Octylphenol, 4-tert
140-66-9		    100HRL23Short-Term
Oxamyl (Vydate)
23135-22-0		200200101 day   
Paraquat
1910-42-5		  30life-time   
Pentachlorophenol
87-86-5		1zero9cancer0.3HRL15Cancer
Perchlorate
14797-73-0		  15life-time   
Perfluorobutane sulfonate (PFBS)
45187-15-3; 375-73-5; 29420-49-3; 68259-10-9; 60453-92-1		1 (unitless)71 (unitless)72life-time0.1HRL23Short-Term
Perfluorobutyrate (PFBA)
45048-62-2; 375-22-4		    7HRL18Short-Term
Perfluorohexane sulfonate (PFHxS)
108427-53-8; 355-46-4; 3871-99-6		0.01

1 (unitless)7		0.01

1 (unitless)7		  0.047HRL23Short-Term
Perfluorohexanoate (PFHxA)
92612-52-7; 307-24-4; 21615-47-4; 2923-26-4		    0.2HRL23Short-Term
Perfluorononanoic acid (PFNA)
72007-68-2		0.01

1 (unitless)7		0.01

1 (unitless)7		     
Perfluorooctanoic Acid (PFOA) and salts
45285-51-6; 335-67-1; 335-66-0;
3825-26-1; 2395-00-8; 335-93-3;
335-95-5		  0.07life-time0.035HRL18Short-Term
Perfluorooctanoic Acid (PFOA) and salts
45285-51-6; 335-67-1; 3825-26-1; 2395-00-8; 335-95-5;
335-93-3		0.00400.07life-time

0.0000079

HBV24Cancer
Perfluorooctane Sulfonate (PFOS) and salts
45298-90-6; 1763-23-1; 29081-56-9; 70225-14-8; 2795-39-3; 29457-72-5		  0.07life-time0.3HRL09Chronic
Perfluorooctane Sulfonate (PFOS) and salts
45298-90-6; 1763-23-1; 29081-56-9; 70225-14-8; 2795-39-3; 29457-72-5		0.00400.07life-time0.0023HBV24Short-Term
Phenol
108-95-2		  2000life-time4000HRL93Chronic
Picloram
1918-02-1		500500700DWEL500HRL93Chronic
Polychlorinated biphenyls (PCBs)
1336-36-3		0.5zero10cancer0.04HRL94Cancer
Prometon
1610-18-0		  2001 day100HRL93Chronic
Pronamide
23950-58-5		  100cancer   
Propachlor
1918-16-7		  100cancer90HRL93Chronic
Propazine
139-40-2		  10life-time   
Propham
122-42-9		  100life-time   
Pyraclostrobin
175013-18-0		    100HBV16Short-Term
Pyrene
129-00-0		    50HRL18Chronic
Quinoline
91-22-5		    0.03HRL23Cancer
Radium 226 & 228 (combined)
7440-14-4		5 pCi/Lzero     
RDX
21-82-4		  2life-time   
Selenium
7782-49-2		505050life-time30HRL93Chronic
Silver
7440-22-4		  100life-time30HRL93Chronic
Simazine
122-34-9		44700DWEL4HRLMCLChronic
Strontium
7440-24-6		  4000life-time3000RAA19Short-Term
Styrene
100-42-5		100100100life-time   
Sulfamethazine
57-68-1		    100HRL15Short-Term
Sulfamethoxazole
723-46-6		    100RAA13Short-Term
Sulfamethazine, sodium salt
1981-58-4		    100HBV13Short-Term
Sulfentrazone
122836-35-5		    60HBV25Short-Term
Sulfentrazone 3-Carboxylic Acid
134391-01-08		    60RAA25Short-Term
TCDD, 2,3,7,8- (Dioxin)
1746-01-6		0.00003zero0.00002cancer   
Tebuthiuron
34014-18-1		  500life-time   
Terbacil
5902-51-2		  90life-time   
Terbufos
13071-79-9		  0.4life-time   
Tetrachloroethane, 1,1,1,2-
630-20-6		  70life-time70HRL93Chronic
Tetrachloroethane, 1,1,2,2-
79-34-5		  40cancer2HRL94Cancer
Tetrachloroethylene
127-18-4		5zero10life-time4HRL23Cancer
Tetrachloroterephthalic acid
2136-79-0		  1000001 day   
Tetrahydrofuran
109-99-9		    600HRL18Short-Term
Thallium
7440-28-0		20.571 day0.6HRL94Chronic
Thiamethoxam
153719-23-4		    200HRL18Subchronic
Tin
7440-31-5		    4000HRL94Chronic
Toluene
108-88-3		10001000200010 day70HRL23Short-Term
Toxaphene
8001-35-2		3zero3cancer0.3HRL93Cancer
Tributyl Phosphate
126-73-8		    4HBV25Short-term
Trichloroacetic acid
76-03-9		602020life-time   
Trichlorobenzene, 1,2,4-
120-82-1		707070life-time4HRL13Cancer
Trichlorobenzene, 1,3,5-
108-70-3		  40life-time4RAA12Cancer
Trichloroethane, 1,1,1-
71-55-6		2002004000010 day5000HRL18Chronic
Trichloroethane, 1,1,2-
79-00-5		533life-time3HRL93Chronic
Trichloroethylene
79-01-6		5zero200DWEL0.4HRL15Short-Term
Trichlorofluoromethane
75-69-4		  2000life-time2000HRL93Chronic
Trichlorophenol, 2,4,6-
88-06-2		  10DWEL30HRL93Cancer
Trichlorophenoxyacetic acid, 2,4,5-
93-76-5		  70life-time70HRL93Chronic
2(2,4,5-trichlorophenoxy) propionic acid , (2,4,5-TP or Silvex)
93-72-1		505050life-time50HRLMCLChronic
Trichloropropane,1,2,3-
96-18-4		  100DWEL0.003HRL13Cancer
Trichloro-1,2,2-trifluoroethane, 1,1,2-
76-13-1		    200000HRL93Chronic
Triclocarban
101-20-2		    100RAA13Chronic
Triclosan
3380-34-5		    50HRL15Short-Term
Trifluralin
1582-09-8		  10life-time   
Trimethylbenzene, 1,2,3-
526-73-8		    30HRL23Short-Term
Trimethylbenzene, 1,2,4-
95-63-6		    30HRL23Short-Term
Trimethylbenzene, 1,3,5-
108-67-8		  100001 day30HRL23Short-Term
Trinitrobenzene, 1,3,5-
99-35-4		    0.3HRL93Chronic
Trinitroglycerol
55-63-0		  51 day   
Trinitrotoluene, 2,4,6-
118-96-7		  2life-time   
Tris(2-butoxyethyl) phosphate (TBEP)
78-51-3		    30HRL23Short-Term
Tris(2-chloroethyl) phosphate (TCEP)
115-96-8		    5HRL13Cancer
Tris(1,3-dichloroisopropyl) phosphate  (TDCPP)
13674-87-8		    0.8HRL23Cancer
Uranium
7440-61-1		30zero20DWEL   
Vanadium
7440-62-2		    50HRL94Chronic
Venlafaxine - free base
93413-69-5		    10HRL23Short-Term
Venlafaxine - HCl salt
99300-78-4		    10HRL23Short-Term
Vinyl chloride
75-01-4		2zero2cancer0.2HRL18Cancer
White phosphorous
7723-14-0		  0.1life-time   
Xylenes
1330-20-7		10000100007000DWEL300HRL23Short-Term
Zinc
7440-66-6		  2000life-time2000HRL94Chronic
 

References

The 30-day (Short-term duration) exceedance for the following contaminants are a special concern. Click on the links for more detail: Acrylamide; Benzene; Benzo[a]pyrene; Cadmium; Carbon tetrachloride; cis-1,2-Dichloroethylene; Di(2-ethylhexyl) phthalate; Pentachlorophenol.

1 EPA's incremental cancer risk of 10-4 has been converted to MDH's risk of 10-5

2Treatment technology
3Total for trihalomethanes is 0.08 mg/L
4EPA MCL is for total chromium, using an RfD for Cr VI, MDH guidance is for chromium VI alone
5Secondary drinking water regulations
6 See guidance for Chloroethane
7 Hazard Index MCL for a PFAS mixture containing two or more of GenX, PFBS, PFHxS, and PFNA. See the EPA Fact Sheet Understanding the Final PFAS National Primary Drinking Water Regulation Hazard Index Maximum Contaminant Level for more information.

Abbreviations

EPA - Environmental Protection Agency
DWEL - EPA Drinking Water Equivalent Level
HBV- MDH Health-Based Value
HRL - MDH Health Risk Limit
MCL - Maximum Contaminant Level
MCL HRL - EPA's MCL adopted into MDH HRL rule
RAA - MDH Risk Assessment Advice

Note: The table above and the accompanying spreadsheet are provided for convenience to compare Minnesota guidance with available federal standards or guidance. Though we update the table regularly, MDH does not guarantee that EPA values are current at any given time. Please reference National Primary Drinking Water Regulations for current EPA standards and guidance.

Questions?

Contact the Health Risk Assessment Unit at health.risk@state.mn.us

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Last Updated: 04/24/2025