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Statewide Standards

Chemical CASRN Statewide Standards for a Protected Groundwater Source (mg/l) Statewide Standards for a Non-Protected Groundwater Source (mg/l) Statewide Standards for Soil (mg/kg)
4-chloro-m-cresol 035421-08-0 0.7 3.5 6100
Acenaphthene 000083-32-9 0.42 2.1 3400
Acenaphthylene 000208-96-8 0.21 1 1700
Acetochlor 034256-82-1 0.14 0.7 1200
Acetone 000067-64-1 6.3 32 68000
Acrylamide 000079-06-1 0.00035 0.007 4.9
Acrylonitrile 000107-13-1 0.00032 0.0065 5.7
Alachlor 015972-60-8 0.002 0.040 28
Aldicarb 000116-06-3 0.003 0.035 61
Aldicarb Sulfone 001646-88-4 0.002 0.035 61
Aldicarb Sulfoxide 001646-87-3 0.004 0.035 61
Aldrin 000309-00-2 0.000010 0.00021 0.14
Ametryn 000834-12-8 0.06 0.32 550
Aminobiphenyl, 4- 000092-67-1 0.0000083 0.00017 0.12
Ammonia 007664-41-7 30 170 380000
Ammonium Sulfamate 007773-06-0 2 10 16000
Anthracene 000120-12-7 2.1 10 17000
Antimony 007440-36-0 0.006 0.03 31
Arsenic, Inorganic 007440-38-2 0.01 0.05 1.9
Atrazine 001912-24-9 0.003 1.2 2100
Barium 007440-39-3 2 10 15000
Bentazon 025057-89-0 0.2 1 1800
Benzene 000071-43-2 0.005 0.064 56
Benzidine 000092-87-5 0.00000076 0.000015 0.011
Benzo[a]anthracene 000056-55-3 0.00024 0.0048 3.1
Benzo[a]pyrene 000050-32-8 0.0002 0.0035 2.3
Benzo[b]fluoranthene 000205-99-2 0.00024 0.0048 3.1
Benzo[g,h,i]perylene 000191-24-2 0.021 0.10 170
Benzo[k]fluoranthene 000207-08-9 0.0024 0.048 31
Benzyl alcohol 000100-51-6 0.7 3.5 6100
Beryllium (air) 007440-41-7 N/A N/A N/A
Beryllium (soil/water) 007440-41-7 0.004 0.07 110
Biphenyl 000092-52-4 3.5 18 31000
Bis(2-chloroethyl)ether 000111-44-4 0.00016 0.0032 2.8
Bis(2-chloroisopropyl)ether 000108-60-1 0.3 1.5 3000
Bis(2-ethylhexyl)phthalate 000117-81-7 0.006 0.25 170
Boron And Borates Only 007440-42-8 6 30 16000
Bromacil 000314-40-9 0.07 3.5 6100
Bromate 015541-45-4 0.01 0.05 4.5
Bromochloromethane 000074-97-5 0.09 0.45 760
Bromodichloromethane 000075-27-4 0.08 0.4 50
Bromoform 000075-25-2 0.08 0.44 390
Bromomethane 000074-83-9 0.01 0.05 110
Bromoxynil 001689-84-5 0.14 0.7 1200
Butyl Benzyl Phthalate 000085-68-7 0.14 1.8 1300
Butylate 002008-41-5 0.4 2 3100
Butylbenzene, n- 000104-51-8 0.35 1.8 3800
Cadmium (air) 007440-43-9 N/A N/A N/A
Cadmium (soil) 007440-43-9 N/A N/A 70
Cadmium (water) 007440-43-9 0.005 0.025 N/A
Carbaryl 000063-25-2 0.20 4 2800
Carbazole 000086-74-8 0.0088 0.18 120
Carbofuran 001563-66-2 0.04 0.2 310
Carbon Disulfide 000075-15-0 0.7 3.5 7600
Carbon Tetrachloride 000056-23-5 0.005 0.05 44
Carboxin 005234-68-4 0.7 3.5 6100
Chloral Hydrate 000302-17-0 0.07 3.5 6100
Chloramben 000133-90-4 0.1 0.52 920
Chlordane (also CASRN 57-74-9) 012789-03-6 0.002 0.01 8.1
Chlorimuron, Ethyl- 090982-32-4 0.14 0.7 1200
Chlorine 007782-50-5 4 20 7800
Chlorine Cyanide 000506-77-4 0.35 1.8 3800
Chlorine Dioxide 010049-04-4 0.8 4 2300
Chlorite 007758-19-2 1 5 2300
Chloroaniline, p- 000106-47-8 0.028 0.14 240
Chlorobenzene 000108-90-7 0.1 0.7 1500
Chloroethane (Ethyl chloride) 000075-00-3 2.8 14 30000
Chloroform 000067-66-3 0.08 0.4 100
Chloromethane (air) 000074-87-3 N/A N/A N/A
Chloronaphthalene, Beta- 000091-58-7 0.56 2.8 6100
Chlorophenol, 2- 000095-57-8 0.04 0.2 310
Chlorothalonil 001897-45-6 0.0076 0.15 110
Chlorotoluene, o- 000095-49-8 0.1 0.7 1500
Chlorotoluene, p- 000106-43-4 0.1 0.7 1500
Chlorpyrifos 002921-88-2 0.002 0.010 18
Chromium (III) 016065-83-1 N/A N/A 97000
Chromium (VI) 018540-29-9 0.00065 0.013 12
Chromium VI (for air only) 018540-29-9 N/A N/A N/A
Chromium, total 007440-47-3 0.1 0.5 190
Chrysene 000218-01-9 0.024 0.48 310
Cobalt 007440-48-4 0.0021 0.010 23
Copper 007440-50-8 1.3 6.5 3100
Cumene (Isopropylbenzene) 000098-82-8 0.7 3.5 7600
Cyanazine 021725-46-2 0.001 0.07 120
Cyanide (CN-) 000057-12-5 0.2 1 46
Dacthal (DCPA) 001861-32-1 0.07 0.35 610
Dalapon, sodium salt 000075-99-0 0.2 1 1800
Di(2-ethylhexyl)adipate 000103-23-1 0.4 2.9 3700
Diazinon 000333-41-5 0.001 0.007 12
Dibenz[a,h]anthracene 000053-70-3 0.000024 0.00048 0.31
Dibenzofuran 000132-64-9 0.007 0.035 76
Dibromo-3-chloropropane, 1,2- (DBCP) 000096-12-8 0.0002 0.0029 2.6
Dibromochloroethane 073506-94-2 0.06 0.3 N/A
Dibromochloromethane 000124-48-1 0.08 0.4 150
Dibromoethane, 1,2- 000106-93-4 0.00005 0.0018 1.5
Dibromomethane (Methylene Bromide) 000074-95-3 0.07 0.35 760
Dibutyl Phthalate 000084-74-2 0.7 3.5 6100
Dicamba 001918-00-9 4 20 1800
Dichloro-2-butene-trans-1,4 (b) 000110-57-6 0.0018 0.035 31
Dichlorobenzene, 1,2- 000095-50-1 0.6 3.2 5500
Dichlorobenzene, 1,3- 000541-73-1 0.6 3.2 6800
Dichlorobenzene, 1,4- 000106-46-7 0.075 0.65 760
Dichlorobenzidine, 3,3- 000091-94-1 0.00039 0.0078 5.4
Dichlorodifluoromethane 000075-71-8 1 7 15000
Dichlorodiphenyldichloroethane, p,p- (DDD) 000072-54-8 0.00073 0.015 10
Dichlorodiphenyldichloroethylene, p,p- (DDE) 000072-55-9 0.00051 0.010 7.1
Dichlorodiphenyltrichloroethane, p,p- (DDT) 000050-29-3 0.00051 0.010 8.6
Dichloroethane, 1,1- 000075-34-3 0.14 0.7 1500
Dichloroethane, 1,2- 000107-06-2 0.005 0.038 34
Dichloroethylene, 1,1- 000075-35-4 0.007 0.18 380
Dichloroethylene, 1,2-cis- 000156-59-2 0.07 0.35 150
Dichloroethylene, 1,2-trans- 000156-60-5 0.1 0.7 1500
Dichlorophenol, 2,4- 000120-83-2 0.02 0.10 180
Dichlorophenoxyacetic acid (2,4-D) 000094-75-7 0.07 0.35 690
Dichlorophenoxybutyric acid (2,4-DB) 000094-82-6 0.056 0.28 490
Dichloropropane, 1,2- 000078-87-5 0.005 0.060 53
Dichloropropene, 1,3- 000542-75-6 0.0018 0.035 31
Dieldrin 000060-57-1 0.000011 0.00022 0.15
Diethyl Phthalate 000084-66-2 5.6 28 49000
Diisopropyl Methylphosphonate 001445-75-6 0.6 3 6100
Dimethenamid (Frontier Herbicide) 087674-68-8 0.042 2.1 3700
Dimethenamid-P (Frontier-P) 163515-14-8 0.042 2.1 3700
Dimethoate 000060-51-5 0.0014 0.007 12
Dimethrin 000070-38-2 2 10 18000
Dimethyl methylphosphonate 000756-79-6 0.1 0.7 1200
Dimethylphenol, 2,4- 000105-67-9 0.10 0.7 1200
Dinitrobenzene, m- 000099-65-0 0.001 0.005 6.1
Dinitrophenol, 2,4- 000051-28-5 0.014 0.07 120
Dinitrotoluene, 2,4- 000121-14-2 0.00025 0.005 3.5
Dinitrotoluene, 2,6 000606-20-2 0.00026 0.0051 3.6
Dinoseb 000088-85-7 0.007 0.035 61
Dioxane, 1,4- 000123-91-1 0.2 1 31
Dioxin (2,3,7,8-tetrachlorodibenzo-p) 001746-01-6 0.00000003 0.00000015 0.000016
Diphenamid 000957-51-7 0.2 1 1800
Diphenylamine 000122-39-4 0.18 0.88 1500
Diquat 000085-00-7 0.02 0.1 130
Disulfoton 000298-04-4 0.0007 0.0035 2.4
Dithiane, 1,4- 000505-29-3 0.08 0.4 610
Diuron 000330-54-1 0.0097 0.19 130
Endosulfan 000115-29-7 0.042 0.21 370
Endosulfan I (c) 000959-98-8 0.042 0.21 370
Endosulfan II (c) 033213-65-9 0.042 0.21 370
Endothall 000145-73-3 0.1 0.7 1200
Endrin 000072-20-8 0.002 0.010 18
Endrin aldehyde (d) 007421-93-4 0.0021 0.010 18
Epichlorohydrin 000106-89-8 0.018 0.35 310
Ethanol (Ethyl alcohol) 000064-17-5 301 1505 3300000
Ethyl Dipropylthiocarbamate s- (EPTC) 759-94-4 0.18 0.88 1700
Ethylbenzene 000100-41-4 0.7 3.5 7600
Ethylene Glycol 000107-21-1 14 70 120000
Ethylene Thiourea 000096-45-7 0.0030 0.060 42
Fenamiphos 022224-92-6 0.0007 0.0088 15
Fluometuron 002164-17-2 0.09 0.46 790
Fluoranthene 000206-44-0 0.28 1.4 2300
Fluorene 000086-73-7 0.28 1.4 2300
Fluoride 007681-49-4 4 20 4700
Fonofos 000944-22-9 0.01 0.07 120
Formaldehyde (air) 000050-00-0 N/A N/A N/A
Formaldehyde (soil & water) 000050-00-0 1 7 15000
Glyphosate (Roundup) 001071-83-6 0.7 3.5 6100
Heptachlor 000076-44-8 0.0004 0.002 0.54
Heptachlor Epoxide 001024-57-3 0.0002 0.001 0.27
Hexachlorobenzene 000118-74-1 0.001 0.005 1.5
Hexachlorobutadiene 000087-68-3 0.001 0.045 40
Hexachlorocyclohexane, Alpha- 000319-84-6 0.000028 0.00056 0.39
Hexachlorocyclohexane, Beta- 000319-85-7 0.000042 0.0019 1.3
Hexachlorocyclohexane, Delta (a) 000319-86-8 0.0021 0.010 21
Hexachlorocyclohexane, Gamma- (Lindane) 000058-89-9 0.0002 0.0032 2.6
Hexachlorocyclopentadiene 000077-47-4 0.05 0.25 460
Hexachloroethane 000067-72-1 0.001 0.088 77
Hexafluoropropylene oxide - dimer acid (GenX, HFPO-DA) 013252-13-6 0.00001 0.00010 0.18
Hexane, N- 000110-54-3 0.42 2.1 4600
Hexazinone 051235-04-2 0.4 2 2000
HMX (1,3,5,7-Tetranitro-1,3,5,7-tetrazocane) 002691-41-0 0.4 2 3100
Imazaquin 081335-37-7 1.8 8.8 15000
Imazethapyr acid (Pursuit) 081335-77-5 1.8 8.8 15000
Indeno[1,2,3-cd]pyrene 000193-39-5 0.00024 0.0048 3.1
Isobutyl alcohol 000078-83-1 2.1 10 23000
Isophorone 000078-59-1 0.1 3.7 2600
Isopropyl methylphosphonate 001832-54-8 0.7 3.5 6100
Kerb (Pronamide) 023950-58-5 0.005 0.10 69
Lactofen 077501-63-4 0.014 0.07 120
Lead and Compounds 007439-92-1 0.015 0.075 400
Lithium 007439-93-2 0.014 0.07 160
Malathion 000121-75-5 0.5 2.5 1200
Maleic Hydrazide 000123-33-1 4 20 31000
Manganese 007439-96-5 0.3 4.9 10000
Mercury 007439-97-6 0.002 0.010 23
Methomyl 016752-77-5 0.2 1 1500
Methoxychlor 000072-43-5 0.04 0.2 310
Methyl Ethyl Ketone 000078-93-3 4 21 46000
Methyl Isobutyl Ketone 000108-10-1 0.56 2.8 6100
Methyl methanesulfonate 000066-27-3 0.0018 0.035 25
Methyl Parathion 000298-00-0 0.001 0.0088 15
Methyl tert-Butyl Ether (MTBE) 001634-04-4 0.21 1 2300
Methyl-4-chlorophenol, 3- 000059-50-7 0.7 3.5 6100
Methyl-4-chlorophenoxyacetic acid (MCP) 000094-74-6 0.03 0.15 31
Methylene Chloride (Dichloromethane) 000075-09-2 0.005 1.8 1500
Methylnaphthalene, 2 000091-57-6 0.028 0.14 230
Methylphenol, 2 (o-cresol) 000095-48-7 0.035 1.8 3100
Methylphenol, 4 (p-cresol) 000106-44-5 0.07 3.5 6100
Methylphenol, Total (total cresol) 1319-77-3 0.07 3.5 6100
Metolachlor 051218-45-2 0.7 5.2 9200
Metribuzin 021087-64-9 0.07 0.88 1500
Molybdenum 007439-98-7 0.04 0.2 390
Monochloramine (measured as free chlorine) 010599-90-3 4 20 7600
Naphthalene 000091-20-3 0.1 0.7 1100
Naphthylamine, 2- 000091-59-8 0.000097 0.0019 1.3
Nickel 007440-02-0 0.1 0.7 1500
Nitrate (measured as Nitrogen) 014797-55-8 10 56 120000
Nitrite (measured as Nitrogen) 014797-65-0 1 5 7800
Nitrobenzene 000098-95-3 0.014 0.07 120
Nitroguanidine 000556-88-7 0.7 3.5 6100
Nitrophenol, p- 000100-02-7 0.06 0.3 490
Nitrosdimethylamine-N 000062-75-9 0.0000034 0.000069 0.048
Nitroso-di-N-butylamine, N- 000924-16-3 0.000032 0.00065 0.45
Nitrosodiphenylamine, N- 000086-30-6 0.036 0.71 500
Nitrosomethylethylamine, N- 010595-95-6 0.0000080 0.00016 0.11
Nitrosopyrrolidine, N- 000930-55-2 0.000083 0.0017 1.2
Octyl Phthalate, di-N- 000117-84-0 0.14 0.7 1200
Oxamyl 023135-22-0 0.2 1 1500
Paraquat 001910-42-5 0.03 0.16 270
Pendimethalin 040487-42-1 0.28 1.4 2400
Pentachlorophenol 000087-86-5 0.001 0.0088 4.5
Perchlorate 007790-98-9 0.015 0.075 55
Perfluorobutane Sulfonate 45187-15-3 0.002 0.010 18
Perfluorobutane Sulfonic Acid (PFBS) 000375-73-5 0.002 0.010 18
Perfluorobutanoic Acid (PFBA) 000375-22-4 0.007 0.035 61
Perfluorodecanoic Acid (PFDA) 000335-76-2 0.000000014 0.00000007 0.00016
Perfluorohexanesulfonate (PFHxS) 000355-46-4 0.00001 0.0007 1.6
Perfluorononanoic acid (PFNA) 000375-95-1 0.00001 0.00010 0.18
Perfluorooctanesulfonic Acid (PFOS) 001763-23-1 0.000004 0.00002 0.00048
Perfluorooctanoic Acid (PFOA) 000335-67-1 0.000004 0.05 35
Perfluourohexanoic Acid (PFHxA) 000307-24-4 0.0035 0.018 39
Permethrin 052645-53-1 0.35 1.8 3100
Phenanthrene 000085-01-8 0.21 1 1700
Phenmedipham 013684-63-4 1.8 8.8 15000
Phenol 000108-95-2 2 10 18000
Phenol, methylcarbamate (Baygon) 000114-26-1 0.003 0.14 240
Phorate 000298-02-2 0.0014 0.007 12
Phosphorus, Total 014265-44-2 24 119 210000
Picloram 001918-02-1 0.5 2.5 4300
Polychlorinated Biphenyls (PCBs) Total 001336-36-3 0.0005 0.0025 1.1
Prometon 001610-18-0 0.4 2 920
Propachlor 001918-16-7 0.005 0.10 69
Propazine 000139-40-2 0.01 0.7 1200
Propham 000122-42-9 0.1 0.7 1200
Propylbenzene, N- 000103-65-1 3.4 17 7600
Propylene Glycol 00057-55-5 140 700 1200000
Pyrene 000129-00-0 0.21 1 1700
RDX (1,3,5-Trinitro-1,3,5-triazinane) 000121-82-4 0.002 0.044 30
Selenium 007782-49-2 0.05 0.25 390
Sethoxydim 074051-80-2 0.63 3.2 5500
Silver 007440-22-4 0.1 0.5 370
Silver Cyanide 000506-64-9 0.7 3.5 7800
Simazine 000122-34-9 0.004 0.18 310
Strontium 007440-24-6 4 21 47000
Styrene 000100-42-5 0.1 7 15000
Tebuthiuron 034014-18-1 0.5 2.5 4300
TEH Diesel 068334-30-5 2.2 44 28000
TEH Waste Oil 070514-12-4 0.73 15 9400
Terbacil 005902-51-2 0.09 0.46 790
Terbufos 013071-79-9 0.0004 0.002 3.1
Tetrachlorobenzene, 1,2,4,5- 000095-94-3 0.0021 0.010 23
Tetrachloroethane, 1,1,1,2- 000630-20-6 0.07 0.35 230
Tetrachloroethane, 1,1,2,2- 000079-34-5 0.0003 0.018 15
Tetrachloroethylene 000127-18-4 0.005 1.7 1500
Thallium 007440-28-0 0.002 0.01 0.78
Tin 007440-31-5 4.2 21 47000
Toluene 000108-88-3 1 5 6100
Toluidine, o- 000095-53-4 0.011 0.22 150
Toxaphene 008001-35-2 0.003 0.015 2.2
Trichloro-1,2,2-trifluoroethane, 1,1,2- (Freon 113) 000076-13-1 210 1050 2300000
Trichlorobenzene, 1,2,4- 000120-82-1 0.07 0.35 760
Trichloroethane, 1,1,1- 000071-55-6 0.2 70 150000
Trichloroethane, 1,1,2- 000079-00-5 0.005 0.061 54
Trichloroethylene 000079-01-6 0.005 0.076 67
Trichlorofluoromethane 000075-69-4 2 10 23000
Trichlorophenol, 2,4,5- 000095-95-4 0.7 3.5 6100
Trichlorophenol, 2,4,6- 000088-06-2 0.016 0.32 220
Trichlorophenoxyacetic acid (2,4,5-T) 000093-76-5 0.07 0.35 610
Trichlorophenoxypropionic acid (2,4,5-TP) 000093-72-1 0.05 0.28 490
Trichloropropane, 1,2,3- 000096-18-4 0.0000058 0.00012 0.10
Trifluralin 001582-09-8 0.01 0.45 320
Trimethylbenzene, 1,2,4- 000095-63-6 0.07 0.35 760
Trimethylbenzene, 1,3,5- 000108-67-8 0.07 0.35 760
Trinitroglycerol (Nitroglycerin) 000055-63-0 0.005 0.19 130
Trinitrotoluene, 2,4,6- (TNT) 000118-96-7 0.002 0.12 81
Vanadium 007440-62-2 0.035 0.18 350
Vinyl Chloride 000075-01-4 0.002 0.01 2.1
White Phosphorus 007723-14-0 0.0001 0.0007 1.6
Xylene, Mixture 001330-20-7 10 50 15000
Zinc 007440-66-6 2 10 23000
IOWA DEPARTMENT OF NATURAL RESOURCES
Our Mission
To conserve and enhance our natural resources in cooperation with individuals and organizations to improve the quality of life in Iowa and ensure a legacy for future generations.
Version: 3.3.1.17708
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