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Office of Pesticide Programs' Aquatic Life Benchmarks

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Introduction

The aquatic life benchmarks (for freshwater species) provided in the table below are based on toxicity values reviewed by EPA and used in the Agency's most recent risk assessments developed as part of the decision-making process for pesticide registration. The Office of Pesticide Programs (OPP) in EPA relies on studies required under the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA), as specified at 40 CFR Part 158, as well as a wide range of environmental laboratory and field studies available in the public scientific literature to assess environmental risk. Each Aquatic Life Benchmark is based on the most sensitive, scientifically acceptable toxicity endpoint available to EPA for a given taxon (for example, freshwater fish) of all scientifically acceptable toxicity data available to EPA. EPA's goal is to add to these benchmarks annually.

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Relationship to Ambient Water Quality Criteria

Both OPP and EPA's Office of Water (OW) have responsibilities for evaluating aquatic toxicity data to assess the ecological effects of chemicals in surface water. Effects assessments under both program offices are developed with high quality data pursuant to parallel but somewhat different rigorously peer-reviewed assessment methods.

The table below provides aquatic toxicity benchmarks, a reference for the most recent risk assessment conducted by OPP for each pesticide, and ambient water quality criteria, if available.

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Use of Aquatic Life Benchmarks

EPA worked initially with the USGS to identify aquatic ecotoxicity benchmarks values from risk assessments developed by EPA for individual pesticides during the recently completed re-registration program. The Overview Document and ecological risk assessments developed for individual pesticides provide useful information for understanding how these ecotoxicity benchmarks were developed and the uncertainties associated with each benchmark. Comparing a measured concentration of a pesticide in water with an aquatic life benchmark can be helpful in interpreting monitoring data, and to identify and prioritize sites and pesticides that may require further investigation.

These aquatic benchmarks are extracted from the most recent publically available OPP risk assessment for the pesticide and are based on the most sensitive aquatic toxicity data of the distribution for each taxa. Benchmarks, developed for baseline risk assessments, are estimates of the concentrations below which pesticides are not expected to harm aquatic life. OPP may further refine a risk assessment based on the full distribution of toxicity data for a given species, using point estimates, species sensitivity distribution approaches, or probabilistic methods.

OPP and OW are actively working together to harmonize the high quality, peer-reviewed scientific approaches that now underlie both programs. A harmonized approach will result in consistent tools and approaches for all stakeholder communities to use in ensuring the protection of aquatic ecosystems.

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OPP Aquatic Life Benchmarks (µg / L)
(freshwater)
Pesticide Year Updated CAS number Fish Invertebrates Nonvascular Plants Vascular Plants Office of Water
Aquatic Life Criteria
Acute1 Chronic2 Acute3 Chronic4 Acute5 Acute6 Maximum
Concentration
(CMC)
Continuous
Concentration
(CCC)
2,4-D acids and salts 9 94-75-7 12075142001250016050388013.1
2,4-D esters . 13079.2110020066330
2,4-DB 9 94-82-6 1000 7500 932
2,4-DB-DMAS 2758-42-1 1567 10150
3, 6-dichlorosalicylic acid (DCSA) 3401-80-7 > 50000 44500 138000> 73000
3-chloroacrylic acid degradate of Telone . 34750 27500 430220
3-chloroallyl alcohol degradate of Telone . 493 1150 329001694
3-Trifluoromethyl-4-Nitrophenol (TFM) 88-30-2 300 1900 1200
Abamectin 201371751-41-2 1.60.520.170.006> 1000003900
Acephate 7 30560-19-1 4160005760550150> 50000
Acequinocyl 57960-19-7 335005201.20.98960
Acetamiprid 2013 > 500001920010.52.1> 1000> 1000
Acetochlor 34256-82-1 190130410022.11.433.4
Acetochlor degradate ethanesulfonic acid (ESA) 187022-11-3 > 90000 > 62500 9900
Acifluorfen sodium 62476-59-9 8500< 150014050 > 265378
Acrolein 8 107-02-8 711.4> 15.57.12872
Alachlor 15972-60-8 90018712501101.642.3
Alachlor ethane sulfonic acid . > 52000 > 52000
Alachlor oxanilic acid . > 500000 > 47500
Aldicarb 7 116-06-3 260.46101> 5000
Aldicarb sulfone 1646-88-4 21000 140
Aldicarb sulfoxide 1646-87-3 3570 21.5
Aliphatic Oils- 100 Paraffine Oil 64742-54-7 > 50000 205
Aliphatic Oils- 70 Orchard Spray 64742-55-8 1200
Aliphatic Oils- 90 Neutral Oil 8012-95-1 > 50000 10
Aliphatic Oils- GB-1111 . > 60000 50
Aliphatic Oils- N65DW . > 250000000
Aliphatic Oils- VHVI-4 . > 38000 < 450
Allethrin 584-79-2 9.5 1.05
Ametryn 834-12-8 1800700140002403.6710
Aminocyclopyrachlor acid 2013858956-08-8 > 600001100019850< 3707400> 122000
Aminocyclopyrachlor ester 2013 6500 9950
Aminopyralid 2013150114-71-9 > 500001360> 4930010200018000> 88000
Amitraz 33089-61-1 170> 1.517.51.1
Amitraz BTS 27271 33089-61-1 14200 1295
Amitraz BTS 27919 33089-61-1 33100 > 50000
Antimycin A 1397-94-0 0.0045 0.004
Asulam sodium 2302-17-2 > 87500 13550 180140
Atrazine 1912-24-9 26506536060137
Azinphos methyl 7 86-50-0 0.180.0550.080.036
Azoxystrobin 131860-33-8 23514713044493400
Benfluralin 1861-40-1 34.851.9109015.5> 100
Bensulide 8 741-58-2 360374290 1500
Bentazon 25057-89-0 > 50000 > 50000 45005350
Bentazon, sodium salt 50723-80-3 > 50000 31150 605350
Bifenthrin 82657-04-3 0.0750.040.80.0013
Bioallethrin 28057-48-9 4.7
Bispyrabac sodium 2013125401-92-5 > 510009200> 4960011000025012
Boric Acid Salts 10043-35-3 > 400000 66500
Boscalid 188425-85-6 1350116> 53329813403900
Bromacil 314-40-9 1800030006050082006.845
Bromoxynil heptanoate 56634-95-8 14.5 15.5 80219
Bromoxynil octanoate 1689-99-2 11.5185.52.551
Bromoxynil phenol 1689-84-5 1050 9610
Butylate 8 2008-41-5 105 5950
Captan 8 133-06-2 13.116.54200560320> 12700
Carbaryl 7 63-25-2 11060.850.56601500
Carbendazim 201310605-21-7
Carbofuran 1563-66-2 445.71.1150.75
Carboxin 5234-68-4 600 42200 370670
Chlorantraniliprole 500008-45-7 > 6001104.94.518002000
Chlorfenapyr 122453-73-0 3.723.682.9153.57
Chlorfenapyr Metabolite CL303094 . 280
Chlorfenapyr Metabolite CL303195 . 850
Chlorfenapyr Metabolite CL303267 122454-23-3 35 53.5
Chlorfenapyr Metabolite CL312094 122453-73-0 > 464
Chlorfenapyr Metabolite CL325195 122453-73-0 1050
Chlorflurenol methyl ester 2536-31-4
Chlormequat chloride 999-81-5 > 50000 84505000> 2070002800
Chloropicrin 76-06-2 < 8.49 < 35.5
Chlorothalonil 1897-45-6 5.2531.80.66.8630
Chlorothalonil degradate (SDS-3701) . 4600 13000 33700
Chlorpyrifos 2921-88-2 0.90.570.050.04140 0.083
Chlorpyrifos-methyl 5598-13-0 7 0.085
Chlorsulfuron 64902-72-3 > 12500032000> 185000200000.0550.35
Clethodim 99129-21-2 7500 2850 110001100
Clofentezine 74115-24-5 > 7.36> 4026.2
Clomazone 81777-89-1 14503502700220016730200
Clopyralid 1702-17-6 984000 56500
Clothianidin 2013210880-92-5 > 507509700111.164000121000
Copper 7440-50-8 15.79.012.051.113.12300
Coumafos 8 56-72-4 14011.70.0370.037
Cyanamide 420-04-2 23000< 50716501006502330
Cyazofamid 2013120116-88-3 > 53.590.1> 650< 87 > 1220
Cycloate 1134-23-2 2250 1300
Cyfluthrin 201368359-37-5 0.0340.010.01250.0074> 181
Cyfluthrin, beta 201368359-37-5 0.034 0.145
Cyhexatin 13121-70-5
Cypermethrin 52315-07-8 0.1950.140.210.069
Cyphenothrin 39515-40-7 0.17 0.215
Cyprodinil 121552-61-2 12052301682250
Cyromazine 66215-27-8 > 4485014000> 46400310
Dacthal (DCPA) 1861-32-1 15000 13500 > 11000> 11000
Daminozide 1596-84-5 224000 35500 > 99800
Dazomet (degradate methyl isothiocyanate (MITC)) 533-74-4 25.6 27.525254590
Deltamethrin 52918-63-5 0.290.0170.0550.0041
Diazinon 8 333-41-5 45< 0.550.1050.173700 0.17
Dicamba acid 9 1918-00-9 14000 > 50000 61> 3250
Dicamba, dimethylamine salt 2300-66-5 488500 781500
Dicamba, sodium salt 1982-69-0 253600 17300
Dichlobenil 1194-65-6 2465< 3301850560100030
Dichloroprop (2,4-DP) 2013120-36-5
Dichlorvos (DDVP) 62-73-7 91.55.20.0350.005814000
Dicofol 115-32-2 26.54.47019> 5000
Dicrotophos 141-66-2 3150 6.350.99
Difenacoum 56073-07-5 32 305 320
Difenoconazole 2013119446-68-3 4058.73855.6981900
Difenzoquat methyl sulfate 43222-48-6 23250 1265 630120
Difethialone 104653-34-1 25.5 2.2
Diflubenzuron 35367-38-5 645001000.00140.00025200190
Dimethenamid 87674-68-8 315030060001020148.9
Dimethoate 7 60-51-5 310043021.50.584
Dimethomorph 2013110488-70-5 750< 34.1 1102900022000
Dinotefuran 2013165252-70-0 > 49550> 6360> 484150> 95300> 97600> 110000
Dinotefuran degradate dn phosphate 2013 > 55300 > 100400
Dinotefuran degradate MNG 2013 > 98700
Diquat Dibromide 85-00-7 7400122385< 369.40.75
Disulfoton 7 298-04-4 19.541.950.01
Disulfoton sulfone 2497-06-5 > 4600 17.50.14
Disulfoton sulfoxide 2497-07-6 30000 321.53
Dithiopyr 201397886-45-8
Diuron 8 330-54-1 20026.4802002.415 0.056
Dodine 2439-10-3 285998.97.30.95
Dyes + Acids . > 48000> 96000> 48500
Endosulfan 115-29-7 0.050.110.30.01428 0.22
Endosulfan sulfate 1031-07-8 1.9 150
Endothall (acid) 145-73-3 24500130046000< 2200
Endothall (dipotassium salt) 2164-07-0 4576179031900 610
Endothall (N,N-dimethylalkylamine salt) 66330-88-9 7.55662.32.3740
EPN 20132104-64-5
EPTC (S-Ethyl dipropylthiocarbamate) 759-94-4 7000 324581014005600
Esbiol (s-bioallethrin) 28434-00-6 3.95
Esbiothrin 84030-86-4 4.45
Esfenvalerate 7 66230-04-4 0.0350.0350.0250.017
Ethalfluralin 55283-68-6 160.4302425
Ethephon 16672-87-0 44000 1585017000235002500
Ethion 2013563-12-2
Ethofumesate 201326225-79-6 87502560147000300> 2760
Ethoprop 13194-48-4 15024220.88400
Etofenprox 80844-07-1 1.35230.40.17> 18.8> 26
Etoxazole 2013153233-91-1 > 150153.550.13
ETU (common degradate of Mancozeb and Maneb) . > 251000373201345002
Fenamidone 2013161326-34-7 370< 8.624.512.570> 880
Fenamiphos 22224-92-6 4.753.80.950.12
Fenarimol 60168-88-9 4501803400113100
Fenbutatin- oxide 13356-08-6 0.850.3115.516 0.083
Fenitrothion 122-14-5 860461.150.087
Fenoxaprop-p-ethyl 71283-80-2 15522> 529 430> 3000
Fenoxycarb 72490-01-8 800482000.0016
Fenpropathrin 39515-41-8 1.10.0910.2650.064
Fenpyroximate 2013134098-61-6 0.220.110.80.561.9> 190
Fenthion 55-38-9 4157.52.60.013400> 2800
Fipronil 120068-37-3 41.56.60.110.011140> 100
Fipronil degradate MB45950 . 41.56.61.0650.11140> 100
Fipronil degradate MB46136 . 12.50.670.360.037140> 100
Fipronil degradate MB46513 . 100.5910010.3140> 100
Florasulam 145701-23-1 > 50000119000> 146000389003.451.18
Fluazinam 79622-59-6 180.6990689200
Flubendiamide 272451-65-7 > 32.5560.5> 27.441.5> 69.3> 54.6
Fludioxonil 131341-86-1 23519450< 1970> 1000
Flumetsulam 98967-40-9 > 1500001970001250001110003.213.1
Flumiclorac-pentyl 87546-18-7 550 > 19000
Flumioxazin 2013103361-09-7 11507.72750280.830.49
Fluometuron 2164-17-2 320 110 30220
Fluopicolide 2013239110-15-7 174.5151> 85019093> 3200
Fluridone 59756-60-4 2800480650
Fluroxypyr 69377-81-7 7150 > 50000 > 100000
Fluroxypyr MHE 81406-37-3 6600 > 54.560290> 2300
Flurprimidol 56425-91-3 86009445900296084010400
Flutolanil 66332-96-5 1250233> 340053080108010
Flutriafol 201376674-21-0 16500480033550310460780
Fomesafen Sodium 108731-70-0 6300094001880005000092210
Formetanate HCl 23422-53-9 1350480450.5
Fosamine Ammonium 25954-13-6 188500 762000 > 15000> 21000
Fosthiazate 98886-44-3 55500232013061> 4500
Gamma-cyhalothrin 76703-62-3 0.0145 0.00024 > 2850
Glufosinate ammonium 77182-82-2 > 160000 3340003200078001470
Glyphosate 8 1071-83-6 21500180026600499001210011900
Glyphosate degradate aminomethyl phosphoric acid (AMPA) 1066-51-9 249500 341500
Glyphosate isopropylamine salt 38641-94-0 34700
Hexaflumuron 86479-06-3 > 127.8 0.0555
Hexazinone 51235-04-2 137000170007580020000737.4
Hexythiazox 78587-05-0 265 3706.1
Hydramethylnon 67485-29-4 45 570
Hymexazol 10004-44-1 > 50000 15400 409008800
Imazamox 114311-32-9 > 59500 > 61000 > 4011
Imazapic acid 2013104098-48-8 > 5000096000> 5000096000> 44.16.1
Imazapic ammonium 2013
Imazapyr 8 81334-34-1 > 5000043100> 50000971001220024
Imazethapyr (ammonium salt) 201381335-77-5 120000 500000 59200
Imazethapyr CL266858 2013
Imazethapyr CL271197 2013
Imazethapyr CL290084 2013
Imazosulfuron 2013122548-33-8 > 345002900> 455008402061.46
Imazosulfuron degradate (IPSN) 2013 11000 > 113000
Imidacloprid 138261-41-3 > 41500120034.51.05> 10000
Indoxacarb 2013173584-44-6 145150300751220> 84
Indoxacarb degradate (IN-JT333) 2013 125.5> 14.53.6
indoxacarb degradate (IN-MP819) 2013 > 18484.9328
Indoxacarb degradate (KN127) 2013 197
Iodomethane 74-88-4 665 285
Ipconazole 125225-28-7 7650.18850
Iprodione 8 36734-19-7 155026012017050> 12640
Isoxaben 82558-50-7 > 550400> 650690> 1400
Isoxaflutole 141112-29-0 > 850 > 750 1104.9
Isoxaflutole - rpa202248 (degradate) . > 15300 > 29800 500075
Kresoxim methyl 143390-89-0 95871665529.2> 305
Lactofen 77501-63-4 2301.42425 0.990.6
Lambda-cyhalothrin 91465-08-6 0.1050.0310.00350.002> 310
Limonene 138-86-3 40000 19500
Lindane (gamma HCH) 58-89-9 0.852.90.554 0.95
Linuron 7 330-55-2 15005.58600.0913.72.5
Malathion 2013121-75-5 16.58.60.2950.0352400> 9630
Mancozeb 8018-01-7 230 290 47
Mandipropamid 374726-62-2 2203550 > 2500> 7900
Maneb 12427-38-2 21 60 13.4
MCPA acid 9 94-74-6 300170
MCPA DMAS 2039-46-5 48000120004100011000160130
MCPA EHE 29450-45-1 380 90 17020
MCPA sodium salt 3653-48-3 > 34000 > 92000
MCPB sodium salt 6062-26-6 1950 25000 380210
Mecoprop (MCPP)-P acid 8 16484-77-8 > 4550050800
Mecoprop (MCPP)-P DMAS 66423-09-4 > 46500 141300
Mefenoxam 70630-17-0 > 60500 20950100 77000
Mesotrione 104206-82-8  > 600001100042000018000019009.8
Metalaxyl 57837-19-1 6500091001400010014000092000
Metaldehyde 108-62-3 34500 > 38830
Metam sodium (degradate methyl isothiocyanate (MITC)) 137-42-8 25.6 27.525254590
Methamidophos 7 10265-92-6 1250048.9134.5> 50000
Methanearsonic Acid, disodium salt DSMA 144-21-8 > 56000 76500 150072700
Methanearsonic Acid, sodium salt MSMA 2163-80-6 6650 38750 280053000
Methidathion 8 950-37-8 1.16.31.50.66
Methiocarb 2032-65-7 218503.50.1
Methomyl 7 16752-77-5 160122.50.7
Methoprene 40596-69-8 3804816551
Methoxychlor 72-43-5 7.5 0.7
Methyl bromide 74-83-9 19501001300 2200
Methyl paraoxon 950-35-6 1.151
Methyl parathion 298-00-0 925< 100.4850.251500018000
Metribuzin 21087-64-9 210003000210012908.7130
Metsulfuron 74223-64-6 > 750004500> 75000 310.36
Mevinphos 20137786-34-7
Molinate 8 2212-67-1 1053901703402203300
Myclobutanil 88671-89-0 12009805500 830
Nabam 2013142-59-6
Naled 300-76-5 462.90.070.04525> 1800
Napropamide 15299-99-7 32001100715011003400
Niclosamide 50-65-7 15 175641
Nicosulfuron 2013111991-09-4 > 500000 > 50000043000
Norflurazon 27314-13-2 4050770> 750010009.758.2
Novaluron 2013116714-46-6 > 4906.160.0750.033549> 75.4
Orthosulfamuron 213464-77-8 > 610006100> 486506500800.7
Oryzalin 19044-88-3 144022075035842> 15.4
Oxadiazon 19666-30-9 4400.881090305.241
Oxamyl 8 23135-22-0 2100770902712030000
Oxydemeton methyl 7 301-12-2 36559546> 100000
Oxyfluorfen 42874-03-3 101.51.340130.290.35
Oxypyrimidine (diazinon degradate) 4562-27-0 > 50500 > 51000 > 109000
Oxytetracycline (hydrochloride salt) 2058-46-0 > 47450 > 51000
Paclobutrazol 76738-62-0 11800 8000 41500
Paraquat dichloride 1910-42-5 6000< 369600< 36.90.39671
Pebulate 1114-71-2 3150 3315 2301800
Pendimethalin 40487-42-1 696.314014.55.212.5
Penoxsulam 2013219714-96-2 > 5100010200> 491502950923
Pentachloroaniline (PCA) 527-20-8 28 150
Pentachlorobenzene (PCB) 608-93-5 70 80
Pentachloronitrobenzene (PCNB) 82-68-8 501338518
Pentachlorophenol (PCP) 87-86-5 47.5 25
Penthiopyrad 2013183675-82-3 1451001265.54711200> 1205
Permethrin 11 52645-53-1 0.3950.05150.01060.001468
Phorate 298-02-2 1.1750.340.30.21> 1300
Phosmet 732-11-6 353.210.834> 1800
Picloram Acid 1918-02-1 2750 17200 36900
Picloram Potassium Salt 2545-60-0 65005503415011800
Picloram TIPA Salt 6753-47-5 187500
Pinoxaden 243973-20-8 10000 12004300
pinoxaden (NOA 447204) . > 60000 > 60000 95600> 93500
pinoxaden (NOA 497854) . > 51500> 960> 505005800> 10000010000
Piperalin 3478-94-2 385 945
Piperonyl Butoxide 51-03-6 9504025530
Pirimicarb 23103-98-2 14500 9.5
Pirimiphos Methyl 29232-93-7 20218055 1200
Polybutene 9003-29-6
Prallethrin 23031-36-9 633.10.65
Prodiamine 201329091-21-2 > 6.5 > 6.51.5
Profenofos 41198-08-7 7.0520.4650.2
Prometon 8 1610-18-0 6000950012850350098624
Prometryn 7287-19-6 145062092951000111.8
Propachlor 1918-16-7 85 395 13.5
Propanil 709-98-8 11509.16008616110
Propargite 2312-35-8 591637966.275000
Propazine 139-40-2 720> 26604724.8100
Propetamphos 31218-83-4 94 1.65
Propiconazole 60207-90-1 42595650260214828
Propionic Acid 79-09-4 25500 11350
Propoxur 114-26-1 1850 5.5
Propyzamide 7 23950-58-5 360007700> 2800600> 40001180
Pyraclostrobin 175013-18-0 3.12.357.8541.51720
Pyraflufen-ethyl 2013129630-19-9 > 42.53.4> 41811.516
Pyrasulfotole 2013365400-11-9 > 48000580> 4790012800830028
Pyrethrin 8003-34-7 2.551.95.80.86
Pyridaben 96489-71-3 0.360.0870.2650.044> 665> 16.2
Pyridalyl 179101-81-6 250492.14.4
Pyrimethanil 53112-28-0 5050201500100018007800
Pyriproxyfen 95737-68-1 > 162.54.32000.01556> 180
Pyroxsulam 422556-08-9 > 4350010100> 49500104001112.57
Quinclorac 84087-01-4 158001600014900110000> 500> 500
Quizalofop ethyl 76578-14-8 230111060 > 1770> 82.8
Resmethrin 10453-86-8 0.140.321.55
Rimsulfuron 122931-48-0 > 195000 > 180000 > 2911.6
Rotenone 8 83-79-4 0.971.011.851.25
Saflufenacil 2013372137-35-4 > 54000997> 4900013304287
Sethoxydim 74051-80-2 85000 39050 > 281
Siduron 1982-49-6 405015> 68506212212
Simazine 122-34-9 3200960500200036140
S-Metolachlor 87392-12-9 1600305501821
S-Metolachlor degradate ESA . 24000 > 54000 > 99450> 95100
S-Metolachlor degradate OA . > 46550 7700 57100> 95100
Sodium chlorate 7775-09-9 > 500000 46000050000013300043000
Sodium cyanide 143-33-9 94
Sodium fluoroacetate 62-74-8 27000 175000
Sodium Tetrathiocarbonate 7345-69-9 3350 3300 17000
Sodium tetrathiocarbonate degradate carbon disulfide 75-15-0 435 430 520
Spinosad 168316-95-8 297049870000.69010600
Spirodiclofen 2013148477-71-8 > 17.551.95> 22.7511.1> 60
Spiromesifen 2013283594-90-1 8.40.49> 46.150.25> 94> 101.3
Spiromesifen-enol 2013 > 510009200> 50500
Spirotetramat 203313-25-1 70553433010040504490
spirotetramat enol degradate . > 50000 37450 > 1000005400
spirotetramat keto hydroxy degradate . > 50000
Sulfentrazone 122836-35-5 469002950302002001.828.8
Sulfometuron methyl 74222-97-2 > 74000 > 75000970004.60.48
Sulfosulfuron 141776-32-1 > 47500100000> 480001020004001
Sumithrin 26002-80-2 7.91.12.20.47
Tau-Fluvalinate 102851-06-9 0.175 0.470.1
Tebuconazole 107534-96-3 11351214401201450151.5
Tebufenozide 112410-23-8 1500< 4819004.3> 740
Tebupirimphos 96182-53-5 44.51300.0390.0116308800
Tebuthiuron 34014-18-1 5300093001485002180050135
Tefluthrin 201379538-32-2 0.030.0040.0350.008
Telone 542-75-6 540 4570790020000
Tembotrione 2013335104-84-2 > 500006042445051003105.2
Temephos 3383-96-8 1745 5
Terbacil 5902-51-2 2310012003250064011140
Terbufos 8 13071-79-9 0.3850.640.10.03
Terbuthylazine 5915-41-3 1700 25450
Tetrachlorvinphos 961-11-5 265 0.95 510
Tetraconazole 2013112281-77-3 19253001315190 310
Tetramethrin 7696-12-0 1.85 22.5
Thiacloprid 2013111988-49-9 1260091818.90.9745000> 95400
Thiacloprid amide 2013 > 39300 15600100
Thiacloprid sulfonic acid 2013 > 47550 > 48050 > 100000
Thiamethoxam 153719-23-4 > 500002000017.5 > 97000> 90000
Thiencarbazone-methyl 317815-83-1 > 520004800> 4700035402980.8
Thiobencarb 28249-77-6 280 50117770
Thiodicarb 59669-26-0 605252.659> 8300
Thiophanate methyl 23564-05-8 4150227003930> 4700
Thiram 8 137-26-8 21530105170.61401600
Tralkoxydim 87820-88-0 > 3750 > 87000210077002600
Tralomethrin 66841-25-6 0.80.0880.01950.0044
Triadimefon 201343121-43-3 2050418005217000
Triallate 2303-17-5 6003845.5131202400
Triasulfuron 8 82097-50-5 > 5000068600> 50000105000
Triazine DACT degradate . > 50000 > 50000
Triazine DEA degradate . 1000 0.17
Triazine DIA degradate . 8500 63000 2500
Triazine HA degradate 2163-68-0 > 1500 > 2050 > 10000
Tribenuron methyl 2013101200-48-0 > 5000011800360000< 28000222
Tribufos 78-48-8 122.53.53.41.561481100
Trichlorfon 52-68-6 791102.650.0057
Triclopyr acid 10 55335-06-3 58500 66450 29800
Triclopyr butoxyethyl ester (BEE) 64700-56-7 13019125 70860
Triclopyr degradate (TCP) 55335-06-3 950 6700 2300
Triclopyr triethylamine (TEA) 57213-69-1 39600> 322001730002500041006100
Trifloxystrobin 141517-21-7 74.312.52.837> 1930
Trifloxystrobin degradate CGA-321113 > 53000 > 47500320078800
Triflumizole 68694-11-1 2903370067140720
Trifluralin 1582-09-8 20.51.142802.47.5243.5
Urea sulfate 21351-39-3 40000 11500
Vinclozolin 50471-44-8 1420602000790< 1060> 900
Zeta-cypermetherin 52315-07-8 0.1950.140.00180.00059
Zinc Phosphide 1314-84-7
Ziram 8 137-30-4 4.85101243967370
Zoxamide 156052-68-5 783.48> 390391019

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Footnotes

Generic footnotes

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Definitions

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References

aStephan, C.E, D.I. Mount, D.J. Hanson, J.H. Gentile, G.A. Chapman, and W.A. Brungs. 1985. Guidelines for Deriving Numerical National Water Quality Criteria for the Protection of Aquatic Organisms and Their Uses. EPA PB85-227049.

bU.S. EPA. 2004. Overview of the Ecological Risk Assessment Process in the Office of Pesticide Programs. Office of Prevention, Pesticides, and Toxic Substances. Office of Pesticide Programs. Washington, D.C. January 23, 2004.

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