U.S. Geological Survey National Water-Quality Assessment Program Groundwater-quality analytes Major ions and selected trace elements­schedule 2750 (14 VOCs­schedule 4436 and 4437 constituents) (87 compounds) Bromide 1,1,1,2­Tetrachloroethane Calcium 1,1,1­Trichloroethane Chloride 1,1,2­Trichloroethane Fluoride 1,1­Dichloroethane Iron 1,1­Dichloroethylene Magnesium 1,1­Difluoroethane Manganese 1,2,3,4­Tetrahydronapthalene pH, laboratory 1,2,4­Trichlorobenzene Potassium 1,2,4­Trimethylbenzene 1,2­Dichloro­1,1,2,2­tetrafluoroetha Residue, 180 degrees Celsius (TDS) ne Silica 1,2­Dichlorobenzene Sodium 1,2­Dichloroethane specific conductance, laboratory 1,3­Butadiene Sulfate 1,4­Dichlorobenzene 1­Chloro­1,1­difluoroethane Trace elements­schedule 2750 (23 constituents) 2,2­Dichloro­1,1,1­trifluoroethane Aluminum Benzene Antimony Bromochloromethane Arsenic Bromodichloromethane Barium Bromoform Beryllium Bromomethane Boron Butane Cadmium Carbon disulfide Chromium Chlorobenzene Cobalt Chlorodifluoromethane Copper Chloroform Lead Chloromethane Lithium cis­1,2­Dichloroethylene Manganese cis­1,3­Dichloropropene Molybdenum Dibromochloromethane Nickel Dichlorofluoromethane pH, laboratory Dichloromethane Selenium Ethylbenzene Silver Hexane Strontium m­ and p­Xylene Thallium n­Pentane Uranium, natural n­Propylbenzene Vanadium Naphthalene Zinc o­Xylene sec­Butylbenzene Nutrients­schedule 2755 and lab code 2612 (6 constituents) Styrene Ammonia as N tert­Butyl methyl ether Nitrite Tetrachloroethylene Nitrite + nitrate Tetrachloromethane Orthophosphate Toluene

Total nitrogen (NH3+NO2+NO3+Organic), filtered trans­1,2­Dichloroethylene Dissolved organic carbon trans­1,3­Dichloropropene

VOCs­continued Trichloroethylene 4­Androstene­3,17­dione Vinyl chloride Bisphenol A 1,1­Dichloro­2­propanone Cholesterol 1,2,3­Trichloropropane cis­Androsterone 1,2­Dibromo­3­chloropropane Dihydrotestosterone 1,2­Dibromoethane Epitestosterone 1,2­Dichloropropane Equilenin 1,3­Dioxolane Equilin 1,4­Dioxane Estriol 1­octanol Estrone 1Methoxy­4(2­propenyl)benzene Mestranol 2­ethoxyethyl acetate Norethindrone 2­hexanone, 5­methyl­ Progesterone 2­Nitropropane Sample volume 2­pentanol, 4­methyl­ Testosterone 2­Propen­1­ol

Pharmaceuticals­schedule 4­heptanone, 2,6­dimethyl­ 2440 (30 constituents) 1,7­Dimethylxanthine acetate, ethyl (p­Xanthine) acetate, isobutyl 10­Hydroxy­amitriptyline acetate, isopropyl Abacavir acetate, propyl Acetaminophen acetonitrile Acyclovir Acrolein Albuterol alpha­Terpineol Alprazolam Butanal Amitriptyline butanol Amphetamine Chloropicrin Antipyrine cyclohexanone Atenolol diethylamine, n­nitroso­ Atrazine Dimethoxymethane Benztropine Hexachlorocyclopentadiene Betamethasone hexanol, 2­ethyl­ Bupropion Isophorone Caffeine isopropyl alcohol Carbamazepine Methyl acetate Carisoprodol n­Pentanal Chlorpheniramine Nitrobenzene Cimetidine tert­Butyl alcohol Citalopram tert­Butyl methyl ether Clonidine trans­Crotonaldehyde Codeine Cotinine Hormones­schedule 2434 (22 constituents) Dehydronifedipine 11­Ketotestosterone Desmethyldiltiazem 17­alpha­Estradiol desvenlafaxine 17­alpha­Ethynylestradiol Dextromethorphan 17­beta­Estradiol Diazepam (valium) 3­beta­Coprostanol Diltiazem 4,4'­Bisphenl F 4,4'­Bisphenol S

Pesticides ­­schedule 2437 (229 compounds) Carbaryl 1H­1,2,4­Triazole Carbendazim 2,3,3­Trichloro­2­propene­1­sulfonic acid (TCPSA) Carbofuran 2,4­D Carboxy molinate 2­(1­Hydroxyethyl)­6­methylaniline Chlorimuron­ethyl 2­[(2­Ethyl­6­methylphenyl)amino]­1­propanol Chlorosulfonamide acid 2­Amino­N­isopropylbenzamide Chlorpyrifos 2­Aminobenzimidazole Chlorpyrifos oxon 2­Chloro­2',6'­diethylacetanilide Chlorsulfuron cis­Bifenthrin acid/cis­Cyhalothrin 2­Chloro­4,6­diamino­s­triazine {CAAT} (Didealkylatrazine) acid/cis­Tefluthrin acid 2­Chloro­4­isopropylamino­6­amino­s­triazine cis­Permethrin 2­Chloro­6­ethylamino­4­amino­s­triazine {CEAT} Cyanazine 2­Chloro­N­(2­ethyl­6­methylphenyl)acetamid e Dacthal monoacid 2­Hydroxy­4­isopropylamino­6­amino­s­triazin e Dechlorofipronil 2­Hydroxy­4­isopropylamino­6­ethylamino­s­triazine {OIET} Dechlorometolachlor 2­Hydroxy­6­ethylamino­4­amino­s­triazine Deiodo flubendiamide 2­Isopropyl­6­methyl­4­pyrimidinol Deisopropyl prometryn 3,4­Dichlorophenylurea Demethyl fluometuron 3­Hydroxycarbofuran Demethyl hexazinone B 3­Phenoxybenzoic acid Demethyl norflurazon 4­(Hydroxymethyl)pendimethalin Desamino metribuzin 4­Chlorobenzylmethyl sulfoxide Desamino­diketo metribuzin 4­Hydroxy molinate Desulfinylfipronil 4­Hydroxychlorothalonil Desulfinylfipronil amide 4­Hydroxyhexazinone A Diazinon Acephate Diazinon oxon Acetochlor Dicamba Acetochlor oxanilic acid Dichlorvos Acetochlor sulfonic acid Dicrotophos Acetochlor sulfynilacetic acid Didemethyl hexazinone F Alachlor Diflubenzuron Alachlor oxanilic acid Diflufenzopyr Alachlor sulfonic acid Diketonitrile­isoxaflutole Alachlor sulfynilacetic acid Dimethenamid Aldicarb Dimethenamid oxanilic acid Aldicarb sulfone Dimethenamid SAA Aldicarb sulfoxide Dimethenamid sulfonic acid Ametryn Dimethoate Asulam Disulfoton Atrazine Disulfoton oxon Azinphos­methyl Disulfoton oxon sulfone Azinphos­methyl oxon Disulfoton oxon sulfoxide Azoxystrobin Disulfoton sulfone Bentazone Disulfoton sulfoxide Bifenthrin Diuron Bromacil EPTC Bromoxynil EPTC degradate R248722 Butralin Ethoprophos Butylate Etoxazole

Pesticides ­­continued Methyl parathion Famoxadone Metolachlor Metolachlor hydroxy Fenamiphos morpholinone Fenamiphos sulfone Metolachlor oxanilic acid Fenamiphos sulfoxide Metolachlor sulfonic acid Fenbutatin oxide Metribuzin Fentin Metribuzin DK Fipronil Molinate Fipronil amide Myclobutanil Fipronil sulfide N­(3,4­Dichlorophenyl)­N'­methylurea Fipronil sulfonate Naled Fipronil sulfone Nicosulfuron Flubendiamide Norflurazon Flumetsulam Novaluron Fluometuron O­Ethyl­O­methyl­S­propylphosphorothioate O­Ethyl­S­methyl­S­propyl Fonofos phosphorodithioate O­Ethyl­S­propyl Halosulfuron­methyl phosphorothioate Hexazinone Omethoate (Dimethoate oxon) Hexazinone Transformation Product C Orthosulfamuron Hexazinone Transformation Product D Oryzalin Hexazinone Transformation Product E Oxamyl Hexazinone Transformation Product G Oxamyl oxime Hydroxy didemethyl fluometuron Oxyfluorfen Hydroxy monodemethyl fluometuron Paraoxon Hydroxyacetochlor Pendimethalin Hydroxyalachlor Phorate Hydroxydiazinon Phorate oxon Hydroxyfluometuron Phorate oxon sulfone Hydroxymetolachlor Phorate oxon sulfoxide Hydroxyphthalazinone Phorate sulfone Hydroxysimazine Phorate sulfoxide Hydroxytebuthurion Phosmet Imazamox Phthalazinone Imazaquin Piperonyl butoxide Imazethapyr Profenofos Imidacloprid Prometon Indoxacarb Prometryn Isoxaflutole Propanil Isoxaflutole acid metabolite RPA 203328 Propargite Kresoxim­methyl Propazine Lactofen Propiconazole Linuron Propoxur Malaoxon Propyzamide Malathion Prosulfuron MCPA Pymetrozine Metalaxyl Pyraclostrobin Metconazole Pyridaben Methamidophos Pyriproxyfen Methidathion Methomyl Methomyl oxime Methoxyfenozide Methyl paraoxon

Pesticides ­­continued Radionuclides sec­Acetochlor oxanilic acid Radon sec­Alachlor oxanilic acid Radium­224, 226, 228 Siduron Polonium­210 Simazine Lead­210 Sulfentrazone Gross alpha and beta Sulfometuron­methyl Sulfosulfuron Sulfosulfuron ethyl sulfone Tebuconazole Additional analytes Tebufenozide Stable isotopes Tebupirimfos oxon Age date tracers Tebupirimphos Microbial indicators Tebuthiuron Tebuthiuron TP 104 Tebuthiuron TP el108 Tebuthiuron TP el109 Tebuthiuron Transformation Product 106 Terbacil Terbufos Terbufos oxon Terbufos oxon sulfone Terbufos oxon sulfoxide Terbufos sulfone Terbufos sulfoxide Terbuthylazine Tetraconazole Thiobencarb trans­Permethrin Triallate Tribufos Triclopyr Trifloxystrobin