EWG INVESTIGATION

Findings

About The Data

News Release

EWG Statement, 03/10/2008

Related News Clips

WHAT'S IN YOUR WATER?

Find Your Water Company

NATIONAL SUMMARY

Quality Varies Across the U.S.

CONTAMINANTS DATABASE

Find a Contaminant

Credits

Sign up for our
monthly email bulletin

Return to National Report

Unregulated Contaminants

The first ever nationwide compilation of tap water testing results from drinking water utilities shows widespread contamination of drinking water with scores of contaminants for which there are no enforceable health standards. Examples include the gasoline additive MTBE, the rocket fuel component perchlorate, and a variety of industrial solvents. The pollution affects more than one hundred million people in 42 states.

These findings reveal disturbing gaps in our system of public health protections, which supports resource-intensive efforts to remove pollutants at water treatment plants, but which fails to adequately fund protection of rivers, streams, and groundwater from pollution in the first place. Our results underscore the need for funding to states and utilities to safeguard public health through monitoring and the protection of our drinking water sources.

Rank	Contaminant with no Enforceable Health Standard in Tap Water	Population Exposed (of 231,439,195)		Number of Water Systems (of 39,751)		Number of States with Detections (of 42)
		At Any Level	Above Health Limits	At Any Level	Above Health Limits
1	Vanadium	40,925,052	0	927	0	2
		Metal used as an alloying addition to iron & steel
2	Radon	34,841,477	12,434,478	1,219	879	18
		natural (radioactive) breakdown product of uranium in soil, rock and water
3	MTBE	32,724,110	75,208	632	18	26
		MTBE is a fuel additive used as an octane enhancer in unleaded gasoline; its ban or phaseout is in progress in 16 states as of December 2005.
4	Tritium	32,230,006	0	80	0	9
		Pollutant from commercial nuclear reactors and research reactors, and government weapons production plants
5	Strontium-90	32,079,627	0	73	0	8
		Radioactive pollutant from nuclear fallout and possibly weapons and power production
6	Bromide	31,267,299	0	115	0	9
		Bromide is a naturally present constituent in some ground water and in coastal waters due to saltwater intrusion; it contributes to the formation of toxic tap water disinfection byproducts. It is also a component of crude oil extraction brines, and is used in making fumigants, flameproofing agents, dyes, and sanitizers.
7	Perchlorate	26,237,842	211,734	86	8	4
		Perchlorate is an oxygen additive in solid fuel propellant for rockets, missiles, and fireworks.
8	Molybdenum	24,622,018	5,073,250	134	84	6
		By-product of copper and tungsten mining, used as a alloy for various metals, occurs naturally in soil and rock
9	Lithium	21,141,607	0	5	0	2
		Lithium is a pollutant from mining and a chemical used for treatment for bipolar disorder. It occurs naturally in soil and rock.
10	Ammonia	13,054,202	0	208	0	10
		Ammonia enters water from fertilizer runoff, leaching septic tanks, and erosion of natural deposits; it is also used as disinfectant and in numerous industrial processes. Potential health impacts associated with Ammonia include gastrointestinal or liver toxicity, neurotoxicity, reproductive toxicity, respiratory toxicity, respiratory toxicity, and skin sensitivity.
11	Bromochloroacetic acid	12,521,375	0	558	0	14
		Disinfection by-product
12	Phosphate	12,197,592	0	169	0	8
		Phosphate is a component of fertilizer and manure and a pollutant in municipal wastewater discharges
13	1,1-Dichloroethane	6,996,666	85,078	108	2	31
		1,1-Dichloroethane is a fumigant; it is also used in paint and is a component of gasoline.
14	Dichlorodifluoromethane	6,809,656	0	109	0	23
		Dichlorodifluoromethane (Freon 12) is a refrigerant banned under the Montreal Protocol as of 2000 because of its ozone-depleting properties.
15	Metolachlor	6,791,300	0	175	0	17
		Metolachlor is an herbicide for corn, soybeans, peanuts, cotton, pod crops.
16	Chloromethane	6,262,579	511	977	3	33
		Chloromethane is a by-product of water disinfection and an EPA top priority for testing and study in tap water based on toxicity concerns. It is also an industrial chemical used in manufacture of silicone, rubber, pesticides, and more; was formerly used as refrigerant, now banned; is an industry and municipal wastewater pollutant; and is produced naturally in small quantities.
17	Acetone	5,599,503	0	440	0	9
		Acetone is a ubiquitous industrial solvent and chemical intermediate; it is used in manufacture of plastic, fibers, cosmetics, photographic film, and many other kinds of consumer goods. Potential health impacts associated with Acetone include cardiovascular or blood toxicity, kidney toxicity, gastrointestinal or liver toxicity, neurotoxicity, respiratory toxicity, and skin sensitivity.
18	Orthophosphate	4,952,893	0	430	0	11
		Chemical added to water at treatment plants, to combat lead contamination by decreasing corrosivity of water
19	Indeno[1,2,3-cd]pyrene	3,832,944	4,244	3	2	2
		Pollutant from the incomplete combustion of coal, wood, and gasoline combustion; pollutant from municipal waste incineration, coke ovens and cigarette smoke; constituent in gasoline, fresh and used motor oil; pollutant in road runoff
20	Acetochlor	3,514,991	0	37	0	2
		Acetochlor is a herbicide used with cabbage, citrus, coffee, and corn crops. Potential health impacts associated with Acetochlor include cancer, endocrine toxicity, and neurotoxicity.
21	Phosphorus	3,278,225	3,278,225	113	113	5
		Phosphorus is a component of fertilizer and manure, and a pollutant in municipal wastewater discharges.
22	1,2,3-Trichloropropane	3,144,511	0	70	0	8
		1,2,3-Trichloropropane is an industrial solvent, degreasing agent, and paint and varnish remover.
23	Trichlorofluoromethane	2,221,413	0	127	0	20
		Trichlorofluoromethane (Freon 11) is a refrigerant, solvent, chemical intermediate, and halocarbon aerosol that was banned as of 2000 under the Montreal Protocol because of its ozone-depleting properties.
24	Metribuzin	1,878,700	0	22	0	9
		Metribuzin is an herbicide used primarily on soybeans, potatoes, and alfalfa.
25	Trichlorotrifluoroethane	1,651,697	0	12	0	2
		Trichlorotrifluoroethane is an intermediate in manufacture of resins and other chemicals. It is used in fire extinguishers and as a foam blowing agent. It is a solvent for degreasing electrical equipment, photographic films, magnetic tapes, precision intruments, and more; a dry cleaning solvent; and a refrigerant.
26	Diethylphthalate	1,579,872	0	84	0	9
		Diethylphthalate is an industrial solvent used in many consumer products, particularly those containing fragrances; it is used in perfume, cologne, deodorant, soap, shampoo, hand lotion, and other personal care products.
27	Potassium-40 (total)	1,500,000	0	1	0	1
		Pollutant from natural deposits, nuclear testing, and industrial and medical instruments
28	Dibromomethane	1,389,133	0	108	0	21
		Dibromomethane is an unregulated by-product of tap water disinfection and an EPA top priority for testing and study in tap water based on toxicity concerns; it also has limited industrial uses as intermediate in chemical synthesis and ingredient in fire extinguishing fluids.
29	Chlorate	1,282,216	0	17	0	5
		Chlorate is a disinfection byproduct (unregulated chlorine dioxide byproduct); an herbicide; and a pollutant from explosives.
30	Isophorone	1,217,547	0	6	0	2
		Solvent for lacquers, plastics, oils, fats, gums, resins, nitrocellulose, vinyl resins and other chemicals; intermediate in chemical manufacturing; occurs naturally in cranberries
31	Methyl ethyl ketone	1,162,235	0	89	0	6
		Methyl ethyl ketone is an unregulated disinfection by-product from ozonation; and a solvent for coatings, adhesives, magnetic tape, printing inks, and other industrial and consumer goods.
32	Bromodichloroacetic acid	1,160,652	0	107	0	2
		Disinfection by-product
33	Isopropyl alcohol	1,140,512	0	98	0	1
		Isopropyl alcohol is an intermediate in chemical and pharmaceutical manufacturing. It is used as a solvent for coatings, ink, oil; in perfume, hand lotion, after shave, and other personal care products; and as chemical processing solvent and gasoline additive. It is produced naturally in waste decomposition.
34	Bromochloromethane	1,067,095	900	75	2	19
		Bromochloromethane is a disinfection by-product and an EPA top priority for testing and study in tap water based on toxicity concerns; it is also an intermediate in chemical manufacturing and a fire extinguishing agent.
35	Ethyl-t-butyl ether (ETBE)	1,038,331	0	4	0	1
		ETBE is a fuel additive (an octane enhancerused in unleaded gasoline) that is made from ethanol. It is considered an alternative to MTBE.
36	Naphthalene	921,499	0	116	0	24
		Naphthalene is an intermediate in chemical manufacturing, a moth repellent, a fungicide, and a pollutant from the incomplete combustion of fossil fuels.
37	Di-n-butylphthalate	795,383	0	79	0	10
		Di-n-butylphthalate is an industrial solvent or additive used in many consumer products such as nail polish, cosmetics, some printing inks, pharmaceutical coatings, and insecticides.
38	1,2,4-Trimethylbenzene	720,660	0	89	0	22
		1,2,4-Trimethylbenzene is a chemical intermediate; industrial solvent; component of gasoline, coal tar, and petroleum products; and possible water disinfection by-product. Potential health impacts associated with 1,2,4-Trimethylbenzene include cardiovascular or blood toxicity, neurotoxicity, and respiratory toxicity.
39	Diuron	715,038	0	8	0	1
		Diuron is an herbicide used on railroad rights-of-way, cotton, citrus crops, fruits and nuts, and other crops.
40	1,4-Dioxane	624,871	105,332	11	1	1
		1,4-Dioxane is a stabilizing chemical in industrial solvents; it is widely used as solvent in variety of consumer products, including paints, varnishes, lacquers, cosmetics and deodorants; it is used in paper, cotton, and textile processing, in fumigants and in the manufacture of pharmaceuticals.
41	Chloroethane	620,241	0	85	0	24
		Chloroethane is used in the manufacture of dyes, drugs, perfumes, and leaded gasoline additives; as an insectidice, intermediate in chemical manufacturing, and solvent; and is a possible tap water disinfection by-product.
42	Bromomethane	618,788	2,400	113	1	25
		Bromomethane is a pesticide used for soil, grain, indoor air and other applications; and a solvent used to extract vegetable and seed oils.
43	Butyl Benzylphthalate	597,319	0	45	0	5
		Butyl Benzylphthalate is an industrial solvent and additive used in adhesives, vinyl flooring, sealants, car-care products, and some personal care products.
44	Strontium	578,735	44,363	54	9	6
		Metal used in producing glass for TV sets; used in pyrotechnics and in refining zinc
45	Methyl isobutyl ketone	571,643	0	142	0	7
		4-Methyl 2-pentanone is an industrial chemical used in wide range of applications, including the production of paints, pesticides, textiles, inks, and rubber.
46	Chlorodibromoacetic acid	535,832	0	38	0	2
		Disinfection by-product
47	n-Nitrosodiphenylamine	529,273	0	8	0	1
		n-Nitrosodiphenylamine is a bubber additive,an intermediate in chemical manufacturing, and an anti-scorching agent.
48	Dacthal	486,126	0	16	0	5
		Dacthal is a herbicide for use on turf, strawberries, cotton, soybeans, and other plants.
49	Hydrogen sulfide	469,562	0	29	0	3
		Hydrogen sulfide is a constituent of crude petroleum, natural gas, volcanic gas, and hot springs. It is produced by the decomposition of human waste and animal waste, including from landfills and sewers; and is a pollutant from various industries including food processing, coke ovens, kraft paper mills, tanneries, and petroleum refineries.
50	Thiobencarb (Bolero)	468,450	0	2	0	1
		Herbicide used in rice production
51	Propachlor	456,705	0	14	0	5
		Herbicide used to control broadleaf weeds for corn, sorghum, soybeans, and other crops
52	1,1,1,2-Tetrachloroethane	441,482	0	27	0	9
		Used in metal degreasing and as intermediary in chemical manufacturing
53	1,3,5-Trimethylbenzene	384,723	0	43	0	17
		1,3,5-Trimethylbenzene is used in building materials, furnishings, and chemical manufacturing; it also may be a water disinfection by-product.
54	Dicamba	340,569	0	48	0	11
		Dicamba is an herbicide for agriculture, rangeland, pasture, industry; it is used for corn, wheat and other crops.
55	Dichloroacetonitrile	339,946	0	97	0	1
		Dichloroacetonitrile is an unregulated by-product of tap water disinfection.
56	1,1-Dichloropropanone	333,262	0	9	0	2
		1,1-Dichloropropanone is an unregulated by-product of tap water disinfection.
57	Tribromoacetic acid	298,338	0	9	0	2
		Tribromoacetic acid is an unregulaed by-product of tap water disinfection (a byproduct of ozonation called a haloacetic acid).
58	Cyanazine (Bladex)	292,535	0	38	0	4
		Cyanazine is an herbicide used on corn to control annual grasses and broadleaf weeds.
59	Dieldrin	285,826	285,826	44	44	6
		Dieldrin is a banned insecticide, used primarily on corn and cotton, and a breakdown product of aldrin.
60	Tetrahydrofuran	262,284	0	142	0	8
		Tetrahydrofuran is an intermediate in chemical manufacturing and a solvent for dyes and lacquers. It is used in production of food storage and packaging materials, rubber, resins, and plastics; and as an indirect food additive.
61	2,2-Dichloropropane	253,772	0	12	0	6
		2,2-Dichloropropane is an intermediate used in chemical manufacturing.
62	p-Chlorotoluene	253,039	0	12	0	8
		p-Chlorotoluene is a solvent and intermediate for ogranic chemicals and dyes; and a potential by-product of water disinfection.
63	1,2,3-Trichlorobenzene	212,574	0	23	0	9
		1,2,3-Trichlorobenzene is an intermediate for chemical manufacturing and is also used for termite control.
64	Alpha Chlordane	200,040	0	2	0	2
		Alpha Chlordane is a component of the banned pesticide Chlordane, a termiticide for home, garden, roadside, and agricultural use.
65	Endosulfan I	200,000	0	1	0	1
		Endosulfan I is a component of the pesticide endosulfan, used for control of insects on food crops such as grains, tea, fruits, on vegetables and on nonfood crops such as tobacco and cotton, and as a wood preservative.
66	Chloropicrin	200,000	0	1	0	1
		Chloropicrin is an unregulated by-product of tap water disinfection, and a pesticide used as a fumigant and wood perservative.
67	Iodomethane	188,412	0	3	0	2
		Proposed active pesticide ingredient currently under review; naturally occurring compound in seafood; industrial chemical with range of applications, including in microscopy, manufacture of pharmaceuticals, and as fire extinguisher
68	Aldicarb sulfone	162,099	30,259	21	8	7
		Insecticide used on various crops
69	Dichloroiodomethane	121,763	0	9	0	1
		Dichloroiodomethane is an unregulated by-product of tap water disinfection and an EPA top priority for testing and study based on toxicity concerns.
70	Dichlorprop	117,426	0	5	0	2
		Dichlorprop is an herbicide used to control weeds for rangeland, roadways, pastures, turf; it is also used on apples.
71	1,3-Dichloropropene	113,428	4,777	7	2	3
		1,3-Dichloropropene is used in chemical synthesis and soil fumigants; it is used as a nematocide and a corrosion inhibition agent.
72	o-Chlorotoluene	103,421	0	16	0	9
		o-Cholorotoluene is a drain pipe solvent, insecticide, bactericide; and is used in pharmaceuticals, synthetic rubber, and dyes.
73	Bromobenzene	99,070	0	16	0	9
		Bromobenzene is an industrial solvent, an intermediate in chemical manufacturing, a motor oil additive, and a possible by-product of water disinfection.
74	1,3-Dichloropropane	98,056	0	12	0	6
		Chemical intermediate for manufacture of cyclopropane
75	n-Propylbenzene	82,657	0	28	0	13
		n-Propylbenzene is a solvent, used in textile dyeing and printing; a pollutant from asphalt and landfill leachate; and a constituent of petroleum and coal.
76	Carbon disulfide	82,484	0	28	0	3
		Carbon disulfide is an intermediate in production of rubber, resins, cellophane, adhesives in food packaging, and numerous other chemicals; it was formerly used as fumigant; is a solvent in metal industries; and is used to remove metals from waste water; a natural product of anaerobic biodegradation.
77	Aldicarb sulfoxide	78,158	0	13	0	9
		Insecticide used on various crops
78	Ethyl ether	63,024	0	5	0	2
		Ethyl ether is a solvent for waxes, fats, oils, perfumes, and other products and chemicals; it is used in the production of chemicals, pharmaceuticals, smokeless gun powder and as a primer for gasoline engines; it is also used as a medical anesthetic.
79	Phenanthrene	62,027	0	21	0	4
		Phenanthrene is a pollutant from the incomplete combustion of fossil fuels. It is also used in the manufacture of dyes, explosives, and pharmaceuticals.
80	Butachlor	55,823	0	9	0	3
		Butachlor is an herbicide for rice, used to control annual grasses and broadleaf weeds.
81	Formaldehyde	54,898	46,900	3	1	2
		Formaldehyde is an unregulated by-product of tap water disinfection. It is also used in the manufacture of chemicals, including resins used for rug and fabric coatings and as adhesives for particle board; and is produced in the environment during combustion processes.
82	Dichlorofluoromethane	47,425	0	1	0	1
		Dichlorofluoromethane (Freon-21) is a refrigerant and ozone-depleting chemical to be phased out of use under the Montreal Protocol by 2015.
83	Aniline	47,332	0	17	0	1
		Aniline is used to make a wide variety of products such as polyurethane foam, agricultural chemicals, synthetic dyes, antioxidants, herbicides, varnishes and explosives; it is also used as a stabilizer for the rubber industry.
84	Glyoxal	46,900	0	1	0	1
		Glyoxal is an unregulated by-product of tap water disinfection; it is also used as formaldehyde substitute for disinfection.
85	Hexachlorobutadiene	44,579	0	7	0	7
		Hexachlorobutadiene is an intermediate in manufacture of rubber compounds and fluorinated lubricants, and is used in numerous industrial applications, including as a solvent for elastomers and as a heat transfer liquid.
86	Isopropylbenzene	43,479	0	21	0	10
		Isopropylbenzene is used to manufacture phenol, acetone, and other chemicals. It is also used as thinner for paints and enamels, is a component of high octane aviation fuel with minor use in gasoline blending, and is a pollutant from petroleum refining, evaporation and combustion.
87	Acenaphthene	42,952	0	15	0	3
		Acenaphthene is a pollutant in automobile exhaust and other emissions from fossil fuel combustion, and an intermediate in the manufacture of dyes and other chemicals; it is used in manufacture of plastics and pharmaceuticals; insecticide; fungicide, and is a pollutant from petroleum refining, coal tar distillation, and coal combustion. Potential health impacts associated with Acenaphthene include gastrointestinal or liver toxicity.
88	p,p'-DDT	40,541	40,541	1	1	1
		para-para DDT is an insecticide banned in the 1970's that was used for vegetables, field crops, livestock, and other applications.
89	2,4,5-T	39,273	0	2	0	2
		2,4,5-T is a herbicide banned in 1985; formerly used in the home and on recreation areas; on industrial sites, lumber yards, vacant lots, lawns and turf, and crops including rice.
90	tert-Butylbenzene	37,806	0	13	0	7
		Pollutant from the incomplete combustion of fossil fuels and various industrial processes
91	Aldrin	36,576	36,576	16	16	4
		Aldrin is a banned insecticide and termiticide, used for field, forage, vegetable and fruit crops, primarily on corn and cotton; it was also used as wood preservative.
92	n-Hexane	35,400	0	15	0	1
		n-Hexane is a solvent used to extract oil from vegetables; a cleaning agent in printing, textile, funiture, and shoe industries; a component of gasoline; and a chemical in craft supplies such as quick-drying glue and rubber cement.
93	1,1-Dichloropropene	33,388	0	5	0	4
		Industrial solvent; no information on specific uses is available in standard government and industry sources
94	Fluorene	30,982	0	10	0	3
		Pollutant from the incomplete combustion of fossil fuels (including oil, gasoline, coal and wood) and refuse; intermediate in production of dyes and other chemicals
95	Molinate (Ordram)	30,450	0	1	0	1
		Herbicide, used on rice, controls watergrass
96	1,1,2,2-Tetrachloroethane	29,090	29,055	8	7	6
		Used for metal degreasing and in the manufacture of paint, cement, paint removers, and moth-proofing products
97	n-Butylbenzene	28,040	0	13	0	7
		n-Butylbenzene is an intermediate for chemical manufacturing and a raw material for liquid crystals.
98	Benzo[a]anthracene	27,206	27,206	4	4	3
		Pollutant from combustion of organic matter, including fossil fuel and wood; research chemical
99	Methomyl	26,838	0	8	0	5
		Insecticide used with alfalfa, grapes, lettuce, and a variety of other fruits, vegetables and other crops
100	Benzo[k]fluoranthene	22,962	22,962	2	2	2
		Chemical from water distribution system tanks and pipes lined with coal tar or asphalt; pollutant from combustion of organic matter, including fossil fuel and wood; no commercial uses
101	Desisopropylatrazine	22,521	0	2	0	1
		Des-ieopropyl-atrazine is a breakdown product of the widely used crop herbicides atrazine, cyanazine, and simazine.
102	Pyrene	22,016	0	5	0	2
		Pollutant from the incomplete combustion of fossil fuels
103	Chrysene	19,106	19,106	3	3	2
		Pollutant from the incomplete combustion of fossil fuels
104	3-Hydroxycarbofuran	18,336	0	13	0	8
		3-Hydroxycarbofuran is a metabolite of Carbofuran insecticide, a fumigant used on rice and alfalfa.
105	2-Nitropropane	16,000	0	1	0	1
		Solvent in ink, paint, adhesives and other materials; intermediate in chemical manufacturing; component of explosives, propellants, and combustible fuels
106	Aldicarb	15,093	0	7	0	5
		Insecticide used on various crops
107	Benzo[b]fluoranthene	14,862	14,862	1	1	1
		Pollutant from combustion of organic matter, including fossil fuel and wood; research chemical
108	m-Dichlorobenzene	14,456	0	16	0	10
		m-Dichlorobenzene is an unregulated by-product of tap water disinfection. It is also used as a fumigant, an insecticide, and an intermediate in chemical manufacturing.
109	Acenaphthylene	13,702	0	12	0	2
		Acenaphthylene is a component of crude oil and coal tar; and a pollutant from petroleum refining, coal tar distillation, municipal waste water treatment facilities and municipal waste incinerators. Potential health impacts associated with Acenaphthylene include respiratory toxicity.
110	Carbaryl	13,671	0	8	0	5
		Carbaryl is a broad range pesticide (citrus, vegetables, lawns, nuts) that is also approved for home, garden, and industrial pesticide uses.
111	Baygon (Propoxur)	12,069	0	3	0	2
		Baygon is an insecticide used for mosquitoes in outdoor areas, and for other insects on lawns, flowers, pets and livestock as well as in homes and public buildings.
112	Paraquat	12,000	0	1	0	1
		Paraquat is an herbicide uses to control weeds and grasses for wide range of crops; a defoliant for cotton and hops; and a desiccant for fruit, sugar and other crops.
113	Fluoranthene	11,842	0	5	0	1
		Fluoranthene is a pollutant from the incomplete combustion of fossil fuels, and a constituent of coal tar and asphalt coatings on pipes and storage tanks in tap water distribution systems.
114	alpha-Lindane	9,689	9,689	7	7	1
		Alpha-Lindane is a component of the insecticide HCH (hexachlorocyclohexane) formerly used for gardens, lumber, cattle and phased out of use in the U.S. in the 1970s.
115	Methyl methacrylate	8,364	0	1	0	1
		Methyl methacrylate is used in the manufacture of resins and plastics.
116	Anthracene	7,966	0	4	0	1
		Anthracene is a pollutant from the incomplete combustion of fossil fuels. It is also used in manufacture of dyes, wood preservatives, synthetic fibers, plastics and other industrial and consumer goods; and is a chemical that leaches from water distribution system tanks and pipes lined with coal tar.
117	Nitrobenzene	5,216	0	1	0	1
		Nitrobenzene is used in the production of aniline, which is used to make dyes, herbicides, and drugs.
118	p-Isopropyltoluene	4,641	0	13	0	10
		p-Isopropyltoluene is a widely used industrial chemical, used in the manufacture of paint, furniture, and other consumer goods.
119	Dimethylphthalate	4,547	0	4	0	3
		Dimethylphthalate is used in insect repellant and plastic and as a rocket propellant.
120	Dibenz[a,h]anthracene	4,244	4,244	2	2	1
		Pollutant from the incomplete combustion of fossil fuels
121	Prometon (2,4-bis -6-(isopropylamino))	4,108	0	13	0	2
		Herbicide used to control annual and perennial weeds and grasses
122	sec-Butylbenzene	4,078	0	12	0	6
		Pollutant from the incomplete combustion of fossil fuels and various industrial processes
123	Bentazon (Basagran)	3,815	0	5	0	1
		Bentazon is an herbicide used to control broadleaf weeds for alfalfa, asparagus, cereals, beans, and many other crops.
124	Butyl Acetate	3,813	0	2	0	1
		Butyl acetate is used as lacquer solvent, primarily for wood furniture and automotive topcoats; process and extraction solvent; it is also used in adhesives and sealants.
125	Bromacil	3,812	0	9	0	1
		Bromacil is a general use herbicide, used for brush control and perennial grasses, and for pineapple and citrus crops.
126	2-Hexanone	3,743	0	5	0	1
		2-Hexanone is an unregulated water disinfection byproduct; it was formerly used in paint and paint thinner, to make other chemical substances, and to dissolve oils and waxes, but is largely phased out of commercial use.
127	beta-Lindane	3,578	3,578	2	2	1
		Beta-Lindane is a component of the insecticide HCH (hexachlorocyclohexane) formerly used for gardens, lumber, cattle and phased out of use in the U.S. in the 1970s.
128	Benzo[g,h,i]perylene	2,281	0	1	0	1
		Component of crude oil; pollutant from combustion of wood, coal, oil, propane, gasoline and diesel fuels; pollutant and from numerous industries, including petroleum refining and coal tar distillation; pollutant from municipal waste water treatment facilities and waste incinerators
129	Ethion	2,200	0	1	0	1
		Ethion is an organophosphate pesticide used for insect control on melons, fruit trees, citrus, grapes, and other crops.
130	Butylate (Sutan)	2,200	0	1	0	1
		Butylate is an herbicide used on corn crops to control grass weeds.
131	2,4-DB	2,200	0	1	0	1
		2,4-DB is a herbicide used on row crops. Potential health impacts associated with 2,4-DB include developmental toxicity, gastrointestinal or liver toxicity, and reproductive toxicity.
132	Trifluralin	2,200	0	1	0	1
		Herbicide to control grasses and broadleaf weeds, used for cotton, alfalfa, tomatoes, home lawns, and other applications
133	EPTC (Eptam)	2,200	0	1	0	1
		Pesticide used as soil fumigant for corn and other crops for the control of grassy, perennial and broadleaf weeds
134	Methiocarb	1,373	0	2	0	2
		Methiocarb is a pesticide used to control slugs and snails on citrus, rice, fruit, and other crops.
135	Phenols	970	970	1	1	1
		Phenol is a widely used industrial chemical, used as an intermediate in chemical manufacturing, as a slimicide, and as a disinfectant. It is released from the decomposition of organic waste.
136	25-Manganese-54	960	0	1	0	1
		Radioactive form of manganese produced at nuclear facilities
137	1,2-Dibromoethylene	938	0	2	0	1
		Research chemical; no reported commercial uses
138	Oil & Grease (total)	845	0	1	0	1
		Pollutant from commercial and urban runoff sources
139	2,4-Dinitrotoluene	545	545	1	1	1
		2,4-Dinitrotoluene is used in the production of dyes and as a propellant in explosives.
140	Chloramben	423	0	1	0	1
		Chloramben is an herbicide to control grasses and broadleaf weeds on soybeans and other crops.
141	Acrylonitrile	95	95	1	1	1
		Acrylonitrile is an intermediate in the manufacture of chemicals, antioxidants, pharmaceuticals, dyes; it is also a pesticide fumigant for grain.
142	Isopropyl ether	60	0	1	0	1
		Isopropyl ether is used as a solvent for resins, waxes, oils, dyes, and surface coatings; and as a laboratory extractant.