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DWQ Home > Ground Water > Ground Water Quality Standards (GWQS)

Utah Ground Water Quality Protection Program

Ground Water Quality Standards - Table 1 of R317-6-2.1

Parameter
CASRN
GWQS
Unit
Physical Characteristics
Color
 
15.0
 
Corrosivity 
 
noncorrosive
 
Odor
 
3.0
 
pH
 
6.5 - 8.5

 

Inorganic Chemicals
Bromate
7789-38-0
0.01
mg/l
Chloramine (as Cl2)
10599-90-3
4.0
mg/l
Chlorine (as Cl2)
7782-50-5
4.0
mg/l
Chlorine Dioxide
10049-04-4
0.8
mg/l
Chlorite
7758-19-2
1.0
mg/l
Cyanide (free)
143-33-9
0.2
mg/l
Fluoride
7681-49-4
4.0
mg/l
Nitrate (as N)
14797-55-8
10.0
mg/l
Nitrite (as N)
14797-65-0
1.0
mg/l
Total Nitrate +
Nitrite (both as N)
10.0
mg/l
Metals
Antimony
7440-36-0
0.006
mg/l
Arsenic
7440-38-2
0.05
mg/l
Asbestos (> 10 microns in length)
1332-21-4
7E+06
fibers/l
Barium
7440-39-3
2.0
mg/l
Beryllium
7440-41-7
0.004
mg/l
Cadmium
7440-43-9
0.005
mg/l
Chromium (total)
7440-47-3
0.1
mg/l
Copper
7440-50-8
1.3
mg/l
Lead
7439-92-1
0.015
mg/l
Mercury (inorganic)
7487-94-7
0.002
mg/l
Selenium 
7782-49-2
0.05
mg/l
Silver 
7440-22-4
0.1
mg/l
Thallium 
7440-28-0
0.002
mg/l
Zinc
7440-66-6
5.0
mg/l
Organic Chemicals
Pesticides and PCBs
Alachlor
15972-60-8
0.002
mg/l
Aldicarb
116-06-3
0.003
mg/l
Aldicarb sulfone
1646-88-4
0.003
mg/l
Aldicarb sulfoxide
1646-87-3
0.004
mg/l
Atrazine
1912-24-9
0.003
mg/l
Carbofuran
1563-66-2
0.04
mg/l
Chlordane
57-74-9
0.002
mg/l
Dalapon (sodium salt)
75-99-0
0.2
mg/l
Dibromochloropropane (DBCP)
96-12-8
0.0002
mg/l
Dichlorophenoxyacetic acid
(2, 4 -) (2, 4 - D)
94-75-7
0.07
mg/l
Dinoseb
88-85-7
0.007
mg/l
Diquat
85-00-7
0.02
mg/l
Endothall
145-73-3
0.1
mg/l
Endrin
72-20-8
0.002
mg/l
Ethylene dibromide (EDB)
106-93-4
0.00005
mg/l
Glyphosate
1071-83-6
0.7
mg/l
Heptachlor
76-4-8
0.0004
mg/l
Heptachlor epoxide
1024-57-3
0.0002
mg/l
Lindane
58-89-9
0.0002
mg/l
Methoxychlor
72-43-5
0.04
mg/l
Oxamyl (Vydate)
23135-22-0
0.2
mg/l
Pentachlorophenol
87-86-5
0.001
mg/l
Picloram
1918-02-1
0.5
mg/l
Polychlorinated biphenyls (PCBs)
1336-36-3
0.0005
mg/l
Simazine
122-34-9
0.004
mg/l
Toxaphene
8001-35-2
0.003
mg/l
2, 4, 5 - TP (Silvex)
93-72-1
0.05
mg/l
Volatile Organic Chemicals
Benzene
71-43-2
0.005
mg/l
Benzo(a)pyrene (PAH)
50-32-8
0.0002
mg/l
Carbon tetrachloride
56-23-5
0.005
mg/l
Dichloroethane (1,2 - )
107-06-2
0.005
mg/l
Dichloroethylene (1,1 - )
75-35-4
0.007
mg/l
Dichloromethane
75-09-2
0.005
mg/l
Di (2-ethylhexyl) adipate
103-23-1
0.4
mg/l
Di (2-ethylhexyl) phthalate (PAE)
117-81-7
0.006
mg/l
2,3,7,8-TCDD (Dioxin)
1746-01-6
3E-08
mg/l
Dichlorobenzene (para - )
106-46-7
0.075
mg/l
Dichlorobenzene (o - )
95-50-1
0.6
mg/l
Dichloroethylene (cis - 1,2 )
156-59-2
0.07
mg/l
Dichloroethylene (trans - 1,2 )
156-60-5
0.1
mg/l
Dichloropropane (1,2 - )
78-87-5
0.005
mg/l
Ethylbenzene
100-41-4
0.7
mg/l
Hexachlorobenzene
118-74-1
0.001
mg/l
Hexachlorocyclopentadiene
77-47-4
0.05
mg/l
Monochlorobenzene
108-90-7
0.1
mg/l
Styrene
100-42-5
0.1
mg/l
Tetrachloroethylene
127-18-4
0.005
mg/l
Toluene
108-88-3
1
mg/l
Trichlorobenzene (1,2,4-)
120-82-1
0.07
mg/l
Trichloroethane (1,1,1-)
71-55-6
0.2
mg/l
Trichloroethane (1,1,2-)
79-00-5
0.005
mg/l
Trichloroethylene
79-01-6
0.005
mg/l
Vinyl chloride
75-01-4
0.002
mg/l
Xylenes (Total)
1330-20-7
10
mg/l
Other Organic Chemicals
Five Haloacetic Acids (HAA5)
0.06
mg/l
 Monochloroacetic acid (MCAA)
79-11-8
Dichloroacetic acid (DCAA)
76-43-6
Trichloroacetic acid (TCAA)
67-66-3
 Bromoacetic acid (MBAA)
79-08-3
 Dibromoacetic acid (DBAA)
631-64-1
Total Trihalomethanes (TTHM)
0.08
mg/l
Bromoform
75-25-2
Chloroform
67-66-3
Bromodichloromethane
75-27-4
Dibromochloromethane
124-48-1
Radionuclides
Combined Radium-226 and Radium-228
7440-14-4
5
pCi/l
Gross alpha particle activity, including Radium-226 but excluding Radon and Uranium
15
pCi/l
Uranium
7440-61-1
0.030
mg/l
Beta Particle and Photon Radioactivity

The average annual concentration from man-made radionuclides of beta particle and photon radioactivity from man-made radionuclides shall not produce an annual dose equivalent to the total body or any internal organ greater than four millirem/year.

Except for the radionuclides listed below, the concentration of man-made radionuclides causing four millirem total body or organ dose equivalents shall be calculated on the basis of a two liter per day drinking water intake using the 168 hour data listed in "Maximum Permissible Body Burden and Maximum Permissible Concentration Exposure", NBS Handbook 69 as amended August 1962, U.S. Department of Commerce. If two or more radionuclides are present, the sum of their annual dose equivalent to the total body or to any organ shall not exceed four millirem/year.

Average annual concentrations assumed to produce a total body or organ dose of four millirem/year:

Radionuclide
Critical Organ
pCi per liter
Tritium
Total Body
20,000
Strontium-90
Bone Marrow
8


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