Ariz. Admin. Code § tit. 18, ch. 9, art. 6, pt. J, Table 1
Contaminant | MCL1 (mg/L)2 |
Alachlor | 0.002 |
Alpha/photon emitters | 15 picocuries per Liter (pCi/L) |
Antimony | 0.006 |
Arsenic | 0.010 |
Asbestos (fibers>10 micrometers) | 7 million fibers per Liter (MFL) |
Atrazine | 0.003 |
Barium | 2 |
Benzene | 0.005 |
Benzo(a)pyrene (PAHs) | 0.0002 |
Beryllium | 0.004 |
Beta photon emitters | 4 millirems per year |
Bromate | 0.010 |
Cadmium | 0.005 |
Carbofuran | 0.04 |
Carbon tetrachloride | 0.005 |
Chlordane | 0.002 |
Chlorite | 1.0 |
Chlorobenzene | 0.1 |
Chromium (total) | 0.1 |
Cyanide (as free cyanided) | 0.2 |
2,4-D | 0.07 |
Dalapon | 0.2 |
1,2-Dibromo-3-chloropropane (DBCP) | 0.0002 |
o-Dichlorobenzene | 0.6 |
P-Dichlorobenzene | 0.075 |
1,2-Dichloroethane | 0.005 |
1,1-Dichloroethylene | 0.007 |
Cis-1,2-Dichloroethylene | 0.07 |
Trans-1,2-Dichloroethylene | 0.1 |
Dichloromethane | 0.005 |
1,2-Dichloropropane | 0.005 |
Di(2-ethylhexyl) adipate | 0.4 |
DI(2-ethylhexyl) phthalate | 0.006 |
Dinoseb | 0.007 |
Dioxin (2,3,7,8-TCDD) | 0.00000003 |
Diquat | 0.02 |
Endothall | 0.1 |
Endrin | 0.002 |
Ethylbenzene | 0.7 |
Ethylene dibromide | 0.00005 |
Fecal coliform and E.coli | MCL3 |
Fluoride | 4.0 |
Glyphosate | 0.7 |
Haloacetic acids (HAA5) | 0.060 |
Heptachlor | 0.0004 |
Heptachlor epoxide | 0.0002 |
Hexachlorobenzene | 0.001 |
Hexachlorocyclopentadiene | 0.05 |
Lindane | 0.0002 |
Mercury (inorganic) | 0.002 |
Methoxychlor | 0.04 |
Nitrate (measured as Nitrogen) | 10 |
Nitrite (measured as Nitrogen) | 1 |
Oxamyl (Vydate) | 0.2 |
Pentachlorophenol | 0.001 |
Picloram | 0.5 |
Polychlorinated biphenyls (PCBs) | 0.0005 |
Radium 226 and Radium 228 (combined) | 5 pCi/L |
Selenium | 0.05 |
Simazine | 0.004 |
Styrene | 0.1 |
Tetrachloroethylene | 0.005 |
Thallium | 0.002 |
Toluene | 1 |
Total Coliforms | 5.0 percent4 |
Total Trihalomethanes (TTHMs) | 0.080 |
Toxaphene | 0.003 |
2,4,5-TP (Silvex) | 0.05 |
1,2,4-Trichlorobenzene | 0.07 |
1,1,1-Trichloroethane | 0.2 |
1,1,2-Trichloroethane | 0.005 |
Trichloroethylene | 0.005 |
Uranium | 30µg/L |
Vinyl chloride | 0.002 |
Xylenes (total) | 10 |
NOTES
1 Maximum Contaminant Level (MCL) - The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to MCLGs as feasible using the best available treatment technology and taking cost into consideration. MCLs are enforceable standards.
2 Units are in milligrams per liter (mg/L) unless otherwise noted. Milligrams per liter are equivalent to parts per million (ppm).
3 A routine sample that is fecal coliform-positive or E. coli-positive triggers repeat samples-if any repeat sample is total coliform-positive, the system has an acute MCL violation. A routine sample that is total coliform-positive, and fecal coliform-negative or E. coli-negative triggers repeat samples - if any repeat sample is fecal coliform-positive or E. coli-positive, the system has an acute MCL violation. See also Total Coliforms.
4 No more than 5.0 percent samples total coliform-positive in a month. (For water systems that collect fewer than 40 routine samples per month, no more than one sample can be total coliform-positive per month.) Every sample that has total coliform must be analyzed for either fecal coliforms or E. coli. If two consecutive TC-positive samples, and one is also positive for E. coli or fecal coliforms, system has an acute MCL violation.
Ariz. Admin. Code tit. 18, ch. 9, art. 6, pt. J, Table 1