|
||||||
|---|---|---|---|---|---|---|
| Home | 29 CFR | 40 CFR | 49 CFR | Federal Register | MSDS Search | Purchase CFR e-Books |
§141.51 Maximum contaminant level goals for inorganic contaminants.
(a) [Reserved]
(b) MCLGs for the following contaminants are as indicated:
------------------------------------------------------------------------
Contaminant MCLG (mg/l)
------------------------------------------------------------------------
Antimony...................................... 0.006
Arsenic....................................... zero \1\
Asbestos...................................... 7 Million fibers/liter
(longer than 10 mm).
Barium........................................ 2
Beryllium..................................... .004
Cadmium....................................... 0.005
Chromium...................................... 0.1
Copper........................................ 1.3
Cyanide (as free Cyanide)..................... .2
Fluoride...................................... 4.0
Lead.......................................... zero
Mercury....................................... 0.002
Nitrate....................................... 10 (as Nitrogen).
Nitrite....................................... 1 (as Nitrogen).
Total Nitrate+Nitrite......................... 10 (as Nitrogen).
Selenium...................................... 0.05
Thallium...................................... .0005
------------------------------------------------------------------------
\1\ This value for arsenic is effective January 23, 2006. Until then,
there is no MCLG.
[50 FR 47155, Nov. 14, 1985, as amended at 52 FR 20674, June 2, 1987;
56 FR 3593, Jan. 30, 1991; 56 FR 26548, June 7, 1991; 56 FR 30280, July 1, 1991;
57 FR 31846, July 17, 1992; 60 FR 33932, June 29, 1995; 66 FR 7063, Jan. 22,
2001]