[Code of Federal Regulations]
[Title 40, Volume 22]
[Revised as of July 1, 2006]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR142.63]

[Page 627]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 142_NATIONAL PRIMARY DRINKING WATER REGULATIONS IMPLEMENTATION
--Table of Contents
 
  Subpart G_Identification of Best Technology, Treatment Techniques or 
                     Other Means Generally Available
 
Sec.  142.63  Variances and exemptions from the maximum contaminant level 
for total coliforms.

    (a) No variances or exemptions from the maximum contaminant level in 
Sec.  141.63 of this chapter are permitted.
    (b) EPA has stayed the effective date of this section relating to 
the total coliform MCL of Sec.  141.63(a) of this chapter for systems 
that demonstrate to the State that the violation of the total coliform 
MCL is due to a persistent growth of total coliforms in the distribution 
system rather than fecal or pathogenic contamination, a treatment lapse 
or deficiency, or a problem in the operation or maintenance of the 
distribution system.

[54 FR 27568, June 29, 1989, as amended at 56 FR 1557, Jan. 15, 1991]