40 CFR § 141.52 National Primary Drinking Water Regulations

§ 141.52 Maximum contaminant level goals for microbiological contaminants.

Current through Aug 22, 2025 · Read all of Part 141

⚠ 4 pending changes to Part 141

(a) MCLGs for the following contaminants are as indicated:

ContaminantMCLG
(1) Giardia lambliazero
(2) Viruseszero
(3) Legionellazero
(4) Total coliforms (including fecal)zero
coliforms and Escherichia coli
(5) Cryptosporidiumzero
(6) Escherichia coli (E. coli)zero

(b) The MCLG identified in paragraph (a)(4) of this section is applicable until March 31, 2016. The MCLG identified in paragraph (a)(6) of this section is applicable beginning April 1, 2016.

[78 FR 10347, Feb. 13, 2013]

← § 141.51 Maximum contaminant level goals for inorganic contaminants.§ 141.53 Maximum contaminant level goals for disinfection byproducts. →