Standards for water treatment chemicals

Nov. 12, 2014

BIRMINGHAM — In Water Technology’s November issue, Dave Purkiss, contributing writer, writes about the latest water treatment requirements to help protect drinking water from harmful chemicals.

BIRMINGHAM — In Water Technology’s November article, “The latest standards for protecting drinking water,” Dave Purkiss, a contributing author, writes about the newest requirements for chemicals used in drinking water treatment and their impact on the water industry.

In the article, Purkiss explains how “Standard NSF/ANSI 60: Drinking Water Treatment Chemicals – Health Effects” establishes requirements verifying treatment chemicals do not add unsafe levels of chemicals or contaminants into drinking water supplies.

He adds, “This includes treatment chemicals for corrosion and scale control, pH adjustment, coagulants and flocculants, softening, disinfection and oxidation chemicals, precipitation and sequestering chemicals as well as other specialty chemicals used in the treatment of public drinking water supplies.”

Purkiss continues by offering the following information included in the NSF certification:

  • A review of the chemical’s formulation and maximum use level
  • An audit of the manufacturing facility/facilities
  • Testing of the chemical at 10 times the maximum use level to determine any harmful contaminants that may be added to drinking water
  • Testing regulated contaminants, such as lead and other contaminants not covered in drinking water regulations but have had health-based criteria established according to the standard.

You can find the November feature on new water treatment requirements here.

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