NSF ANSI 60-2011

NSF ANSI 60-2011

NSF ANSI 60-2011

NSF ANSI 60-2011 –  Drinking Water Treatment Chemicals – Health Effects
NSF International / 02-May-2011 / 156 pages

This version of NSF ANSI 60-2011 includes the following revisions:
Issue 39: It was established that the Single Product Allowable Concentration (SPAC) for bromate will be lowered from 0.005 mg/L to 0.003 mg/L on January 1, 2013. An informational annex (Annex G) was created to address this requirement until the implementation date. In addition, the bromate acceptance criteria for low-bromate hypochlorites was raised from 0.001 mg/L to 0.003 mg/L.
Issue 46: Requirements for the evaluation of perchlorate in hypochlorites were added. This includes establishment of SPACs, criteria for analytical methods, sample requirements, and requirements to inform the user of production date and provide references to recommended handling and storage requirements.
Issue 47: This issue added the requirement of tamper resistant/ tamper-evident seals on all containers of water treatment chemicals sold to water suppliers under 3.9.
Issue 49: This issue included revisions to multiple sections of the Standard. The definition of typical use level was added and the definition of maximum use level was revised for clarification under 2. 3.2.1 was revised to clarify that toxicology studies for each product submission are not required if SPACs are established for each chemical contaminant of concern under Annex A. Method E was updated in Annex B (B.3.6) to reference the specific analysis methods with regards to sample preservation and storage instruction. The remaining references to mercury testing were deleted from Annex B (B.3.6 and B.4.2.3) (The requirement for mercury analysis of elemental chlorine was removed from Table 6.1 in an earlier version of the Standard). An editorial revision was made to Method E (B.3.6), correcting a typo in which a multiple factor of 100 was incorrectly shown to reflect 100 times the evaluation dose. The value was revised to reflect the correct number 10.

Keywords of NSF ANSI 60-2011 : drinking water, treatment chemicals, health effects, coagulation and flocculation chemicals, corrosion/scale control chemicals, disinfection and oxidation chemicals

NSF International Standard / American National Standard
NSF ANSI 60-2011 Drinking Water Treatment Chemicals Health Effects
NSF ANSI 60-2011 NSF International Standard / American National Standard for Drinking Water Additives Drinking water treatment chemicals Health effects Standard Developer NSF International

Contents of NSF ANSI 60-2011
1 Purpose, scope, and normative references…. 1
1.1 Purpose ……. 1
1.2 Scope ………. 1
1.3 Normative references ……… 1
1.4 Alternate chemicals . 2
1.5 Significant figures …. 2
2 Definitions ………. 2
3 General requirements …. 4
3.1 General ……. 4
3.2 Formulation submission and review ……… 4
3.3 Sampling, preparation, and analysis of samples 5
3.4 Contaminant concentrations ……… 5
3.5 Product labeling …… 5
3.6 Formulation control . 6
3.7 Product traceability .. 6
3.8 Conformity assessment requirements ….. 6
3.9 Product security …… 7
4 Coagulation and flocculation chemicals ……… 8
4.1 Coverage ….. 8
4.2 Definitions … 9
4.3 General requirements …….. 9
4.4 Sample requirements ……. 10
4.5 Sample preparation ………. 10
4.6 Analysis ….. 10
4.7 Normalization ……. 10
4.8 Evaluation of contaminant concentrations …….. 11
5 Chemicals for corrosion and scale control, softening, precipitation, sequestering, and pH adjustment16
5.1 Coverage … 16
5.2 Definitions . 16
5.3 General requirements …… 16
5.4 Sample requirements ……. 16
5.5 Sample preparation ………. 16
5.6 Analysis ….. 17
5.7 Normalization ……. 17
5.8 Evaluation of contaminant concentrations …….. 17
6 Disinfection and oxidation chemicals. 23
6.1 Coverage … 23
6.2 Definitions . 23
6.3 General requirements …… 23
6.4 Sample requirements ……. 24
6.5 Sample preparation ………. 25
6.6 Analysis ….. 25
6.7 Normalization ……. 25
6.8 Evaluation of contaminant concentrations …….. 25
vi NSF ANSI 60-2011
7 Miscellaneous treatment applications ………. 28
7.1 Coverage … 28
7.2 Definitions . 28
7.3 General requirements …… 28
7.4 Sample requirements ……. 28
7.5 Sample preparation ………. 28
7.6 Analysis ….. 29
7.7 Normalization ……. 29
7.8 Evaluation of contaminant concentrations …….. 29
8 Miscellaneous water supply products 32
8.1 Coverage … 32
8.2 Definitions . 32
8.3 General requirements …… 32
8.4 Sample requirements ……. 33
8.5 Sample preparation ………. 33
8.6 Analysis ….. 33
8.7 Normalization of contaminant concentrations … 33
8.8 Evaluation of contaminant concentrations …….. 37
Annex A … 1 NSF ANSI 60-2011
A.1 General requirements …….. 1
A.2 Definitions … 1
A.3 Data requirements for published risk assessments ……. 4
A.4 Data requirements for new or updated risk assessments ……… 5
A.5 Data requirements for evaluating short-term exposures 6
A.6 Risk estimation for published assessments …….. 7
A.7 Risk estimation using new and updated risk assessments ……. 8
A.8 Risk estimation for short-term exposure (STEL calculation) … 14
A.9 Development of chemical class-based evaluation criteria …… 15
A.10 Key elements of a risk assessment for drinking water additive chemicals ……. 16
Annex B … 1
B.1 General ……. 1
B.2 Sampling ….. 1
B.3 Preparation of samples …… 3
B.4 Analysis methods .. 10
B.5 Estimated contaminant exposure concentration ………. 17
Annex C … 1
C.1 Background . 1
C.2 Products covered …. 1
C.3 Inoculum …… 1
C.4 Product exposure …. 2
C.5 Evaluation … 2
C.6 Confirmatory microbial growth testing protocol … 2
Annex D … 1
D.1 General ……. 1
D.2 USEPA and Health Canada drinking water criteria ……. 1
D.3 NSF International peer-reviewed drinking water criteria 1
D.4 Drinking water criteria based on USEPA guidance concentrations ….. 2
D.5 Threshold of evaluation (TOE) chemical list ……. 2
vii
Annex E … 1
E.1 General ……. 1
E.2 NSF International drinking water criteria (not externally peer reviewed) …….. 1
E.3 Informational threshold of evaluation chemicals . 2
Annex F … 1
Annex G … 1
G.1 Background . 1 NSF ANSI 60-2011
G.2 Reduction in the Single Product Acceptable Concentration ….. 1
G.3 Additional information on bromate 1
G.4 References .. 2

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