Reviewing performance of NSF/ANSI 53 certified water filters for lead removal

Tang, Min; Lytle, Darren; Achtemeier, Riley; Tully, Jennifer

doi:10.1016/j.watres.2023.120425

Cited by 2 publications

(2 citation statements)

References 23 publications

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“…Residents were instructed to follow the individual manufacturer ’ s instructions for the operation, maintenance, and use of their specific drinking water filter (BCHD 2024). Previous studies have detailed the certification requirements/laboratory testing along with the general structure/composition of drinking water filters ( Bosscher et al 2019 ; Doré et al 2021 ; NSF/ANSI 2021b ; Kutzing et al 2022 ; Tang et al 2023 ). The certification process for water filters via NSF/ANSI-53 requires that the certifying laboratory prepare and operate the filter according to manufacturer specifications during the chemical reduction capacity testing ( NSF/ANSI 2021b ).…”

Section: Introductionmentioning

confidence: 99%

An evaluation of properly operated NSF/ANSI-53 Pb certified drinking water filters in Benton Harbor, MI

Tully,

Schock,

Shilling

et al. 2024

Journal of Water and Health

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Communities across the United States and particularly in the Midwest continue to grapple with the complications associated with aging infrastructure. This includes the presence of lead (Pb)-bearing plumbing components such as lead service lines, downstream galvanized iron pipes, and Pb/tin (Sn) solder. The community of Benton Harbor, MI, experienced six Pb action level exceedances between 2018 and 2021, leading to increasing community concern and a request from the state of Michigan for the US Environmental Protection Agency (EPA) involvement. Between 9 November and 17 December 2021, US EPA Region 5 and Office of Research and Development, along with the state of Michigan, conducted a water filter efficacy and Pb-nanoparticulate (<100 nm) study to evaluate the performance of NSF/ANSI-53 Pb-certified drinking water filters and the presence of nanoparticulate. In this study, a total of 199 properly installed and operated drinking water filters (combination of faucet mounted and pitcher) were tested in their residential locations. One hundred percent of the water filters were found to perform to the standard to which they were certified, with filtered drinking water Pb concentrations below 5 ppb (maximum observed was 2.5 ppb). In addition, Pb particulate was identified; however, discrete Pb-containing nanoparticles were not widely found or identified.

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Section: Introductionmentioning

confidence: 99%

An evaluation of properly operated NSF/ANSI-53 Pb certified drinking water filters in Benton Harbor, MI

Tully,

Schock,

Shilling

et al. 2024

Journal of Water and Health

Self Cite

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“…The study also indicated that different water qualities would affect the performance of filters as all filter brands showed lower removal abilities in low-ionic strength waters. 28 Tang et al 29 conducted a comprehensive review of the performance of NSF/ANSI 53-certified water filters and found that in field studies, 99% (1512/1528) of the filters removed lead to at least the certification benchmark. However, in laboratory studies, only 61% (91/150) of the filters tested reduced lead to the certification benchmark.…”

Section: ■ Introductionmentioning

confidence: 99%

Efficacy of Pitcher Filters for Drinking Water Lead Reduction: A Challenge and Demonstration Study in Denver, CO

Aljadani,

Corwin,

Woodrow

et al. 2023

ACS EST Water

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The effectiveness of pitcher filters for removing lead and other metals (copper, iron, manganese, and zinc) without removing fluoride in drinking water was evaluated in laboratory and field environments in Denver Water. Effluent from corrosion control pipe racks (control at pH 7.8 adjusted to 8.8 and 1 mg/L as PO4 of orthophosphate) at two water treatment plants was used as challenge water to examine lead removal in five different NSF/ANSI-42 and 53 certified filters. The lead concentration in the challenge water from the control racks ranged between 31 and 97 ppb, and all filters had >94% removal efficiency. Based on the filter challenge study and the manufacturer reported longevity, pitcher Filter B was selected as the most appropriate for Denver’s water quality. Field demonstration study samples were collected from at least 50 different sites twice a year. All distributed filters reduced lead levels under the Action Level of 15 ppb, except one sample where the filter concentration was 40.8 ppb and the unfiltered concentration was 1.4 ppb. Overall, filters are generally reliable, but water quality can impact the removal efficacy.

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Reviewing performance of NSF/ANSI 53 certified water filters for lead removal

Cited by 2 publications

References 23 publications

An evaluation of properly operated NSF/ANSI-53 Pb certified drinking water filters in Benton Harbor, MI

An evaluation of properly operated NSF/ANSI-53 Pb certified drinking water filters in Benton Harbor, MI

Efficacy of Pitcher Filters for Drinking Water Lead Reduction: A Challenge and Demonstration Study in Denver, CO

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