The Albert Tower: Ramsey, Isle of man

Beale, J.

doi:10.1093/nq/s4-iv.82.71

Cited by 1 publication

(1 citation statement)

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“…One filter, which was designed to remove fluoride (Filter E), effectively removed the fluoride to less than the detection limit. While this type of filter may be helpful in situations where the consumer may want to remove high levels of naturally occurring fluoride from source waters, the use of this type of filter negates the treatment objectives of municipalities that add fluoride. While the pitcher Filter A was conditioned according to the manufacturer’s recommendation and the filter was not designed to remove fluoride, we found that this filter removed a significant amount of fluoride (>90%).…”

Section: Discussionmentioning

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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Section: Discussionmentioning

confidence: 99%