Evidence map›Paper›PMID 39505386›Full record

ArticleJournal of public health dentistry2025

The effect of water filter pitchers on the mineral concentration of tap water.

Loai Wadea Hazzazi, Armando E Soto-Rojas, E Angeles Martinez-Mier, Hani M Nassar, George J Eckert, Frank Lippert

Abstract read
In one paragraph

Article in Journal of public health dentistry, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

  1. Review
  2. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Loai Wadea HazzaziDepartment of Oral Biology, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia.ORCID https://orcid.org/0000-0003-4702-1813
Armando E Soto-RojasDepartment of Dental Public Health and Dental Informatics, Indiana University School of Dentistry, Indianapolis, Indiana, USA.ORCID https://orcid.org/0000-0002-7893-7528
E Angeles Martinez-MierDepartment of Biomedical and Applied Sciences, Indiana University School of Dentistry, Indianapolis, Indiana, USA.ORCID https://orcid.org/0000-0002-5389-0209
Hani M NassarDepartment of Restorative Dentistry, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia.ORCID https://orcid.org/0000-0002-6241-1118
George J EckertDepartment of Biostatistics and Health Data Science, Indiana University School of Medicine, Indianapolis, Indiana, USA.ORCID https://orcid.org/0000-0001-7798-7155
Frank LippertDepartment of Biomedical and Applied Sciences, Indiana University School of Dentistry, Indianapolis, Indiana, USA.ORCID https://orcid.org/0000-0003-1944-2960

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo investigate the effect of water filter pitchers on the concentration of different minerals in tap water.

methodsNine water filter pitchers (A-I) were chosen based on consumer preferences and Amazon reviews. Each filter was tested for its ability to modify the concentrations of fluoride, calcium, magnesium, potassium, and sodium in tap water. Tap water samples were collected before and after filtration, at various intervals (1, 5, 10, 30, 50, 75, and 100 L) during filtration, and analyzed using an ion-specific electrode (fluoride) and atomic absorption spectrometry (other minerals). Statistical analyses were conducted to compare filtered and unfiltered water mineral concentrations.

resultsWater filter pitcher effect: Filters F (p < 0.001) and G (p = 0.030) decreased fluoride concentrations. All filters except I (p = 0.235) and H (p = 0.717) decreased calcium concentrations (p < 0.01). Filters E (p = 0.018), D (p = 0.014), and G (p = 0.010) decreased magnesium concentrations. Filters I (p = 0.028) and D (p = 0.009) increased potassium concentrations. Filter A (p = 0.002) increased sodium concentrations, while C (p = 0.034) decreased sodium concentrations. Effect of filter aging: All filters affected mineral concentrations over time but to varying extents. Filter G had the most pronounced effect on reducing mineral concentrations compared to all others. No filter was able to completely remove fluoride from tap water, contrary to the claims made by three manufacturers.

conclusionsThe present study highlighted that water filter pitchers vary greatly in their ability to affect mineral concentrations in tap water during their use. Further research is needed to develop more effective water treatment solutions.

Indexed as

Drinking WaterFiltrationMineralsWater PurificationCalciumFluoridesMagnesiumPotassiumSodiumSpectrophotometry, AtomicCalciumDrinking WaterFluoridesMagnesiumMineralsPotassiumSodiumdental cariesdrinking waterfluoridetrace elementswater filter pitcherwater filtrationwater purification

Identifiers

PMID39505386
PMCPMC11927951

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.