Evidence map›Paper›PMID 38822469›Full record

ArticleJournal of water and health2024

Commercial reverse osmosis point-of-use systems in Egypt failed to purify tap water.

Mahmoud Gad, Mohamed A Marouf, Amr Abogabal, Anyi Hu, Noura Nabet

Abstract read
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In one paragraph

Article in Journal of water and health, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

1 citing paper in PubMed.

  1. 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

5 authors.

Mahmoud GadEnvironmental Parasitology Laboratory, Water Pollution Research Department, National Research Centre, Giza 12622, Egypt E-mail: mi.saleh@nrc.sci.eg.ORCID https://orcid.org/0000-0001-9287-6453
Mohamed A MaroufEnvironmental Parasitology Laboratory, Water Pollution Research Department, National Research Centre, Giza 12622, Egypt.
Amr AbogabalReference Laboratory, Holding Company for Water and Wastewater, Cairo 12766, Egypt.
Anyi HuCAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China.
Noura NabetZoology Department, Faculty of Science, Menoufia University, Menofia, Egypt.

Funding

STDF 44201
6 · The paper itself

Abstract

This study addresses the heightened global reliance on point-of-use (PoU) systems driven by water quality concerns, ageing infrastructure, and urbanization. While widely used in Egypt, there is a lack of comprehensive evaluation of these systems. We assessed 10 reverse osmosis point-of-use systems, examining physicochemical, bacteriological, and protozoological aspects of tap water (inlets) and filtered water (outlets), adhering to standard methods for the examination of water and wastewater. Results showed significant reductions in total dissolved solids across most systems, with a decrease from 210 ± 23.6 mg/L in tap water to 21 ± 2.8 mg/L in filtered water for PoU-10. Ammonia nitrogen levels in tap water decreased from 0.05 ± 0.04 to 2.28 ± 1.47 mg/L to 0.02 ± 0.04 to 0.69 ± 0.64 mg/L in filtered water. Despite this, bacterial indicators showed no significant changes, with some systems even increasing coliform levels. Protozoological analysis identified prevalent

Indexed as

Drinking WaterOsmosisWater PurificationEgyptFiltrationWater MicrobiologyWater QualityWater SupplyDrinking WaterbacteriaEgyptphysicochemical parametersprotozoareverse osmosis point-of-use systemswater quality

Identifiers

PMID38822469

What OpenQuestion holds

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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.