How do European Union countries regulate calcium and magnesium in drinking water, and is this regulation aligned with current scientific evidence regarding health impacts?
Regul Toxicol Pharmacol · 2020 · PMID 32007436 · DOI 10.1016/j.yrtph.2020.104589
Many EU countries regulate drinking water hardness, calcium, or magnesium, but these regulations are inconsistent and often not based on current health research.
The question
How do European Union countries regulate calcium and magnesium in drinking water, and is this regulation aligned with current scientific evidence regarding health impacts?
What they tested
The abstract does not explicitly state a hypothesis, but it implies that current regulations for calcium and magnesium in drinking water in EU countries may not adequately reflect scientific evidence on health effects.
How they did it
The study involved a summary of the situation regarding drinking water quality regulations in 28 European Union countries, focusing on calcium and magnesium content or total hardness.
What they found
The current EU Drinking Water Directive does not include limits for hardness, calcium, or magnesium. However, 12 EU member states regulate these parameters through law, and 7 countries use technical guidance. Several countries also provide educational information to the public. The regulations across most countries are not based on current research and are not comparable, with some providing recommended ranges and others mandatory minimum or maximum limit values.
What it means
Current drinking water quality regulations in most EU countries regarding calcium and magnesium are not consistently based on up-to-date scientific research and lack comparability. This information is intended to aid in the implementation of the revised EU Directive.
Limitations
The abstract does not explicitly state limitations of the study itself, but it highlights the limitation of current regulations not being based on current research.
Where the published abstract does not list limitations, we say so rather than inventing them. Read the full paper on PubMed before drawing conclusions.
The paper at a glance
| Magellan’s evidence label | adds magnesium and calcium (our label for this citation — see PubMed for the paper’s own title and authors) |
|---|---|
| Journal | Regul Toxicol Pharmacol |
| Year | 2020 |
| PMID | 32007436 ↗ |
| DOI | 10.1016/j.yrtph.2020.104589 ↗ |
| Topic | Environment, air, water & exposures |
Read the source: PubMed record (authors, abstract, full citation) ↗ · Publisher via doi.org ↗
Where Magellan uses this paper
This citation sits behind the evidence grade on the pages below. Grades are set from the research and are independent of affiliate commissions.
Mineral Remineralization Drops
Observational cohort studies and meta-analyses link higher magnesium intake—including magnesium in drinking water—with lower blood pressure and reduced risk of stroke, heart failure, type-2 diabetes, and all-cause mortality, and randomized controlled trials show that magnesium supplementation modestly lowers blood…
Mineral remineralization drops add dissolved minerals—principally magnesium and calcium—back into water…
Research describes the compound or intervention studied. It is not a claim about any specific product.
Molecules & mechanisms in this paper
Each of these is named in the paper’s own words above. Open the monograph for the full mechanism and its other citations.
Cite this page
These citations point at this summary. To cite the original paper with its full author list, use the PubMed record or doi.org.
Magellan Longevity. (2026). How do European Union countries regulate calcium and magnesium in drinking water, and is this regulation aligned with current scientific evidence regarding health impacts? [Plain-English summary of Regul Toxicol Pharmacol 2020, PMID 32007436, DOI 10.1016/j.yrtph.2020.104589]. Magellan Longevity. https://magellanlongevity.com/study/s191.html@misc{magellan_s191,
title = {How do European Union countries regulate calcium and magnesium in drinking water, and is this regulation aligned with current scientific evidence regarding health impacts?},
author = {{Magellan Longevity}},
year = {2026},
howpublished = {\url{https://magellanlongevity.com/study/s191.html}},
note = {Plain-English summary of PubMed PMID 32007436; DOI 10.1016/j.yrtph.2020.104589; Regul Toxicol Pharmacol 2020. Reviewed by Gabriel Radu, DO},
urldate = {2026-08-11}
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