SIST EN 1018:2026
(Main)Chemicals used for treatment of water intended for human consumption - Calcium carbonate
Chemicals used for treatment of water intended for human consumption - Calcium carbonate
This document is applicable to calcium carbonate used for treatment of water intended for human consumption. It describes the characteristics of calcium carbonate and specifies the requirements and the corresponding test methods for calcium carbonate. It gives information on its use in water treatment.
Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch - Calciumcarbonat
Dieses Dokument gilt für Calciumcarbonat zur Aufbereitung von Wasser für den menschlichen Gebrauch. Es beschreibt die Eigenschaften von Calciumcarbonat und legt die Anforderungen sowie die entsprechenden Prüfverfahren für Calciumcarbonat fest. Es enthält Angaben zu dessen Anwendung in der Wasseraufbereitung.
Produits chimiques utilisés pour le traitement de l'eau destinée à la consommation humaine - Carbonate de calcium
Le présent document est applicable au carbonate de calcium utilisé pour le traitement de l’eau destinée à la consommation humaine. Il décrit les caractéristiques du carbonate de calcium et spécifie les exigences, ainsi que les méthodes d’essai correspondantes, relatives à ce produit. Il donne des informations quant à son utilisation dans le traitement de l’eau.
Kemikalije, ki se uporabljajo za pripravo pitne vode - Kalcijev karbonat
Ta dokument velja za kalcijev karbonat, ki se uporablja za obdelavo vode, namenjene za prehrano ljudi. Opisuje lastnosti kalcijevega karbonata in določa zahteve ter ustrezne preskusne metode za kalcijev karbonat. Ponuja informacije o njegovi uporabi pri obdelavi vode.
General Information
- Status
- Published
- Public Enquiry End Date
- 30-May-2024
- Publication Date
- 20-May-2026
- Technical Committee
- IOVO - Water supply and waste water engineering
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 14-May-2026
- Due Date
- 19-Jul-2026
- Completion Date
- 21-May-2026
Relations
- Referred By
SIST EN 15798:2022 - Products used for the treatment of swimming pool water - Filter media - Effective Date
- 06-May-2026
- Effective Date
- 06-May-2026
- Effective Date
- 06-May-2026
- Effective Date
- 06-May-2026
- Effective Date
- 06-May-2026
- Effective Date
- 19-Jan-2023
Overview
SIST EN 1018:2026 specifies the requirements for calcium carbonate used in the treatment of water intended for human consumption. Developed by the Slovenian Institute for Standardization (SIST), this European Standard aligns with the latest industry practices for ensuring the safety, quality, and effectiveness of chemical products utilized in potable water treatment processes. The document sets precise quality specifications, details relevant test methods, and outlines proper handling and storage, ensuring that calcium carbonate supplied for drinking water applications meets stringent standards for purity and performance.
Key Topics
Product Definition and Forms: Calcium carbonate, also known as limestone or CaCO₃, is supplied in various forms, including granular, crushed, and slurry. The standard distinguishes between non-porous and porous grades based on physical and surface characteristics, aligning with the needs of different water treatment applications.
Physical and Chemical Properties: The standard covers essential properties such as composition, density, particle size, and solubility, providing a basis for quality assurance and compatibility with water treatment systems.
Purity Criteria: Comprehensive impurity limits ensure the product's suitability and safety for use in drinking water treatment. It stipulates allowable levels of heavy metals and other contaminants, supporting public health protection.
Test Methods: Reference is made to harmonized European (EN) and International (ISO) standards for sampling, analysis, and specific surface area determination (BET method), ensuring consistent and reliable quality control.
Labelling, Transportation, and Storage: The document outlines requirements for product identification, safe storage conditions, and transportation, with specific notes on the absence of hazardous classification for calcium carbonate.
Applications
Calcium carbonate is widely used in municipal and industrial water treatment. Key applications include:
- pH Adjustment: Calcium carbonate is commonly used to raise the pH of acidic waters, stabilizing water chemistry before distribution or further treatment.
- Mineralization: It is added to remineralize desalinised water (for example, after reverse osmosis) to meet drinking water standards, typically in combination with carbon dioxide.
- Filtration Media: Used as a filtration material to remove suspended solids and trace metals, contributing to the clarity and safety of potable water.
- Hardness Correction: Calcium carbonate helps adjust the hardness of soft waters to prevent pipe corrosion and maintain water stability.
The product's form (granular or slurry) and particle size are selected based on specific process requirements and treatment system designs.
Related Standards
Several standards complement the use of SIST EN 1018:2026 for calcium carbonate in drinking water treatment:
- EN 12485: Test methods for chemicals used in water treatment, including calcium carbonate and related substances.
- ISO 3165: Safety in sampling of chemical products for industrial use.
- ISO 6206: Vocabulary for sampling of chemical products.
- ISO 9277: Methods for determining the specific surface area of solids (BET method).
- EN 12902: Methods of test for inorganic supporting and filtering materials used in water treatment.
- Directive 2020/2184 (EU): European directive on the quality of water intended for human consumption, providing regulatory context.
- Regulation (EC) No 1272/2008 (CLP): Criteria for classification, labelling, and packaging of chemical substances, referenced for labelling requirements.
Practical Value
Implementing SIST EN 1018:2026 ensures that calcium carbonate used in drinking water treatment consistently meets safety and quality specifications. The standard supports water utilities, treatment plant operators, and chemical suppliers in compliance with European and national regulatory requirements, contributing to the overall safety and reliability of public water supplies. By adhering to clear physical, chemical, and procedural criteria, stakeholders can achieve effective water treatment outcomes while minimizing risks to consumer health.
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Frequently Asked Questions
SIST EN 1018:2026 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Chemicals used for treatment of water intended for human consumption - Calcium carbonate". This standard covers: This document is applicable to calcium carbonate used for treatment of water intended for human consumption. It describes the characteristics of calcium carbonate and specifies the requirements and the corresponding test methods for calcium carbonate. It gives information on its use in water treatment.
This document is applicable to calcium carbonate used for treatment of water intended for human consumption. It describes the characteristics of calcium carbonate and specifies the requirements and the corresponding test methods for calcium carbonate. It gives information on its use in water treatment.
SIST EN 1018:2026 is classified under the following ICS (International Classification for Standards) categories: 13.060.20 - Drinking water; 71.100.80 - Chemicals for purification of water. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 1018:2026 has the following relationships with other standards: It is inter standard links to SIST EN 15798:2022, SIST EN 12485:2017, SIST EN 14368:2015, SIST EN 12485:2011, SIST EN 14368:2004, SIST EN 1018:2021. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN 1018:2026 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-julij-2026
Kemikalije, ki se uporabljajo za pripravo pitne vode - Kalcijev karbonat
Chemicals used for treatment of water intended for human consumption - Calcium
carbonate
Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch -
Calciumcarbonat
Produits chimiques utilisés pour le traitement de l'eau destinée à la consommation
humaine - Carbonate de calcium
Ta slovenski standard je istoveten z: EN 1018:2026
ICS:
13.060.20 Pitna voda Drinking water
71.100.80 Kemikalije za čiščenje vode Chemicals for purification of
water
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 1018
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2026
EUROPÄISCHE NORM
ICS 71.100.80 Supersedes EN 1018:2021
English Version
Chemicals used for treatment of water intended for human
consumption - Calcium carbonate
Produits chimiques utilisés pour le traitement de l'eau Produkte zur Aufbereitung von Wasser für den
destinée à la consommation humaine - Carbonate de menschlichen Gebrauch - Calciumcarbonat
calcium
This European Standard was approved by CEN on 20 March 2026.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1018:2026 E
worldwide for CEN national Members.
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Description . 6
4.1 Identification . 6
4.1.1 Chemical name . 6
4.1.2 Synonym or common name . 6
4.1.3 Relative molecular mass . 6
4.1.4 Empirical formula . 6
4.1.5 Chemical formula . 6
4.1.6 CAS-Registry Number . 7
4.1.7 EINECS reference . 7
4.2 Commercial form . 7
4.3 Physical properties . 7
4.3.1 Appearance . 7
4.3.2 Density . 7
4.3.3 Solubility . 7
4.3.4 Vapour pressure . 7
4.3.5 Boiling point at 100 kPa . 7
4.3.6 Melting point . 7
4.3.7 Specific heat . 7
4.3.8 Viscosity, dynamic . 7
4.3.9 Critical temperature . 8
4.3.10 Critical pressure . 8
4.3.11 Physical hardness . 8
4.3.12 Particle size . 8
4.4 Chemical properties . 8
5 Purity criteria . 8
5.1 General. 8
5.2 Composition of commercial product . 8
5.3 Impurities and main by-products . 9
5.4 Chemical parameters. 9
6 Test methods . 9
6.1 Sampling . 9
6.2 Analyses. 9
7 Labelling - Transportation - Storage . 10
7.1 Means of delivery . 10
7.2 Labelling according to the EU legislation . 10
7.3 Transportation regulations and labelling . 10
7.4 Marking . 10
7.5 Storage . 10
7.5.1 Long term stability . 10
7.5.2 Storage incompatibilities . 10
Annex A (informative) General information on calcium carbonate . 11
A.1 Origin . 11
A.1.1 Raw materials . 11
A.1.2 Manufacturing process . 11
A.2 Use . 11
A.2.1 Function . 11
A.2.2 Form in which it is used . 11
A.2.3 Treatment dose . 11
A.2.4 Means of application. 11
A.2.5 Secondary effects . 11
A.2.6 Removal of excess product . 12
A.3 Rules for safe handling and use . 12
A.4 Emergency procedures . 12
A.4.1 First aid . 12
A.4.2 Spillage . 12
A.4.3 Fire . 12
Annex B (normative) Sample preparation and testing of specific surface of calcium
carbonate . 13
B.1 Sample preparation . 13
B.2 Testing . 13
B.3 Criteria for non-porous and porous calcium carbonates . 13
Bibliography . 14
European foreword
This document (EN 1018:2026) has been prepared by Technical Committee CEN/TC 164 “Water supply”,
the secretariat of which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publ
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