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EVS 847-2:2026

Waterworks - Part 2: Water purification

General information

Valid from 03.08.2026
ICS Groups
13.060.01 Water quality in general 91.010.30 Technical aspects 91.140.60 Water supply systems
Directives or regulations
None
Changes from previous version
Olulisemad uuendused võrreldes standardi varasema versiooniga on järgmised: — korrigeeritud erialaseid termineid, lisatud erialastele terminitele inglisekeelne tõlge; — sisu viidud vastavusse uuenenud seadusandlusega, süstematiseeritud standardi sisu, täiendatud illustreerivat skeemi; — lisatud varustuskindlus ja riskihindamine ning küberturvalisus; — lisatud 3D/BIM ehitusprojekti koostamisel; — lisatud teatmelisad C (Soovituslik ruumide jaotus veetöötlusjaamas) ja D (Küberturvalisuse ja toimepidevuse juhised).

Standard history

Status
Date
Type
Name
03.08.2026
Main
EVS 847-2:2026
03.02.2016
Main
EVS 847-2:2016

This Estonian standard applies to the design, construction, operation and maintenance of water treatment plants for water supply systems, including public water supply systems. The aim of the standard is to provide instructions for the design and operation of water treatment plants to ensure the quality and safety of drinking water in accordance with the current Estonian legislation and European Union directives.
Water treatment includes water abstraction, water treatment, water storage and transmission (distribution) to the consumer (see Figure 1). When selecting a water abstraction-water source, be guided by the relevant legislation and standard EVS 847-1, when treating water, be guided by the standard EVS 847-2, when distributing water to the consumer, be guided by the relevant legislation and standards EVS 921 and EVS 835.
Annexes A to D of the standard contain recommended supporting material.

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Standards designation

EVSEstonian standard
ENEuropean standard (published by an CEN or CENELEC)
EN ISOInternational standard adopted as an European standard
ISOInternational Organization for Standardization’s standard
IECInternational Electrotechnical Commission’s standard
HDCENELEC’s harmonisation document
EVS-ENEuropean standard implemented in Estonia
EVS-EN ISOInternational standard adopted in Europe and implemented in Estonia
EVS-EN ISO/IECInternational standard/International electrotechnical standard adopted in Europe and implemented in Estonia
EVS-IECInternational electrotechnical standard implemented in Estonia
EVS-ISO International standard implemented in Estonia
 
A, AMDamedment
+Aa full standard plus the amendment
/Aonly amendment
COR, ACcorrigendum
+CORa full standard plus the corrigendum
NAnational annex
+NAa full standard plus the national annex
/NAonly national annex
TStechnical specification
TRtechnical report
CWAagreement, developed by a CEN or CENELEC
prEVS-EN (etc)draft standard
 
etthe standard is in Estonian only
enthe standard is in English only
et-enthe standard is in Parallel text Estonian-English