EN 752:2017/prA1
(Amendment)Drain and sewer systems outside buildings — Sewer system management
Drain and sewer systems outside buildings — Sewer system management
This European Standard specifies the objectives for drain and sewer systems outside buildings. It specifies the functional requirements for achieving these objectives and the principles for strategic and policy activities relating to planning, design, installation, operation, maintenance and rehabilitation. It is applicable to drain and sewer systems from the point where wastewater leaves a building, roof
drainage system, or paved area, to the point where it is discharged into a wastewater treatment plant or receiving water body.
The standard pays regard to the extremes of our changing climate and seeks to aknowledge the associated impacts on existing drain and sewer systems outside of buildings and futureproof associated aspects of those systems that are to be planned for and designed in the future. Drains and sewers below buildings are included provided that they do not form part of the drainage system for the building.
Entwässerungssysteme außerhalb von Gebäuden - Management von Abwassersystemen
No Scope Available.
Réseaux d’évacuation et d’assainissement à l’extérieur des bâtiments - Gestion du réseau d’assainissement
No Scope Available.
Sistemi za odvod odpadne vode in kanalizacijo zunaj zgradb - Upravljanje sistema za kanalizacijo - Dopolnilo A1
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2025
Sistemi za odvod odpadne vode in kanalizacijo zunaj zgradb - Upravljanje sistema
za kanalizacijo - Dopolnilo A1
Drain and sewer systems outside buildings - Sewer system management
Entwässerungssysteme außerhalb von Gebäuden - Management von
Abwassersystemen
Réseaux d’évacuation et d’assainissement à l’extérieur des bâtiments - Gestion du
réseau d’assainissement
Ta slovenski standard je istoveten z: EN 752:2017/prA1
ICS:
93.030 Zunanji sistemi za odpadno External sewage systems
vodo
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
EUROPEAN STANDARD
EN 752:2017
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
July 2025
ICS 93.030; 23.040.05
English Version
Drain and sewer systems outside buildings - Sewer system
management
Réseaux d'évacuation et d'assainissement à l'extérieur Entwässerungssysteme außerhalb von Gebäuden -
des bâtiments - Gestion du réseau d'assainissement Management von Abwassersystemen
This draft amendment is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 165.
This draft amendment A1, if approved, will modify the European Standard EN 752:2017. If this draft becomes an amendment,
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of
this amendment into the relevant national standard without any alteration.
This draft amendment was established by CEN 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.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 752:2017/prA1:2025 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
1 Modification to “Introduction” . 4
2 Modification to “Scope” . 5
3 Modification to Clause 2, “Normative references” . 5
4 Modification to Clause 3 “Terms and definitions” . 5
5 Modification to Clause 4.5 “Sustainable development” . 6
6 Modification to Subclause 5.1.1 “Introduction” . 6
7 Modification to Subclause 5.1.2 “Protection from sewer flooding” . 7
8 Modification to Subclause 5.1.9 “Watertightness” . 8
9 Addition of Subclause 5.1.15 “Resilience to climate change” . 8
10 Addition of Subclause 5.1.16 “Water- sensitive urban design” . 8
11 Add Subclause 5.1.17 “Blue green infrastructure” . 9
12 Modification to Subclause 5.2.2 “Environmental performance requirements” . 9
13 Modification to Subclause 5.2.3 “Hydraulic performance requirements” . 9
14 Modification to Subclause 5.3.1 “Introduction” . 9
15 Modification to 5.3.2.1 “Introduction” . 10
16 Modification to Subclause 6.2.7 “Hydraulic investigation” . 10
17 Modification to Clause 7 “Health and safety” . 10
18 Modification to Subclause 8.3.1 “Preliminary investigations” . 11
19 Modification to Subclause 8.3.2 “Layout and profile” . 11
20 Modification to Subclause 8.4.1 “General” . 11
21 Modification to Subclause 8.4.2 “Foul drains and sewers” . 11
22 Modification to Subclause 8.4.3.1 “General” . 11
23 Modification to Subclause 8.4.3.3 “Surface water drains and sewers” . 11
24 Modification to Subclause 8.5.5 “Combined sewer overflows and surface treatment”
................................................................................................................................................................... 11
25 Modification to Subclause 8.6.1 “Introduction” . 11
26 Modification to Subclause 8.7.4 “Access to drains and sewers” . 12
27 Modification to Annex A, A.14.1.2 (England) . 12
28 Modification to Annex D . 12
29 Modification to Bibliography . 12
European foreword
This document (EN 752:2017/prA1:2025) has been prepared by Technical Committee CEN/TC 165
“Waste water engineering”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
The principal changes in this amendment are broadly limited to various textual amendments and
additions relating to climate change.
1 Modification to “Introduction”
At the end of the 8th paragraph, add the following:
“Additionally, increased water resource scarcity or increased rainfall due to climate change determines
that rainwater recycling and sustainable discharge of stormwater should be a primary focus when
considering the planning, design, rehabilitation and management of drains and sewers outside of
buildings. Such approaches which will support drainage systems that serve local communities becoming
more sustainable and adaptive to the needs determined by our changing climate, through promoting
water sensitive urban development/design.”
In the 9th paragraph, replace “This concept” with “These concepts”, to read:
“These concepts are included in the approach of integrated sewer management.”
Replace the lists in the 12th and 13th paragraphs as follows:
“Design and construction standards include:
— EN 16932 (all parts), Drain and sewer systems outside buildings — Pumping systems,
— EN 16933 (all parts), Drain and sewer systems outside buildings — Design,
— EN 1295 (all parts), Structural design of buried pipelines under various conditions of loading,
— EN 1610, Construction and testing of drains and sewers,
— EN 12889, Trenchless construction and testing of drains and sewers,
— EN 15885, Classification and characteristics of techniques for renovation and repair of drains and
sewers.
Management and control standards include:
— EN 14654 (all parts), Drain and sewer systems outside buildings — Management and control of
activities.”
Replace Figure 1 with the following figure:
“
”
In the 2nd paragraph below Figure 1, replace “(No 305/2011)” with “(No xxx/2024)”
2 Modification to “Scope”
Add after the 2nd paragraph:
“This document pays regard to the extremes of the changing climate and seeks to acknowledge the
associated impacts on existing drain and sewer systems outside of buildings and futureproof associated
aspects of those systems that are to be planned for and designed in the future.”
3 Modification to Clause 2, “Normative references”
Replace “EN 13508-1, Investigation and assessment of drain and sewer systems outside buildings — Part 1:
General Requirements” with “EN 13508 (all parts), Drain and sewer systems outside buildings —
Investigation and assessment”
Replace “EN 14654-1, Management and control of operational activities in drain and sewer systems outside
buildings — Part 1: Cleaning” with “EN 14654 (all parts), Drain and sewer systems outside buildings —
Management and control of operational activities”.
Replace “prEN 16932 (all parts)” with “EN 16932 (all parts)”.
Replace “prEN 16933-2, Drain and sewer systems outside buildings — Design — Part 2: Hydraulic design”
with “EN 16933 (all parts), Drain and sewer systems outside buildings — Design”
4 Modification to Clause 3 “Terms and definitions”
Add the following new terms and definitions after 3.1, and renumber the subsequent definitions:
“3.2
climate change
long-term shifts in temperatures and weather patterns
Note 1 to entry: Such shifts can be natural, due to changes in the sun’s activity or large volcanic eruptions., however
since the 1800s, human activities have been the main driver of climate change, primarily due to the burning of fossil
fuels like coal, oil and gas
3.3
combined sewer overflow storm discharge
water discharged from a combined sewer overflow during heavy rainfall”
In the new definition 3.4 (former 3.2), add the following Note 1 to entry:
“Note 1 to entry: Design Working Life” can often be significantly longer than “design life” and is of critical
importance when calculating the longer-term resilience of drainage infrastructure, to, for example, climate change
impacts.”
[SOURCE: EN 1990:2002, modified to provide consistency with the terminology in EN 16323]”
Move definition 3.18 to after 3.4, so it becomes 3.5.
Add the following two new definitions at the end of the clause:
“3.23
sustainable urban drainage or blue green infrastructure
network of surface waters, groundwater, measures and facilities for stormwater management as well as
public and private green spaces.”
Note 1 to entry: Sustainable urban drainage or blue green infrastructure combines the issues concerns of water
management, urban planning, road and open space planning and climate protection in terms of function and design
3.24
water-sensitive urban design
land planning and engineering design approach which integrates the urban water cycle, including
stormwater, groundwater, and wastewater management and water supply, into urban design to minimise
environmental degradation and improve aesthetic and recreational appeal”
5 Modification to Clause 4.5 “Sustainable development”
Add the following new list item:
“d) can remain resilient to changes in weather patterns, extreme weather events, and other impacts
caused by climate change over its design working life.”
6 Modification to Subclause 5.1.1 “Introduction”
Replace Table 1 by the following Table:
“
Clause No Public health Occupational Environmental Sustainable
and safety health and safety protection development
Functional requirements relating to the system
5.1.2 Protection from XXX XX XXX XXX
sewer flooding
5.1.3 Maintainability XX XXX XX XX
5.1.4 Protection of XXX X XXX XX
surface receiving water
bodies
5.1.5 Protection of XXX — XXX XXX
groundwater
5.1.6 Prevention of XXX XXX XXX XXX
odours and toxic,
explosive and corrosive
gases
5.1.7 Prevention of noise XX XXX X X
and vibration
5.1.8 Structural integrity XXX XXX XXX XXX
and design working life
5.1.9 Watertightness XXX X XXX XX
Functional requirements relating to the management of the system
5.1.10 Sustainable use of — — XX XXX
products and materials
5.1.11 Sustainable use of — — XX XXX
energy
5.1.12 Maintaining the XXX — XXX X
flow
5.1.13 Not endangering XXX XXX X XXX
adjacent structures and
utility services
5.1.14 Inputs quality XX XXX XXX XX
5.1.15 Resilience to XXX X XXX XXX
climate change and
associated risks
5.1.16 Water-sensitive X — XXX XXX
urban design
5.1.17 Blue-green X — XXX XXX
infrastructure
Key
XXX is High; XX is Medium;
X is Low;
– is not related.
“
7 Modification to Subclause 5.1.2 “Protection from sewer flooding”
Replace the second sentence of the paragraph after the NOTE with the following:
“The hydraulic capacity shall allow for foreseeable increases in flow, including those from climate change
impacts, over the design working life of the system.”
Replace the sentence before the alphabetised list with the following:
“Other forms of flooding can also impact on the drain and sewer system, most of which are impacted by
a changing climate. These include”:
8 Modification to Subclause 5.1.9 “Watertightness”
Modify the second sentence as
...
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