SEWERAGE CONTRACTOR
INFORMATION PACK
August 2015
Anglian Water Sewerage Contractor Information Pack
Version 6 – August 2015
Sewerage contractor
Information pack
This pack has been compiled to provide guidance for Sewerage
Contractors that are included on the Anglian Water ‘Sewerage Contractors
List’ for direct sewer connections, namely junction insertion/saddle
connections and connections via new and existing manholes.
The pack includes information on the following:
Section 1
Sewer connection application procedure.
Section 2
Completion of the Method Statement form.
Section 3
Technical specification and standards.
Section 4
Entry into Anglian Water confined spaces.
Section 5
Lateral drain adoption.
Section 6
Action to be taken in the event of non-compliance.
Section 7
List of associated documents.
Section 8
Summary of key points for quick reference.
Anglian Water Sewerage Contractor Information Pack
Version 6 – August 2015
Section 1 - Sewer connection application procedure
Any person that requires a direct or indirect connection to the public
sewerage system is required to make an application to Anglian Water
under Section 106 of the Water Industry Act 1991. Once Anglian Water
receives the application, it will be assessed to ensure the proposals are
acceptable and when we are satisfied that this is the case, we will issue an
approval letter to the customer.
It is an offence for a sewer connection to be made without our
approval, so please ensure that you obtain a copy of the relevant
approval letter from the customer before you agree to provide a
quotation for the proposed works.
Once approval for a direct connection has been granted we will require a
completed Method Statement to demonstrate that you have considered
the hazards associated with the works and that you are able to carry out
the works safely. Again you should seek proof of our approval from the
customer before completing the Method Statement, as the method of
connection will not have been agreed until approval is granted.
Once the Method Statement form has been received we will check to
ensure that the customer’s application has been approved and if this is
the case the form will be passed to the Drainage Technician for the area.
If our approval has not been granted, the form will be held in the office
and any proposed connection date entered on the form will be deemed
invalid.
When the Drainage Technician has received the form they will contact you
to discuss the proposed works and the contents of the Method Statement.
When the Drainage Technician is satisfied that the Method Statement is
adequate the date of the connection/inspections can be formally agreed.
Please note that the Drainage Technician will not ‘approve’ the Method
Statement, as the responsibility for carrying out the works safely is yours
and not Anglian Water’s.
Anglian Water reserves the right to make a charge for abortive
site visits so please ensure that any appointments made with our
site staff for inspections or permits are honoured. The abortive
site visit charge will be made in accordance with the current
version of our charges leaflet, which is available on request.
Guidance regarding the completion of the Method Statement is provided
within Section 2.
Anglian Water Sewerage Contractor Information Pack
Version 6 – August 2015
Section 2 - Completion of the Method Statement
form
The completion of a Method Statement is mandatory for all direct sewer
connections as it demonstrates to us that you have considered the
hazards associated with the works and that you are able to carry out the
works safely.
The information contained within this section has been provided as a
guide to completing the Method Statement form.
Section 1 – applicant/site address
Within this section please provide the applicant’s name and the address of
the site/premises to be connected. Please ensure that the details entered
on this section of the form are consistent with those indicated on the
Anglian Water approval letter.
Section 2 – contractor’s details
Please add your company’s details to this section of the form.
It is imperative that the work supervisor’s details are those of the person
that will be supervising the proposed connection works, covered by the
Method Statement. Once the Method Statement has been issued to
Anglian Water, the Drainage Technician will make contact with the person
nominated on this part of the form.
The question relating to inclusion on Anglian Water’s sewerage contractors
list must be answered, however, there is no requirement to provide the
documentation listed below this question if you are on the list.
Section 3 - scope of works
Section 3a of the form requires the method of connection to be entered
and this will only have been agreed once Anglian Water has approved the
Sewer Connection application.
Section 3b of the form requires a detailed description of the works to be
undertaken in making the physical connection to the public sewer. Within
this section we require a breakdown of the tasks that will be carried out to
make the physical connection in the order that they will occur. As an
example for a junction insertion we will require the tasks undertaken from
the time the sewer is exposed until the connection is made and backfilling
is due to commence.
Section 3c of the form requires information relating to the hazards
associated with making the physical connection and the proposed
measures required to control each hazard. For the avoidance of doubt a
hazard is anything that has the potential to cause harm eg toxic gases
and the control measure is what you will do to reduce the likelihood of
occurrence and the severity should an incident occur. These should relate
to the task, the location in which the task is undertaken and the
equipment to be used.
Anglian Water Sewerage Contractor Information Pack
Version 6 – August 2015
As a guide we would expect the following hazards to be listed within this
section:
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Confined spaces – toxic, explosive and suffocating gases
Flows within the sewerage system.
Working within the vicinity of sewage.
Please note that the above list is in no way exhaustive and that the
information provided must be specific to the individual circumstances of
the proposed works.
Section 3d requires a proposed connection date. The proposed
connection date must provide a minimum of five days notice and you
must allow at least two days for the form to reach us in the postal system.
Should adequate notice not be given the connection works may be
delayed. Method Statements may be issued by fax to the Colchester or
Northampton Drainage Offices on 01206 289219 and 01604 446902
respectively.
It will be the responsibility of the contractor to ascertain from the various
Statutory Undertakers the position of all their underground apparatus and
take all precautions necessary to support and protect such apparatus
during the course of the works.
Anglian Water Sewerage Contractor Information Pack
Version 6 – August 2015
Section 3 - Technical specification and standards
Direct connections can be made to the public sewer by four main methods
depending upon the size of the sewer and individual circumstances. These
are junction insertion, saddle connection, connection to an existing
manhole and construction of a new manhole. Backdrop connections are
not generally approved unless there are extenuating circumstances and
must not be constructed without our prior approval.
Junction insertion
This method is to be used predominantly for connecting to sewers of
300mm diameter or less except where otherwise agreed with Anglian
Water.
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The inserted junction shall be joined to the existing sewer by
flexible couplings complying with Water Industry Specification No.
4-41-01. The WIS specification issued for flexible couplings
comprises a moulded elastomeric sleeve with two stainless steel
clamping bands and a stainless steel shear band.
The section of sewer to be removed must be 20mm longer than the
junction pipe to be inserted. A purpose made chain cutter or disc
saw must be used for the cutting operation.
The existing sewer must not be cut within 500mm of a joint unless
it is intended to remove that joint.
The cut section(s) of sewer pipe shall be kept available on site for
inspection by the Anglian Water Drainage Technician
The existing sewer and new junction must be surrounded with
granular material before backfilling commences. The granular
material shall be in accordance with Table A.2 of Information and
Guidance Note No. 4-08-01 and should be a minimum of 300mm
above the existing sewer. The use of pea gravel is not acceptable
i.e. single size material graded from 9.6mm (3/8”) downwards.
Junction insertions are not to be fixed to the top of the pipe/sewer, ideally
these should be fixed in the ten o’clock or two o’clock position.
Saddle connections (Fabekun or similar approved)
Saddle connections will predominantly only be permitted on existing
concrete or brick sewers or where Anglian Water give permission for
technical or safety reasons.
The hole for the saddle is to be core drilled only; no other method (i.e.
jack hammer or steel saw) may be used for creating the opening. The
saddle shall be fixed to the existing sewer pipe with an epoxy mortar
(resin hardener base with coarse sand mixture). After the curing time a
20 N/sq mm sulphate resisting concrete surround is to be placed around
the saddle connection. Backfilling of the trench shall not take place until
the saddle is fixed firmly and will not be dislodged by backfilling and has
been inspected and approved by the Anglian Water Drainage Technician.
Anglian Water Sewerage Contractor Information Pack
Version 6 – August 2015
Saddles are not to be fixed to the top of the pipe/sewer; ideally these
should be fixed in the ten o’clock or two o’clock position.
Manhole connections
When a connection into an existing public sewer manhole is approved,
specific guidance will be given. However, in general the following
procedure will apply:
 The manhole should be core drilled and a short length of pipe
inserted. All connections should be made soffit to soffit. The short
pipes will be clayware or concrete, the use of porous concrete or
plastic pipes is not acceptable.
 An appropriate channel bend (i.e. slipper) should be used to direct
flow into the sewer. The channel bend must be of clayware.
 A rocker pipe shall be joined to the short pipe built into the
manhole. The length of the rocker pipe shall be 600mm for a
connection pipe not greater than 450mm in diameter.
Backdrop manhole connections
Backdrop manhole connections will only be approved where there are
extenuating technical reasons for their use. When a connection requiring
a backdrop into an existing public sewer manhole is approved specific
guidance will be given.
New manholes
Where the connection is to be made by constructing a new manhole it
shall be built in accordance with the attached drawings, except where a
special manhole is required in which case details will be supplied by
Anglian Water.
Manhole covers to be BS EN 124 Class D400, regardless of location unless
otherwise agreed.
Pumped connections
It is not acceptable for a private pumping/rising main to be connected
directly to the public sewer. The main must be connected to a privately
owned length of gravity sewer, which is in turn connected to a new or
existing manhole on the public sewer.
Dealing with flows
For smaller diameter pipelines with relatively low flows it may be possible
to stopper off the sewer at the upstream manhole provided that the
stopper is not inserted until:
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A permit to enter has been obtained in accordance with Section 4 of
this document.
Work on cutting the sewer is about to commence and that adequate
checks are made during the course of the work to ensure that
flooding will not occur upstream of the works.
A rope shall be fitted to an expandable stopper and tied to a manhole step
iron or other suitable fixing point within the manhole. This will prevent
the stopper blocking the pipeline should it loosen during the course of the
Anglian Water Sewerage Contractor Information Pack
Version 6 – August 2015
works. After the connection has been made the stopper shall be loosened
and the pressure allowed to reduce from behind the stopper. This will
then enable it to be removed when it is considered safe to do so.
For larger diameter sewers with high flows it will be necessary to over
pump from the upstream to the downstream manhole. The contractor
carrying out the work must ensure, before work commences, that a pump
with sufficient capacity to deal with normal flow, is available together with
adequate lengths of suction and delivery hoses for over pumping.
No cutting of any type of public sewer shall be started if heavy rainfall is
likely to occur before completion of the connection.
Trunk sewers and special sewers
Should a connection be required to a trunk foul sewer or other special
sewer a detailed method statement will be required for the connection
works. The method statement will have to be submitted and agreed by
Anglian Water prior to the works being commenced.
The following are classified as trunk sewers or special sewers:
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Large diameter sewers over 600mm diameter.
Brick culverts – see figure C.13.2 attached
Box culverts.
Non-circular sewers.
Sewers of non-standard materials i.e. pitch fibre, cast iron,
asbestos cement, plastic.
Vacuum sewers
Vacuum sewerage systems differ from conventional systems in that
connections are only permitted to certain parts of the system, normally
the vacuum pot itself. The number of connections allowed to each pot is
limited and therefore the point of connection will be specified by Anglian
Water. In the case of vacuum connections it is vitally important that early
contact is made with us, as a connection made to the wrong part of the
system will cause Anglian Water serious operational problems.
Should the nearest available pot not have capacity for a new connection,
Anglian Water will be required to construct a new pot and we will employ
a specialist contractor to carry out these works. Once the new pot has
been constructed we will advise the applicant that the connection point is
available.
Excavation
You are required to excavate down to the public sewer at the agreed
connection point and fully expose a sufficient length of pipe to enable the
work to be carried out efficiently. Should you find that the public sewer is
damaged, you should immediately notify the relevant Developer Services
team and an Anglian Water representative will visit the site and instruct
you how to proceed.
Anglian Water will not be held responsible for any delay or additional costs
incurred due to defects in the sewer.
Anglian Water Sewerage Contractor Information Pack
Version 6 – August 2015
Where the excavation is within the public highway the full requirements of
the New Roads and Street Works Act, Traffic Management Act and the
specification for the reinstatement of openings in highways must be met.
You are also required to serve any relevant notices required under the
New Roads and Street Works/Traffic Management Acts.
Anglian Water Sewerage Contractor Information Pack
Version 6 – August 2015
Section 4 - Entry into Anglian Water confined spaces
The Anglian Water management of confined space procedure allows entry
into Anglian Water confined spaces without a ‘permit to enter’ being
issued by a trained member of Anglian Water personnel. In such cases a
Site Access Authorisation Form (SAAF) is issued and this effectively signs
responsibility for the confined space over to the contractor.
Please note that this does not apply to sewer connections and that
a ‘permit to enter’ is required in all cases.
The trench that is excavated to carry out a junction insertion/saddle
connection is not considered to be an Anglian Water confined space, so we
are not required to issue a permit to enter in this instance. The trench,
however, will be a confined space and you are required to employ suitably
qualified and competent personnel to make the entry. You are also
required to consider and control the hazards that are generally associated
with confined space manhole entries, especially after the public sewer has
been cut/opened.
Contractor’s personnel that are trained permit writers may issue follow on
permits for subsequent entries into the initial confined space, providing
the conditions within the confined space do not change. Please note that
an Anglian Water permit writer must in all cases issue the first permit
and that the completion of the Anglian Water Confined Space Assessment
does not deem the cardholder competent to issue permits.
Confined space categorisation and summary of personnel and
equipment requirement forms
These forms have been introduced to allow confined spaces to be
categorised and to give guidance on the number of trained personnel and
safety equipment required to make the entry. Copy forms are provided
with these guidance notes.
We recommend that the forms be used by contractors as a guide;
however, the final decision regarding categorisation and safety
equipment/ trained personnel will be made by the Anglian Water permit
writer on the day the permit is issued. A minimum of five working days
notice is required for all permits and we strongly recommend that contact
be made with the permit writer before the day of entry to discuss in
advance the permit requirements. Please note that assistance given at
this stage is provided as a guide only and that the permit requirements
may change once the permit writer has inspected the confined space on
site.
Anglian Water Sewerage Contractor Information Pack
Version 6 – August 2015
It is imperative that a minimum of five working days notice be
given for all permit requests as this allows time for internal
consultation regarding the sewerage system and any other issues
that may influence the content of the permit. Should adequate
notice not be given we may be unable to issue the permit.
Failure to provide the required safety equipment with the
appropriate certification and/or the correct number of trained
personnel will result in refusal to issue the permit and an abortive
site visit charge will be made.
If you are unsure who the permit writer is for your area, please contact
either the Colchester Developer Services Drainage office on 01206 289470
or the Northampton Developer Services Drainage office on 01604 446688.
Rescue arrangements
Where the Confined Space Categorisation Form indicates ‘R’; formal
rescue arrangements must be put in place, however, this does not
necessarily dictate that a ‘rescue team’ is required.
A man-riding winch will generally be considered as a suitable means of
rescue for situations where the entrant can remain attached to a line at
all times. Please note that the use of a man-riding winch as rescue
equipment requires a minimum of two trained personnel to act as top
people.
Where the entrant cannot remain attached to a line at all times, other
rescue arrangements must be considered and it is likely that the confined
space will be categorised as ‘very high risk’ and an advanced permit writer
will be required. In these cases it is imperative that early contact is made
with Anglian Water on the numbers listed above.
Trained personnel requirements
Trained personnel must be able to demonstrate they have obtained the
City & Guilds 6150 Unit.
 Contractors must be trained and assessed under the City & Guilds
6150 scheme at an accredited training centre. (The City & Guilds
Utilities Operations Scheme Existing Unit 5831 qualification remains
acceptable until May 2012).
 If you have any queries please email:
Anglian_Water_Training@anglianwater.co.uk
Certificates/cards provided as proof of training must be originals (not
copies) and in date.
Anglian Water Sewerage Contractor Information Pack
Version 6 – August 2015
Section 5 – Lateral drain adoption
Lateral drain adoption
From the 1 April 2010 the S106 sewer connection application form allows
customers to apply for the adoption of their lateral drain by Anglian
Water.
The lateral drain is the section of drain from the property boundary to the
point of connection with the public sewer and once adoption has taken
place the drain becomes a public lateral drain (PLD).
To be suitable for adoption the lateral drain must be designed and
constructed in accordance with the details indicated on the ‘PLD guidance
document’, which is provided in this pack and is also available on our
website http://www.anglianwater.co.uk/developers/sewer-connection
The lateral drain must be made available for inspection by Anglian Water
during construction and Anglian Water are required (where possible) to
pressure test the drain once it is completed.
If the connection is made directly to the public sewer, i.e. without a
manhole, a retrospective pressure test will not be possible and a CCTV
survey, including a DVD and full report will be required at your client’s
expense. We will also attend site to inspect the demarcation chamber.
Please note that the lateral drain is laid as a private pipe until it is adopted
by Anglian Water and therefore the method statement provided by you
does not need to include the works required to lay the drain up to the
point of connection with the public sewer.
The lateral drain does not need to be constructed in accordance with the
PLD guidance document, unless the customer has applied for adoption,
and approval for the same has been granted by Anglian Water.
It is therefore imperative that you verify with your client exactly what has
been approved by Anglian Water before providing a quotation for the
works.
Anglian Water Sewerage Contractor Information Pack
Version 6 – August 2015
Section 6 - Action to be taken in the event of noncompliance
The ‘Sewerage Contractors list’ is provided to assist customers in selecting
a contractor with the relevant experience and expertise to make their
proposed connection. The list is issued to all customers that apply for a
sewer connection; however, we are under no obligation to provide such a
list or to retain your company’s details on it. Therefore should you fail
to comply with any of the requirements set out above, your details
may be removed and you will no longer be eligible to carry out
further works on the public sewerage system.
The list is maintained by the team at Developer Services who can be
contacted on developerservices@anglianwater.co.uk . Should any of the
documentation pass out of date, you will be temporarily removed from the
list until current documentation is provided.
Further information can be found on our website
http://www.anglianwater.co.uk/developers/sewer-connection/seweragecontractors.aspx
Sewerage contractor search facility:
https://www.anglianwater.co.uk/developers/sewer-connection/searchcontractors.aspx
Anglian Water Sewerage Contractor Information Pack
Version 6 – August 2015
Section 7 - List of associated documents
Method Statement form
Confined space forms
 Anglian Water Confined Space Categorisation form.
 Anglian Water Summary of Personnel and Equipment requirements.
Standard adoptable sewerage details
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Standard adoptable sewerage details guidance note
A1 Sheet - Standard adoptable sewerage details
Fig C.13.2 - Recommended method of making a connection to a brick
sewer.
Anglian Water Sewerage Contractor Information Pack
Version 6 – August 2015
Section 8 - Summary of key points for quick
reference

Ensure that you receive a copy of Anglian Water’s approval letter
from your customer prior to submitting your Method Statement.

Do not make arrangements to commence works until you have
discussed the Method Statement and agreed a connection date with
our Drainage Technician.

The proposed connection date must give Anglian Water a minimum
of five working days notice (not including weekends) with a two
working day allowance for the Method Statement to reach us in the
postal system.

A permit to enter must be issued by a trained member of Anglian
Water personnel for all entries into Anglian Water confined spaces.

Contact the Anglian Water permit writer in advance of the
connection date to discuss the likely permit requirements.

Anglian Water is under no obligation to retain your company’s
details on the Sewerage Contractors list and non-compliance with
our requirements may result in your removal from the list.

If you are unsure of Anglian Water’s requirements or the status of a
sewer connection application please contact one of our local offices
on the numbers below.
Drainage East
Colchester Office
Tel: 01206 289470
Anglian Water Sewerage Contractor Information Pack
Version 6 – August 2015
Drainage West
Northampton Office
Tel: 01604 446688
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Standard adoptable sewerage detail
Guidance notes
This ‘Standard detail’ has been provided to assist with the design of adoptable
sewerage systems and in particular the following:
 Sewerage systems constructed for adoption under Section 104 of the Water
Industry Act 1991 (WIA).
 Sewerage systems to be constructed as public sewers under the terms of a
Section 30 Works Agreement.
 Sewer Diversions constructed under Section 185 Agreement of the WIA.
 New manholes constructed to connect new properties to the public sewer as part
of an application under Section 106 of the WIA.
The detail is available to download from the Developer Services website
www.anglianwater.co.uk/developers and will preclude the need for you to draft your
own standard details for approval by Anglian Water. The detail can also be
downloaded and issued to contractors on site.
For Section 104, 30 and 185 applications simply stipulate with your application that
the sewerage system will be designed in accordance the Standard Adoptable
Sewerage Detail (DS/SFA/001 Rev.C) and we will list the detail within the legal
agreement once the overall design has been approved. There is no need to provide
a copy of the detail with each application as our Drainage Technicians will carry a
copy and will ensure compliance with the detail during the site inspection process.
For 106 applications simply stipulate with your application that any new manholes
will be designed in accordance with the Standard Adoptable Sewerage Detail
(DS/SFA/001 Rev.C) and our Drainage Technicians will verify compliance with the
detail during the site inspection process. You will also need to stipulate, which
manhole detail is proposed for each individual new manhole.
Manhole details
For Section 104, 30 and 185 applications there remains a requirement for you to
indicate where the individual manhole types will be used, by indication on the long
sections or by means of a manhole schedule.
Should your design include any form of non-standard construction a detail must be
included with your submission for approval by Anglian Water before construction
commences on site.
Backdrop details
Please note our requirement for these to be designed out where possible and the
preference for the ramp over the vertical backdrop where a backdrop cannot be
avoided. Where a backdrop has been included in the design, please ensure that
justification is included within your application.
Pipe bedding details
The details indicated are Anglian Water’s preferred method of bedding adoptable
sewers. Should you choose to use the Standard Detail, there is no requirement to
indicate all pipe bedding on the long section, however, we will require confirmation
on the long section of where concrete slab protection is proposed.
Updated July 2015