Analytical Services

Private water samples should be collected, transported and tested within the scope of accreditation; further details about these requirements can be found in information letter 05/2013 which, amongst other things, state that the minimum regulatory requirement is for all sampling, transport and analysis of drinking water, supplied under these Regulations, to be UKAS accredited under ISO/IEC 17025 to the Drinking Water Testing specification (DWTS).

A list of companies including laboratories that are UKAS accredited under ISO/IEC 17025 to the Drinking Water Testing specification (DWTS) and therefore approved to carry out drinking water sampling, transportation and analysis under these Regulations can be found below. The companies and laboratories listed here may be accredited for some but not all drinking water tests and services.  All drinking water test results and other services, such as sampling and transportation, should be accredited including when subcontracted.

The revision to the agreement between DWI and UKAS forms the basis of the UKAS Drinking Water Testing Specification (Lab 37) which is available on the UKAS website.

The nearest DWTS accredited company can be found by following this link to the UKAS website and entering your postcode.

Details of radioactivity drinking water analysis laboratories are available and will be updated with additional information/laboratories should this become available.

A list of organisations that carrying out drinking water testing, and report private water test results electronically, and compatibly with local authority annual returns; showing their accreditation status for drinking water testing *

Organisation

Accreditation Status

Electronic Reporting in DWI format

UKAS No.

Sampling

Analysis

 

Affinity Water Shared Services Ltd

1758

 

ISO17025 DWTS

ISO17025 DWTS

YES

ALS Life Sciences Ltd

0996

 

ISO17025 DWTS

YES

Latis Scientific

2279

 

ISO17025

YES

Northumbrian Water Ltd

1181

ISO 17025 DWTS

ISO17025 DWTS

YES

South East Water Ltd trading as South East Water Scientific Services

1579

ISO 17025 DWTS

ISO17025 DWTS

YES

United Utilities Scientific Services

1494

ISO 17025 DWTS

ISO17025 DWTS

YES

 

A list of organisations carrying out drinking water testing; showing their accreditation status for drinking water testing *

 

Organisation

Accreditation Status

Electronic Reporting

UKAS No.

Sampling

Analysis

 

Aberdeen City Council

1325

 

 

ISO17025 DWTS
NO

Agri-Food and Biosciences Institute Northern Ireland

1279

 

 

ISO17025 DWTS
NO

ALS Environmental Ltd - Coventry

1314

 

ISO17025 DWTS

ISO17025 DWTS
NO

ALS Environmental Ltd - Wakefield

4409

 

 

ISO17025 DWTS
NO

Anchem Laboratories Ltd

0934

Not Accredited for DWTS

Not Accredited for DWTS
NO

Anglian Water Services Ltd

1223

 

ISO17025

ISO17025 DWTS
NO
Bio-Search (NI) Ltd

1369

 

 

ISO17025 DWTS
NO
Derwentside Environmental Testing Services Ltd

2139

ISO17025

ISO17025
NO
Dŵr Cymru Cyfyngedig

7742

 

ISO17025 DWTS

ISO17025 DWTS
NO
Eclipse Scientific Group Limited trading as ALS Food and Pharmaceutical

1282

 

 

ISO17025 DWTS
NO

Environment Agency - Nottingham

0754

 

ISO17025

NO

Eurofins UK 2016 Ltd

9658

 

 

ISO17025
NO
Glasgow City Council

1278

 

 

ISO17025 DWTS
NO
Index Microbiology

8229

 

 

ISO17025 DWTS
NO
Initial Projects Ltd trading as Enitial

4485

ISO17025   NO
Lancashire County Scienfic Services

0625

 

ISO17025
NO
LGC Ltd

0003

 

ISO17025 DWTS
NO

Marine Biological and Chemical Consultants

1562

 

ISO17025

NO

Mercian Science Ltd

2450

 

ISO17025

NO

Minton, Treharne and Davies Ltd

0077

 

ISO17025

NO

Northern Hygiene Laboratories Ltd

1463

 

ISO17025

NO

Northern Ireland Water

1835

 

 

ISO17025 DWTS

NO

Northern Ireland Water

2148

 

 

ISO17025 DWTS

NO

Pathology Management Services

1736

 

ISO17025

NO

Princess Royal Hospital Brighton and Sussex University Hospitals NHS Trust, Environmental Microbiological Unit

1970

 

ISO17025

NO

Public Health England - Birmingham

1375

 

ISO17025

NO

Public Health England - London

4063

 

ISO17025

NO

Public Health England - Preston

1496

 

ISO17025

NO

Public Health England - Porton

1645

 

ISO17025

NO

Public Health England - York

2724

 

ISO17025

NO

Public Health Wales Bangor

1817

 

ISO17025

NO

Public Health Wales Cardiff

1591

 

ISO17025

NO

Public Health Wales Microbiology Carmarthenshire

1810

 

ISO17025

NO

Scientific Analysis Laboratories Ltd

1549

 

ISO17025
NO
Scottish Water

1565

 

ISO17025 DWTS

ISO17025 DWTS
NO
Serco Limited

2252

 

ISO17025 DWTS

ISO17025 DWTS
NO

Severn Trent Water Ltd

1229

 

ISO17025 DWTS

ISO17025 DWTS
NO
Somerset Scientific Services

0369

 

ISO17025
NO

South West Water 1361

4591

1361

4591

ISO17025 DWTS

ISO17025 DWTS
NO
Staffordshire Scientific Services

1692 

 

ISO17025
NO
Stansted Laboratories Ltd  

2266

 

ISO17025
NO
Sutton and East Surrey Water plc  

0976

 

ISO17025 DWTS

ISO17025 DWTS
NO
Tayside Scientific Services

1639

 

 

ISO17025 DWTS
NO

Thames Water Utilities Ltd - 0677

1572

0677

1572

ISO17025 DWTS

ISO17025 DWTS
NO
The City of Edinburgh Council

1005

 

 

ISO17025 DWTS
NO

Wessex Water Scientific Centre

0905

 

ISO17025 DWTS

ISO17025 DWTS

NO

Worcestershire Scientific Services

0627

 

Not Accredited for DWTS

Not Accredited for DWTS

NO

* Please contact dwi.enquiries@defra.gsi.gov.uk if your test laboratory should be included, or the information needs updating, quoting the UKAS accreditation number.

 

 

Page reviewed: 17 July 2017
Page modified: 7 September 2017

Drinking Water Inspectorate