Severn Trent Water

1229 Accredited to ISO/IEC 17025:2017 Schedule of Accreditation issued by United Kingdom Accreditation Service 2 Pin e Tre e s, Ch e rts ey La n e , Sta ine s -u po n-Tha me s , TW18 3 HR, UK Severn Trent Water Limited Issue No: 113 Issue date: 17 October 2025 Testing performed by the Organisation at the locations specified Assessment Manager: LM8 Page 9 of 13 Materials/Products tested Type of test/Properties measured/Range of measurement Standard specifications/ Equipment/Techniques used Location Code WATERS (cont’d) Chemical Tests (cont’d) Potable, Raw, Surface and Groundwaters, Bottled water (Emergency Water, bought in) Turbidity Method 71008 using a manual turbidity meter and robotic determination B Potable, Raw, Surface and Groundwaters Organic Carbon/Non Purgeable Organic Carbon Method 71010 using combustion and NDIR gas analysis B Potable, Raw, Surface and Groundwaters, Bottled water (Emergency Water, bought in) Colour Method 71006 visible spectrometry and robotic determination B Potable, Raw, Surface and Groundwaters UV absorbance and % transmission Method 71014 using spectrometry B Potable, Raw, Surface and Groundwaters, Bottled water (Emergency Water, bought in) pH Electrical Conductivity Turbidity Colour Method 76017 using Skalar automated robot B