Watson-Marlow Limited, based in the United Kingdom, Bredel Hose Pumps BV, based in the Netherlands, and Watson-Marlow Alitea, based in Sweden, are all accredited to ISO9001. Watson-Marlow Limited is additionally accredited to ISO14001.

Watson-Marlow BV, based in The Netherlands, Watson-Marlow NV, based in Belgium, and Watson-Marlow Inc based in the United States of America are accredited to ISO9002.

SP and SPX hose pumps manufactured by Bredel Hose Pumps BV are certified to meet the Hygienic Equipment Design Criteria of the EHEDG (European Hygienic Engineering Design Group) standards.