The assignment involves the regular bulk deliveries of grafting and filtering sand to the cooperating water companies for the production of drinking water.

The assignment involves the regular bulk deliveries of grafting and filtering sand to the cooperating water companies for the production of drinking water.

Because the grafting and filtering sand to be supplied comes into direct contact with drinking water, the products to be supplied must comply with the most recent version of the 'Regulation on materials and chemicals for drinking and hot water supply' prescribed by the Dutch government. The products to be supplied must therefore be certified in accordance with the Assessment Guideline K240 (in which the KIWA Water Mark requirements are guaranteed). The transport of grafting and filtering sand must also meet strict requirements. The transport must comply with the Assessment Guideline K15001 (Kiwa ATD).

The assignment involves the regular bulk deliveries of grafting and filtering sand to the cooperating water companies for the production of drinking water.

Because the grafting and filtering sand to be supplied comes into direct contact with drinking water, the products to be supplied must comply with the most recent version of the 'Regulation on materials and chemicals for drinking and hot water supply' prescribed by the Dutch government. The products to be supplied must therefore be certified in accordance with the Assessment Guideline K240 (in which the KIWA Water Mark requirements are guaranteed). The transport of grafting and filtering sand must also meet strict requirements. The transport must comply with the Assessment Guideline K15001 (Kiwa ATD).