KTW (Kuvomerezeka kwa kuyesa ndi kuyesa kwa magawo omwe si azitsulo mumakampani amadzi akumwa aku Germany)

KTW (Kuyesa ndi Kuyesa Kuvomerezeka kwa Zigawo Zopanda Zitsulo ku Germany Drinking Water Industry) ikuyimira dipatimenti yovomerezeka ya Germany Federal Health Department pakusankha zinthu zamadzi akumwa ndikuwunika zaumoyo. Ndi labotale ya Germany DVGW. KTW ndiulamuliro wovomerezeka womwe unakhazikitsidwa mu 2003.

Ogulitsa akuyenera kutsatira DVGW (German Gas and Water Association) Regulation W 270 "Kufalitsa tizilombo toyambitsa matenda pazinthu zopanda zitsulo". Muyezo umenewu umateteza makamaka madzi akumwa ku zonyansa zamoyo. W 270 ndiyenso chizolowezi chokhazikitsa malamulo. Mayeso a KTW ndi EN681-1, ndipo muyeso wa W270 ndi W270. Makina onse amadzi akumwa ndi zida zothandizira zomwe zimatumizidwa ku Europe ziyenera kupatsidwa satifiketi ya KTW.