KTW (Teko le Teko ea Kamohelo ea Likarolo tseo e seng tsa Metsi a Sejeremane) e emetse lefapha le nang le matla la Lefapha la Bophelo bo Botle la Jeremane bakeng sa khetho ea lisebelisoa tsa sistimi ea metsi a nooang le tlhahlobo ea bophelo bo botle.Ke laboratori ea Jeremane DVGW.KTW ke bolaoli bo tlamang ba taolo bo thehiloeng ka 2003.
Bafani ba thepa ba hlokeha hore ba lumellane le DVGW (German Gas and Water Association) Regulation W 270 "Ho phatlalatsoa ha likokoana-hloko ka thepa e seng ea tšepe".Tekanyetso ena haholo-holo e sireletsa metsi a nooang ho tsoa litšila tsa likokoana-hloko.W 270 hape ke tloaelo ea ts'ebetsong ea litokisetso tsa molao.Tekanyetso ea tlhahlobo ea KTW ke EN681-1, 'me boemo ba tlhahlobo ea W270 ke W270.Lisebelisoa tsohle tsa metsi a nooang le lisebelisoa tse thusang tse romelloang Europe li tlameha ho fuoa setifikeiti sa KTW.
Nako ea poso: Sep-19-2022