KTW (Gwaji da Gwaji Takardar Shaida ta Sassan da Ba na ƙarfe ba a Masana'antar Ruwan Sha ta Jamus) tana wakiltar sashen da ke da iko na Ma'aikatar Lafiya ta Tarayya ta Jamus don zaɓar kayan tsarin ruwan sha da kimanta lafiya. Ita ce dakin gwaje-gwaje na DVGW na Jamus. KTW hukuma ce ta tilas wacce aka kafa a shekarar 2003.
Ana buƙatar masu samar da kayayyaki su bi ƙa'idar DVGW (Jamus Gas and Water Association) W 270 "Yaɗuwar ƙwayoyin cuta akan kayan da ba na ƙarfe ba". Wannan ƙa'idar galibi tana kare ruwan sha daga ƙazanta na halitta. W 270 kuma ita ce ƙa'idar aiwatarwa ta tanade-tanaden doka. Ma'aunin gwajin KTW shine EN681-1, kuma ma'aunin gwajin W270 shine W270. Duk tsarin ruwan sha da kayan taimako da aka fitar zuwa Turai dole ne a ba su takardar shaidar KTW.
Lokacin Saƙo: Satumba-19-2022