I-KTW (Ukwamkelwa kovavanyo kunye nokulinga kwiindawo ezingezizo ezentsimbi kushishino lwamanzi okusela aseJamani)

I-KTW (uVavanyo kunye noVavanyo loQinisekiso lwezahlulo ezingezizo iintsimbi kwiShishini laManzi okuSela eJamani) limele isebe eligunyazisiweyo leSebe lezeMpilo laseJamani elijongene nokukhethwa kwezinto zenkqubo yamanzi okusela kunye novavanyo lwezempilo. Yilabhoratri yaseJamani iDVGW. I-KTW ligunya elinyanzelekileyo lokulawula elasekwa ngo-2003.

Ababoneleli kufuneka bathobele i-DVGW (iGesi yaseJamani kunye noMbutho waManzi) uMmiselo W 270 "Ukusasazwa kwee-microorganisms kwizinto ezingekho zetsimbi". Lo mgangatho ukhusela ikakhulu amanzi okusela kubumdaka bebhayoloji. I-W 270 ikwayindlela yokuphunyezwa kwemimiselo yomthetho. Umgangatho wovavanyo lwe-KTW yi-EN681-1, kunye nomgangatho wovavanyo we-W270 yi-W270. Zonke iinkqubo zamanzi okusela kunye nezinto ezincedisayo ezithunyelwa eYurophu kufuneka zikhutshwe ngesatifikethi se-KTW.