<prompt> Translate the following text to SwahiliWater used for culturing and test dilution water should be analyzed for toxic metals and organics at least annually or whenever difficulty is encountered in meeting minimum acceptability criteria for control survival and reproduction or growth.  <response>: Maji ya kulima na maji ya mtiririko wa majaribio yanapaswa kuchunguzwa kwa metali na viungo vya kikaboni vya sumu angalau mara moja kwa mwaka au wakati wowote utata unakutana na kufikia vigezo vya kiwango cha chini cha kukubalika kwa kuishi na kuzaliana au ukuaji. 