Izingwegwe zifanele zonke izinhlobo zemishini ephakamisa ubunjiniyela, okokusebenza kwezimayini zensimbi, ukulayishwa nokuthulula kukaloliwe echwebeni, imishini yamahlathi, imishini yamandla, izindiza nezasolwandle, ezokuthutha zomhlaba, ukuphakamisa amabhizinisi emboni kanye nezimayini, ukudonsa, njll.