Drinking water companies limit the multiplication of bacteria, protozoans and invertebrates (all natural parts of drinking-water distribution systems ).
dɹˈɪŋkɪŋ wˈɔːɾɚ kˈʌmpəniz lˈɪmɪt ðə mˌʌltɪplɪkˈeɪʃən ʌv bæktˈɪɹiə, pɹˌoʊɾoʊzˈoʊənz ænd ɪnvˈɜːɾɪbɹˌeɪts ˈɔːl nˈætʃɚɹəl pˈɑːɹts ʌv dɹˈɪŋkɪŋwˈɔːɾɚ dˌɪstɹɪbjˈuːʃən sˈɪstəmz.