wˈɛl wˈɔːɾɚ kæn biː vˈɛɹi ɹˈɪtʃ ɪn ɹˈeɪdɑːn; ðə jˈuːs ʌv ðɪs wˈɔːɾɚɹ ɪnsˈaɪd ɐ hˈaʊs ɪz ɐnˈʌðɚ ɹˈaʊt ɐlˈaʊɪŋ ɹˈeɪdɑːn tʊ ˈɛntɚ ðə hˈaʊs.
Well water can be very rich in radon; the use of this water inside a house is another route allowing radon to enter the house.