ɪn tˈuː θˈaʊzənd twˈɛnti, ɐ ɡɹˈaʊndpˈɛnɪtɹˌeɪɾɪŋ ɹˈeɪdɑːɹ sˈɜːveɪ kəndˈʌktᵻd baɪ kˈeɪmbɹɪdʒ ænd ɡˈɛnt jˌuːnɪvˈɜːsᵻɾiz ʃˈoʊd ɐ nˈɛtwɜːk ʌv wˈɔːɾɚ pˈaɪps ðæt nˈoʊɾəbli ɹˈʌn ɪn blˈɑːks ænd nˈɑːt, ˌæzˌɪz mˈoːɹ jˈuːʒuːəl, ɐlˈɔŋ ðə stɹˈiːts.
In 2020, a ground-penetrating radar survey conducted by Cambridge and Ghent universities showed a network of water pipes that notably run in blocks and not, as is more usual, along the streets.