contaminated
... that a 2003 study reported that 87% of reservoirs supplying water to residential buildings in Kolkata, India, were contaminated?
... that a 2003 study reported that 87% of reservoirs supplying water to residential buildings in <a href="./Kolkata" id="mwBZA" rel="mw:WikiLink" title="Kolkata">Kolkata</a>, India, were <b id="mwBZE"><a href="./Environmental_issues_in_Kolkata" id="mwBZI" rel="mw:WikiLink" title="Environmental issues in Kolkata">contaminated</a></b>?