In 1998, Enron International acquired Wessex Water for $2.88 billion. Wessex Water became the core asset of a new company, Azurix, which expanded to other water companies. After Azurix's promising IPO in June 1999, Enron "sucked out over $1 billion in cash while loading it up with debt," according to Bethany McLean and Peter Elkind, authors of "". Additionally, British water regulators required Wessex to cut its rates by 12% starting in April 2000, and an upgrade was required of the utility's aging infrastructure, estimated at costing over a billion dollars. By the end of 2000 Azurix had an operating profit of less than $100 million and was $2 billion in debt. In August 2000, after Azurix stock took a plunge following its earnings report, Mark resigned from Azurix and Enron. Azurix assets, including Wessex, were eventually sold by Enron.