ANNAPOLIS, Md. – Some 6,000 Anne Arundel County residents will soon find out whether they need to check their water pipes for lead. Federal guidelines require that every water utility across the country announce publicly by October how many water pipes need to be checked for lead and report the results. WBAL-TV 11 News Investigates was the first to report in November that some 230,000 residents in Baltimore City and Baltimore County need to check their pipes for lead.