CHARLESTON, W.Va. (AP) - A handful of people have been hospitalized and several hundred thousand remain without water after a chemical leaked from a storage tank in Charleston into the public water treatment system, state authorities said Saturday.About 300,000 people in nine counties entered their third day Saturday without being able to drink tap water or use it to bathe or wash dishes or clothes after a foaming agent escaped the Freedom Industries plant and seeped into the Elk River. The only allowed use of the water was for flushing toilets.Allison Adler of the Department of Health and Human Resources says 32 people sought treatment at area hospitals for symptoms like nausea and vomiting. Of those, four people were admitted to the Charleston Area Medical Center. Their conditions were not immediately known.Adler added that authorities were still trying to figure out the safety level of the water and that more information should be available to residents later Saturday.In the first hours after the spill, residents concerned about potential health effects deluged the West Virginia Poison Center with calls. Adler said about 50 people called with queries about keeping goats, chicken and other farm animals safe from exposure.Federal authorities, including the Occupational Safety and Health Administration, or OSHA, opened an investigation into Wednesday's spill. Just how much of the chemical leaked into the river was not yet known.The company's president issued an apology to West Virginia residents."We'd like to start by sincerely apologizing to the people in the affected counties of West Virginia," company President Gary Southern said. "Our friends and our neighbors, this incident is extremely unfortunate, unanticipated and we are very, very sorry for the disruptions to everybody's daily life this incident has caused."Some residents, including John Bonham of Cross Lanes, were willing to accept Southern's apology."Yeah, I understand that stuff can happen," said Bonham, who also works in the chemical industry. "I don't think it's going to get him out of legal liability. OSHA is the one they're going to have to answer to."Officials are working with a Tennessee company that makes the chemical to determine how much can be in the water without it posing harm to residents, said Jeff McIntyre, president of West Virginia American Water."We don't know that the water's not safe. But I can't say that it is safe," McIntyre said Friday.For now, there is no way to treat the tainted water aside from flushing the system until it's in low-enough concentrations to be safe, a process that could take days.The leak was discovered Thursday morning from the bottom of a storage tank. Southern said the company worked all day and through the night to remove the chemical from the site and take it elsewhere. Vacuum trucks were used to remove the chemical from the ground at the site."We have mitigated the risk, we believe, in terms of further material leaving this facility," Southern said. He said the company didn't know how much had leaked.The tank that leaked holds at least 40,000 gallons, said state Department of Environmental Protection spokesman Tom Aluise, although officials believe no more than 5,000 gallons leaked from the tank. Some of that was contained before escaping into the river, Aluise said.Freedom Industries was ordered Friday night to remove chemicals from its remaining above-ground tanks, Aluise added.The company was already cited for causing air pollution stemming from the odor first reported Thursday, Aluise said.The primary component in the foaming agent that leaked is the chemical 4-methylcyclohexane methanol. The spill has forced businesses, restaurants and schools to shut down and forced the Legislature to cancel its business for the day.Gov. Earl Ray Tomblin said the Federal Emergency Management Agency and several companies were sending bottled water and other supplies for residents."If you are low on bottled water, don't panic because help is on the way," Tomblin said.By Saturday morning, more than a dozen truckloads of bottled water had arrived in the affected counties and was being distributed to residents at volunteer fire departments, community centers and other sites.County emergency officials reported no problems at the sites, with the exception of one in Kanawha County that had to be moved Friday because of traffic congestion."Everybody's been pretty patient with us," Greg Lay, Boone County emergency services director, said Saturday."Like most things that happen, we're into it enough now that everybody's ready for it to be over," he said.At a Kroger near a DuPont plant along the Kanawha River, customers learned the grocery store had been out since early Friday.Robert Stiver was unable to find water at that and at least a dozen other stores in the area and worried about how he'd make sure his cats had drinkable water."I'm lucky. I can get out and look for water. But what about the elderly? They can't get out. They need someone to help them," he said.