"We have had some of our experts go out and they found significantly elevated levels of chlorides, which is an obvious indication that there is still saltwater contamination that exists in the area," Braaten said.

The oil companies' lawyers have disputed the idea that the cleanup has not worked.

Peterson said he had hoped the state would have sided with him and forced the companies to clean up the site again, but those hopes were dashed when the state became a party to the lawsuit.

"The state couldn't decide if they were going to be on our side or the other side," Peterson said. "The health department and oil and gas both approved the cleanup and said I should be fine. But it's not fine."

Peterson said he never thought he would have to battle the state and oil companies to have his land cleaned up.

"I thought that laws protected people," Peterson said. "If someone came in and destroyed your home, law enforcement would be out there to get the culprit and have them pay for it."

Peterson said he does not see any difference with contaminants being spilled on his soil.