ORANGE COUNTY, Fla. -- There's a mystery contamination after something bad leaked into a storm drain that connects to retention ponds and a lake used by the Wet 'n Wild Water Park and a local hotel. An anonymous e-mail first tipped off Channel 9 to the problem.

Officials said the contamination was very small, but they began to pump the storm drain Wednesday afternoon to try and figure out where it came from. The drain is connected to a series of underground retention ponds used by the Westgate Palace and the jet ski lake at Wet 'n Wild. They feed each other when there are heavy rains.

There's something foul afloat in the storm drain that rounds around the Westgate Palace. The county believes it's some kind of wastewater, possibly kitchen waste.

The county asked the hotel to pump out the nasty stuff from the storm drain to see if there's anymore where that came from, but they don't know yet where that is.

"Not at this time. It's still under investigation," said environmental specialist Chris Schroettinger.

To make sure it's not somehow leaking from somewhere in the Westgate Palace, the county put fluorescent dye into the hotel's water lines and will see if it runs into the storm drain Thursday morning.

Wet 'n Wild uses Sandy Lake for jet skiing from April until October, when it's warmer, so it's been closed for several months and will be for several more. Still, the county took water samples from Sandy Lake to find out whether the wastewater made its way from the storm retention ponds to the lake.

"We can't tell at this time whether it's impacted the lake or entered surface water. It's unknown," Schroettinger said.

Test results will be back Thursday. The Westgate manager told Eyewitness News the hotel has had no plumbing issue recently that could have caused it. Wet 'n Wild was closed Wednesday because the temperature dipped below 60 degrees.