BORDEN, Ind. (WDRB) --The beach at Deam Lake has reopened after it was shut down because of high E. coli levels.

Water collected Wednesday failed a test forcing a two-day closure.

The beach opened back up for swimmers around 11:00 a.m. on Friday.

Derek Spanton, the assistant property manager, said park officials may never know exactly what caused the E. coli levels to rise.

"It could be a number of different things. It's possible that we received a whole bunch of rain the last few days that's one of the factors that could lead to the high test," Spanton said.

Deam Lake officials said the beach is tested by an outside company once a week.

“We’re required to get two good samples before we can reopen it,” Spanton said.

There could be things even worse than E. coli in local lakes. The Indiana Department of Health warns an amoeba found in some Indiana lakes can cause a serious infection that in rare cases can be fatal.

Swimmers like Trevor McGuire are grateful Deam Lake is tested.

“It definitely reassures myself that it’s probably pretty safe to swim in,” McGuire said.

According to the Indiana Department of Natural Resources, Deam Lake has rarely closed because of high levels of E. coli.

For information on Indiana beach closures, visit the BeachGuard website.

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