Jonn Lunsford, of the city's Parks & Recreation Dept., announced the re-opening via email this morning, saying the coliform count was back to normal levels, approx. 4 cfu/100 ml.
Lunsford said he has no idea what caused the high coliform count, but it came from human or animal waste. He said the city regularly checks water quality during warmer weather.
Lunsford said the coliform count had hit 1,000, causing the city to close the lake to swimmers, but more recent testing had the level within the range to allow the city to allow swimmers again.
Large quantities of fecal coliform bacteria in water are not harmful, but may indicate a higher risk of pathogens being present in the water. Some waterborne pathogenic diseases that may coincide with fecal coliform contamination include ear infections, dysentery, typhoid fever, viral and bacterial gastroenteritis, and hepatitis A.