What causes high bacteria levels?
There are many potential causes of elevated bacteria levels in lakes, ponds, and the ocean. Runoff from precipitation events can carry a variety of contaminants into the water, including animal waste, pollutants and excess nutrients from lawns. In addition to runoff, the other common causes of high bacteria levels are failing septic systems, animal waste on a beach or in the water (typically from birds), leaking baby diapers, and individuals swimming during an illness.
