Enterococcus --  for coastal recreational waters, the EPA has determined that enterococcus survives better than fecal coliform in salt water.  Enteroccus is called an "indicator organism." It lives in the intestines of warm-blooded animals and when found, its presence indicates that other, more harmful organisms may also be in the water. It is measured using both single-sample maximum limits and  five-week geometric means, depending on the usage level of the site. All ocean beaches in North Carolina are considered 'high use' sites for testing purposes.   When test results indicate levels that exceed the standards, we post signs and issue press releases to notify the public that swimming in the area may expose them to an increased risk of illness.

 
Salinity -- The amount of salt in the water can affect everything that lives in the water.

Temperature -- The temperature of the water can affect everything that lives in the water.