It was a nice-weather week. All of the beaches remain open at the time of writing. Some beaches’ bacteria levels went up from last week. It should be noted, however, that the tests were done prior to Friday’s rainfall.

As of the posting of the water quality report from June 11, Swampscott’s beaches remain open.

According to the Massachusetts Department of Public Health, water is considered safe when bacterial levels are at or below 104 colony-forming units per 100 milliliters (cfu/100 ml).

An additional measure, the geometric mean, reflects average water quality over the past month, based on the five most recent test results. For marine beaches, the allowable geometric mean is 35 cfu/100 ml. The geometric mean is not reported yet due to the lack of data.

Beachgoers can view bacteria levels on the Department of Public Health’s interactive website, though the data is updated with a 24-hour delay.

Below are the June 18 results. 

Fisherman’s Beach 

Single-Sample Bacterial Results – 5.00 cfu/100 ml

King’s Beach 

Single-Sample Bacterial Results – 10.00 cfu/100 ml

New Ocean/Eisman’s 

Single-Sample Bacterial Results – 31.00 cfu/100 ml

Phillips 

Single-Sample Bacterial Results – 5.00 cfu/100 ml

Preston 

Single-Sample Bacterial Results – 5.00 cfu/100 ml

Whales 

Single-Sample Bacterial Results – 20.00 cfu/100 ml