What beaches are closed in Massachusetts? See the list of places where you can't swim.

Several beaches in Massachusetts are closed for swimming during one of the most extreme heat waves in years for the Boston area. 

The city of Haverhill announced Wednesday it has fixed a sewer leak that was dumping millions of gallons of wastewater into the Merrimack River. Ipswich has reopened most of its beaches, while others on Plum Island in Newburyport remain closed.

Other beaches in the state are closed because there is too much bacteria in the water, which can happen after a heavy rain event, or as a result of dangerous algae blooms.

The Department of Public Health warns that swimming in unsafe waters can make you sick or cause skin rashes. Children, elderly people and those with weakened immune systems are at greatest risk of experiencing health problems.

Here is the list of beaches that were closed Saturday morning, according to the interactive beach water quality dashboard.

Damon Pond Beach, Ashby (Other)
Cliff Pond @ DYS, Brewster (Harmful Cyanobacteria Bloom)
Cliff Pond @ Main, Brewster (Harmful Cyanobacteria Bloom)
Flax Pond, Brewster (Harmful Cyanobacteria Bloom)
Moses Smith Creek, Dartmouth (Bacterial Exceedance)
Eagle Lake, Holden (Bacterial Exceedance)
Kings @ Eastern Ave., Lynn (Bacterial Exceedance)
Kings @ Kimball Rd., Lynn (Bacterial Exceedance)
Kings @ Pierce Rd., Lynn (Bacterial Exceedance)
Lynn Shore Beach, Lynn (CSO/SSO event)
Magnolia East, Manchester (Bacterial Exceedance)
Sesachacha Pond, Nantucket (Harmful Cyanobacteria Bloom)
Plum Island - 55th St., Newburyport (CSO/SSO event)
Plum Island - end of island 1, Newburyport (CSO/SSO event)
Plum Island - end of island 2, Newburyport (CSO/SSO event)
Plum Island Point, Newburyport (CSO/SSO event)
Little Sandy, Pembroke (Bacterial Exceedance)
Court Street, Provincetown (Bacterial Exceedance)
Broady (Baker) Quincy (Bacterial Exceedance)
Children's Island - Back, Salem (Bacterial Exceedance)
Peckham Pond @ Camp Nihan, Saugus (Bacterial Exceedance)
Kings, Swampscott (CSO/SSO)
Briarwood, Wareham (Bacterial Exceedance)
Pinehurst, Wareham (Bacterial Exceedance)
Wareham Lake Shores, Wareham (Bacterial Exceedance)
Shannon Beach @ Upper Mystic, Winchester (Bacterial Exceedance)
Donovans, Winthrop (Bacterial Exceedance)
Grandview, Winthrop (Bacterial Exceedance)