21st Ave. (TRI-054)

Isle of Palms, South Carolina
Managed by Charleston Waterkeeper

Photo by Dania

Isle of Palms is a beautiful, family friendly, 7-mile long sandy beach just up the coast from Sullivan’s Island. Metered parking is available on Ocean Blvd. near the Front Beach area between 10th and 14th Ave. Street parking is available, just make sure all four tires are off the pavement. Dogs are welcome year-round. A leash law is in effect daily, except 5am-8pm, from Apr. 1 to Sept. 14. Surfing is prohibited in designated swimming areas. For more information visit http://www.iop.net.

Get directions to this beach
WATER QUALITY
  • Passed water quality tests at least 95% of the time
  • Historical Status
  • This status is based on the latest sample, taken on September 25th, 2019. Charleston Waterkeeper updates the status of this beach as soon as test results become available. These results were posted to Swim Guide on at
For water quality icon legend, click:   
CURRENT WEATHER
24°C
Mostly clear
  • Report Pollution
MONITORING FREQUENCY

21st Ave. (TRI-054) is sampled bi-weekly from May 1st to October 1st

SOURCE INFORMATION

Through its Beach Monitoring Program, the South Carolina Department of Health and Environmental Control (DHEC) monitors the level of enterococcus bacteria at 122 sites along South Carolina’s coast. Testing is conducted during the beach season from May 15th to October 15th. Monitoring levels of enterococcus bacteria is the best way to determine whether disease-causing pathogens may be present in ocean water.

DHEC monitors 27 sites at our local beaches (Isle of Palms, Sullivan’s Island, Folly Beach, Kiawah, and Seabrook). Monitoring sites are located near public access points to ensure the public’s safety. DHEC monitors our local beaches twice a month. When sample results are published on the Program’s website, Charleston Waterkeeper updates Swim Guide.

A “Green” site = test result of 103 MPN/100 mL or lower OR a test result between 104 and 500 MPN/100 mL followed by a test result the next day of LESS than 104 MPN/100 mL

A “Red” site = a test result of 500 MPN/100 mL or higher OR a test result between 104 and 500 MPN/100 mL followed by a test result the next day of 104 MPN/100 mL or GREATER

A “Gray” site = no test result

WATER QUALITY GRAPH

21st Ave. (TRI-054)

Isle of Palms, South Carolina
Managed by Charleston Waterkeeper
WATER QUALITY
  • Passed water quality tests at least 95% of the time
  • Historical Status
  • This status is based on the latest sample, taken on September 25th, 2019. Charleston Waterkeeper updates the status of this beach as soon as test results become available. These results were posted to Swim Guide on at
For water quality icon legend, click:   
CURRENT WEATHER
24°C
Mostly clear

Photo by Dania

Isle of Palms is a beautiful, family friendly, 7-mile long sandy beach just up the coast from Sullivan’s Island. Metered parking is available on Ocean Blvd. near the Front Beach area between 10th and 14th Ave. Street parking is available, just make sure all four tires are off the pavement. Dogs are welcome year-round. A leash law is in effect daily, except 5am-8pm, from Apr. 1 to Sept. 14. Surfing is prohibited in designated swimming areas. For more information visit http://www.iop.net.

Get directions to this beach
  • Report Pollution
MONITORING FREQUENCY

21st Ave. (TRI-054) is sampled bi-weekly from May 1st to October 1st

SOURCE INFORMATION

Through its Beach Monitoring Program, the South Carolina Department of Health and Environmental Control (DHEC) monitors the level of enterococcus bacteria at 122 sites along South Carolina’s coast. Testing is conducted during the beach season from May 15th to October 15th. Monitoring levels of enterococcus bacteria is the best way to determine whether disease-causing pathogens may be present in ocean water.

DHEC monitors 27 sites at our local beaches (Isle of Palms, Sullivan’s Island, Folly Beach, Kiawah, and Seabrook). Monitoring sites are located near public access points to ensure the public’s safety. DHEC monitors our local beaches twice a month. When sample results are published on the Program’s website, Charleston Waterkeeper updates Swim Guide.

A “Green” site = test result of 103 MPN/100 mL or lower OR a test result between 104 and 500 MPN/100 mL followed by a test result the next day of LESS than 104 MPN/100 mL

A “Red” site = a test result of 500 MPN/100 mL or higher OR a test result between 104 and 500 MPN/100 mL followed by a test result the next day of 104 MPN/100 mL or GREATER

A “Gray” site = no test result

WATER QUALITY GRAPH



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