Water samples taken from Ramsey Lake on Sept. 18 have tested positive for blue-green algae, said the Sudbury and District Health Unit.

The samples contained a species of the algae that can produce toxins. Blue-green algae had previously been confirmed in Ramsey Lake in July.

Where a bloom is visible, avoid using the water for drinking and bathing or swimming in the area of the bloom.

The City of Greater Sudbury is reminding residents of South Bay Road that municipally treated drinking water is available free of charge at a filling station located at the southwest corner of the intersection of Countryside Drive and the entrance to the Gerry McCrory Countryside Sports Complex, 235 Countryside Dr. Residents must supply their own containers.

The city continues to work with the Ministry of the Environment, the Nickel District Conservation Authority and the health unit to monitor Ramsey Lake and other municipal waterways for the presence of blue-green algae.

For more information regarding the algal bloom, visit www.sdhu.com.