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Harmful Algal Bloom Information

As a precautionary measure the Ewing Township Health Department and the New Jersey Department of Environmental Protection are advising the public to avoid coming in contact with, keep animals away from, and not eat fish caught in Lake Sylva at TCNJ due to the possibility of harmful algal blooms.
Harmful algal blooms typically occur during late summer to early fall in still or slow-moving water and may last days or weeks, and are generally blue or green in color and may appear as scums, clumps, floating mats, or spilled paint. These harmful algal blooms are caused by cyanobacteria, also known as blue-green algae, and can produce toxins and other irritants which pose a risk to human, pet, and livestock health. Suspected harmful algal blooms should be reported to the Ewing Township Health Department by calling 609-883-2900 extension 7691.
Once reported, the Ewing Township Health Department and New Jersey Department of Environmental Protection will determine if further investigation is needed to determine if blooms  are harmful.  Advisories will be issued for publicly accessible waters with harmful levels of cyanobacteria and/or toxins. If a harmful algal bloom is present, the Ewing Township Health Department recommends the following:
• Avoid contact with water in the vicinity of the algae bloom, especially in areas where blue-green algae are dense and form scums.
• Do not drink or consume the water. Boiling, filtration and/or chlorination will not remove toxins and will not make the water safe for drinking.
• Fish should not be eaten as the health effects remain unknown.
• Do not breathe water spray in areas of the bloom.
• Keep pets and livestock away from the water. Do not allow animals to drink the water, eat dried algae, or groom themselves after contact with the water.
• If people, pets, and livestock come into contact with a bloom, rinse off with fresh water as soon as possible.
Seek medical attention or a veterinarian if a person or animal are experiencing adverse health effects after exposure to an algal bloom. Young children, pregnant women, people with weak immune systems, and animals are especially at risk.
To view more information click here to read the Cyanobacterial Harmful Algal Blooms Fact Sheet.

Updates will appear on this page as they become available.


Municipal Building 
2 Jake Garzio Drive
Ewing, NJ 08628
(609) 883-2900 
 M-F: 8:30am - 4:30pm

Senior & Community Center 
999 Lower Ferry Road 
Ewing, NJ 08628 
(609) 883-1776 
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Hollowbrook Community Center
320 Hollowbrook Drive
Ewing, NJ  08638
(609)  883-1199
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Scotch Road (Public Works) 
Bulk and Electronic Items 
Th-F: 7:00am - 3:00pm 
 Sat: 7:00am - 2:30pm

Jack Stephan Way (Brush Drop-off) 
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Ewing Animal Shelter 
4 Jake Garzio Drive 
 (609) 771-8076

Ewing Police 
2 Jake Garzio Drive 
 (609) 882-1313

Ewing Branch Library 
61 Scotch Road 
 (609) 882-3130

Rental Property Concern Hotline 
 (609) 323-1177

Ewing Public Schools 
2099 Pennington Road
Ewing, NJ 08618
P: (609) 538-9800
F: (609) 538-0041

Weather Central 
Courtesy of PHVFC

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