Connecticut Department of Energy & Environmental Protection
Water
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Cyanobacteria, also known as blue-green algae, occur naturally in lakes and ponds throughout Connecticut. These microscopic organisms often go unnoticed and cause no harm. However, excessive nutrient pollution and climate change are causing waterbodies to experience more frequent nuisance cyanobacteria blooms that may produce and release toxins. When cyanobacteria blooms release toxins, people and animals using the water body for recreation can have health effects. It is important to note that not all algal blooms are harmful algae blooms (HABs), however it is not possible to determine the level of toxins in the water without a more detailed evaluation. Out of precaution it is best to avoid direct contact with water experiencing a bloom. When in doubt, stay out!
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Phosphorus PA12-155 Coordinating Committee and Workgroup Proceedings
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Presentations, Comments and Summaries from two PA 12-155 Public Meetings
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Water Quality Reclassification
Information regarding a request to change the surface or ground water quality classification of a property or area
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Water Quality (305b) Report to Congress
The DEEP Water Monitoring Group conducts annual water quality monitoring to evaluate the physical, chemical and biological condition of the State’s waters. Group staff collect a wide variety and large quantity of information each year, including water chemistry data, water temperature data, bacteria data, biological community data (fish, macroinvertebrates, diatoms) and tissue contaminant data.