LHA Water Quality Update

Lake Hills Members,

On August 9th our lake management company, All Habitat Services (AHS), successfully treated nuisance FILAMENTOUS algae mats in various areas, as needed. AHS swiftly responded after receiving notification of the bloom. The next filamentous algae treatment will likely be scheduled within the next couple of weeks.

A PLANKTONIC algae bloom (green colored water) also occurred in early August, at least several weeks earlier than normal; the very mild winter and hot summer are contributing factors. The bloom has persisted for several weeks and may continue until consistent cool weather arrives.

AHS advised that the cost to perform a SINGLE treatment for the lake-wide planktonic algae bloom would be above our TOTAL annual ecology budget. In prior years, we have not treated planktonic blooms due to the high cost and because they normally occurred in September when lake usage drops significantly.

Some members inquired if it is safe to use the lake during planktonic blooms. The Association does not test algae for potential hazardous conditions.

The algae does not currently appear to be at a severe level, but conditions can change rapidly. If members have concerns about an algae bloom, the Board advises you to contact your District Rep and to swim at your own risk. The LHA Lifeguards provide similar alerts to members when the Town closes Lake Mohegan due to high bacteria levels (primarily after 1″+ of rain within a 24 hr period).

The Board will investigate the feasibility of algae testing for future years given the increasingly early and frequent blooms.

We also received an inquiry about the chemicals used to treat the weeds and algae. The chemicals are applied by a licensed environmental company in accordance with LHA’s CT DEEP permit and product labels. Please email jrhench69@gmail.com if you wish to receive a copy of the product labels for review (Reward: Diquat dibromide; GreenCleanPro: Sodium Carbonate Peroxyhydrate; GreenClean Liquid 5.0: Hydrogen Dioxide, Peroxyacetic Acid).

Members are notified of scheduled treatments as soon as possible via the Lake Hills email group and yellow signs are posted at the five Lake Hills beaches during treatment. Do not use the lake in areas actively being treated (look for the large motor boat). Refer to the posted signs for usage restrictions after treatment. Please advise family members and guests of the protocol. We are working on providing members notice one week prior to scheduled treatments but weather and logistical factors may reduce advanced notice.

Feeding your lawn feeds the weeds and algae in our lake. Carpet-like lawns = green, slimy, weedy Samp Mortar
Please minimize or eliminate lawn fertilizers. As an alternative, consider using organic fertilizers with low or no phosphorous (the middle number is phosphorous, ex., 18-0-4).
If you have a lakeside home, do not dump any yard debris or chemicals into or near the lake.
Manually remove nuisance aquatic weeds and filamentous algae from near-shore swim areas.

Thank you!

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