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Blue Green Algae – Upper Rideau Lake – Health Unit Notice

August 12th 15:30 – Please be advised that the Township has received notice from the Health Unit regarding a letter that has been sent to some residents of Upper Rideau Lake in the McNally’s Bay area regarding blue-green algae. As noted, questions should be directed to the Health Unit at 613 283 2740 or the Ministry of the Environment at 1 800 565 4923. The notice can be read here: letter from the Health Unit (PDF)

UPDATE # 1 - August 13th 11:00 - The Health Unit has advised the Township that staff will be in the potentially impacted areas (McNally's Bay and Narrows Lock area) today to deliver the information provided in yesterday's notice (see above) to residences, campgrounds and lock stations. As noted by the Health Unit these are precautionary measures until the samples taken by the Ministry are analyzed and the results available. No specific timeline has been provided for this. Questions should continue to be directed to the Health Unit at 613 283 2740 or the Ministry of the Environment at 1 800 565 4923.

UPDATE # 2 - August 13th 16:30 – The Ministry of the Environment has advised the Health Unit regarding the results of the samples collected on August 11th:

“McNally’s Bay South End sample (LIMS#C213848-01) obtained August 11, 2014 has total Microcystins present in the sample. The sample obtained has a total Microcystins concentration of 1.59 ug/L. The Ontario Drinking Water Quality Standard for Total Microcystins is 1.5 ug/L. Health Canada’s Interim Guideline for recreational exposure is 20 ug/L. The sample obtained therefore confirms that Blue Green Algae is present at concentrations slightly greater than the Ontario drinking water standard and well below the Health Canada Interim Guideline for recreational exposure. This sample contained Gloeotrichia which is a non-toxic Blue Green and Anabaena which is a Blue Green that may produce microcystin. The sample from the Newport Village Beach (C213848-02) obtained on August 11, 2014 did not have Microcystins present in the sample.”

Township staff have been in contact with the Health Unit. The Health Unit has advised that they will be evaluating the results as supplied and coordinating a response tomorrow morning. Residents of McNally’s Bay should continue to follow the precautionary measures outlined in the Health Unit’s letter of August 12 (see above). Questions should be directed to the Health Unit at 1 613 283 2740 or the Ministry of the Environment at 1 800 565 4923.

UPDATE # 3 - August 14th 12:30 - The Health Unit has issued a media release following on the MOE test results (see UPDATE # 2 above). The release can be read here: letter from the Health Unit (PDF). As indicated the advisory of the 12th remains in place for McNally's Bay. MOE sampling continues and sightings should be reported to the MOE through the Spills Action Centre. You can also keep up to date and get the latest information from the Health Unit's website here: www.healthunit.org and here: www.healthunit.org/recwater/blue-green-algae.html

UPDATE # 4 - August 15th 17:00 - The Health Unit has issued an update regarding ongoing MOE testing on Upper Rideau and recommended actions for area residents. The update can be read here: letter from the Health Unit (PDF).

UPDATE # 5 – August 19th 14:00 – The Township has received an update from the Health Unit. It can be read here: letter from the Health Unit (PDF).

UPDATE # 6 – August 19th 14:30 – The Township has provided the following letters to the Minister and the RVCA regarding the ongoing matter of water quality on Upper Rideau Lake. The letter to the Minister can be read here: Mayor's Letter to Minister, August 18, 2014 (PDF); and to the RVCA here: Mayor's Letter to RVCA, August 18, 2014 (PDF).

UPDATE # 7 - August 20th 15:00 - The Township has been advised that the Ministry will be performing additional sampling on the Upper Rideau on Friday the 22nd. No further details on where samples will be taken or the number of samples was provided.

UPDATE #8 – August 21st 16:30 – The Health Unit has issued and updated notice. It can be read here: letter from the Health Unit (PDF). As a reminder , you can access updates and information from the Health Unit as they become available on their website here: www.healthunit.org All sightings of potential blue green algae are to be reported to the MOE’s Spills Action Center at 1-800-268-6060.

UPDATE # 9 - August 28th 14:30 - The Ministry of the Environment and Climate Change has provided the results from the sampling of Upper Rideau Lake on Friday the 22nd. Of the 11 sites sampled for microcystins, 2 were positive. The positive sites included Little Bay on the North Shore at 0.10 µg/L, and McNallys Bay at 0.26 µg/L. Both positive samples were below the Ontario Drinking Water Quality Standard for microcystins of 1.5 µg/L. The Health Unit has issued the following update following on receipt of the results: Health Unit August 28 Update (PDF).

UPDATE # 10 – September 12th 11:00 - The Ministry of the Environment and Climate Change has provided a response to the Township’s letter dated August 18th, 2014 (see update #6 above). The Ministry’s letter can be read in full here: Letter from the Ministry of the Environment and Climate Change (PDF).

UPDATE # 11 – October 1st 15:00 – Following receipt by Council of a letter from The Ministry of the Environment and Climate Change (see update #10 above), the Mayor has issued the following response: Mayor's Letter to Minister, October 1, 2014 (PDF).

UPDATE # 12 – November 26th 10:30 – Following the Township’s letter of October 1st (see update #11 above) The Minister of the Environment and Climate Change, the Hon. Glen Murray, has issued the following response: Letter from MOECC to Mayor Holman, Nov. 20, 2014 (PDF).

UPDATE # 13 – December 11th 14:00 – Following the Township’s receipt of the Minister’s November 20th letter (see update #12) the Mayor has issued the following letter: Mayor's Letter to Minister, December 11, 2014 (PDF).

UPDATE # 14 – January 27th 08:30 – Following the Mayor’s letter of December the 11th, 2014 (see update #13) the Township has received the following response from the Minister: Minister's Response, January 19, 2015 (PDF).




Township of Rideau Lakes, 1439 County Road 8, Delta, ON, K0E 1G0
email: info@twprideaulakes.on.ca
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