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March 26, 2025

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Advisories for Ontario

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Select municipality for details:

MunicipalityTypeSince
1. ALBAN (1) Boil Water 6/27/2024
2. ALGONQUIN PROVINCIAL PARK Boil Water 2/10/2025
3. Anishnaabeg of Naongashiing First Nation Boil Water 11/30/2021
4. Annes Chip Stand Boil Water 7/14/2023
5. AYLMER (2) Water Quality Advisory 12/15/2022
6. AYTON Lodge Water Quality Advisory 6/25/2024
7. BALTIMORE (Scenery Drive) Boil Water 3/14/2025
8. BASS LAKE Cyanobacteria Bloom 10/2/2024
9. Baycrest Lodge Boil Water 6/2/2023
10. BAYVIEW ESCARPMENT PROV PK Boil Water 5/25/2024
11. BEAR LAKE Cyanobacteria Bloom 8/6/2024
12. Bearskin Lake First Nation (3) Boil Water 5/4/2022
13. BELWOOD LAKE Cyanobacteria Bloom 8/23/2024
14. Big Grassy First Nation Boil Water 7/22/2024
15. BLACK CREEK PROVINCIAL PARK Boil Water 5/25/2024
16. BLOOMFIELD (1) Boil Water 8/29/2024
17. BONNIE LAKE Cyanobacteria Bloom 7/5/2024
18. BRANTFORD (Lifebridges) Boil Water 6/26/2024
19. BRUCE MINES (Bruce Bay Cottages) Boil Water 9/30/2024
20. CABOT HEAD PROVINCIAL PARK Boil Water 5/25/2024
21. CALLANDER BAY Cyanobacteria Bloom 8/2/2024
22. Camp Kagama Water Quality Advisory 6/3/2024
23. Campbellford Boil Water 6/4/2020
24. CAMPBELLVILLE Old Diamond Boil Water 8/23/2024
25. CARRYING PLACE (Stoneburg Cove Resort) Boil Water 9/17/2024
26. Cat Lake First Nation Boil Water 2/26/2024
27. Cedar Creek Campground Boil Water 7/14/2020
28. CENTENNIAL PARK POND Cyanobacteria Bloom 8/16/2024
29. CENTERVILLE (1) Boil Water 1/2/2025
30. CHAPLEAU (1) Boil Water 8/10/2023
31. CHAPLEAU-NEMEGOSENDA RIVER PROV PK Boil Water 5/25/2024
32. CHATHAM (Glasshouse Nursery & Garden Centre) Boil Water 12/12/2024
33. Chippewas of Nawash-Cape Croker First Nation Boil Water 1/21/2019
34. Chippewas of the Thames Boil Water 12/14/2022
35. COBDEN (Logos Land Resort SDWS Campground) Boil Water 7/8/2024
36. Columbus Golf & Country Club Boil Water 5/21/2021
37. COMMANDA LAKE Cyanobacteria Bloom 6/30/2024
38. CONESTOGO LAKE Cyanobacteria Bloom 9/13/2024
39. CORBYVILLE (Signal Brewing Co) Boil Water 3/15/2025
40. CORNWALL (Glen Walter System) Boil Water 12/25/2024
41. Deer Lake First Nation Boil Water 10/15/2019
42. DEPARTURE LAKE Cyanobacteria Bloom 8/22/2024
43. DUNDALK Drinking Water System Water Quality Advisory 1/7/2025
44. DURHAM (1) Water Quality Advisory 3/8/2024
45. Eabametoong First Nation Boil Water 8/1/2001
46. ESPANOLA (Mountain Cove Lodge) Boil Water 8/14/2024
47. Ferme Butte and Bine Boil Water 7/6/2023
48. FOLEYET (Shenango Lodge) Boil Water 8/20/2024
49. FORT ALBANY First Nation Boil Water 3/7/2025
50. Fort Severn First Nation Boil Water 12/29/2022
51. FREDERICK HOUSE LAKE Cyanobacteria Bloom 9/15/2024
52. FRENCH RIVER Cyanobacteria Bloom 9/23/2024
53. FUSHIMI LAKE PROVINCIAL PARK Boil Water 9/8/2023
54. Georgian Bluffs Boil Water 8/26/2019
55. GEORGINA Boil Water 4/18/2024
56. Georgina Island Chippewa Boil Water 4/24/2017
57. Glen Walter Boil Water 5/18/2023
58. GOGAMA (IAMGOLD - Coté Gold Project) Boil Water 3/19/2025
59. GORDON LAKE Community Hall Boil Water 9/25/2024
60. Grassy Narrows First Nation Boil Water 8/29/2024
61. Green Wilderness Lodge Boil Water 8/17/2022
62. GUELPH LAKE Cyanobacteria Bloom 9/13/2024
63. Gull Bay First Nation Boil Water 4/30/2009
64. HALIBURTON Highlands of Hope Well Supply Boil Water 3/19/2025
65. HALTON HILLS (Mt. Zion Apostolic Ark Church of Jes Boil Water 10/24/2024
66. HAMPTON Boil Water 1/29/2024
67. HANOVER (Victory Fellowship Church) Water Quality Advisory 7/3/2024
68. Harcourt (1) Boil Water 8/4/2024
69. HARTINGTON (Lazy Acre Cottages) Boil Water 6/19/2021
70. HAZELWOOD LAKE Cyanobacteria Bloom 8/21/2024
71. HEARST (1) Boil Water 8/3/2024
72. HIGH LAKE Cyanobacteria Bloom 9/19/2024
73. HILLIER (Cold Creek Vineyards) Boil Water 10/4/2024
74. Hoard Station Boil Water 3/31/2023
75. HOLSTEIN (2) Water Quality Advisory 8/22/2024
76. HOPE BAY FOREST PROVINCIAL PARK Boil Water 5/25/2024
77. Horwood Lake Cyanobacteria Bloom 7/19/2023
78. Icarus Lake Cyanobacteria Bloom 7/6/2023
79. IRA LAKE PROVINCIAL PARK Boil Water 5/25/2024
80. IRON BRIDGE (Melwel Lodge) Boil Water 8/8/2024
81. Johnston Hrb.-Pine Tree Pt. Prov Park Boil Water 5/25/2024
82. Johson Landing Road - Winnipeg River Cyanobacteria Bloom 7/28/2023
83. Kalmo Sandy Beach Cyanobacteria Bloom 6/29/2023
84. Kashechewan Boil Water 12/3/2024
85. Kawartha Highland Provincial Park Boil Water 12/17/2020
86. KENOGAMING LAKE (Thunderstock Outfitters) Boil Water 5/22/2024
87. KENOGAMISIS LAKE Cyanobacteria Bloom 9/16/2024
88. KENORA Municipal Water System Boil Water 2/23/2025
89. Kicking Mule Ranch Boil Water 9/27/2023
90. LAKE BERNARD Cyanobacteria Bloom 7/19/2024
91. LAKE DALRYMPLE Cyanobacteria Bloom 9/24/2024
92. LAKE ERIE Cyanobacteria Bloom 8/1/2024
93. LAKE EUGENIA Cyanobacteria Bloom 8/15/2024
94. LAKE MUSKOKA Cyanobacteria Bloom 7/8/2024
95. LAKE NIAPENCO Cyanobacteria Bloom 8/27/2024
96. LAKE NIPIGON Cyanobacteria Bloom 8/26/2024
97. LAKE NIPISSING Cyanobacteria Bloom 8/14/2024
98. LAKE NOSBONSING Cyanobacteria Bloom 7/29/2024
99. Lake of the Woods Cyanobacteria Bloom 10/11/2023
100. LAKE ONTARIO (3) Cyanobacteria Bloom 8/27/2024
101. LAKE SCUGOG (2) Cyanobacteria Bloom 8/21/2024
102. LAKE SIMCOE Cyanobacteria Bloom 9/3/2024
103. LAKE ST. CLAIR Cyanobacteria Bloom 7/23/2024
104. LAKE ST. JOHN Cyanobacteria Bloom 8/1/2024
105. LAKE SUPERIOR (3) Cyanobacteria Bloom 8/27/2024
106. LEEs Creek (North Bay) Do Not Consume 2/22/2017
107. LIONS HEAD PROV PARK Boil Water 5/25/2024
108. LITTLE BRITAIN United Church Boil Water 1/23/2025
109. LITTLE LAKE Cyanobacteria Bloom 8/7/2024
110. LITTLE LAKE Cyanobacteria Bloom 8/1/2024
111. LITTLE TYNE LAKE Cyanobacteria Bloom 9/30/2024
112. LONG BEACH Water System Boil Water 4/10/2006
113. LONGS LAKE (Huntsville) Cyanobacteria Bloom 9/19/2024
114. Lost Lake Campground Boil Water 9/2/2022
115. MacLean Lake Cyanobacteria Bloom 8/14/2023
116. MacLeod Provincial Park Boil Water 11/18/2020
117. Maple Ridge Park Campground Boil Water 5/12/2023
118. MARIE LOUISE LAKE Cyanobacteria Bloom 9/26/2024
119. MARK S. BURNHAM PROV PK Boil Water 5/25/2024
120. Marten Falls First Nation Boil Water 7/18/2005
121. MASSEY Boil Water 4/25/2024
122. MAYNOOTH (Graphite Bible Camp) Do Not Consume 8/9/2024
123. MILTON (Humes Auction Farm) Do Not Consume 10/2/2024
124. Misery Bay Prov. Park Boil Water 8/1/2023
125. Mishkeegogamang First Nation Boil Water 5/8/2024
126. Missinaibi Provincial Park Boil Water 8/13/2021
127. Mohawks of Bay of Quinte Boil Water 9/2/2024
128. MOSQUITO LAKE Cyanobacteria Bloom 7/22/2024
129. Muskrat Dam Lake Reserve Boil Water 10/24/2003
130. Neskantaga First Nation Boil Water 2/1/1995
131. Newcastle Golf and Country Club Boil Water 5/21/2021
132. Nibinamik First Nation Boil Water 2/5/2013
133. NIGHT HAWK LAKE Cyanobacteria Bloom 9/14/2024
134. Nigigoonsiminikaaning First Nation Boil Water 3/13/2025
135. Nipissing First Nation Boil Water 2/27/2025
136. NORTH BAY Spill 12/4/2024
137. NORTH MIDDLESEX (2) Water Quality Advisory 8/23/2024
138. North Spirit Lake First Nation Boil Water 4/5/2019
139. North Spirit Lake Indian reserve Boil Water 8/20/2024
140. Northwest Angle 33 Boil Water 6/24/2024
141. OAKVILLE (2) Do Not Consume 1/15/2025
142. OLIVER PAIPOONGE Do Not Consume 3/9/2023
143. ONE ISLAND LAKE Cyanobacteria Bloom 8/12/2024
144. Oneida of The Thames First Nation Boil Water 9/1/2019
145. ORR LAKE Cyanobacteria Bloom 8/2/2024
146. Palmer Rapids - Maplehaus Boil Water 6/13/2023
147. PAUDASH LAKE Cyanobacteria Bloom 7/2/2024
148. PELEE ISLAND (2) Boil Water 6/25/2024
149. Pembroke - LJs Boil Water 6/10/2023
150. PETAWAWA (Pine Ridge Park & Resort) Boil Water 6/12/2024
151. Peterborough Cyanobacteria Bloom 7/24/2023
152. PICTON (1) Boil Water 9/10/2024
153. PICTON (Lake on the Mountain Brewing Company) Boil Water 12/5/2024
154. POTHOLES PROVINCIAL PARK Boil Water 5/25/2024
155. Rainy River First Nation Boil Water 7/8/2024
156. RAMSEY LAKE Cyanobacteria Bloom 9/13/2024
157. REMI LAKE Cyanobacteria Bloom 8/15/2024
158. Rene Brunelle Provincial Park Boil Water 12/4/2020
159. Rideau Ferry Country Home Boil Water 6/12/2024
160. RIVER VALLEY Outdoor Rink Do Not Consume 2/19/2025
161. ROSENEATH (Langs Family Resort & Marina) Boil Water 8/21/2024
162. Russell - Marvelville Community Centre Boil Water 8/15/2023
163. RUTH LAKE Cyanobacteria Bloom 9/30/2024
164. Sandy Lake First Nation Boil Water 10/10/2002
165. SAULT STE. MARIE Boil Water 9/25/2024
166. SEELEY’S BAY Boil Water 7/11/2023
167. Seine River First Nation Boil Water 2/10/2025
168. Shawanaga First Nation Boil Water 11/6/2024
169. Shelburne Boil Water 7/10/2023
170. SILVER LAKE Cyanobacteria Bloom 9/9/2024
171. Simcoe Water Quality Advisory 7/28/2017
172. SIOUX LOOKOUT Water System Boil Water 8/20/2024
173. Slate Falls First Nation Boil Water 11/11/2024
174. Slate Falls First Nation Boil Water 6/23/2023
175. Smokey Head-White Bluff Prov Pk Boil Water 5/25/2024
176. SPRING BAY (Freds Camp) Boil Water 9/7/2024
177. ST CLAIR RIVER Spill 8/3/2024
178. ST. CLAIR RIVER (Sarnia Harbour) Spill 7/11/2024
179. STAR LAKE Cyanobacteria Bloom 8/28/2024
180. SUNDRIDGE (Zion United Church) Do Not Consume 10/31/2024
181. Surprise Lake Cyanobacteria Bloom 8/17/2023
182. TEA LAKE - Northeast Shoreline Cyanobacteria Bloom 10/30/2023
183. The Shoals Prov. Park Boil Water 5/25/2024
184. THESSALON (Pinecrest Tent & Trailer Park WS) Boil Water 8/29/2024
185. THREE MILE LAKE Cyanobacteria Bloom 6/10/2024
186. THUNDER BAY - WEST LOON LAKE Cyanobacteria Bloom 8/28/2023
187. Timberwolf Lodge Restaurant Boil Water 7/22/2022
188. TROUT LAKE Cyanobacteria Bloom 6/24/2024
189. TROUT LAKE Cyanobacteria Bloom 9/30/2024
190. TWO ISLAND LAKE Cyanobacteria Bloom 8/22/2024
191. Twp of SELWYN (Condo Corp 949 Sharon Court) Water Quality Advisory 3/10/2025
192. VICTORIA HARBOUR Municipal WS Boil Water 7/8/2024
193. W. Leitch Organics Boil Water 5/26/2023
194. Wabigoon Lake Cyanobacteria Bloom 7/26/2023
195. WAINFLEET Boil Water 4/10/2006
196. WAKAMI LAKE Cyanobacteria Bloom 9/25/2024
197. Wakami Lake Provincial Park Do Not Consume 9/13/2024
198. WARREN Water System Boil Water 1/15/2024
199. WASI LAKE Cyanobacteria Bloom 8/9/2024
200. WEBBWOOD (Black Bear Camp) Do Not Consume 9/27/2024
201. Weenusk First Nation Boil Water 5/3/2024
202. What The Fries Boil Water 5/23/2023
203. White Lake Provincial Park Boil Water 5/18/2024
204. WHITESTONE LAKE Cyanobacteria Bloom 9/30/2024
205. WHITEWATER LAKE Cyanobacteria Bloom 9/17/2024
206. Whitson Lake Cyanobacteria Bloom 7/7/2023
207. WOOLWICH Reservoir Cyanobacteria Bloom 9/13/2024
208. Young Lake also known as Trout Lake (Northeast Sho Boil Water 9/14/2023
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