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August 24, 2026

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Advisories for Ontario

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Select municipality for details:

MunicipalityTypeSince
1. ALGOMA MILLS Boil Water 9/10/2025
2. ALGONQUIN HIGHLANDS Boil Water 6/5/2026
3. ALGONQUIN PROV PK Boil Water 5/1/2026
4. ALLENFORD Boil Water 7/25/2025
5. Anishnaabeg of Naongashiing First Nation Boil Water 2/15/2019
6. APSEY LAKE Cyanobacteria Bloom 9/4/2025
7. ATIKOKAN Boil Water 7/16/2026
8. AYLMER (2) Water Quality Advisory 12/15/2022
9. AYTON Lodge Water Quality Advisory 6/25/2024
10. BASS LAKE Boil Water 9/12/2025
11. BASS LAKE Cyanobacteria Bloom 7/18/2025
12. BATCHAWANA BAY Boil Water 6/8/2026
13. Baycrest Lodge Boil Water 6/2/2023
14. BAYVIEW ESCARPMENT PROV PK Boil Water 5/25/2024
15. BEARDMORE Boil Water 6/7/2025
16. Bearskin Lake First Nation (2) Boil Water 2/26/2020
17. BEAVERTON Do Not Consume 4/1/2026
18. BELWOOD LAKE Cyanobacteria Bloom 7/23/2025
19. BLACK CREEK PROVINCIAL PARK Boil Water 5/25/2024
20. BLACKSTOCK (Souls Path Retreats Lodge Winter Well) Boil Water 3/25/2025
21. BOURGET Boil Water 8/20/2025
22. BRANTFORD (Lifebridges) Boil Water 6/26/2024
23. BROOKLIN Boil Water 5/11/2026
24. BRUCE MINES Boil Water 5/8/2026
25. CABOT HEAD PROVINCIAL PARK Boil Water 5/25/2024
26. Camp Kagama Water Quality Advisory 6/3/2024
27. Campbellford Boil Water 6/4/2020
28. CAMPBELLVILLE Old Diamond Boil Water 8/23/2024
29. CARLING Boil Water 11/11/2025
30. CASSELMAN - East Haven Sun Club Boil Water 7/5/2026
31. CAT LAKE FIRST NATION Boil Water 3/11/2024
32. CENTERVILLE (1) Boil Water 1/2/2025
33. CHAPLEAU (1) Boil Water 8/10/2023
34. CHAPLEAU (Pellows Best Canadian Fishing) Boil Water 6/2/2025
35. CHAPLEAU-NEMEGOSENDA RIVER PROV PK Boil Water 5/25/2024
36. CHATHAM (Glasshouse Nursery & Garden Centre) Boil Water 12/12/2024
37. Chippewas of Georgina Island First Nation Boil Water 4/24/2017
38. Chippewas of Nawash First Nation Boil Water 1/21/2019
39. Chippewas of Thames First Nation Boil Water 12/14/2021
40. CHUTE A BLONDEAU Boil Water 7/28/2026
41. COBDEN (Logos Land Resort SDWS Campground) Boil Water 7/8/2024
42. COBOCONK Boil Water 3/8/2026
43. COBOCONK Boil Water 11/28/2025
44. COCHRANE (North Adventure Inn) Do Not Consume 5/22/2025
45. COLLINGWOOD Spill 4/2/2025
46. Columbus Golf & Country Club Boil Water 5/21/2021
47. COMMANDA LAKE Cyanobacteria Bloom 6/26/2025
48. CONESTOGO LAKE Cyanobacteria Bloom 8/12/2025
49. CORNWALL Boil Water 7/22/2025
50. Deer Lake F|irst Nation Boil Water 10/15/2019
51. DEER LAKE FIRST NATION Boil Water 10/21/2025
52. DOG LAKE Cyanobacteria Bloom 8/5/2026
53. DOG LAKE-BOLDUC BAY Cyanobacteria Bloom 7/25/2026
54. DOKIS FIRST NATION Boil Water 6/24/2026
55. DRACON (GCCA Harmonie) Boil Water 5/17/2024
56. DUNDALK Drinking Water System Water Quality Advisory 1/7/2025
57. DUNSFORD - Country Creations Boil Water 4/23/2026
58. DURHAM (1) Water Quality Advisory 3/8/2024
59. Eabametoong First Nation Boil Water 8/1/2001
60. ELLIOTT LAKE Cyanobacteria Bloom 8/5/2026
61. ERIN Boil Water 4/24/2026
62. ESPANOLA (Mountain Cove Lodge) Boil Water 8/14/2024
63. FENELON FALLS Boil Water 9/18/2025
64. Ferme Butte and Bine Boil Water 7/6/2023
65. FOLEYET (Shenango Lodge) Boil Water 8/20/2024
66. FORT ALBANY FIRST NATION Boil Water 5/9/2026
67. FOXBORO (Belleville Pizzeria / Foxboro General Sto Boil Water 4/12/2025
68. FUSHIMI LAKE PROVINCIAL PARK Boil Water 6/1/2026
69. Gakijiwanong Anishinaabe First Nation Boil Water 1/5/2022
70. Georgian Bluffs Boil Water 8/26/2019
71. GEORGINA Boil Water 4/18/2024
72. Georgina Island Chippewa Boil Water 4/24/2017
73. GORDON LAKE Community Hall Boil Water 9/25/2024
74. GRAND FALLS in ALGOMA Boil Water 8/21/2025
75. GRASSY NARROWS FIRST NATION Boil Water 8/9/2024
76. Green Wilderness Lodge Boil Water 8/17/2022
77. Gull Bay First Nation Boil Water 4/30/2009
78. HALI BURTON Boil Water 11/26/2025
79. HAMILTON Boil Water 5/24/2026
80. HAMILTON Do Not Consume 4/1/2026
81. HANOVER Boil Water 5/11/2026
82. HANOVER (Victory Fellowship Church) Water Quality Advisory 7/3/2024
83. HARCOURT Boil Water 8/4/2024
84. HARTINGTON (Lazy Acre Cottages) Boil Water 6/19/2021
85. HASTINGS Boil Water 8/8/2025
86. HAWK JUNCTION Boil Water 9/17/2025
87. HAWKEYE LAKE Cyanobacteria Bloom 7/29/2026
88. HEARST (1) Boil Water 8/3/2024
89. HEYDEN Boil Water 5/15/2026
90. HILLIER Boil Water 11/6/2025
91. Hoard Station Boil Water 3/31/2023
92. HOLSTEIN (2) Water Quality Advisory 8/22/2024
93. HOPE BAY FOREST PROVINCIAL PARK Boil Water 5/25/2024
94. ICARUS LAKE Cyanobacteria Bloom 9/4/2025
95. INGERSOLL Boil Water 8/5/2026
96. IRA LAKE PROVINCIAL PARK Boil Water 5/25/2024
97. IRON BRIDGE Boil Water 5/8/2026
98. IRON BRIDGE (Melwel Lodge) Boil Water 8/8/2024
99. IROQUOIS Boil Water 5/15/2026
100. Johnston Hrb.-Pine Tree Pt. Prov Park Boil Water 5/25/2024
101. KASHECHEWAN Do Not Consume 1/29/2026
102. KASHECHEWAN Do Not Consume 1/5/2026
103. Kawartha Highland Provincial Park Boil Water 12/17/2020
104. Kee-Way-Win First Nation Boil Water 3/30/2026
105. KENOGAMING LAKE (Thunderstock Outfitters) Boil Water 5/22/2024
106. KENOGAMISIS LAKE Cyanobacteria Bloom 8/20/2025
107. KICHENUHMAYKOOSIB FIRST NATION Boil Water 8/13/2026
108. Kicking Mule Ranch Boil Water 9/27/2023
109. KILLBEAR PROVINCIAL PARK Boil Water 5/9/2025
110. KINGFISHER LAKE FIRST NATION Boil Water 7/22/2026
111. KINGSTON Boil Water 8/6/2026
112. KINGSTON - WELL WATER Boil Water 4/16/2026
113. KINGSVILLE Boil Water 7/26/2026
114. KIRKFIELD Boil Water 6/2/2026
115. LAKE ASPEY Cyanobacteria Bloom 11/27/2025
116. LAKE NIPISSING Cyanobacteria Bloom 8/12/2025
117. LAKE ONTARIO Cyanobacteria Bloom 8/8/2025
118. LAKE SCUGOG Cyanobacteria Bloom 7/11/2025
119. LAKE ST. JOHN Cyanobacteria Bloom 8/12/2025
120. LAKE SUPERIOR PROV PK Boil Water 5/7/2026
121. LAKE TIMISKAMING Cyanobacteria Bloom 7/9/2025
122. LEEs Creek (North Bay) Do Not Consume 2/22/2017
123. LEFAIVRE Do Not Consume 7/16/2026
124. LIMER Boil Water 8/21/2025
125. LINCOLN Flooding 8/4/2026
126. LIONS HEAD PROV PARK Boil Water 5/25/2024
127. LONG BEACH Water System Boil Water 4/10/2006
128. Lost Lake Campground Boil Water 9/2/2022
129. MacLeod Provincial Park Boil Water 11/18/2020
130. MADOC Do Not Consume 12/30/2025
131. MAGNETAWAN Boil Water 9/18/2025
132. Maple Ridge Park Campground Boil Water 5/12/2023
133. MARK S. BURNHAM PROV PK Boil Water 5/25/2024
134. Marten Falls First Nation Boil Water 4/30/2009
135. MARTEN RIVER PROV PK Boil Water 8/16/2025
136. MASSEY Boil Water 4/25/2024
137. MAYNOOTH (Graphite Bible Camp) Do Not Consume 8/9/2024
138. MILFORD Boil Water 12/12/2025
139. MILFORD Boil Water 10/16/2025
140. MILTON (Humes Auction Farm) Do Not Consume 10/2/2024
141. MINDEN (2) Boil Water 4/30/2026
142. Misery Bay Prov. Park Boil Water 8/1/2023
143. MISHKEEGOGAMANG FIRST NATION Boil Water 3/22/2026
144. Mishkeegogamang First Nation (2) Boil Water 8/7/2026
145. Missinaibi Provincial Park Boil Water 6/24/2026
146. MISSISSAUGA Do Not Consume 4/1/2026
147. MORAVIAN OF THE THAMES FIRST NATION Boil Water 7/6/2026
148. Munsee-Delaware First Nation Boil Water 2/24/2024
149. Muskrat Dam Lake Reserve Boil Water 10/24/2003
150. Neskantaga First Nation Boil Water 2/1/1995
151. Newcastle Golf and Country Club Boil Water 5/21/2021
152. NIAGARA ON THE LAKE Flooding 7/28/2026
153. Nibinamik First Nation Boil Water 2/5/2013
154. NOELVILLE Boil Water 2/12/2026
155. NORTH BAY Spill 12/4/2024
156. NORTH BAY Flooding 7/27/2026
157. North Caribou Lake Firast Nation Boil Water 3/3/2020
158. NORTH MIDDLESEX (2) Water Quality Advisory 8/23/2024
159. North Spirit Lake First Nation Boil Water 4/5/2019
160. North Spirit Lake Indian reserve Boil Water 4/5/2019
161. OAKLAND Boil Water 6/6/2026
162. OAKVILLE Do Not Consume 9/11/2025
163. OLIVER PAIPOONGE Do Not Consume 3/9/2023
164. ONAPING Boil Water 6/3/2026
165. Oneida of The Thames First Nation Boil Water 9/26/2019
166. ORLEANS -Fallingbrook elementary School Do Not Consume 5/8/2026
167. Palmer Rapids - Maplehaus Boil Water 6/13/2023
168. PELEE ISLAND Boil Water 6/25/2024
169. PELEE ISLAND (2) Boil Water 8/28/2025
170. Pembroke - LJs Boil Water 6/10/2023
171. Pikangikum First Nation Boil Water 2/8/2024
172. POTHOLES PROVINCIAL PARK Boil Water 5/25/2024
173. PUKASKWA NATIONAL PARK Boil Water 5/15/2026
174. PUKASKWA NATIONALPARK Cyanobacteria Bloom 8/17/2026
175. RAMARA Water Quality Advisory 4/1/2025
176. RAMORE Boil Water 2/27/2026
177. RAMSEY LAKE Cyanobacteria Bloom 7/11/2025
178. Rene Brunelle Provincial Park Boil Water 6/6/2026
179. Rideau Ferry Country Home Boil Water 6/12/2024
180. RIVER VALLEY Outdoor Rink Do Not Consume 2/19/2025
181. ROCK POINT PROV PK Boil Water 5/13/2026
182. ROCKY ISLET BAY Cyanobacteria Bloom 8/26/2025
183. ROSENEATH (Langs Family Resort & Marina) Boil Water 8/21/2024
184. RUSCOM RIVER Cyanobacteria Bloom 7/18/2025
185. Russell - Marvelville Community Centre Boil Water 8/15/2023
186. Sandy Lake First Nation Boil Water 10/10/2002
187. SAULT STE. MARIE Boil Water 3/20/2026
188. SEELEY’S BAY Boil Water 7/11/2023
189. SEINE RIVER FIRST NATION Boil Water 2/10/2025
190. SEVERN (Coldwater) Spill 4/1/2025
191. Shawanaga First Nation Boil Water 7/11/2024
192. Shelburne Boil Water 7/10/2023
193. Simcoe Water Quality Advisory 7/28/2017
194. SIX NATIONS OF THE GRAND RIVER FIRST NATION Boil Water 7/9/2026
195. Slate Falls First Nation Boil Water 6/23/2023
196. Smokey Head-White Bluff Prov Pk Boil Water 5/25/2024
197. SOUTH STORMONT TWP Do Not Consume 3/5/2026
198. SPRING BAY (Freds Camp) Boil Water 9/7/2024
199. ST CATHARINES Flooding 8/4/2026
200. STAR LAKE Cyanobacteria Bloom 7/2/2025
201. SUNDRIDGE (Zion United Church) Do Not Consume 10/31/2024
202. The Shoals Prov. Park Boil Water 5/25/2024
203. THOMASBURG Do Not Consume 12/30/2025
204. THORNE Boil Water 7/31/2025
205. THREE MILE LAKE Cyanobacteria Bloom 8/12/2025
206. Timberwolf Lodge Restaurant Boil Water 7/22/2022
207. TWEED (2) Do Not Consume 9/24/2025
208. Twp of SELWYN (Condo Corp 949 Sharon Court) Water Quality Advisory 3/10/2025
209. UPPER ISLAND LAKE Cyanobacteria Bloom 9/17/2025
210. VANKLEEK HILL Boil Water 7/16/2026
211. VICTORIA HARBOUR Municipal WS Boil Water 7/8/2024
212. WABASEEMOONG FIRST NATION Boil Water 4/20/2026
213. WABIGOON LAKE Ojibway Nation Boil Water 5/4/2026
214. WAINFLEET Boil Water 4/10/2006
215. WAKOMATA Boil Water 10/1/2025
216. WARREN Water System Boil Water 1/15/2024
217. WASI LAKE Cyanobacteria Bloom 8/12/2025
218. WAWA Boil Water 8/20/2026
219. Wawakapewin First Nation Boil Water 7/21/2023
220. What The Fries Boil Water 5/23/2023
221. White Lake Provincial Park Boil Water 6/20/2026
222. WHITESAND FIRST NATION Boil Water 6/8/2026
223. WHITESTONE LAKE Cyanobacteria Bloom 9/17/2025
224. WOLSELEY BAY Cyanobacteria Bloom 12/9/2025
225. WOODVILLE Boil Water 11/7/2025
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