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April 25, 2026

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