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