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