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November 24, 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. ALEXANDRIA Boil Water 8/8/2025
3. ALGOMA MILLS Boil Water 9/10/2025
4. ALGONQUIN PROV PK Boil Water 8/1/2025
5. ALLENFORD Boil Water 7/25/2025
6. Anishnaabeg of Naongashiing First Nation Boil Water 2/15/2019
7. APSEY LAKE Cyanobacteria Bloom 9/4/2025
8. AYLMER (2) Water Quality Advisory 12/15/2022
9. AYTON Lodge Water Quality Advisory 6/25/2024
10. BASS LAKE Cyanobacteria Bloom 7/18/2025
11. BASS LAKE Boil Water 9/12/2025
12. Baycrest Lodge Boil Water 6/2/2023
13. BAYVIEW ESCARPMENT PROV PK Boil Water 5/25/2024
14. BEARDMORE Boil Water 6/7/2025
15. Bearskin Lake First Nation (2) Boil Water 2/26/2020
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. 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. CENTERVILLE (1) Boil Water 1/2/2025
27. CHAPLEAU (1) Boil Water 8/10/2023
28. CHAPLEAU (Pellows Best Canadian Fishing) Boil Water 6/2/2025
29. CHAPLEAU-NEMEGOSENDA RIVER PROV PK Boil Water 5/25/2024
30. CHATHAM (Glasshouse Nursery & Garden Centre) Boil Water 12/12/2024
31. Chippewas of Nawash-Cape Croker First Nation Boil Water 1/21/2019
32. Chippewas of the Thames Boil Water 7/21/2025
33. Chippewas of the Thames Boil Water 12/14/2022
34. COBDEN (Logos Land Resort SDWS Campground) Boil Water 7/8/2024
35. COCHRANE (North Adventure Inn) Do Not Consume 5/22/2025
36. COLLINGWOOD Spill 4/2/2025
37. Columbus Golf & Country Club Boil Water 5/21/2021
38. COMMANDA LAKE Cyanobacteria Bloom 6/26/2025
39. CONESTOGO LAKE Cyanobacteria Bloom 8/12/2025
40. CORNWALL Boil Water 7/22/2025
41. Deer Lake F|irst Nation Boil Water 10/15/2019
42. Deer Lake First Nation Boil Water 10/21/2019
43. DRACON (GCCA Harmonie) Boil Water 5/17/2024
44. DUNDALK Drinking Water System Water Quality Advisory 1/7/2025
45. DURHAM (1) Water Quality Advisory 3/8/2024
46. Eabametoong First Nation Boil Water 8/1/2001
47. ESPANOLA (Mountain Cove Lodge) Boil Water 8/14/2024
48. FALCONBRIDGE Spill 9/24/2025
49. FENELON FALLS Boil Water 9/18/2025
50. Ferme Butte and Bine Boil Water 7/6/2023
51. FOLEYET (Shenango Lodge) Boil Water 8/20/2024
52. Fort Severn First Nation Boil Water 12/14/2024
53. FOXBORO (Belleville Pizzeria / Foxboro General Sto Boil Water 4/12/2025
54. FUSHIMI LAKE PROVINCIAL PARK Boil Water 9/8/2023
55. Gakijiwanong Anishinaabe First Nation Boil Water 1/5/2022
56. Georgian Bluffs Boil Water 8/26/2019
57. GEORGINA Boil Water 4/18/2024
58. Georgina Island Chippewa Boil Water 4/24/2017
59. GORDON LAKE Community Hall Boil Water 9/25/2024
60. GRAND FALLS in ALGOMA Boil Water 8/21/2025
61. Grassy Narrows First Nation Boil Water 8/29/2024
62. Green Wilderness Lodge Boil Water 8/17/2022
63. Gull Bay First Nation Boil Water 4/30/2009
64. HANOVER Boil Water 8/11/2025
65. HANOVER (Victory Fellowship Church) Water Quality Advisory 7/3/2024
66. HARCOURT Boil Water 10/10/2025
67. HARCOURT Boil Water 8/4/2024
68. HARTINGTON (Lazy Acre Cottages) Boil Water 6/19/2021
69. HASTINGS Boil Water 8/8/2025
70. HAWK JUNCTION Boil Water 9/17/2025
71. HEARST (1) Boil Water 8/3/2024
72. HEYDEN Boil Water 10/10/2025
73. HILLIER Boil Water 11/6/2025
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. ICARUS LAKE Cyanobacteria Bloom 9/4/2025
78. IRA LAKE PROVINCIAL PARK Boil Water 5/25/2024
79. IRON BRIDGE (Melwel Lodge) Boil Water 8/8/2024
80. Johnston Hrb.-Pine Tree Pt. Prov Park Boil Water 5/25/2024
81. Kashechewan Boil Water 12/3/2024
82. Kawartha Highland Provincial Park Boil Water 12/17/2020
83. Kee-Way-Win First Nation Boil Water 6/9/2025
84. KENOGAMING LAKE (Thunderstock Outfitters) Boil Water 5/22/2024
85. KENOGAMISIS LAKE Cyanobacteria Bloom 8/20/2025
86. Kicking Mule Ranch Boil Water 9/27/2023
87. KILLBEAR PROVINCIAL PARK Boil Water 5/9/2025
88. Kitchenuhmaykoosib Inninuwug First Nation Boil Water 9/12/2025
89. LAKE NIPISSING Cyanobacteria Bloom 8/12/2025
90. LAKE ONTARIO Cyanobacteria Bloom 8/8/2025
91. LAKE SCUGOG Cyanobacteria Bloom 7/11/2025
92. LAKE ST. JOHN Cyanobacteria Bloom 8/12/2025
93. LAKE TIMISKAMING Cyanobacteria Bloom 7/9/2025
94. LEEs Creek (North Bay) Do Not Consume 2/22/2017
95. LIMER Boil Water 8/21/2025
96. LIONS HEAD PROV PARK Boil Water 5/25/2024
97. LITTLE BRITAIN Boil Water 10/4/2025
98. LONG BEACH Water System Boil Water 4/10/2006
99. Lost Lake Campground Boil Water 9/2/2022
100. MacLeod Provincial Park Boil Water 11/18/2020
101. MAGNETAWAN Boil Water 9/18/2025
102. Maple Ridge Park Campground Boil Water 5/12/2023
103. MARK S. BURNHAM PROV PK Boil Water 5/25/2024
104. MARMORA Boil Water 9/9/2025
105. Marten Falls First Nation Boil Water 7/18/2005
106. MARTEN RIVER PROV PK Boil Water 8/16/2025
107. MASSEY Boil Water 4/25/2024
108. MAYNOOTH (Graphite Bible Camp) Do Not Consume 8/9/2024
109. MILFORD Boil Water 10/16/2025
110. MILTON (Humes Auction Farm) Do Not Consume 10/2/2024
111. MINDEN (2) Boil Water 9/29/2025
112. Misery Bay Prov. Park Boil Water 8/1/2023
113. Mishkeegogamang First Nation Boil Water 5/8/2024
114. Mishkeegogamang First Nation (3) Boil Water 5/8/2025
115. Missinaibi Provincial Park Boil Water 8/13/2021
116. Mohawks of Bay of Quinte Boil Water 9/2/2024
117. Munsee-Delaware First Nation Boil Water 2/24/2024
118. Muskrat Dam Lake Reserve Boil Water 10/24/2003
119. Neskantaga First Nation Boil Water 2/1/1995
120. Newcastle Golf and Country Club Boil Water 5/21/2021
121. Nibinamik First Nation Boil Water 2/5/2013
122. NORTH BAY Spill 12/4/2024
123. North Caribou Lake Firast Nation Boil Water 3/3/2020
124. NORTH MIDDLESEX (2) Water Quality Advisory 8/23/2024
125. North Spirit Lake First Nation Boil Water 4/5/2019
126. North Spirit Lake Indian reserve Boil Water 8/20/2024
127. OAKVILLE Do Not Consume 9/11/2025
128. OLIVER PAIPOONGE Do Not Consume 3/9/2023
129. OMEMEE Boil Water 11/15/2025
130. Oneida of The Thames First Nation Boil Water 9/1/2019
131. ORILLIA Spill 4/2/2025
132. Palmer Rapids - Maplehaus Boil Water 6/13/2023
133. PELEE ISLAND (2) Boil Water 6/25/2024
134. PELEE ISLAND (2) Boil Water 8/28/2025
135. Pembroke - LJs Boil Water 6/10/2023
136. PETAWAWA (Pine Ridge Park & Resort) Boil Water 6/12/2024
137. Pic Mobert First Nation Boil Water 9/22/2025
138. Pikangikum First Nation Boil Water 2/8/2024
139. Poplar Hill First Nation Boil Water 9/17/2025
140. POTHOLES PROVINCIAL PARK Boil Water 5/25/2024
141. Rainy River First Nation Boil Water 2/6/2024
142. RAMARA Water Quality Advisory 4/1/2025
143. RAMSEY LAKE Cyanobacteria Bloom 7/11/2025
144. Rene Brunelle Provincial Park Boil Water 12/4/2020
145. Rideau Ferry Country Home Boil Water 6/12/2024
146. RIVER VALLEY Outdoor Rink Do Not Consume 2/19/2025
147. ROCK POINT PROV PK Do Not Consume 9/3/2025
148. ROCKY ISLET BAY Cyanobacteria Bloom 8/26/2025
149. ROSENEATH (Langs Family Resort & Marina) Boil Water 8/21/2024
150. RUSCOM RIVER Cyanobacteria Bloom 7/18/2025
151. Russell - Marvelville Community Centre Boil Water 8/15/2023
152. Sandy Lake First Nation Boil Water 10/10/2002
153. SEELEY’S BAY Boil Water 7/11/2023
154. Seine River First Nation Boil Water 2/10/2025
155. SEVERN (Coldwater) Spill 4/1/2025
156. Shawanaga First Nation Boil Water 7/11/2024
157. Shelburne Boil Water 7/10/2023
158. Simcoe Water Quality Advisory 7/28/2017
159. Slate Falls First Nation Boil Water 6/23/2023
160. Slate Falls First Nation Boil Water 11/6/2024
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. THORNE Boil Water 7/31/2025
168. THREE MILE LAKE Cyanobacteria Bloom 8/12/2025
169. Timberwolf Lodge Restaurant Boil Water 7/22/2022
170. TWEED (2) Do Not Consume 9/24/2025
171. Twp of SELWYN (Condo Corp 949 Sharon Court) Water Quality Advisory 3/10/2025
172. UPPER ISLAND LAKE Cyanobacteria Bloom 9/17/2025
173. VICTORIA HARBOUR Municipal WS Boil Water 7/8/2024
174. Wabauskang First Nation Boil Water 5/16/2025
175. WAINFLEET Boil Water 4/10/2006
176. WAKOMATA Boil Water 10/1/2025
177. WARREN Water System Boil Water 1/15/2024
178. WASI LAKE Cyanobacteria Bloom 8/12/2025
179. Wawakapewin First Nation Boil Water 7/21/2023
180. What The Fries Boil Water 5/23/2023
181. White Lake Provincial Park Boil Water 5/18/2024
182. Whitesand First Nation Boil Water 6/17/2025
183. WHITESTONE LAKE Cyanobacteria Bloom 9/17/2025
184. WOODVILLE Boil Water 11/7/2025
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