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