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