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October 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. ALEXANDRIA (3) 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. Annes Chip Stand Boil Water 7/14/2023
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. Batchewana First Nation Boil Water 8/18/2025
13. Baycrest Lodge Boil Water 6/2/2023
14. BAYVIEW ESCARPMENT PROV PK Boil Water 5/25/2024
15. BEARDMORE Boil Water 6/7/2025
16. Bearskin Lake First Nation (3) Boil Water 5/4/2022
17. BELLEVILLE Boil Water 10/16/2025
18. BELWOOD LAKE Cyanobacteria Bloom 7/23/2025
19. BLACK CREEK PROVINCIAL PARK Boil Water 5/25/2024
20. BLACKSTOCK (Souls Path Retreats Lodge Winter Well) Boil Water 3/25/2025
21. BOBCAYGEON Boil Water 10/19/2025
22. BOURGET Boil Water 8/20/2025
23. BRANTFORD (Lifebridges) Boil Water 6/26/2024
24. CABOT HEAD PROVINCIAL PARK Boil Water 5/25/2024
25. Camp Kagama Water Quality Advisory 6/3/2024
26. Campbellford Boil Water 6/4/2020
27. CAMPBELLFORD Boil Water 10/19/2025
28. CAMPBELLVILLE Old Diamond Boil Water 8/23/2024
29. CENTERVILLE (1) Boil Water 1/2/2025
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 FN Do Not Consume 7/21/2025
35. Chippewas of Nawash-Cape Croker First Nation Boil Water 1/21/2019
36. Chippewas of the Thames Boil Water 12/14/2022
37. Chippewas of the Thames Boil Water 7/21/2025
38. COBDEN (Logos Land Resort SDWS Campground) Boil Water 7/8/2024
39. COCHRANE (North Adventure Inn) Do Not Consume 5/22/2025
40. COLLINGWOOD Spill 4/2/2025
41. Columbus Golf & Country Club Boil Water 5/21/2021
42. COMMANDA LAKE Cyanobacteria Bloom 6/26/2025
43. CONESTOGO LAKE Cyanobacteria Bloom 8/12/2025
44. CORNWALL Boil Water 7/22/2025
45. Deer Lake First Nation Boil Water 10/15/2019
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. ELLIOT LAKE Boil Water 10/22/2025
50. ESPANOLA (Mountain Cove Lodge) Boil Water 8/14/2024
51. FALCONBRIDGE Spill 9/24/2025
52. FENELON FALLS Boil Water 9/18/2025
53. Ferme Butte and Bine Boil Water 7/6/2023
54. FOLEYET (Shenango Lodge) Boil Water 8/20/2024
55. Fort Severn First Nation Boil Water 12/14/2024
56. FOXBORO (Belleville Pizzeria / Foxboro General Sto Boil Water 4/12/2025
57. FUSHIMI LAKE PROVINCIAL PARK Boil Water 9/8/2023
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 8/29/2024
64. Green Wilderness Lodge Boil Water 8/17/2022
65. Gull Bay First Nation Boil Water 4/30/2009
66. HALIBURTON Boil Water 10/19/2025
67. HAMMOND Boil Water 10/2/2025
68. HANOVER Boil Water 8/11/2025
69. HANOVER (Victory Fellowship Church) Water Quality Advisory 7/3/2024
70. HARCOURT Boil Water 10/10/2025
71. HARCOURT Boil Water 8/4/2024
72. HARTINGTON (Lazy Acre Cottages) Boil Water 6/19/2021
73. HASTINGS Boil Water 8/8/2025
74. HAWK JUNCTION Boil Water 9/17/2025
75. HEARST (1) Boil Water 8/3/2024
76. HEYDEN Boil Water 10/10/2025
77. Hoard Station Boil Water 3/31/2023
78. HOLSTEIN (2) Water Quality Advisory 8/22/2024
79. HOPE BAY FOREST PROVINCIAL PARK Boil Water 5/25/2024
80. ICARUS LAKE Cyanobacteria Bloom 9/4/2025
81. IRA LAKE PROVINCIAL PARK Boil Water 5/25/2024
82. IRON BRIDGE (Melwel Lodge) Boil Water 8/8/2024
83. Johnston Hrb.-Pine Tree Pt. Prov Park Boil Water 5/25/2024
84. Kashechewan Boil Water 12/3/2024
85. Kawartha Highland Provincial Park Boil Water 12/17/2020
86. KAWARTHA LAKES Boil Water 7/8/2025
87. Kee-Way-Win First Nation Boil Water 6/9/2025
88. KENOGAMING LAKE (Thunderstock Outfitters) Boil Water 5/22/2024
89. KENOGAMISIS LAKE Cyanobacteria Bloom 8/20/2025
90. Kicking Mule Ranch Boil Water 9/27/2023
91. KILLBEAR PROVINCIAL PARK Boil Water 5/9/2025
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. LANCASTER Boil Water 6/30/2025
98. LEEs Creek (North Bay) Do Not Consume 2/22/2017
99. LIMER Boil Water 8/21/2025
100. LIONS HEAD PROV PARK Boil Water 5/25/2024
101. LITTLE BRITAIN Boil Water 10/4/2025
102. LONG BEACH Water System Boil Water 4/10/2006
103. Lost Lake Campground Boil Water 9/2/2022
104. MacLeod Provincial Park Boil Water 11/18/2020
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. MARMORA Boil Water 9/9/2025
109. Marten Falls First Nation Boil Water 7/18/2005
110. MARTEN RIVER PROV PK Boil Water 8/16/2025
111. MASSEY Boil Water 4/25/2024
112. MAYNOOTH (Graphite Bible Camp) Do Not Consume 8/9/2024
113. MILFORD Boil Water 10/16/2025
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 (3) Boil Water 5/8/2025
118. Missinaibi Provincial Park Boil Water 8/13/2021
119. Mohawks of Bay of Quinte Boil Water 9/2/2024
120. Muskrat Dam Lake Reserve Boil Water 10/24/2003
121. Neskantaga First Nation Boil Water 2/1/1995
122. Newcastle Golf and Country Club Boil Water 5/21/2021
123. Nibinamik First Nation Boil Water 2/5/2013
124. NORTH BAY Spill 12/4/2024
125. NORTH MIDDLESEX (2) Water Quality Advisory 8/23/2024
126. North Spirit Lake First Nation Boil Water 4/5/2019
127. North Spirit Lake Indian reserve Boil Water 8/20/2024
128. OAKVILLE Do Not Consume 9/11/2025
129. OAKWOOD Boil Water 10/19/2025
130. OLIVER PAIPOONGE Do Not Consume 3/9/2023
131. Oneida of The Thames First Nation Boil Water 9/1/2019
132. ORILLIA Spill 4/2/2025
133. Palmer Rapids - Maplehaus Boil Water 6/13/2023
134. PELEE ISLAND (2) Boil Water 8/28/2025
135. PELEE ISLAND (2) Boil Water 6/25/2024
136. Pembroke - LJs Boil Water 6/10/2023
137. PETAWAWA (Pine Ridge Park & Resort) Boil Water 6/12/2024
138. PHILLIP EDWARD ISLAND Boil Water 9/11/2025
139. POTHOLES PROVINCIAL PARK Boil Water 5/25/2024
140. RAMARA Water Quality Advisory 4/1/2025
141. RAMSEY LAKE Cyanobacteria Bloom 7/11/2025
142. Rene Brunelle Provincial Park Boil Water 12/4/2020
143. Rideau Ferry Country Home Boil Water 6/12/2024
144. RIVER VALLEY Outdoor Rink Do Not Consume 2/19/2025
145. ROCK POINT PROV PK Do Not Consume 9/3/2025
146. ROCKY ISLET BAY Cyanobacteria Bloom 8/26/2025
147. ROSENEATH (Langs Family Resort & Marina) Boil Water 8/21/2024
148. RUSCOM RIVER Cyanobacteria Bloom 7/18/2025
149. Russell - Marvelville Community Centre Boil Water 8/15/2023
150. Sandy Lake First Nation Boil Water 10/10/2002
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. Shelburne Boil Water 7/10/2023
155. Simcoe Water Quality Advisory 7/28/2017
156. Slate Falls First Nation Boil Water 6/23/2023
157. Slate Falls First Nation Boil Water 11/6/2024
158. Smokey Head-White Bluff Prov Pk Boil Water 5/25/2024
159. SPRING BAY (Freds Camp) Boil Water 9/7/2024
160. ST. GEORGE Boil Water 10/7/2025
161. ST. JOSEPH ISLAND (Jocelyn Twp Community Hall) Boil Water 4/9/2025
162. STAR LAKE Cyanobacteria Bloom 7/2/2025
163. SUNDRIDGE (Zion United Church) Do Not Consume 10/31/2024
164. The Shoals Prov. Park Boil Water 5/25/2024
165. THORNE Boil Water 7/31/2025
166. THREE MILE LAKE Cyanobacteria Bloom 8/12/2025
167. Timberwolf Lodge Restaurant Boil Water 7/22/2022
168. TWEED (2) Do Not Consume 9/24/2025
169. Twp of SELWYN (Condo Corp 949 Sharon Court) Water Quality Advisory 3/10/2025
170. UPPER ISLAND LAKE Cyanobacteria Bloom 9/17/2025
171. VICTORIA HARBOUR Municipal WS Boil Water 7/8/2024
172. W. Leitch Organics Boil Water 5/26/2023
173. Wabauskang First Nation Boil Water 5/16/2025
174. WAINFLEET Boil Water 4/10/2006
175. WAKOMATA Boil Water 10/1/2025
176. WARREN Water System Boil Water 1/15/2024
177. WASI LAKE Cyanobacteria Bloom 8/12/2025
178. What The Fries Boil Water 5/23/2023
179. White Lake Provincial Park Boil Water 5/18/2024
180. Whitesand First Nation Boil Water 6/17/2025
181. WHITESTONE LAKE Cyanobacteria Bloom 9/17/2025
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