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October 17, 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. BELWOOD LAKE Cyanobacteria Bloom 7/23/2025
18. BLACK CREEK PROVINCIAL PARK Boil Water 5/25/2024
19. BLACKSTOCK (Souls Path Retreats Lodge Winter Well) Boil Water 3/25/2025
20. BOURGET Boil Water 8/20/2025
21. BRANTFORD (Lifebridges) Boil Water 6/26/2024
22. BRIGHTON Boil Water 7/14/2020
23. CABOT HEAD PROVINCIAL PARK Boil Water 5/25/2024
24. Camp Kagama Water Quality Advisory 6/3/2024
25. Campbellford Boil Water 6/4/2020
26. CAMPBELLVILLE Old Diamond Boil Water 8/23/2024
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. CHIPPEWAS FN Do Not Consume 7/21/2025
33. Chippewas of Nawash-Cape Croker First Nation Boil Water 1/21/2019
34. Chippewas of the Thames Boil Water 12/14/2022
35. Chippewas of the Thames Boil Water 7/21/2025
36. COBDEN (Logos Land Resort SDWS Campground) Boil Water 7/8/2024
37. COCHRANE (North Adventure Inn) Do Not Consume 5/22/2025
38. COLLINGWOOD Spill 4/2/2025
39. Columbus Golf & Country Club Boil Water 5/21/2021
40. COMMANDA LAKE Cyanobacteria Bloom 6/26/2025
41. CONESTOGO LAKE Cyanobacteria Bloom 8/12/2025
42. CORNWALL Boil Water 7/22/2025
43. Deer Lake First Nation Boil Water 10/15/2019
44. DRACON (GCCA Harmonie) Boil Water 5/17/2024
45. DUNDALK Drinking Water System Water Quality Advisory 1/7/2025
46. DURHAM (1) Water Quality Advisory 3/8/2024
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. 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. Grassy Narrows First Nation Boil Water 8/29/2024
61. Green Wilderness Lodge Boil Water 8/17/2022
62. Gull Bay First Nation Boil Water 4/30/2009
63. HAMMOND Boil Water 10/2/2025
64. HANOVER Boil Water 8/11/2025
65. HANOVER (Victory Fellowship Church) Water Quality Advisory 7/3/2024
66. HARCOURT Boil Water 8/4/2024
67. HARCOURT Boil Water 10/10/2025
68. HARTINGTON (Lazy Acre Cottages) Boil Water 6/19/2021
69. HARWOOD Boil Water 10/1/2025
70. HASTINGS Boil Water 8/8/2025
71. HAWK JUNCTION Boil Water 9/17/2025
72. HEARST (1) Boil Water 8/3/2024
73. HEYDEN Boil Water 10/10/2025
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. KAWARTHA LAKES Boil Water 7/8/2025
84. Kee-Way-Win First Nation Boil Water 6/9/2025
85. KENOGAMING LAKE (Thunderstock Outfitters) Boil Water 5/22/2024
86. KENOGAMISIS LAKE Cyanobacteria Bloom 8/20/2025
87. Kicking Mule Ranch Boil Water 9/27/2023
88. KILLBEAR PROVINCIAL PARK Boil Water 5/9/2025
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. LANCASTER Boil Water 6/30/2025
95. LEEs Creek (North Bay) Do Not Consume 2/22/2017
96. LIMER Boil Water 8/21/2025
97. LIONS HEAD PROV PARK Boil Water 5/25/2024
98. LITTLE BRITAIN Boil Water 10/4/2025
99. LONG BEACH Water System Boil Water 4/10/2006
100. Lost Lake Campground Boil Water 9/2/2022
101. MacLeod Provincial Park Boil Water 11/18/2020
102. MAGNETAWAN Boil Water 9/18/2025
103. Maple Ridge Park Campground Boil Water 5/12/2023
104. MARK S. BURNHAM PROV PK Boil Water 5/25/2024
105. MARMORA Boil Water 9/9/2025
106. Marten Falls First Nation Boil Water 7/18/2005
107. MARTEN RIVER PROV PK Boil Water 8/16/2025
108. MASSEY Boil Water 4/25/2024
109. MAYNOOTH (Graphite Bible Camp) Do Not Consume 8/9/2024
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 (3) Boil Water 5/8/2025
114. Missinaibi Provincial Park Boil Water 8/13/2021
115. Mohawks of Bay of Quinte Boil Water 9/2/2024
116. Muskrat Dam Lake Reserve Boil Water 10/24/2003
117. Neskantaga First Nation Boil Water 2/1/1995
118. Newcastle Golf and Country Club Boil Water 5/21/2021
119. Nibinamik First Nation Boil Water 2/5/2013
120. NORLAND Boil Water 10/1/2025
121. NORTH BAY Spill 12/4/2024
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 6/25/2024
131. PELEE ISLAND (2) Boil Water 8/28/2025
132. Pembroke - LJs Boil Water 6/10/2023
133. PETAWAWA (Pine Ridge Park & Resort) Boil Water 6/12/2024
134. PHILLIP EDWARD ISLAND Boil Water 9/11/2025
135. POTHOLES PROVINCIAL PARK Boil Water 5/25/2024
136. RAMARA Water Quality Advisory 4/1/2025
137. RAMSEY LAKE Cyanobacteria Bloom 7/11/2025
138. Rene Brunelle Provincial Park Boil Water 12/4/2020
139. Rideau Ferry Country Home Boil Water 6/12/2024
140. RIVER VALLEY Outdoor Rink Do Not Consume 2/19/2025
141. ROCK POINT PROV PK Do Not Consume 9/3/2025
142. ROCKY ISLET BAY Cyanobacteria Bloom 8/26/2025
143. ROSENEATH (Langs Family Resort & Marina) Boil Water 8/21/2024
144. RUSCOM RIVER Cyanobacteria Bloom 7/18/2025
145. Russell - Marvelville Community Centre Boil Water 8/15/2023
146. Sandy Lake First Nation Boil Water 10/10/2002
147. SEELEY’S BAY Boil Water 7/11/2023
148. Seine River First Nation Boil Water 2/10/2025
149. SEVERN (Coldwater) Spill 4/1/2025
150. Shelburne Boil Water 7/10/2023
151. Simcoe Water Quality Advisory 7/28/2017
152. Slate Falls First Nation Boil Water 6/23/2023
153. Slate Falls First Nation Boil Water 11/6/2024
154. Smokey Head-White Bluff Prov Pk Boil Water 5/25/2024
155. SPRING BAY (Freds Camp) Boil Water 9/7/2024
156. ST. GEORGE Boil Water 10/7/2025
157. ST. JOSEPH ISLAND (Jocelyn Twp Community Hall) Boil Water 4/9/2025
158. STAR LAKE Cyanobacteria Bloom 7/2/2025
159. SUNDRIDGE (Zion United Church) Do Not Consume 10/31/2024
160. The Shoals Prov. Park Boil Water 5/25/2024
161. THORNE Boil Water 7/31/2025
162. THREE MILE LAKE Cyanobacteria Bloom 8/12/2025
163. Timberwolf Lodge Restaurant Boil Water 7/22/2022
164. TWEED (2) Do Not Consume 9/24/2025
165. Twp of SELWYN (Condo Corp 949 Sharon Court) Water Quality Advisory 3/10/2025
166. UPPER ISLAND LAKE Cyanobacteria Bloom 9/17/2025
167. VICTORIA HARBOUR Municipal WS Boil Water 7/8/2024
168. W. Leitch Organics Boil Water 5/26/2023
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. What The Fries Boil Water 5/23/2023
175. White Lake Provincial Park Boil Water 5/18/2024
176. Whitesand First Nation Boil Water 6/17/2025
177. WHITESTONE LAKE Cyanobacteria Bloom 9/17/2025
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