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September 10, 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. ALGONQUIN PROV PK Boil Water 8/1/2025
4. ALLENFORD Boil Water 7/25/2025
5. Annes Chip Stand Boil Water 7/14/2023
6. APSEY LAKE Cyanobacteria Bloom 9/4/2025
7. AYLMER (2) Water Quality Advisory 12/15/2022
8. AYTON Boil Water 8/18/2025
9. AYTON Lodge Water Quality Advisory 6/25/2024
10. BASS LAKE Cyanobacteria Bloom 7/18/2025
11. Batchewana First Nation Boil Water 8/18/2025
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 (3) Boil Water 5/4/2022
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. BOBCAYGEON Boil Water 7/24/2025
20. BOURGET Boil Water 8/20/2025
21. BRANTFORD Boil Water 6/27/2025
22. BRANTFORD (Lifebridges) Boil Water 6/26/2024
23. BRIGHTON Boil Water 7/14/2020
24. BURLINGTON Boil Water 8/21/2025
25. CABOT HEAD PROVINCIAL PARK Boil Water 5/25/2024
26. Camp Kagama Water Quality Advisory 6/3/2024
27. Campbellford Boil Water 6/4/2020
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 7/21/2025
37. Chippewas of the Thames Boil Water 12/14/2022
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. ESPANOLA (Mountain Cove Lodge) Boil Water 8/14/2024
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. HALIBURTON Boil Water 8/14/2025
64. HANOVER Boil Water 8/11/2025
65. HANOVER (Victory Fellowship Church) Water Quality Advisory 7/3/2024
66. HARCOURT Boil Water 8/19/2025
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. HEARST (1) Boil Water 8/3/2024
71. HILLIER Boil Water 9/5/2025
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. Kashechewan Boil Water 12/3/2024
80. Kawartha Highland Provincial Park Boil Water 12/17/2020
81. KAWARTHA LAKES Boil Water 7/8/2025
82. Kee-Way-Win First Nation Boil Water 6/9/2025
83. KENOGAMING LAKE (Thunderstock Outfitters) Boil Water 5/22/2024
84. KENOGAMISIS LAKE Cyanobacteria Bloom 8/20/2025
85. Kicking Mule Ranch Boil Water 9/27/2023
86. KILLBEAR PROVINCIAL PARK Boil Water 5/9/2025
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 SUPERIOR PROV PK Boil Water 8/22/2025
92. LAKE TIMISKAMING Cyanobacteria Bloom 7/9/2025
93. LANCASTER Boil Water 6/30/2025
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. LONG BEACH Water System Boil Water 4/10/2006
98. Lost Lake Campground Boil Water 9/2/2022
99. MacLeod Provincial Park Boil Water 11/18/2020
100. Maple Ridge Park Campground Boil Water 5/12/2023
101. MARK S. BURNHAM PROV PK Boil Water 5/25/2024
102. MARMORA Boil Water 9/9/2025
103. Marten Falls First Nation Boil Water 7/18/2005
104. MARTEN RIVER PROV PK Boil Water 8/16/2025
105. MASSEY Boil Water 4/25/2024
106. MAYNOOTH (Graphite Bible Camp) Do Not Consume 8/9/2024
107. MILTON (Humes Auction Farm) Do Not Consume 10/2/2024
108. Misery Bay Prov. Park Boil Water 8/1/2023
109. Mishkeegogamang First Nation (3) Boil Water 5/8/2025
110. Missinaibi Provincial Park Boil Water 8/13/2021
111. Mohawks of Bay of Quinte Boil Water 9/2/2024
112. Muskrat Dam Lake Reserve Boil Water 10/24/2003
113. Neskantaga First Nation Boil Water 2/1/1995
114. Newcastle Golf and Country Club Boil Water 5/21/2021
115. Nibinamik First Nation Boil Water 2/5/2013
116. NORTH BAY Spill 12/4/2024
117. NORTH MIDDLESEX (2) Water Quality Advisory 8/23/2024
118. North Spirit Lake First Nation Boil Water 4/5/2019
119. North Spirit Lake Indian reserve Boil Water 8/20/2024
120. OAKVILLE (2) Do Not Consume 1/15/2025
121. OLIVER PAIPOONGE Do Not Consume 3/9/2023
122. Oneida of The Thames First Nation Boil Water 9/1/2019
123. ORILLIA Spill 4/2/2025
124. Palmer Rapids - Maplehaus Boil Water 6/13/2023
125. PELEE ISLAND (2) Boil Water 8/28/2025
126. PELEE ISLAND (2) Boil Water 6/25/2024
127. Pembroke - LJs Boil Water 6/10/2023
128. PETAWAWA (Pine Ridge Park & Resort) Boil Water 6/12/2024
129. POTHOLES PROVINCIAL PARK Boil Water 5/25/2024
130. RAMARA Water Quality Advisory 4/1/2025
131. RAMSEY LAKE Cyanobacteria Bloom 7/11/2025
132. Rene Brunelle Provincial Park Boil Water 12/4/2020
133. Rideau Ferry Country Home Boil Water 6/12/2024
134. RIVER VALLEY Outdoor Rink Do Not Consume 2/19/2025
135. ROCK POINT PROV PK Do Not Consume 9/3/2025
136. ROCKY ISLET BAY Cyanobacteria Bloom 8/26/2025
137. ROSENEATH (Langs Family Resort & Marina) Boil Water 8/21/2024
138. RUSCOM RIVER Cyanobacteria Bloom 7/18/2025
139. Russell - Marvelville Community Centre Boil Water 8/15/2023
140. Sandy Lake First Nation Boil Water 10/10/2002
141. SAULT STE. MARIE (2) Boil Water 5/24/2025
142. SEELEY’S BAY Boil Water 7/11/2023
143. Seine River First Nation Boil Water 2/10/2025
144. SEVERN (Coldwater) Spill 4/1/2025
145. Shelburne Boil Water 7/10/2023
146. Simcoe Water Quality Advisory 7/28/2017
147. Slate Falls First Nation Boil Water 6/23/2023
148. Slate Falls First Nation Boil Water 11/6/2024
149. Smokey Head-White Bluff Prov Pk Boil Water 5/25/2024
150. SPRING BAY (Freds Camp) Boil Water 9/7/2024
151. ST. JOSEPH ISLAND (Jocelyn Twp Community Hall) Boil Water 4/9/2025
152. STAR LAKE Cyanobacteria Bloom 7/2/2025
153. SUNDRIDGE (Zion United Church) Do Not Consume 10/31/2024
154. The Shoals Prov. Park Boil Water 5/25/2024
155. THORNE Boil Water 7/31/2025
156. THREE MILE LAKE Cyanobacteria Bloom 8/12/2025
157. Timberwolf Lodge Restaurant Boil Water 7/22/2022
158. Twp of SELWYN (Condo Corp 949 Sharon Court) Water Quality Advisory 3/10/2025
159. VICTORIA HARBOUR Municipal WS Boil Water 7/8/2024
160. W. Leitch Organics Boil Water 5/26/2023
161. Wabauskang First Nation Boil Water 5/16/2025
162. WAINFLEET Boil Water 4/10/2006
163. WARREN Water System Boil Water 1/15/2024
164. WASI LAKE Cyanobacteria Bloom 8/12/2025
165. WEBBWOOD Boil Water 8/21/2025
166. What The Fries Boil Water 5/23/2023
167. White Lake Provincial Park Boil Water 5/18/2024
168. Whitesand First Nation Boil Water 6/17/2025
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