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September 16, 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 Boil Water 8/18/2025
10. AYTON Lodge Water Quality Advisory 6/25/2024
11. BASS LAKE Cyanobacteria Bloom 7/18/2025
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 Boil Water 6/27/2025
22. BRANTFORD (Lifebridges) Boil Water 6/26/2024
23. BRIGHTON Boil Water 7/14/2020
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. CAMPBELLVILLE Old Diamond Boil Water 8/23/2024
28. CENTERVILLE (1) Boil Water 1/2/2025
29. CHAPLEAU (1) Boil Water 8/10/2023
30. CHAPLEAU (Pellows Best Canadian Fishing) Boil Water 6/2/2025
31. CHAPLEAU-NEMEGOSENDA RIVER PROV PK Boil Water 5/25/2024
32. CHATHAM (Glasshouse Nursery & Garden Centre) Boil Water 12/12/2024
33. CHIPPEWAS FN Do Not Consume 7/21/2025
34. Chippewas of Nawash-Cape Croker First Nation Boil Water 1/21/2019
35. Chippewas of the Thames Boil Water 7/21/2025
36. Chippewas of the Thames Boil Water 12/14/2022
37. COBDEN (Logos Land Resort SDWS Campground) Boil Water 7/8/2024
38. COCHRANE (North Adventure Inn) Do Not Consume 5/22/2025
39. COLLINGWOOD Spill 4/2/2025
40. Columbus Golf & Country Club Boil Water 5/21/2021
41. COMMANDA LAKE Cyanobacteria Bloom 6/26/2025
42. CONESTOGO LAKE Cyanobacteria Bloom 8/12/2025
43. CORNWALL Boil Water 7/22/2025
44. Deer Lake First Nation Boil Water 10/15/2019
45. DRACON (GCCA Harmonie) Boil Water 5/17/2024
46. DUNDALK Drinking Water System Water Quality Advisory 1/7/2025
47. DURHAM (1) Water Quality Advisory 3/8/2024
48. ESPANOLA (Mountain Cove Lodge) Boil Water 8/14/2024
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. 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. Grassy Narrows First Nation Boil Water 8/29/2024
60. Green Wilderness Lodge Boil Water 8/17/2022
61. Gull Bay First Nation Boil Water 4/30/2009
62. HANOVER Boil Water 8/11/2025
63. HANOVER (Victory Fellowship Church) Water Quality Advisory 7/3/2024
64. HARCOURT Boil Water 8/4/2024
65. HARCOURT Boil Water 8/19/2025
66. HARTINGTON (Lazy Acre Cottages) Boil Water 6/19/2021
67. HASTINGS Boil Water 8/8/2025
68. HEARST (1) Boil Water 8/3/2024
69. Hoard Station Boil Water 3/31/2023
70. HOLSTEIN (2) Water Quality Advisory 8/22/2024
71. HOPE BAY FOREST PROVINCIAL PARK Boil Water 5/25/2024
72. ICARUS LAKE Cyanobacteria Bloom 9/4/2025
73. IRA LAKE PROVINCIAL PARK Boil Water 5/25/2024
74. IRON BRIDGE (Melwel Lodge) Boil Water 8/8/2024
75. Johnston Hrb.-Pine Tree Pt. Prov Park Boil Water 5/25/2024
76. Kashechewan Boil Water 12/3/2024
77. Kawartha Highland Provincial Park Boil Water 12/17/2020
78. KAWARTHA LAKES Boil Water 7/8/2025
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. LAKE NIPISSING Cyanobacteria Bloom 8/12/2025
85. LAKE ONTARIO Cyanobacteria Bloom 8/8/2025
86. LAKE SCUGOG Cyanobacteria Bloom 7/11/2025
87. LAKE ST. JOHN Cyanobacteria Bloom 8/12/2025
88. LAKE TIMISKAMING Cyanobacteria Bloom 7/9/2025
89. LANCASTER Boil Water 6/30/2025
90. LEEs Creek (North Bay) Do Not Consume 2/22/2017
91. LIMER Boil Water 8/21/2025
92. LIONS HEAD PROV PARK Boil Water 5/25/2024
93. LONG BEACH Water System Boil Water 4/10/2006
94. Lost Lake Campground Boil Water 9/2/2022
95. MacLeod Provincial Park Boil Water 11/18/2020
96. Maple Ridge Park Campground Boil Water 5/12/2023
97. MARK S. BURNHAM PROV PK Boil Water 5/25/2024
98. MARMORA Boil Water 9/9/2025
99. Marten Falls First Nation Boil Water 7/18/2005
100. MARTEN RIVER PROV PK Boil Water 8/16/2025
101. MASSEY Boil Water 4/25/2024
102. MAYNOOTH (Graphite Bible Camp) Do Not Consume 8/9/2024
103. MILTON (Humes Auction Farm) Do Not Consume 10/2/2024
104. Misery Bay Prov. Park Boil Water 8/1/2023
105. Mishkeegogamang First Nation (3) Boil Water 5/8/2025
106. Missinaibi Provincial Park Boil Water 8/13/2021
107. Mohawks of Bay of Quinte Boil Water 9/2/2024
108. Muskrat Dam Lake Reserve Boil Water 10/24/2003
109. Neskantaga First Nation Boil Water 2/1/1995
110. Newcastle Golf and Country Club Boil Water 5/21/2021
111. Nibinamik First Nation Boil Water 2/5/2013
112. NORTH BAY Spill 12/4/2024
113. NORTH MIDDLESEX (2) Water Quality Advisory 8/23/2024
114. North Spirit Lake First Nation Boil Water 4/5/2019
115. North Spirit Lake Indian reserve Boil Water 8/20/2024
116. OAKVILLE (2) Do Not Consume 1/15/2025
117. OLIVER PAIPOONGE Do Not Consume 3/9/2023
118. Oneida of The Thames First Nation Boil Water 9/1/2019
119. ORILLIA Spill 4/2/2025
120. Palmer Rapids - Maplehaus Boil Water 6/13/2023
121. PELEE ISLAND (2) Boil Water 8/28/2025
122. PELEE ISLAND (2) Boil Water 6/25/2024
123. Pembroke - LJs Boil Water 6/10/2023
124. PETAWAWA (Pine Ridge Park & Resort) Boil Water 6/12/2024
125. PHILLIP EDWARD ISLAND Boil Water 9/11/2025
126. POTHOLES PROVINCIAL PARK Boil Water 5/25/2024
127. RAMARA Water Quality Advisory 4/1/2025
128. RAMORE Boil Water 9/10/2025
129. RAMSEY LAKE Cyanobacteria Bloom 7/11/2025
130. Rene Brunelle Provincial Park Boil Water 12/4/2020
131. Rideau Ferry Country Home Boil Water 6/12/2024
132. RIVER VALLEY Outdoor Rink Do Not Consume 2/19/2025
133. ROCK POINT PROV PK Do Not Consume 9/3/2025
134. ROCKY ISLET BAY Cyanobacteria Bloom 8/26/2025
135. ROSENEATH (Langs Family Resort & Marina) Boil Water 8/21/2024
136. RUSCOM RIVER Cyanobacteria Bloom 7/18/2025
137. Russell - Marvelville Community Centre Boil Water 8/15/2023
138. Sandy Lake First Nation Boil Water 10/10/2002
139. SAULT SAINTE MARIE Boil Water 9/12/2025
140. SAULT STE. MARIE (2) Boil Water 5/24/2025
141. SEELEY’S BAY Boil Water 7/11/2023
142. Seine River First Nation Boil Water 2/10/2025
143. SEVERN (Coldwater) Spill 4/1/2025
144. Shelburne Boil Water 7/10/2023
145. Simcoe Water Quality Advisory 7/28/2017
146. Slate Falls First Nation Boil Water 11/6/2024
147. Slate Falls First Nation Boil Water 6/23/2023
148. Smokey Head-White Bluff Prov Pk Boil Water 5/25/2024
149. SPRING BAY (Freds Camp) Boil Water 9/7/2024
150. ST. JOSEPH ISLAND (Jocelyn Twp Community Hall) Boil Water 4/9/2025
151. STAR LAKE Cyanobacteria Bloom 7/2/2025
152. SUNDRIDGE (Zion United Church) Do Not Consume 10/31/2024
153. TEMISKAMING SHORES Boil Water 9/9/2025
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. What The Fries Boil Water 5/23/2023
166. White Lake Provincial Park Boil Water 5/18/2024
167. Whitesand First Nation Boil Water 6/17/2025
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