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April 2, 2026

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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 Boil Water 9/12/2025
10. BASS LAKE Cyanobacteria Bloom 7/18/2025
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. BEAVERTON Do Not Consume 4/1/2026
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. BOURGET Boil Water 8/20/2025
20. BRANTFORD (Lifebridges) Boil Water 6/26/2024
21. BROCKTON Flooding 3/20/2026
22. CABOT HEAD PROVINCIAL PARK Boil Water 5/25/2024
23. Camp Kagama Water Quality Advisory 6/3/2024
24. Campbellford Boil Water 6/4/2020
25. CAMPBELLVILLE Old Diamond Boil Water 8/23/2024
26. CARLING Boil Water 11/11/2025
27. CAT LAKE FIRST NATION Boil Water 3/11/2024
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 of Georgina Island First Nation Boil Water 4/24/2017
34. Chippewas of Nawash First Nation Boil Water 1/21/2019
35. Chippewas of Thames First Nation Boil Water 12/14/2021
36. COBDEN (Logos Land Resort SDWS Campground) Boil Water 7/8/2024
37. COBOCONK Boil Water 3/8/2026
38. COBOCONK Boil Water 11/28/2025
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 F|irst Nation Boil Water 10/15/2019
46. Deer Lake First Nation Boil Water 10/21/2019
47. DRACON (GCCA Harmonie) Boil Water 5/17/2024
48. DUNDALK Drinking Water System Water Quality Advisory 1/7/2025
49. DURHAM (1) Water Quality Advisory 3/8/2024
50. Eabametoong First Nation Boil Water 8/1/2001
51. ELLIOT LAKE Boil Water 3/5/2026
52. ESPANOLA (Mountain Cove Lodge) Boil Water 8/14/2024
53. FENELON FALLS Boil Water 9/18/2025
54. Ferme Butte and Bine Boil Water 7/6/2023
55. FOLEYET (Shenango Lodge) Boil Water 8/20/2024
56. Fort Severn First Nation Boil Water 12/24/2025
57. FOXBORO (Belleville Pizzeria / Foxboro General Sto Boil Water 4/12/2025
58. FUSHIMI LAKE PROVINCIAL PARK Boil Water 9/8/2023
59. Gakijiwanong Anishinaabe First Nation Boil Water 1/5/2022
60. Georgian Bluffs Boil Water 8/26/2019
61. GEORGINA Boil Water 4/18/2024
62. Georgina Island Chippewa Boil Water 4/24/2017
63. GORDON LAKE Community Hall Boil Water 9/25/2024
64. GRAND FALLS in ALGOMA Boil Water 8/21/2025
65. GRAND VALLEY Flooding 3/31/2026
66. GRASSY NARROWS FIRST NATION Boil Water 8/9/2024
67. Green Wilderness Lodge Boil Water 8/17/2022
68. Gull Bay First Nation Boil Water 4/30/2009
69. HALI BURTON Boil Water 11/26/2025
70. HAMILTON Do Not Consume 4/1/2026
71. HANOVER (Victory Fellowship Church) Water Quality Advisory 7/3/2024
72. HARCOURT Boil Water 10/10/2025
73. HARCOURT Boil Water 8/4/2024
74. HARTINGTON (Lazy Acre Cottages) Boil Water 6/19/2021
75. HASTINGS Boil Water 8/8/2025
76. HAWK JUNCTION Boil Water 9/17/2025
77. HEARST (1) Boil Water 8/3/2024
78. HEYDEN Boil Water 10/10/2025
79. HILLIER Boil Water 11/6/2025
80. Hoard Station Boil Water 3/31/2023
81. HOLSTEIN (2) Water Quality Advisory 8/22/2024
82. HOPE BAY FOREST PROVINCIAL PARK Boil Water 5/25/2024
83. ICARUS LAKE Cyanobacteria Bloom 9/4/2025
84. IRA LAKE PROVINCIAL PARK Boil Water 5/25/2024
85. IRON BRIDGE (Melwel Lodge) Boil Water 8/8/2024
86. Johnston Hrb.-Pine Tree Pt. Prov Park Boil Water 5/25/2024
87. KASHECHEWAN Do Not Consume 1/29/2026
88. KASHECHEWAN Do Not Consume 2/1/2026
89. Kawartha Highland Provincial Park Boil Water 12/17/2020
90. Kee-Way-Win First Nation Boil Water 3/30/2026
91. KENOGAMING LAKE (Thunderstock Outfitters) Boil Water 5/22/2024
92. KENOGAMISIS LAKE Cyanobacteria Bloom 8/20/2025
93. Kicking Mule Ranch Boil Water 9/27/2023
94. KILLBEAR PROVINCIAL PARK Boil Water 5/9/2025
95. KITCHENER Flooding 4/1/2026
96. Kitchenuhmaykoosib Inninuwug First Nation Boil Water 9/12/2025
97. LAKE ASPEY Cyanobacteria Bloom 11/27/2025
98. LAKE NIPISSING Cyanobacteria Bloom 8/12/2025
99. LAKE ONTARIO Cyanobacteria Bloom 8/8/2025
100. LAKE SCUGOG Cyanobacteria Bloom 7/11/2025
101. LAKE ST. JOHN Cyanobacteria Bloom 8/12/2025
102. LAKE TIMISKAMING Cyanobacteria Bloom 7/9/2025
103. LEEs Creek (North Bay) Do Not Consume 2/22/2017
104. LIMER Boil Water 8/21/2025
105. LIONS HEAD PROV PARK Boil Water 5/25/2024
106. LONG BEACH Water System Boil Water 4/10/2006
107. Lost Lake Campground Boil Water 9/2/2022
108. MacLeod Provincial Park Boil Water 11/18/2020
109. MADOC Do Not Consume 12/30/2025
110. MAGNETAWAN Boil Water 9/18/2025
111. Maple Ridge Park Campground Boil Water 5/12/2023
112. MARK S. BURNHAM PROV PK Boil Water 5/25/2024
113. Marten Falls First Nation Boil Water 4/30/2009
114. MARTEN RIVER PROV PK Boil Water 8/16/2025
115. MASSEY Boil Water 4/25/2024
116. MAYNOOTH (Graphite Bible Camp) Do Not Consume 8/9/2024
117. MILFORD Boil Water 10/16/2025
118. MILFORD Boil Water 12/12/2025
119. MILTON (Humes Auction Farm) Do Not Consume 10/2/2024
120. MINDEN (2) Boil Water 9/29/2025
121. Misery Bay Prov. Park Boil Water 8/1/2023
122. Mishkeegogamang First Nation (2) Boil Water 3/27/2026
123. Mishkeegogamang First Nation (2) Boil Water 12/23/2025
124. Missinaibi Provincial Park Boil Water 8/13/2021
125. MISSISSAUGA Do Not Consume 4/1/2026
126. MOOSONEE Boil Water 3/22/2026
127. Munsee-Delaware First Nation Boil Water 2/24/2024
128. Muskrat Dam Lake Reserve Boil Water 10/24/2003
129. Neskantaga First Nation Boil Water 2/1/1995
130. Newcastle Golf and Country Club Boil Water 5/21/2021
131. Nibinamik First Nation Boil Water 2/5/2013
132. NIPIGON Boil Water 12/28/2025
133. NOELVILLE Boil Water 2/12/2026
134. NORTH BAY Spill 12/4/2024
135. North Caribou Lake Firast Nation Boil Water 3/3/2020
136. NORTH MIDDLESEX (2) Water Quality Advisory 8/23/2024
137. North Spirit Lake First Nation Boil Water 4/5/2019
138. North Spirit Lake Indian reserve Boil Water 4/5/2019
139. OAKVILLE Do Not Consume 9/11/2025
140. OLIVER PAIPOONGE Do Not Consume 3/9/2023
141. Oneida of The Thames First Nation Boil Water 9/26/2019
142. Palmer Rapids - Maplehaus Boil Water 6/13/2023
143. PELEE ISLAND (2) Boil Water 6/25/2024
144. PELEE ISLAND (2) Boil Water 8/28/2025
145. Pembroke - LJs Boil Water 6/10/2023
146. PETAWAWA (Pine Ridge Park & Resort) Boil Water 6/12/2024
147. Pikangikum First Nation Boil Water 2/8/2024
148. Poplar Hill First Nation Boil Water 12/27/2025
149. POTHOLES PROVINCIAL PARK Boil Water 5/25/2024
150. Rainy River First Nation Boil Water 2/6/2024
151. RAMARA Water Quality Advisory 4/1/2025
152. RAMORE Boil Water 2/27/2026
153. RAMSEY LAKE Cyanobacteria Bloom 7/11/2025
154. Rene Brunelle Provincial Park Boil Water 12/4/2020
155. Rideau Ferry Country Home Boil Water 6/12/2024
156. RIVER VALLEY Outdoor Rink Do Not Consume 2/19/2025
157. ROCK POINT PROV PK Do Not Consume 9/3/2025
158. ROCKY ISLET BAY Cyanobacteria Bloom 8/26/2025
159. ROSENEATH (Langs Family Resort & Marina) Boil Water 8/21/2024
160. RUSCOM RIVER Cyanobacteria Bloom 7/18/2025
161. Russell - Marvelville Community Centre Boil Water 8/15/2023
162. Sandy Lake First Nation Boil Water 10/10/2002
163. SAULT STE. MARIE Boil Water 3/20/2026
164. SEELEY’S BAY Boil Water 7/11/2023
165. SEVERN (Coldwater) Spill 4/1/2025
166. Shawanaga First Nation Boil Water 7/11/2024
167. Shelburne Boil Water 7/10/2023
168. Simcoe Water Quality Advisory 7/28/2017
169. Slate Falls First Nation Boil Water 6/23/2023
170. Smokey Head-White Bluff Prov Pk Boil Water 5/25/2024
171. SOUTH STORMONT TWP Do Not Consume 3/5/2026
172. SPRING BAY (Freds Camp) Boil Water 9/7/2024
173. ST JACOBS Flooding 3/31/2026
174. ST. JOSEPH ISLAND (Jocelyn Twp Community Hall) Boil Water 4/9/2025
175. STAR LAKE Cyanobacteria Bloom 7/2/2025
176. SUNDRIDGE (Zion United Church) Do Not Consume 10/31/2024
177. The Shoals Prov. Park Boil Water 5/25/2024
178. THOMASBURG Do Not Consume 12/30/2025
179. THORNE Boil Water 7/31/2025
180. THREE MILE LAKE Cyanobacteria Bloom 8/12/2025
181. Timberwolf Lodge Restaurant Boil Water 7/22/2022
182. TIMMINS Boil Water 3/15/2026
183. TWEED (2) Do Not Consume 9/24/2025
184. Twp of SELWYN (Condo Corp 949 Sharon Court) Water Quality Advisory 3/10/2025
185. UPPER ISLAND LAKE Cyanobacteria Bloom 9/17/2025
186. VICTORIA HARBOUR Municipal WS Boil Water 7/8/2024
187. VIRGINIATOWN Boil Water 2/20/2026
188. Wabauskang First Nation Boil Water 5/16/2025
189. WAINFLEET Boil Water 4/10/2006
190. WAKOMATA Boil Water 10/1/2025
191. WARREN Water System Boil Water 1/15/2024
192. WASI LAKE Cyanobacteria Bloom 8/12/2025
193. WEST MONTROSE Flooding 3/31/2026
194. What The Fries Boil Water 5/23/2023
195. White Lake Provincial Park Boil Water 5/18/2024
196. WHITESAND FIRS NATION Boil Water 6/17/2025
197. WHITESTONE LAKE Cyanobacteria Bloom 9/17/2025
198. WOLSELEY BAY Cyanobacteria Bloom 12/9/2025
199. WOODVILLE Boil Water 11/7/2025
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