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