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May 23, 2026

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Advisories for Ontario

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MunicipalityTypeSince
1. ALBAN Boil Water 5/22/2026
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 Boil Water 9/12/2025
11. BASS LAKE Cyanobacteria Bloom 7/18/2025
12. BATCHAWANA BAY Boil Water 5/20/2026
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 (2) Boil Water 2/26/2020
17. BEAVERTON Do Not Consume 4/1/2026
18. BELWOOD LAKE Cyanobacteria Bloom 7/23/2025
19. BLACK CREEK PROVINCIAL PARK Boil Water 5/25/2024
20. BLACKSTOCK (Souls Path Retreats Lodge Winter Well) Boil Water 3/25/2025
21. BOURGET Boil Water 8/20/2025
22. BRANTFORD (Lifebridges) Boil Water 6/26/2024
23. BROOKLIN Boil Water 5/11/2026
24. BRUCE MINES Boil Water 5/8/2026
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. CARLING Boil Water 11/11/2025
30. CASSELMAN - East Haven Sun Club Boil Water 5/8/2026
31. CAT LAKE FIRST NATION Boil Water 3/11/2024
32. CENTERVILLE (1) Boil Water 1/2/2025
33. CHAPLEAU (1) Boil Water 8/10/2023
34. CHAPLEAU (Pellows Best Canadian Fishing) Boil Water 6/2/2025
35. CHAPLEAU-NEMEGOSENDA RIVER PROV PK Boil Water 5/25/2024
36. CHATHAM (Glasshouse Nursery & Garden Centre) Boil Water 12/12/2024
37. Chippewas of Georgina Island First Nation Boil Water 4/24/2017
38. Chippewas of Nawash First Nation Boil Water 1/21/2019
39. Chippewas of Thames First Nation Boil Water 12/14/2021
40. COBDEN (Logos Land Resort SDWS Campground) Boil Water 7/8/2024
41. COBOCONK Boil Water 3/8/2026
42. COBOCONK Boil Water 11/28/2025
43. COCHRANE (North Adventure Inn) Do Not Consume 5/22/2025
44. COLLINGWOOD Spill 4/2/2025
45. Columbus Golf & Country Club Boil Water 5/21/2021
46. COMMANDA LAKE Cyanobacteria Bloom 6/26/2025
47. CONESTOGO LAKE Cyanobacteria Bloom 8/12/2025
48. CONN Boil Water 5/19/2026
49. CORNWALL Boil Water 7/22/2025
50. Deer Lake F|irst Nation Boil Water 10/15/2019
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 WILLIAM FIRST NATION Boil Water 5/15/2026
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 8/4/2024
79. HARTINGTON (Lazy Acre Cottages) Boil Water 6/19/2021
80. HASTINGS Boil Water 8/8/2025
81. HAWK JUNCTION Boil Water 9/17/2025
82. HEARST (1) Boil Water 8/3/2024
83. HEYDEN Boil Water 5/15/2026
84. HILLIER Boil Water 11/6/2025
85. Hoard Station Boil Water 3/31/2023
86. HOLSTEIN (2) Water Quality Advisory 8/22/2024
87. HOPE BAY FOREST PROVINCIAL PARK Boil Water 5/25/2024
88. ICARUS LAKE Cyanobacteria Bloom 9/4/2025
89. IRA LAKE PROVINCIAL PARK Boil Water 5/25/2024
90. IRON BRIDGE Boil Water 5/8/2026
91. IRON BRIDGE (Melwel Lodge) Boil Water 8/8/2024
92. IROQUOIS Boil Water 5/15/2026
93. Johnston Hrb.-Pine Tree Pt. Prov Park Boil Water 5/25/2024
94. KASHECHEWAN Do Not Consume 2/1/2026
95. KASHECHEWAN Do Not Consume 1/29/2026
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 GROVE VILLAGE Boil Water 5/19/2026
121. Maple Ridge Park Campground Boil Water 5/12/2023
122. MARK S. BURNHAM PROV PK Boil Water 5/25/2024
123. Marten Falls First Nation Boil Water 4/30/2009
124. MARTEN RIVER PROV PK Boil Water 8/16/2025
125. MASSEY Boil Water 4/25/2024
126. MAYNOOTH (Graphite Bible Camp) Do Not Consume 8/9/2024
127. MILFORD Boil Water 12/12/2025
128. MILFORD Boil Water 10/16/2025
129. MILTON (Humes Auction Farm) Do Not Consume 10/2/2024
130. MINDEN (3) Boil Water 4/30/2026
131. MINDEN HILLS -SOUTH LAKE Do Not Consume 4/21/2026
132. Misery Bay Prov. Park Boil Water 8/1/2023
133. Mishkeegogamang First Nation Boil Water 3/27/2026
134. Mishkeegogamang First Nation (2) Boil Water 12/23/2025
135. Missinaibi Provincial Park Boil Water 8/13/2021
136. MISSISSAUGA Do Not Consume 4/1/2026
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 Flooding 4/29/2026
145. NORTH BAY Spill 12/4/2024
146. NORTH BAY Flooding 4/21/2026
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. NORTHWEST ANGLE No. 33 FIRST NATION Boil Water 5/14/2026
152. OAKVILLE Do Not Consume 9/11/2025
153. OLIVER PAIPOONGE Do Not Consume 3/9/2023
154. Oneida of The Thames First Nation Boil Water 9/26/2019
155. ORLEANS -Fallingbrook elementary School Do Not Consume 5/8/2026
156. Palmer Rapids - Maplehaus Boil Water 6/13/2023
157. PELEE ISLAND Boil Water 5/12/2026
158. PELEE ISLAND Boil Water 6/25/2024
159. PELEE ISLAND (2) Boil Water 8/28/2025
160. Pembroke - LJs Boil Water 6/10/2023
161. PETAWAWA (Pine Ridge Park & Resort) Boil Water 6/12/2024
162. Pikangikum First Nation Boil Water 2/8/2024
163. Poplar Hill First Nation Boil Water 12/27/2025
164. POTHOLES PROVINCIAL PARK Boil Water 5/25/2024
165. PUKASKWA NATIONAL PARK Boil Water 5/15/2026
166. RAMARA Water Quality Advisory 4/1/2025
167. RAMORE Boil Water 2/27/2026
168. RAMSEY LAKE Cyanobacteria Bloom 7/11/2025
169. Rene Brunelle Provincial Park Boil Water 12/4/2020
170. Rideau Ferry Country Home Boil Water 6/12/2024
171. RIVER VALLEY Outdoor Rink Do Not Consume 2/19/2025
172. ROCK POINT PROV PK Boil Water 5/13/2026
173. ROCKY ISLET BAY Cyanobacteria Bloom 8/26/2025
174. ROSENEATH (Langs Family Resort & Marina) Boil Water 8/21/2024
175. RUSCOM RIVER Cyanobacteria Bloom 7/18/2025
176. Russell - Marvelville Community Centre Boil Water 8/15/2023
177. SAGAMOK ANISHNAWBEK FIRST NATION Boil Water 4/19/2026
178. Sandy Lake First Nation Boil Water 10/10/2002
179. SAULT STE. MARIE Boil Water 3/20/2026
180. SCHREIBER Boil Water 5/16/2026
181. SEELEY’S BAY Boil Water 7/11/2023
182. Seine River First Nation Boil Water 2/10/2025
183. SEVERN (Coldwater) Spill 4/1/2025
184. Shawanaga First Nation Boil Water 7/11/2024
185. Shelburne Boil Water 7/10/2023
186. Simcoe Water Quality Advisory 7/28/2017
187. Slate Falls First Nation Boil Water 6/23/2023
188. Smokey Head-White Bluff Prov Pk Boil Water 5/25/2024
189. SOUTH STORMONT TWP Do Not Consume 3/5/2026
190. SPRING BAY (Freds Camp) Boil Water 9/7/2024
191. STAR LAKE Cyanobacteria Bloom 7/2/2025
192. SUNDRIDGE (Zion United Church) Do Not Consume 10/31/2024
193. The Shoals Prov. Park Boil Water 5/25/2024
194. THOMASBURG Do Not Consume 12/30/2025
195. THORNE Boil Water 7/31/2025
196. THREE MILE LAKE Cyanobacteria Bloom 8/12/2025
197. Timberwolf Lodge Restaurant Boil Water 7/22/2022
198. TWEED (2) Do Not Consume 9/24/2025
199. Twp of SELWYN (Condo Corp 949 Sharon Court) Water Quality Advisory 3/10/2025
200. UPPER ISLAND LAKE Cyanobacteria Bloom 9/17/2025
201. VICTORIA HARBOUR Municipal WS Boil Water 7/8/2024
202. VIRGINIATOWN Boil Water 2/20/2026
203. Wabauskang First Nation Boil Water 5/16/2025
204. WABIGOON LAKE Ojibway Nation Boil Water 5/4/2026
205. WABSEEMOONG FIRST NATION Boil Water 4/20/2026
206. WAINFLEET Boil Water 4/10/2006
207. WAKOMATA Boil Water 10/1/2025
208. WARREN Water System Boil Water 1/15/2024
209. WASI LAKE Cyanobacteria Bloom 8/12/2025
210. Wawakapewin First Nation Boil Water 7/21/2023
211. WEBEQUIE FIRST NATION Boil Water 5/17/2026
212. WEST NIPISSING Flooding 4/19/2026
213. What The Fries Boil Water 5/23/2023
214. White Lake Provincial Park Boil Water 5/18/2024
215. WHITESAND FIRST NATION Boil Water 5/20/2026
216. WHITESTONE LAKE Cyanobacteria Bloom 9/17/2025
217. WOLSELEY BAY Cyanobacteria Bloom 12/9/2025
218. WOODVILLE Boil Water 5/14/2026
219. WOODVILLE Boil Water 11/7/2025
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