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October 23, 2025
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| ADVISORY INFO
WT INTERNATIONAL
Advisories for Ontario
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Select municipality for details:
Municipality
Type
Since
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 Lodge
Water Quality Advisory
6/25/2024
10.
BASS LAKE
Cyanobacteria Bloom
7/18/2025
11.
BASS LAKE
Boil Water
9/12/2025
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.
BELLEVILLE
Boil Water
10/16/2025
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.
BOBCAYGEON
Boil Water
10/19/2025
22.
BOURGET
Boil Water
8/20/2025
23.
BRANTFORD (Lifebridges)
Boil Water
6/26/2024
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.
CAMPBELLFORD
Boil Water
10/19/2025
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
12/14/2022
37.
Chippewas of the Thames
Boil Water
7/21/2025
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.
ELLIOT LAKE
Boil Water
10/22/2025
50.
ESPANOLA (Mountain Cove Lodge)
Boil Water
8/14/2024
51.
FALCONBRIDGE
Spill
9/24/2025
52.
FENELON FALLS
Boil Water
9/18/2025
53.
Ferme Butte and Bine
Boil Water
7/6/2023
54.
FOLEYET (Shenango Lodge)
Boil Water
8/20/2024
55.
Fort Severn First Nation
Boil Water
12/14/2024
56.
FOXBORO (Belleville Pizzeria / Foxboro General Sto
Boil Water
4/12/2025
57.
FUSHIMI LAKE PROVINCIAL PARK
Boil Water
9/8/2023
58.
Georgian Bluffs
Boil Water
8/26/2019
59.
GEORGINA
Boil Water
4/18/2024
60.
Georgina Island Chippewa
Boil Water
4/24/2017
61.
GORDON LAKE Community Hall
Boil Water
9/25/2024
62.
GRAND FALLS in ALGOMA
Boil Water
8/21/2025
63.
Grassy Narrows First Nation
Boil Water
8/29/2024
64.
Green Wilderness Lodge
Boil Water
8/17/2022
65.
Gull Bay First Nation
Boil Water
4/30/2009
66.
HALIBURTON
Boil Water
10/19/2025
67.
HAMMOND
Boil Water
10/2/2025
68.
HANOVER
Boil Water
8/11/2025
69.
HANOVER (Victory Fellowship Church)
Water Quality Advisory
7/3/2024
70.
HARCOURT
Boil Water
10/10/2025
71.
HARCOURT
Boil Water
8/4/2024
72.
HARTINGTON (Lazy Acre Cottages)
Boil Water
6/19/2021
73.
HASTINGS
Boil Water
8/8/2025
74.
HAWK JUNCTION
Boil Water
9/17/2025
75.
HEARST (1)
Boil Water
8/3/2024
76.
HEYDEN
Boil Water
10/10/2025
77.
Hoard Station
Boil Water
3/31/2023
78.
HOLSTEIN (2)
Water Quality Advisory
8/22/2024
79.
HOPE BAY FOREST PROVINCIAL PARK
Boil Water
5/25/2024
80.
ICARUS LAKE
Cyanobacteria Bloom
9/4/2025
81.
IRA LAKE PROVINCIAL PARK
Boil Water
5/25/2024
82.
IRON BRIDGE (Melwel Lodge)
Boil Water
8/8/2024
83.
Johnston Hrb.-Pine Tree Pt. Prov Park
Boil Water
5/25/2024
84.
Kashechewan
Boil Water
12/3/2024
85.
Kawartha Highland Provincial Park
Boil Water
12/17/2020
86.
KAWARTHA LAKES
Boil Water
7/8/2025
87.
Kee-Way-Win First Nation
Boil Water
6/9/2025
88.
KENOGAMING LAKE (Thunderstock Outfitters)
Boil Water
5/22/2024
89.
KENOGAMISIS LAKE
Cyanobacteria Bloom
8/20/2025
90.
Kicking Mule Ranch
Boil Water
9/27/2023
91.
KILLBEAR PROVINCIAL PARK
Boil Water
5/9/2025
92.
LAKE NIPISSING
Cyanobacteria Bloom
8/12/2025
93.
LAKE ONTARIO
Cyanobacteria Bloom
8/8/2025
94.
LAKE SCUGOG
Cyanobacteria Bloom
7/11/2025
95.
LAKE ST. JOHN
Cyanobacteria Bloom
8/12/2025
96.
LAKE TIMISKAMING
Cyanobacteria Bloom
7/9/2025
97.
LANCASTER
Boil Water
6/30/2025
98.
LEEs Creek (North Bay)
Do Not Consume
2/22/2017
99.
LIMER
Boil Water
8/21/2025
100.
LIONS HEAD PROV PARK
Boil Water
5/25/2024
101.
LITTLE BRITAIN
Boil Water
10/4/2025
102.
LONG BEACH Water System
Boil Water
4/10/2006
103.
Lost Lake Campground
Boil Water
9/2/2022
104.
MacLeod Provincial Park
Boil Water
11/18/2020
105.
MAGNETAWAN
Boil Water
9/18/2025
106.
Maple Ridge Park Campground
Boil Water
5/12/2023
107.
MARK S. BURNHAM PROV PK
Boil Water
5/25/2024
108.
MARMORA
Boil Water
9/9/2025
109.
Marten Falls First Nation
Boil Water
7/18/2005
110.
MARTEN RIVER PROV PK
Boil Water
8/16/2025
111.
MASSEY
Boil Water
4/25/2024
112.
MAYNOOTH (Graphite Bible Camp)
Do Not Consume
8/9/2024
113.
MILFORD
Boil Water
10/16/2025
114.
MILTON (Humes Auction Farm)
Do Not Consume
10/2/2024
115.
MINDEN (2)
Boil Water
9/29/2025
116.
Misery Bay Prov. Park
Boil Water
8/1/2023
117.
Mishkeegogamang First Nation (3)
Boil Water
5/8/2025
118.
Missinaibi Provincial Park
Boil Water
8/13/2021
119.
Mohawks of Bay of Quinte
Boil Water
9/2/2024
120.
Muskrat Dam Lake Reserve
Boil Water
10/24/2003
121.
Neskantaga First Nation
Boil Water
2/1/1995
122.
Newcastle Golf and Country Club
Boil Water
5/21/2021
123.
Nibinamik First Nation
Boil Water
2/5/2013
124.
NORTH BAY
Spill
12/4/2024
125.
NORTH MIDDLESEX (2)
Water Quality Advisory
8/23/2024
126.
North Spirit Lake First Nation
Boil Water
4/5/2019
127.
North Spirit Lake Indian reserve
Boil Water
8/20/2024
128.
OAKVILLE
Do Not Consume
9/11/2025
129.
OAKWOOD
Boil Water
10/19/2025
130.
OLIVER PAIPOONGE
Do Not Consume
3/9/2023
131.
Oneida of The Thames First Nation
Boil Water
9/1/2019
132.
ORILLIA
Spill
4/2/2025
133.
Palmer Rapids - Maplehaus
Boil Water
6/13/2023
134.
PELEE ISLAND (2)
Boil Water
8/28/2025
135.
PELEE ISLAND (2)
Boil Water
6/25/2024
136.
Pembroke - LJs
Boil Water
6/10/2023
137.
PETAWAWA (Pine Ridge Park & Resort)
Boil Water
6/12/2024
138.
PHILLIP EDWARD ISLAND
Boil Water
9/11/2025
139.
POTHOLES PROVINCIAL PARK
Boil Water
5/25/2024
140.
RAMARA
Water Quality Advisory
4/1/2025
141.
RAMSEY LAKE
Cyanobacteria Bloom
7/11/2025
142.
Rene Brunelle Provincial Park
Boil Water
12/4/2020
143.
Rideau Ferry Country Home
Boil Water
6/12/2024
144.
RIVER VALLEY Outdoor Rink
Do Not Consume
2/19/2025
145.
ROCK POINT PROV PK
Do Not Consume
9/3/2025
146.
ROCKY ISLET BAY
Cyanobacteria Bloom
8/26/2025
147.
ROSENEATH (Langs Family Resort & Marina)
Boil Water
8/21/2024
148.
RUSCOM RIVER
Cyanobacteria Bloom
7/18/2025
149.
Russell - Marvelville Community Centre
Boil Water
8/15/2023
150.
Sandy Lake First Nation
Boil Water
10/10/2002
151.
SEELEY’S BAY
Boil Water
7/11/2023
152.
Seine River First Nation
Boil Water
2/10/2025
153.
SEVERN (Coldwater)
Spill
4/1/2025
154.
Shelburne
Boil Water
7/10/2023
155.
Simcoe
Water Quality Advisory
7/28/2017
156.
Slate Falls First Nation
Boil Water
6/23/2023
157.
Slate Falls First Nation
Boil Water
11/6/2024
158.
Smokey Head-White Bluff Prov Pk
Boil Water
5/25/2024
159.
SPRING BAY (Freds Camp)
Boil Water
9/7/2024
160.
ST. GEORGE
Boil Water
10/7/2025
161.
ST. JOSEPH ISLAND (Jocelyn Twp Community Hall)
Boil Water
4/9/2025
162.
STAR LAKE
Cyanobacteria Bloom
7/2/2025
163.
SUNDRIDGE (Zion United Church)
Do Not Consume
10/31/2024
164.
The Shoals Prov. Park
Boil Water
5/25/2024
165.
THORNE
Boil Water
7/31/2025
166.
THREE MILE LAKE
Cyanobacteria Bloom
8/12/2025
167.
Timberwolf Lodge Restaurant
Boil Water
7/22/2022
168.
TWEED (2)
Do Not Consume
9/24/2025
169.
Twp of SELWYN (Condo Corp 949 Sharon Court)
Water Quality Advisory
3/10/2025
170.
UPPER ISLAND LAKE
Cyanobacteria Bloom
9/17/2025
171.
VICTORIA HARBOUR Municipal WS
Boil Water
7/8/2024
172.
W. Leitch Organics
Boil Water
5/26/2023
173.
Wabauskang First Nation
Boil Water
5/16/2025
174.
WAINFLEET
Boil Water
4/10/2006
175.
WAKOMATA
Boil Water
10/1/2025
176.
WARREN Water System
Boil Water
1/15/2024
177.
WASI LAKE
Cyanobacteria Bloom
8/12/2025
178.
What The Fries
Boil Water
5/23/2023
179.
White Lake Provincial Park
Boil Water
5/18/2024
180.
Whitesand First Nation
Boil Water
6/17/2025
181.
WHITESTONE LAKE
Cyanobacteria Bloom
9/17/2025
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