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October 10, 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.
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.
BRIGHTON
Boil Water
7/14/2020
23.
CABOT HEAD PROVINCIAL PARK
Boil Water
5/25/2024
24.
Camp Kagama
Water Quality Advisory
6/3/2024
25.
Campbellford
Boil Water
6/4/2020
26.
CAMPBELLVILLE Old Diamond
Boil Water
8/23/2024
27.
CENTERVILLE (1)
Boil Water
1/2/2025
28.
CHAPLEAU (1)
Boil Water
8/10/2023
29.
CHAPLEAU (Pellows Best Canadian Fishing)
Boil Water
6/2/2025
30.
CHAPLEAU-NEMEGOSENDA RIVER PROV PK
Boil Water
5/25/2024
31.
CHATHAM (Glasshouse Nursery & Garden Centre)
Boil Water
12/12/2024
32.
CHIPPEWAS FN
Do Not Consume
7/21/2025
33.
Chippewas of Nawash-Cape Croker First Nation
Boil Water
1/21/2019
34.
Chippewas of the Thames
Boil Water
12/14/2022
35.
Chippewas of the Thames
Boil Water
7/21/2025
36.
COBDEN (Logos Land Resort SDWS Campground)
Boil Water
7/8/2024
37.
COCHRANE (North Adventure Inn)
Do Not Consume
5/22/2025
38.
COLLINGWOOD
Spill
4/2/2025
39.
Columbus Golf & Country Club
Boil Water
5/21/2021
40.
COMMANDA LAKE
Cyanobacteria Bloom
6/26/2025
41.
CONESTOGO LAKE
Cyanobacteria Bloom
8/12/2025
42.
CONSECON
Boil Water
9/16/2025
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.
FALCONBRIDGE
Spill
9/24/2025
50.
FENELON FALLS
Boil Water
9/18/2025
51.
Ferme Butte and Bine
Boil Water
7/6/2023
52.
FOLEYET (Shenango Lodge)
Boil Water
8/20/2024
53.
Fort Severn First Nation
Boil Water
12/14/2024
54.
FOXBORO (Belleville Pizzeria / Foxboro General Sto
Boil Water
4/12/2025
55.
FUSHIMI LAKE PROVINCIAL PARK
Boil Water
9/8/2023
56.
GEORGETOWN
Boil Water
9/27/2025
57.
Georgian Bluffs
Boil Water
8/26/2019
58.
GEORGINA
Boil Water
4/18/2024
59.
Georgina Island Chippewa
Boil Water
4/24/2017
60.
GORDON LAKE Community Hall
Boil Water
9/25/2024
61.
GRAND FALLS in ALGOMA
Boil Water
8/21/2025
62.
Grassy Narrows First Nation
Boil Water
8/29/2024
63.
Green Wilderness Lodge
Boil Water
8/17/2022
64.
Gull Bay First Nation
Boil Water
4/30/2009
65.
HAMMOND
Boil Water
10/2/2025
66.
HANOVER
Boil Water
8/11/2025
67.
HANOVER (Victory Fellowship Church)
Water Quality Advisory
7/3/2024
68.
HARCOURT
Boil Water
8/4/2024
69.
HARCOURT
Boil Water
8/19/2025
70.
HARTINGTON (Lazy Acre Cottages)
Boil Water
6/19/2021
71.
HARWOOD
Boil Water
10/1/2025
72.
HASTINGS
Boil Water
8/8/2025
73.
HAWK JUNCTION
Boil Water
9/17/2025
74.
HEARST (1)
Boil Water
8/3/2024
75.
Hoard Station
Boil Water
3/31/2023
76.
HOLSTEIN (2)
Water Quality Advisory
8/22/2024
77.
HOPE BAY FOREST PROVINCIAL PARK
Boil Water
5/25/2024
78.
ICARUS LAKE
Cyanobacteria Bloom
9/4/2025
79.
IRA LAKE PROVINCIAL PARK
Boil Water
5/25/2024
80.
IRON BRIDGE (Melwel Lodge)
Boil Water
8/8/2024
81.
Johnston Hrb.-Pine Tree Pt. Prov Park
Boil Water
5/25/2024
82.
Kashechewan
Boil Water
12/3/2024
83.
Kawartha Highland Provincial Park
Boil Water
12/17/2020
84.
KAWARTHA LAKES
Boil Water
7/8/2025
85.
Kee-Way-Win First Nation
Boil Water
6/9/2025
86.
KENOGAMING LAKE (Thunderstock Outfitters)
Boil Water
5/22/2024
87.
KENOGAMISIS LAKE
Cyanobacteria Bloom
8/20/2025
88.
Kicking Mule Ranch
Boil Water
9/27/2023
89.
KILLBEAR PROVINCIAL PARK
Boil Water
5/9/2025
90.
LAKE NIPISSING
Cyanobacteria Bloom
8/12/2025
91.
LAKE ONTARIO
Cyanobacteria Bloom
8/8/2025
92.
LAKE SCUGOG
Cyanobacteria Bloom
7/11/2025
93.
LAKE ST. JOHN
Cyanobacteria Bloom
8/12/2025
94.
LAKE TIMISKAMING
Cyanobacteria Bloom
7/9/2025
95.
LANCASTER
Boil Water
6/30/2025
96.
LEEs Creek (North Bay)
Do Not Consume
2/22/2017
97.
LIMER
Boil Water
8/21/2025
98.
LIONS HEAD PROV PARK
Boil Water
5/25/2024
99.
LITTLE BRITAIN
Boil Water
10/4/2025
100.
LONG BEACH Water System
Boil Water
4/10/2006
101.
Lost Lake Campground
Boil Water
9/2/2022
102.
MacLeod Provincial Park
Boil Water
11/18/2020
103.
MAGNETAWAN
Boil Water
9/18/2025
104.
Maple Ridge Park Campground
Boil Water
5/12/2023
105.
MARK S. BURNHAM PROV PK
Boil Water
5/25/2024
106.
MARMORA
Boil Water
9/9/2025
107.
Marten Falls First Nation
Boil Water
7/18/2005
108.
MARTEN RIVER PROV PK
Boil Water
8/16/2025
109.
MASSEY
Boil Water
4/25/2024
110.
MAYNOOTH (Graphite Bible Camp)
Do Not Consume
8/9/2024
111.
MILTON (Humes Auction Farm)
Do Not Consume
10/2/2024
112.
MINDEN (2)
Boil Water
9/29/2025
113.
Misery Bay Prov. Park
Boil Water
8/1/2023
114.
Mishkeegogamang First Nation (3)
Boil Water
5/8/2025
115.
Missinaibi Provincial Park
Boil Water
8/13/2021
116.
Mohawks of Bay of Quinte
Boil Water
9/2/2024
117.
MOOSE FACTORY
Boil Water
9/30/2025
118.
Muskrat Dam Lake Reserve
Boil Water
10/24/2003
119.
Neskantaga First Nation
Boil Water
2/1/1995
120.
Newcastle Golf and Country Club
Boil Water
5/21/2021
121.
Nibinamik First Nation
Boil Water
2/5/2013
122.
NORLAND
Boil Water
10/1/2025
123.
NORTH BAY
Spill
12/4/2024
124.
NORTH MIDDLESEX (2)
Water Quality Advisory
8/23/2024
125.
North Spirit Lake First Nation
Boil Water
4/5/2019
126.
North Spirit Lake Indian reserve
Boil Water
8/20/2024
127.
OAKVILLE
Do Not Consume
9/11/2025
128.
OLIVER PAIPOONGE
Do Not Consume
3/9/2023
129.
Oneida of The Thames First Nation
Boil Water
9/1/2019
130.
ORILLIA
Spill
4/2/2025
131.
Palmer Rapids - Maplehaus
Boil Water
6/13/2023
132.
PELEE ISLAND (2)
Boil Water
8/28/2025
133.
PELEE ISLAND (2)
Boil Water
6/25/2024
134.
Pembroke - LJs
Boil Water
6/10/2023
135.
PETAWAWA (Pine Ridge Park & Resort)
Boil Water
6/12/2024
136.
PHILLIP EDWARD ISLAND
Boil Water
9/11/2025
137.
POTHOLES PROVINCIAL PARK
Boil Water
5/25/2024
138.
RAMARA
Water Quality Advisory
4/1/2025
139.
RAMSEY LAKE
Cyanobacteria Bloom
7/11/2025
140.
Rene Brunelle Provincial Park
Boil Water
12/4/2020
141.
Rideau Ferry Country Home
Boil Water
6/12/2024
142.
RIVER VALLEY Outdoor Rink
Do Not Consume
2/19/2025
143.
ROCK POINT PROV PK
Do Not Consume
9/3/2025
144.
ROCKY ISLET BAY
Cyanobacteria Bloom
8/26/2025
145.
ROSENEATH (Langs Family Resort & Marina)
Boil Water
8/21/2024
146.
RUSCOM RIVER
Cyanobacteria Bloom
7/18/2025
147.
Russell - Marvelville Community Centre
Boil Water
8/15/2023
148.
Sandy Lake First Nation
Boil Water
10/10/2002
149.
SAULT SAINTE MARIE
Boil Water
9/12/2025
150.
SAULT STE. MARIE (2)
Boil Water
5/24/2025
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. JOSEPH ISLAND (Jocelyn Twp Community Hall)
Boil Water
4/9/2025
161.
STAR LAKE
Cyanobacteria Bloom
7/2/2025
162.
SUNDRIDGE (Zion United Church)
Do Not Consume
10/31/2024
163.
The Shoals Prov. Park
Boil Water
5/25/2024
164.
THORNE
Boil Water
7/31/2025
165.
THREE MILE LAKE
Cyanobacteria Bloom
8/12/2025
166.
Timberwolf Lodge Restaurant
Boil Water
7/22/2022
167.
TWEED (2)
Do Not Consume
9/24/2025
168.
Twp of SELWYN (Condo Corp 949 Sharon Court)
Water Quality Advisory
3/10/2025
169.
UPPER ISLAND LAKE
Cyanobacteria Bloom
9/17/2025
170.
VICTORIA HARBOUR Municipal WS
Boil Water
7/8/2024
171.
W. Leitch Organics
Boil Water
5/26/2023
172.
Wabauskang First Nation
Boil Water
5/16/2025
173.
WAINFLEET
Boil Water
4/10/2006
174.
WAKOMATA
Boil Water
10/1/2025
175.
WARREN Water System
Boil Water
1/15/2024
176.
WASI LAKE
Cyanobacteria Bloom
8/12/2025
177.
What The Fries
Boil Water
5/23/2023
178.
White Lake Provincial Park
Boil Water
5/18/2024
179.
Whitesand First Nation
Boil Water
6/17/2025
180.
WHITESTONE LAKE
Cyanobacteria Bloom
9/17/2025
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