I purchase in house roasted coffee beans here. They have several different roasts to suit your tastes , they will grind it to your specific needs. A great spot for a cup of excellent coffee. It is in the heart of downtown Sarnia. There is limited seating inside and outside.
Atmosphere: 5
Food: 4
Service: 5
Estella Hache
Wow, I love this coffee shop! Very farmy, cosy, and just amazing. The staff is not just amazing, it’s the quality and taste of everything on their menu. Wow, I truly recommend this coffee shop. It’s worth every penny, and the staff are so very kind. They custom-make your order with no problem, and they bring the drinks and food right to your table. Honestly, I really recommend this coffee shop. It tastes amazing!
Atmosphere: 5
Food: 5
Service: 5
Jung House Hair
Great coffee...good location when you are in downtown.
Service is good but a bit slow
Atmosphere: 5
Food: 5
Service: 4
Brad Kimbro
Black water Coffee Co. is a great place to come and hang out, grab a small bite or your favorite drink-Mine is black Americano extra shot, always black 😉
Atmosphere: 5
Food: 5
Service: 5
Emma
Love this little coffee shop! We come here once a month to get fresh beans for our espresso machine, they are always fresh and always high quality. Everyone is always nice and very helpful!
Atmosphere: 5
Food: 5
Service: 5
Peggy Murray
Blueberry iced tea and lemon poppyseed muffin just might be my new favourites!
Atmosphere: 5
Food: 5
Service: 5
Nigel Workman
Best breakfast sandwich I've ever had! Coffee great too
Atmosphere: 5
Food: 5
Service: 5
Melissa Bennett
Backwater Coffee Co. is hands down one of the best coffee spots I’ve ever visited. From the moment you walk in, the vibe is warm, welcoming, and cozy — the kind of place where you instantly feel at home. The staff are friendly, knowledgeable, and clearly passionate about what they do.
The coffee? Next level. Every cup is rich, smooth, and brewed to perfection — you can really taste the care that goes into every roast. I tried an iced skinny vanilla oat latte and a date square - they were incredible. Their pastries and snacks are so fresh and delicious — perfect for pairing with a good book or a work session.
If you’re in the area (or even if you’re not), Backwater Coffee Co. is worth the trip. It’s more than just a coffee shop — it’s a community hub, a creative space, and a caffeine lover’s dream. Can’t recommend it enough!
Atmosphere: 5
Food: 5
Service: 5
Janna Carson
Loved my experience and atmosphere here!! I'm from Michigan and was camping in Sombra. With the weather being all over the place, I had to tweak my plans which led me to needing to kill some time! That led me here. The staff member (maybe owner?) was friendly and helpful with his recommendations- I ordered the cardamom latte and leek and parm croissant and it was SO delicious, buttery, savory and flaky. The garage door being opened to the outside is always nice for fresh air and a view.
Atmosphere: 5
Food: 5
Service: 5
John G
Great coffee spot as we passed through Sarnia. Friendly service and delicious drinks!
Unique spot to enjoy a coffee or a treat right in the heart of downtown Sarnia!
John Willis
Brownstones Spotlight: Blackwater Coffee
Tucked into the heart of downtown Sarnia is a place that doesn't just serve coffee it defines it. Blackwater Coffee isn’t simply a café; it’s a benchmark of style, quality, and entrepreneurial spirit. Long before downtown’s resurgence, Dave the visionary behind Blackwater committed to something greater than just brewing beans. He built an atmosphere. A vibe. A standard.
With a relentless work ethic and an eye for design, Dave created a space that feels as good as the coffee tastes. Every cup at Blackwater tells a story of craftsmanship, consistency, and community. And if you've ever been, you know the truth: once you've had Blackwater, you find yourself craving that next cup before you've even left the block.
At Brownstones, we know what it takes to build something meaningful in this city. That’s why we’re proud to spotlight Blackwater Coffee a true local gem and a cornerstone of what makes Sarnia special. Here's to Dave, to his incredible team, and to many more years of caffeinated excellence.
Bruce Wilson
Great coffee brewed by an old friend! Another reason to bring me back to Sarnia!!
I purchase in house roasted coffee beans here. They have several different roasts to suit your tastes , they will grind it to your specific needs. A great spot for a cup of excellent coffee. It is in the heart of downtown Sarnia. There is limited seating inside and outside.
Atmosphere: 5
Food: 4
Service: 5
Wow, I love this coffee shop! Very farmy, cosy, and just amazing. The staff is not just amazing, it’s the quality and taste of everything on their menu. Wow, I truly recommend this coffee shop. It’s worth every penny, and the staff are so very kind. They custom-make your order with no problem, and they bring the drinks and food right to your table. Honestly, I really recommend this coffee shop. It tastes amazing!
Atmosphere: 5
Food: 5
Service: 5
Great coffee...good location when you are in downtown.
Service is good but a bit slow
Atmosphere: 5
Food: 5
Service: 4
Black water Coffee Co. is a great place to come and hang out, grab a small bite or your favorite drink-Mine is black Americano extra shot, always black 😉
Atmosphere: 5
Food: 5
Service: 5
Love this little coffee shop! We come here once a month to get fresh beans for our espresso machine, they are always fresh and always high quality. Everyone is always nice and very helpful!
Atmosphere: 5
Food: 5
Service: 5
Blueberry iced tea and lemon poppyseed muffin just might be my new favourites!
Atmosphere: 5
Food: 5
Service: 5
Best breakfast sandwich I've ever had! Coffee great too
Atmosphere: 5
Food: 5
Service: 5
Backwater Coffee Co. is hands down one of the best coffee spots I’ve ever visited. From the moment you walk in, the vibe is warm, welcoming, and cozy — the kind of place where you instantly feel at home. The staff are friendly, knowledgeable, and clearly passionate about what they do.
The coffee? Next level. Every cup is rich, smooth, and brewed to perfection — you can really taste the care that goes into every roast. I tried an iced skinny vanilla oat latte and a date square - they were incredible. Their pastries and snacks are so fresh and delicious — perfect for pairing with a good book or a work session.
If you’re in the area (or even if you’re not), Backwater Coffee Co. is worth the trip. It’s more than just a coffee shop — it’s a community hub, a creative space, and a caffeine lover’s dream. Can’t recommend it enough!
Atmosphere: 5
Food: 5
Service: 5
Loved my experience and atmosphere here!! I'm from Michigan and was camping in Sombra. With the weather being all over the place, I had to tweak my plans which led me to needing to kill some time! That led me here. The staff member (maybe owner?) was friendly and helpful with his recommendations- I ordered the cardamom latte and leek and parm croissant and it was SO delicious, buttery, savory and flaky. The garage door being opened to the outside is always nice for fresh air and a view.
Atmosphere: 5
Food: 5
Service: 5
Great coffee spot as we passed through Sarnia. Friendly service and delicious drinks!
Atmosphere: 5
Food: 5
Service: 5
Restaurantji Recommends
Awesome cafe and variety of flavour options
Atmosphere: 5
Food: 5
Service: 5
Unique spot to enjoy a coffee or a treat right in the heart of downtown Sarnia!
Brownstones Spotlight: Blackwater Coffee Tucked into the heart of downtown Sarnia is a place that doesn't just serve coffee it defines it. Blackwater Coffee isn’t simply a café; it’s a benchmark of style, quality, and entrepreneurial spirit. Long before downtown’s resurgence, Dave the visionary behind Blackwater committed to something greater than just brewing beans. He built an atmosphere. A vibe. A standard. With a relentless work ethic and an eye for design, Dave created a space that feels as good as the coffee tastes. Every cup at Blackwater tells a story of craftsmanship, consistency, and community. And if you've ever been, you know the truth: once you've had Blackwater, you find yourself craving that next cup before you've even left the block. At Brownstones, we know what it takes to build something meaningful in this city. That’s why we’re proud to spotlight Blackwater Coffee a true local gem and a cornerstone of what makes Sarnia special. Here's to Dave, to his incredible team, and to many more years of caffeinated excellence.
Great coffee brewed by an old friend! Another reason to bring me back to Sarnia!!
The flat white was delicious.
Atmosphere: 5
Food: 5
Service: 5
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