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Customer reviews for Member's Mark Plus+ Alkaline Bottled Water 1L., 18 pk. for
Member's Mark Plus+ Alkaline Bottled Water 1L., 18 pk.
4.8 out of 5 stars
stars7,648 ratings1,463 reviews
  1. 5 stars90% (6,895)
  2. 4 stars7% (505)
  3. 3 stars2% (123)
  4. 2 stars0% (37)
  5. 1 star1% (88)

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Showing 1-10 of 1,463 reviews
Aug 29, 2025
Mikey
5 out of 5 stars review

Verified Purchase

Definity Alkaline

I tried this when I couldn't handle anything acidic and even regular bottled water didn't help. I was surprised when I was feeling sick this water stayed in my system.

Helpful?61JQWEUZK2V713586574003
Aug 4, 2025
Chitown
5 out of 5 stars review

Verified Purchase

Alkaline water by members Mart at Sam's Club

Love this water! It tastes great and I feel super hydrated! Best waster ever! I was that person that hated water. It was hard for me to drink a glass. I now drink at least 2 bottles a day. The water help me not to crave soda also. Give it a try❤️

Helpful?61JQWEUZK2V713586574003
May 7, 2026
Ellie M
5 out of 5 stars review

Verified Purchase

Lab and selective palette approved!

This is the best price around for electrolyte-flavored water! I drink it to help keep my electrolyte levels up, I can't drink most of the options on the market due to taste sensitivity. Since I started drinking this at home when possible, my labs have gotten so much better!

Helpful?61JQWEUZK2V713586574003
May 8, 2026
Kent
5 out of 5 stars review

Verified Purchase

Alkaline Water on the go

Been. Drinking Alkaline water for 2 or 3 years now. Both price and quality seem very good. My wife and I were getting upset stomach's with any regular drinking water, but never with 9.5. No more indigestion with us.

Helpful?61JQWEUZK2V713586574003
Feb 11, 2026
Anne
5 out of 5 stars review

Verified Purchase

Husband loves it

My husband prefers alkaline water so I bought this for him to try. He told me it's the BEST one he's tried, loves the taste and because of the large bottle size, he finds himself drinking more water. It's also really very well priced compared to other brands.

Helpful?61JQWEUZK2V713586574003
Feb 7, 2026
CSP2
5 out of 5 stars review

Verified Purchase

Alkaline Water - Member's Mark

Sam's Club Alkaline (Ionized Hydration) Water is great quality for the price--compared to other waters. The price has remained low enough to be a very good value. It usually appears to be the only label of alkaline waters sold at Sam's Club that sells out first.

Helpful?61JQWEUZK2V713586574003
Apr 1, 2026
Chris J
5 out of 5 stars review

Verified Purchase

Good product and value

Not only has the water made some noticeable benefits with a health condition of mine, but it's also a great value compared to national name brands. I will keep buying this.

Helpful?61JQWEUZK2V713586574003
May 26, 2023
Sonny
5 out of 5 stars review

Verified Purchase

Great taste, half the price

I’m glad I decided to try Member’s Mark Alkaline water. Same great taste at nearly half the price of a more popular brand. I almost didn’t write this review because I thought it might be harder to keep up the stock and being a little selfish I want it available when I want it.

Helpful?61JQWEUZK2V713586574003
Nov 21, 2022
Fernando B
5 out of 5 stars review

Verified Purchase

High Quality, High Ph H20

One of the best on the market hands down. The really high PH makes this alkaline H20 effective. Not to replace solid medical advice but, this is the one brand that noticebaly aids with digestion, reflux, and general hydration. Greate tasting, and well balanced. No noticeable aftertaste.

Helpful?61JQWEUZK2V713586574003
Jul 1, 2025
FLINTSTONE
4 out of 5 stars review

Verified Purchase

GREAT WATER! BUT............

This is great water. But for some reason, some of the water bottles are BROWN at the bottom. I'm not sure if that's a sign of the water being old. Or if the chemicals inside the water have settled to the bottom. In any case, I always check to see if the water is clear at the bottom before purchasing.

Helpful?61JQWEUZK2V713586574003