r/WaterTreatment↗
/r/WaterTreatment: A subreddit for any, and all types of water!
Need help with something water related? We're here to help! Whether it'd be whole house filtration systems, Softeners, under the sink Reverse Osmosis units, Well pumps, Wells, and supporting equipment. Ask away!
129k subscribers520 posts / mo in Sep 2026 (incl. <1% by known bots)380 authors / mosince 2015
r/WaterTreatment has 129k members (+236% over the last 12 months). It gets about 520 posts a month from 380 people. Top topics: Tap Water Taste, Lead Contamination and Aquarium Cycling.
When to post on r/WaterTreatment
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How r/WaterTreatment has grown
Subscriber growth
Subscribers over time
Monthly activity
Posts, comments and authors per month
Topics and brands on r/WaterTreatment
Top topics
Share of the subreddit's posts
- Tap Water Taste2.6%
- Lead Contamination1.1%
- Aquarium Cycling0.9%
- Cloudy Water Issues0.6%
- Tank Finds0.4%
Brands people mention
Most-mentioned brands and sites, last 12 months
- The Home Depot
- NSF
- Lowe's
- US EPA
- Pentair
Everything else about r/WaterTreatment
Posting rules and account requirements, how often posts get removed, who writes here (age, gender, countries), what people ask for, how they talk, and related subreddits — all in the full report.
Posts and activity for Sep 2026. Members from Reddit's subscriber counts. Read from the same data the app runs on. Our research