KDP categories · Top KDP authors
Water Quality & Treatment: Amazon KDP category data
Amazon Books Best Sellers data for Water Quality & Treatment, updated Nov 3, 2026: median price $23.69, median 64 reviews, average rating 4.5 and a KDPTop opportunity score of 35/100 (highly competitive).
| Price range (middle 50%) | $15.99 – $33.99 |
|---|---|
| Average rating | 4.5 |
| New releases (90 days) | 15% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Its median reviews are 20% of the parent category Environmental (310), one of the easier corners under it.
- 15% of its best sellers came out in the last 90 days, more than in 80% of Books categories: readers here keep buying new titles.
- At $23.69 its median price beats 82% of Books categories, leaving more margin per copy.
Top 10 Water Quality & Treatment best sellers
-
The Prepper's Water Survival Handbook: Easy to Follow Steps to Find, Filter, Purify and Store Water for Long Term Readiness, Self Reliance and Emergency Preparedness (Self Reliance Essentials)
- List rank#1
- Price$17.97
- Rating4.8
- Reviews194
-
Bug-In Home Survival Guide For American Dads: Fortress Your Family Before The Next Blackout & Empty Shelves Hit | Ex-SEAL’s 90-Day Protocol To Defend Your Home While Others Panic And Beg
by Ryan Garrison
- List rank#2
- Price$29.90
- Rating4.0
- Reviews75
-
Prepper's Water Survival Secrets: Cost-Effective Water Collection, Filtration, Purification & Storage Strategies for Your Family to Thrive in Any Crisis
by Hadassah Lewis
- List rank#3
- Price$13.99
- Rating4.8
- Reviews116
-
The Prepper's Water Survival Guide: Harvest, Treat, and Store Your Most Vital Resource
by Daisy Luther
- List rank#4
- Price$14.04
- Rating4.5
- Reviews1,328
-
The Prepper’s Survival Collection: A Beginner's Guide to Find, Filter and Purify Water + How to Grow, Preserve and Store Food for Emergency Preparedness in Uncertain Times (Self Reliance Essentials)
- List rank#5
- Price$24.99
- Rating4.8
- Reviews55
-
Cadillac Desert: The American West and Its Disappearing Water, Revised Edition
by Marc Reisner
- List rank#6
- Price$2.99
- Rating4.6
- Reviews1,441
-
Water Projects: The Complete DIY Guide to Building Self-Sufficient Water Systems for Your Home, Cabin, or Garden
by Evan Whitlock
- List rank#7
- Price$16.99
- Rating4.4
- Reviews23
-
The WW3 Prepper’s Survival Bible: Your Definitive Long-Term Survival Guide | 1000 Days of No Grid Survival Projects, Bug-In Plans, Homesteading, Medicine, Off-Grid Living, Water Filtration & More
by Bud R. Hoyles
- List rank#8
- Price$27.97
- Rating4.6
- Reviews312
-
Prepper's Water Purification Survival Bible: Discover the 7 Essential Skills on How to Find, Collect, Filter, Purifying and Store Water with Easy Step by Step Instructions
by Bryan Wells
- List rank#9
- Price$15.99
- Rating4.4
- Reviews8
-
AIR INTO WATER: PRACTICAL COLLECTION METHODS FOR OFF-GRID LIVING AND EMERGENCY PREPAREDNESS
by RANIA ACKLAND
- List rank#10
- Price$19.99
- Reviews-
FAQ
Is Water Quality & Treatment a good niche for Amazon KDP?
Its KDPTop opportunity score is 35/100, which makes it highly competitive. The median best seller has 64 reviews and sells for $23.69.
How many reviews do you need to rank in Water Quality & Treatment?
The median best seller has 64 reviews, and 67% of them have fewer than 100.
What do Water Quality & Treatment best sellers cost?
The median price is $23.69; half of the best sellers are priced between $15.99 and $33.99.
Can new books break into Water Quality & Treatment?
15% of the current best sellers were released in the last 90 days.
About this data
Data comes from KDPTop's daily crawl of Amazon's public Best Sellers pages; medians use the latest list. The opportunity score (0–100, higher is easier to enter) combines the review barrier, the share of low-review books, list turnover, new-release share and price.