KDP categories · Top KDP authors
Water Supply: Amazon KDP category data
Amazon Kindle eBooks Best Sellers data for Water Supply, updated Nov 3, 2026: median price $9.99, median 30 reviews, average rating 4.4 and a KDPTop opportunity score of 22/100 (highly competitive).
| Price range (middle 50%) | $4.99 – $12.48 |
|---|---|
| Average rating | 4.4 |
| New releases (90 days) | 14% |
| Books on the list | 100 |
| Store | Kindle eBooks |
What stands out
- Its median reviews are 6% of the parent category Environment (486), one of the easier corners under it.
- Prices spread wide: the middle half runs from $4.99 to $12.48, so budget editions and premium or boxed sets sell side by side.
Top 10 Water Supply 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 Book 1)
- List rank#1
- Price$4.99
- Rating4.8
- Reviews194
-
Cadillac Desert: The American West and Its Disappearing Water, Revised Edition
by Marc Reisner
- List rank#2
- Price$2.99
- Rating4.6
- Reviews1,441
-
The Practical Prepper’s Survival Bible: Your Complete Guide To Crisis Preparation With 100+ No Grid Survival Projects, Homesteading, Canning, Off Grid Living, Medicine, Water Filtration & More
by Cole Barrett
- List rank#3
- Price$2.99
- Rating4.6
- Reviews602
-
Water Projects: The Complete DIY Guide to Building Self-Sufficient Water Systems for Your Home, Cabin, or Garden
by Evan Whitlock
- List rank#4
- Price$9.99
- Rating4.4
- Reviews23
-
Prepper’s Water Purification Survival Bible: How to Find, Harvest, Filter, Purify, and Store Water Off the Grid
by Johnathan Nash
- List rank#5
- Price$6.99
- Rating4.6
- Reviews358
-
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 ... Times (Self Reliance Essentials Book 3)
- List rank#6
- Price$4.99
- Rating4.8
- Reviews55
-
Water: The Epic Struggle for Wealth, Power, and Civilization
by Steven Solomon
- List rank#7
- Price$3.99
- Rating4.4
- Reviews191
-
PREPPER’S WATER SURVIVAL BIBLE: Save Your Life with the Only Water Survival Book You’ll Ever Need! Complete Action Plan to Find, Harvest, Filter, Purify, ... Emergency! (PREPPER SURVIVAL BIBLE BOOK 1)
by CONDITION 1: READY
- List rank#8
- Price$9.99
- Rating4.7
- Reviews54
-
Earth's Living Water: Its History, Its Ruin, and the Way Back (The Stone and Water Series)
- List rank#9
- Price$12.99
- Reviews-
-
Essential Rainwater Harvesting: A Guide to Home-Scale System Design (Sustainable Building Essentials)
by Michelle Avis P. Eng
- List rank#10
- Price$12.99
- Rating4.6
- Reviews142
FAQ
Is Water Supply a good niche for Amazon KDP?
Its KDPTop opportunity score is 22/100, which makes it highly competitive. The median best seller has 30 reviews and sells for $9.99.
How many reviews do you need to rank in Water Supply?
The median best seller has 30 reviews, and 75% of them have fewer than 100.
What do Water Supply best sellers cost?
The median price is $9.99; half of the best sellers are priced between $4.99 and $12.48.
Can new books break into Water Supply?
14% 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.