Water Systems is ideal for plumbers and water works professionals. The app includes a variety of tables, equations, handy tips and notes.

Table of Contents:

- Capacity of Sewer Pipes
- Cold Water Storage per Occupant
- Converting WSFU to GPM
- Copper Pipes - Water Velocity Limits
- Copper Pipes - Heat Loss
- Copper Pipes - Insulation and Heat Loss
- Copper Tubes - Dimensions and Working Pressures
- Copper Tubes DWV - Drain, Waste and Vent
- Cross-Connection Control
- Discharge Height Vertical Pipes
- Domestic Hot Water System - Design Procedure
- Drainage Fixture Unit Loads for Sanitary Piping
- Drainage Fixture Unit Values (DFU)
- Drainage Piping and Hanger Spacing
- Drainage-Pipe Pitch
- Draining Roof Areas by Vertical Downspouts
- Epoxy Pipes - Support Spacing
- Expected Loads in Sanitary Drainage Systems
- Farm Use - Water Consumption
- Fixture Water Requirements
- Fixture-Unit Requirements on Trap Sizes
- Fixtures and Cold Water Storage Capacities
- Fixtures and Trap Sizes
- Gutter Slopes and Roof Drainage
- Horizontal Storm Drains
- Hot Water Consumption of Fixtures
- Hot Water Consumption per Occupant
- Hot Water Content in Fixtures
- Hot Water Flow Rates to Fixtures
- Hot and Cold Water Pipes Sizing
- Legionella
- Maximum Flow Velocities in Water Systems
- Plumbing Codes
- Properties of Water - Imperial Units
- Recommended Sizes of Water Supply Lines
- Septic Systems
- Sizing Domestic Hot-Water Heaters
- Sizing Water Supply Lines
- Stainless Steels Classifications
- Steel Pipe Flanges for Waterworks Services
- Suction Flow Velocities of Water
- Thermal Expansion - Volumetric or Cubic
- Waste Water and Flow Capacity
- Water Control Valves - Calculating Kv Values
- Water Delivery Flow Velocities
- Water Hammers
- Water Supply - Calculating Expected Demand
- Water Supply Fixture Units - WSFU
- Water-distribution Pipe
- Water-service Pipes
- Yard Fixtures - Water Consumption

* All Content is Searchable
* All Content is available offline (no need for WiFi or Internet Connection)
* Please send us any questions, comments or suggestions using our website

What’s New

Version 3.8

- Minor updates

Ratings and Reviews

1.0 out of 5
1 Rating

1 Rating

DaJaFa ,


It shows stuff that master plumbers need, and still not often...nothing is exactly usable by journeyman or apprentice plumbers...masters or inspectors only...and by that point you should already know the info...

Developer Response ,

Hi, The app content and features have been updated over the years. Please send us your feedback through our feedback section in the app. Thanks.


Emad Attia
24.5 MB

Requires iOS 6.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, Chinese, French, German, Indonesian, Italian, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish

Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

More By This Developer

You May Also Like