What pipe is this?
Measure the pipe and we’ll show what it could be. The chart below lists outside diameters for common pipe sizes and types.
Pipe size chart
All sizes in inches. Actual outside diameters vary by manufacturer, class, and age. Always measure the pipe and confirm with your fitting supplier before you order. Dimension ratio (DR) is outside diameter ÷ minimum wall and applies to plastic pipe. It is not used for iron, AC, or copper.
Chlorine feed calculator
How much chemical to feed for a dose. 1 MGD is about 694 GPM.
Liquid strength is the percent printed on the jug (grams of chlorine per 100 mL). Dry strength is percent available chlorine by weight, usually about 65. Always follow your plant’s feed procedures and safety rules.
Pipe volume and flushing
Gallons in a section of pipe, and how long to flush it. Pick a pipe from the chart or type the inside diameter.
Gallons per foot = 0.0408 × ID². Flushing velocity is often specified as at least 3 ft/s (AWWA C651 is the usual reference). Use the velocity and number of volume changes your specification requires.
Line disinfection calculator
Chlorine needed to disinfect a new or repaired main.
Use the dose and contact time your specification or state requires (AWWA C651 is the usual reference). Heavily chlorinated water must be neutralized and discharged according to your permit and local rules. This is a helper only.
Unit converter
Pick what you are converting, type a number, and see it in every unit.
Water loss calculator
Compare the water you produced or bought with the water you billed. The difference is your water loss. Use the same time period for every number, such as one month.
Unaccounted-for water is produced minus billed minus authorized unbilled use. It includes leaks and main breaks, meter errors, theft, and unmetered use. This tool cannot tell you which one. Check what limit your state or funding agency uses for water loss. This is a helper only.