Water and Wastewater Calculators


Chemical Per Day

Loading Calculator

Millions of Gallons

This calculator will tell you how many chemicals you need per day.
This calculator will tell you pounds of loading.
This calculator will convert gallons per minute to millions of gallons per day.


Tank Volume


Removal Efficiency

This will calculate the volume of a tank or clarifier.
This will convert C° to F° and F° to C°.
This will calculate how efficiently a treatment unit or process is working.


GPD to mL per Minute

Lbs. of Chemical / Gallon of Solution

Velocity Calculator

This calculator will transfer Gallons Per Day (GPD) into Milliliters (mL) per Minute.


This calculator will give you pounds of chemical in a gallon of solution. 
This calculator will give you the velocity the water flows through a pipe in Feet Per Second (FPS). 

Pump Draw Down

This calculates the flow rate in Gallons per Minute (GPM) for each pump. 
U.S. Water Services Corporation recognizes that there is a lot of uncertainty in the world today with the Coronavirus (COVID-19) spreading and we are here to help. There is no higher priority than to protect the health and safety of our clients! We would like to take the time to provide some important information about COVID-19 as it relates to drinking water and wastewater to provide clarity and put your mind at ease. We want to assure you that we are still open for business and all operations are being maintained! Learn More