Chlorine Injection Pump Calculator | Well Water

1

Well Pump Flow Rate

Flow Rate — your well pump's max output

GPM

Please enter a flow rate greater than 0

2

Target Chlorine Dosage

Desired Chlorine — ppm to inject into water

ppm

Step 2 target: about 2–7 ppm

Please enter a target dosage greater than 0

3

Chlorine Solution Strength

Solution Type — or enter custom strength below

4

Your Metering Pump

Pump Size — maximum output rating

Custom Pump Max Output

GPD

Output Switch

J-PRO-38: output switch 100% / 50% / 25 EXT, plus a stroke knob (0–100). The calculator picks the switch position and stroke for you.

Your Pump Settings

Required Output

—

GPD (of 38 GPD pump capacity)

Injection Rate

—

mL / minute

Ounces Per Hour

—

oz/hr

Set Your Pump Dials To:

Output Switch

—

%

Stroke

—

%

Stroke Knob Position —

10%25%50%75%100%

All Output Switch & Stroke Combinations

Output switch	Stroke (0–100)	Output	Fit

Important: These are starting-point settings. After installation, test for free chlorine residual downstream. Adjust the stroke up or down until you achieve 0.2–0.5 ppm free chlorine at the farthest faucet. High iron or hydrogen sulfide levels will increase chlorine demand and may require higher settings. The EPA drinking water standards allow up to 4 ppm chlorine residual in drinking water.