Chlorine pounds per day calculator

Type the flow and the dose. You get the pounds per day and every step of the math.

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Answer: 32.5 lb/day

Pounds per day = flow in MGD × dose in mg/L × 8.34 lb/gal.
1.3 MGD × 3 mg/L × 8.34 ≈ 32.5 lb/day.

Exam-practice math only. It is not an instruction for a real plant, well or tank: for that, follow your system's procedures and ask your supervisor.

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The formula

Pounds per day = flow in MGD × concentration in mg/L × 8.34.[1]

Sources

US EPA Region 6, NPDES Reporting Requirements Handbook, Flow on day of sampling (MGD) x concentration (mg/L) x 8.34 (lbs/gal) = Loading (lbs/day); XIII.A 9. Concentration (mg/L) X Quantity (million gals.) X 8.34 = lbs. (read November 13, 2026)

Reviewed November 13, 2026. Published by OperadorListo. The sources above are the authority. This is a summary in our own words: check the source before you act on it.