Sewer Sentry ROI & Savings Calculator

Calculate your potential savings.
See how reducing stormwater inflow could impact your municipality's pumping and treatment cost.

System information

Enter your system data to estimate potential stormwater inflow reduction, annual savings, project investment and payback.

Total number of manholes

Estimated yearly excess wet-weather inflow due to rain events (gallons/year) Enter the estimated annual volume of excess wastewater flow attributable to rain events.

How can this be estimated? Determine the average daily plant inflow during a prolonged dry-weather period. Multiply that daily baseline by 365 (or 366), then subtract the resulting annual baseline flow from the plant's total annual inflow.

Pumping + variable treatment cost ($ per 1,000 gallons) Include applicable variable costs such as electricity, chemicals, pumping and wastewater treatment.

Annual maintenance & repair savings ($/year) Estimated annual savings from avoided repairs, inspections, emergency maintenance or related costs.

Your estimated impact

Results update automatically as you enter your system information.

Manholes to retrofit

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Full replacements

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Stormwater inflow prevented annually

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Estimated gallons per year

Annual pumping & treatment savings

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Annual maintenance & repair savings

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Total estimated annual savings

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Estimated project investment

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Estimated simple payback period

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Request a detailed system analysis

This calculator provides preliminary estimates for planning and evaluation purposes only. Results depend on the accuracy of the system data entered and Sewer Sentry's underlying project assumptions. Actual savings, installation requirements, operating conditions and financial performance may vary.