💧 EPA LT2ESWTR (Ozone CT mg/L-min, 3.0-Log Cryptosporidium & Giardia Inactivation)

Ozone Contactor CT & Inactivation Calculator

Calculate disinfectant Concentration x Time (CT in mg/L-min) and pathogen log-inactivation credits (3.0-log Cryptosporidium oocyst and Giardia cyst inactivation) in multi-stage baffled ozone contact basins under EPA Long Term 2 Enhanced Surface Water Treatment Rule (LT2ESWTR): model water temperature kinetics, contactor T10/HRT baffling factors, and compliance margins.

1. Project & Operating Inputs

Plant Water Flow Rate (MGD e.g. 25.0 MGD Municipal Plant)

Winter Minimum Water Temp (°C e.g. 4.0°C Cold Surface Water)

Customer Bid Price for Supplied Ozone Contactor Basin & SCADA ($)

Reinforced Concrete 6-Stage Basin, Ceramic Dome Diffusers, Analyzers ($)

2. Financial Breakdown & Yield

EPA LT2ESWTR OZONE CT

Turnkey Ozone Contactor Basin Profit

Water Quality Engineering Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Direct Cost