50 professional calculators based on AWWA/EPA standards
Calculate aeration basin volume and SRT.
Calculate oxygen requirements for activated sludge.
Calculate belt press capacity for dewatering.
Calculate land application rate for biosolids.
Calculate blower capacity for aeration systems.
Calculate organic loading for wastewater treatment.
Calculate centrifuge capacity for sludge dewatering.
Calculate chlorine feed rate for disinfection.
Calculate clarifier sizing for activated sludge.
Calculate Langelier and Ryznar indices for corrosion control.
Calculate CT value for pathogen inactivation.
Calculate culvert size for roadway drainage.
Calculate denitrification zone sizing.
Calculate anaerobic digester volume.
Estimate disinfection byproduct formation.
Calculate septic drainfield area requirements.
Calculate filter area and loading rate for granular media filters.
Calculate required fire flow using ISO method.
Calculate flocculation basin sizing and mixing requirements.
Calculate fluoride feed rate for water fluoridation.
Calculate force main diameter and head loss.
Calculate gravity sewer pipe sizing using Manning's equation.
Calculate infiltration and inflow allowances.
Calculate lift station wet well and pump sizing.
Calculate membrane bioreactor sizing.
Calculate Net Positive Suction Head Available.
Calculate nitrogen and phosphorus removal requirements.
Calculate open channel flow using Manning's equation.
Calculate detention pond outlet orifice size.
Calculate flow rate, velocity, and head loss in pipes using Hazen-Williams.
Calculate facultative lagoon dimensions.
Calculate total dynamic head for pump selection.
Calculate pump brake horsepower and motor sizing.
Calculate return activated sludge flow rate.
Calculate peak stormwater flow using rational method.
Calculate rotating biological contactor sizing.
Calculate sequencing batch reactor sizing.
Calculate rectangular sedimentation basin dimensions.
Calculate septic tank capacity requirements.
Calculate gravity thickener dimensions.
Calculate required water storage capacity.
Calculate stormwater detention volume.
Calculate time of concentration using multiple methods.
Calculate trickling filter sizing and loading.
Calculate UV dose and reactor sizing.
Calculate waste activated sludge flow rate.
Calculate community water demand based on population.
Calculate water quality treatment volume.
Calculate flow over rectangular and V-notch weirs.
Calculate treatment wetland area.
Calculate water blending ratios from two sources to achieve a target water quality parameter.
Calculate chemical feed rate in lb/day or gal/day from dosage, flow rate, and solution strength for water treatment.
Forecast future water demand based on population growth, per capita usage, and peak factors with year-by-year projections.
Calculate hydraulic detention time (HRT) from tank volume and flow rate. Essential for water treatment basin sizing and process control.
Estimate disinfection byproduct formation including TTHM and HAA5 versus EPA MCL limits.
Perform water and wastewater energy audit calculating specific energy consumption versus industry benchmarks.
Calculate fluoride chemical feed rate based on target concentration, flow rate, and chemical type/purity.
Interpret jar test results to determine optimal coagulant dose for water treatment.
Calculate system leak rate, non-revenue water percentage, and Infrastructure Leakage Index with AWWA benchmarks.
Calculate water system balance including inflow sources, outflow uses, surplus/deficit, and loss percentage.
Multi-step guided workflows that chain calculators together.
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