Water & Waste Management Pro, part of MultiEducator’s Formulator line, is the most comprehensive water and wastewater engineering app available. With over 245 specialized engineering formulas, nearly 900 unit conversions, and 56 temperature scale conversions — over 1,100 formulas in total — this app puts an entire water engineering library in your pocket.
245+ Engineering Formulas across 15 Categories:
• Water Flow: Flow rate, velocity, pipe diameter, V-notch weir, and drilled well supply calculations
• Groundwater: Porosity, void ratio, transmissivity, hydraulic conductivity, Darcy’s law, Reynolds number, and aquifer flow
• Sewage Treatment: Aerobic and anaerobic digester calculations
• Pollution: Power plant thermal discharge, effective stack height for gas disposal
• Sludge: Activated sludge, sludge digestion, and effluent disposal (33 formulas)
• Water Supply: Domestic water supply, fire protection flow rate, and equivalent pipe length
• Facilities: Chemical dosing, distribution systems, disinfection, maintenance, and laboratory (53 formulas)
• Storm Runoff: Rational method, Manning’s kinematic solution, SCS curve number, and time of concentration
• Sewer Pipe: Sewer flow rates, pipe slope, velocity, earth loads, and sanitary sewage
• Waste: Waste gases, liquid waste, and solid waste calculations (38 formulas)
• River Pollution: Stream pollution, waste effects on water quality, and non-conservative substances
• Hydraulics: Hazen-Williams head loss, Darcy-Weisbach, Bernoulli’s equation, Chezy formula, and Reynolds number
• Pumping: Water horsepower, brake horsepower, pump efficiency, NPSH, specific speed, and affinity laws
• Water Treatment: Chlorine dosage, CT disinfection values, chemical feed rates, and filtration rates
• Wastewater Operations: BOD loading, surface overflow rate, weir overflow rate, detention time, SVI, F/M ratio, MCRT, and removal efficiency
900+ Unit Conversions across 17 Categories:
• Area & Volume Formulas (60+), Metric Conversions (460+), Weights (83), Linear Measure, Liquid Measures, Pressures, and more
• Switch between US and Metric units with a single tap
56 Temperature Scale Conversions:
• Convert between Celsius, Fahrenheit, Kelvin, Rankine, Réaumur, Newton, Delisle, and Rømer
Professional Features:
• Save and compare calculation results
• Favorite frequently used calculators for quick access
• Calculation history with detailed breakdowns
• Toggle between US and Metric units across all calculators
• Dark mode optimized for field use
• Works offline — no internet required
Water & Waste Management Pro is FREE to download with access to core calculators and all conversions. Upgrade to Pro to unlock saved calculations, additional categories, and premium features.
Every calculator provides detailed breakdowns with both US and Metric results. Input your values, get instant results, and understand the math behind every calculation.
Popular Calculators Include:
Instantly convert between hundreds of units used in water and wastewater engineering. All conversions are organized by category for quick access.
17 Conversion Categories:
8 Temperature Scales — 56 Conversions:
