Open source · Free forever

Water treatment
engineering tools

Professional-grade calculators and diagnostic tools for EDAR, ETAP, RO systems, and industrial water instrumentation.

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Tools & Calculators
Built for field engineers

Each tool is designed from real-world experience in water treatment plants across Spain, Latin America, and the Middle East.

Tool 01

AQUA-INST PRO

Complete instrumentation toolkit for water treatment technicians. Signal calculators, troubleshooting trees, calibration registers, and instrument quick-reference for E+H, Siemens, KROHNE, and Yokogawa.

4–20 mA EDAR ETAP Calibration
Tool 02

RO Plant Advisor

Interactive reverse osmosis process calculator with animated SVG flow diagrams. Design and optimize RO systems including chemical dosing, salt rejection, and recovery calculations.

Reverse Osmosis Chemical Dosing SVG Diagram
Tool 03

EDAR mA Calculator

Precision mA-to-process and process-to-mA signal converter for wastewater treatment plants. Includes verified normative data from MSAN 2019 for conductivity, turbidity, and pH.

4–20 mA Signal Conversion MSAN 2019
Tool 04

Tratamiento de Agua PRO

Comprehensive water treatment reference tool covering process chemistry, unit operations, and treatment train design for potable and industrial water applications.

ETAP Process Chemistry Treatment Design
Tool 05

WT Smart Calculator

Multi-purpose engineering calculator for water treatment professionals. Unit conversions, flow calculations, chemical dosing, and process parameter estimation in a single interface.

Unit Conversion Flow Calc Chemical Dosing
5
Engineering tools
30+
Years experience
100%
Free & open source
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Every tool runs offline as a single HTML file. No installation needed — just open in any browser.

About the creator
Built by an engineer, for engineers
GB
Ing. Gustavo Blanco Walter
Senior Water & Process Engineer · Valencia, Spain

30+ years of experience in industrial water treatment, instrumentation, Oil & Gas, EDAR/ETAP, and petrochemical systems. Specialized in RO/UF/MBR/DAF systems, field instrumentation (E+H, Siemens, KROHNE, Yokogawa), and process optimization across Venezuela, Peru, and Spain.

Previously at GE Power & Water, Nalco/Ecolab, SUEZ, and Veolia Water Solutions. PDVSA advisory experience at Refinería El Palito and Refinería Amuay.