Hydrolitica brings together the tools you need to assess, model and communicate the state of water — from technical calculators to advanced modeling of water bodies. Built for the Latin American regulatory context.
From a single calculation to the full modeling of a water body.
ICA, Streeter-Phelps, discharge mass balance and biodegradability. Instant results with verifiable scientific methodology.
See calculators →Reach-by-reach modeling of dissolved oxygen, BOD, nitrogen, phosphorus and pathogens. Based on the EPA QUAL2K kinetic framework.
Open engine →Compute blue, green and grey water footprint. Integrate your water-quality model for a data-based grey footprint.
Open module →Estimate the grey-water footprint of a discharge in 30 seconds. No signup. Download the PDF instantly.
Try it now →Calculate, model and generate technical reports in minutes, backed by verifiable science.
Track water quality across your basins, verify discharger compliance and analyse assimilative capacity.
Verify compliance, manage characterizations and prepare self-monitoring reports with technical rigour.
Access proven modeling tools, export data for analysis and use it in your courses.
Every result in Hydrolitica is reproducible, explainable and defensible before any environmental authority.
Manning's equation, Streeter-Phelps, and the full QUAL2K kinetic framework. Every result is reproducible and explainable.
Use the built-in AI assistant to interpret results, suggest parameter values, and validate your setup — without replacing the deterministic engine.
Forget the Excel plugin. Define reaches, sources, and kinetics through a guided step-by-step interface. Export as JSON or CSV anytime.
Run the simulation and see dissolved oxygen, BOD, nitrogen, and phosphorus profiles instantly as interactive charts.
BOD decay, reaeration, nitrification, denitrification, phosphorus cycling, pathogen die-off, and sediment oxygen demand — all included.
The Python engine runs on Google Cloud. Results return in seconds, no local installation needed.
Hydrolitica was created by Ana María Buitrago, MSc in Water Resources Management (Universidad del Valle) with over 10 years of experience in water-quality modeling for regional authorities, industries and infrastructure projects in Colombia. Author of a peer-reviewed methodology for assessing surface-water vulnerability to diffuse agricultural pollution, published in Sustainability (MDPI, Q1).
Set up reaches, headwater conditions, point sources, and diffuse sources.
Set kinetic rates, meteorological data, and observed data for calibration.
Hit "Run Simulation" and get dissolved oxygen, BOD, and nutrient profiles instantly.
Start using the tools in minutes. Free, open-source and designed for the Latin American regulatory context.
Open the Prediction Engine