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.
Already use QUAL2Kw? Import your Excel workbook (.xls, .xlsx, .xlsm) and run it in the browser: the engine reproduces 15 calibrated QUAL2Kw models within 5% or a small absolute band.
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 published QUAL2K and QUAL2Kw 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.
Compare your characterizations with discharge limits 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 and explainable: the methods, equations and assumptions are documented so you and your reviewers can check them.
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 review your setup, without replacing the deterministic engine. Its answers can be wrong, so check them.
Import your QUAL2Kw workbook (.xls, .xlsx, .xlsm) directly, or define reaches, sources and kinetics in a guided step-by-step wizard. No Excel or macros; 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, no local installation needed. Small models return in seconds, large ones in a few minutes.
Reproduces the output sheets of 15 calibrated QUAL2Kw models (3 to 279 reaches) within 5% or a fixed absolute band. See the validation
Hydrolitica is a product of Teachers AI Éxito LLC. It 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, nutrient, temperature and pH profiles, with the daily mean, minimum and maximum.
Start in minutes with the free plan, no card needed. Move to Pro only if you need unlimited use.
Open the Prediction Engine