Drop in data, get understanding out. Hydrochart turns a CSV or Excel file of major-ion analyses into beautiful, publication-ready hydrochemistry charts — Piper, colour-coded Piper, Stiff, Schoeller, Chadha, Durov, Gibbs, Gaillardet and HFE-D. These charts bring the water story to life: revealing water types, mixing and evolution trends, and the outliers a column of numbers hides. Charge-balance QA and water-type classification come built in. No install, no upload, no spreadsheet wrangling.
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A spreadsheet of concentrations hides what's really going on. Hydrochart turns those numbers into beautiful hydrochemistry charts — so you can see water types, mixing, rock–water interaction and trends at a glance, and build a clear understanding from data you already have.
Grab any sample label and nudge it exactly where you want it — a leader line stays connected to its point the whole time, so the link is never lost. Double-click to snap back to automatic. It's a hands-on touch that few hydrochemistry plotters offer, and your layout exports straight to SVG and PNG, publication-ready.
Every analysis gets a charge-balance error (flagged beyond ±5%) and a TDS value — measured if supplied, or estimated from the ions when it isn't.
Piper and colour-coded Piper, Stiff, Schoeller, Chadha, Durov, Gibbs, Gaillardet, HFE-D, and a bivariate engine — all from one dataset, with automatic facies classification and seawater-intrusion screening.
Upload a CSV or Excel file, or type analyses in by hand. Fix a sample name, add a row, and the figure updates as you go.
Recolour any group or facies, hide categories, and switch to a colourblind-safe palette for publication.
Download a crisp SVG for figures, a high-res PNG for slides, or your cleaned data back out as CSV.
All computation happens in your browser. Your monitoring data never touches a server.
Upload a CSV or Excel file (or type rows in by hand) — one row per sample, with major-ion concentrations in mg/L:
Required: Ca, Mg, Na, HCO₃, SO₄, Cl
Optional: a Sample name, plus K, CO₃ and TDS
Column headers are matched automatically, so common variants (Sodium, Bicarbonate, EC…) are recognised.
⬇ Download CSV templateReview charge-balance errors and assigned water types. Tune the classification threshold to your method.
Set colours and marker size, then export a publication-ready SVG or PNG — and your tidied CSV.
Plot, QA, and classify as much as you like for free. Upgrade when you need publication-ready exports.
Placeholder pricing — set your own once you've validated demand.
Hydrochart is a static web app — there's no backend and no account. Monitoring data, bore IDs, and locations are processed entirely on your device, which matters when the numbers are confidential.
Hydrochart is a free, browser-based tool that helps water scientists understand their water systems. You give it a CSV or Excel file of major-ion concentrations in mg/L — calcium, magnesium, sodium, potassium, bicarbonate, sulfate and chloride — and it produces the standard hydrochemical diagrams (Piper, Stiff, Schoeller, Chadha, Durov, Gibbs, Gaillardet, HFE-D and bivariate plots) that reveal water types, mixing, and the chemical evolution of groundwater. It also checks the cation–anion charge balance of every sample and classifies its water type, so you can trust what you're seeing. Everything runs locally in your browser: no upload, no account, nothing to install. The full toolset is free; an optional Pro tier (USD $29/year) removes a light watermark and unlocks data export.
Yes. The full plotting and quality-control toolset is free to use, with no account and no time limit. Free exports carry a small watermark; the optional Pro tier (USD $29/year) removes it and unlocks CSV data export.
Piper (trilinear plus diamond), colour-coded Piper, Stiff, Schoeller, Chadha, Durov, Gibbs, Gaillardet, HFE-D, and bivariate scatter plots — all generated from the same dataset.
A CSV or Excel file with major ions in mg/L: calcium, magnesium, sodium, potassium, bicarbonate (and carbonate), sulfate and chloride. TDS, pH and EC are optional, and column headers are matched automatically.
No. Hydrochart runs entirely in your browser — there is no server and no account, so your data never leaves your device.
No sign-up. Open it, load the sample data, and turn a table of numbers into understanding in under a minute.
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