AquaChem

AquaChem is desktop software for managing, analyzing, and plotting environmental and hydrogeological water quality data. It stores chemical sample data in a database, automatically computing unit conversions, ion charge balances, water types, and comparisons against configurable regulatory standards. Analysis features include over 25 geochemical plots (such as Piper, Durov, Stiff, Schoeller, and Wilcox diagrams), statistical tests like Mann-Kendall trend analysis, integrated geochemical modeling via USGS PHREEQC, and an embedded R console for custom statistical workflows.

Practising hydrogeologists and environmental engineers use AquaChem to organize laboratory sampling results and generate presentation-ready plots and exceedance reports for groundwater monitoring networks, contaminated sites, or municipal supply wells. Its bulk data import tools and automated calculations reduce manual data processing tasks. However, AquaChem is commercial proprietary software restricted to Windows operating systems, requiring softkey or USB hardkey licensing, and presents a moderate learning curve for users new to geochemical database management.