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AquaChem 11.0

Water Quality Data Analysis and Reporting Software

AquaChem is a groundwater software package for anyone working with water data, and is suited for projects requiring management, analysis and reporting of water quality data.


AquaChem is a groundwater software package specifically designed for anyone working with water data. This software is ideally suited for water projects requiring management, analysis and reporting of groundwater quality data.

AquaChem’s analysis tools cover a wide range of functions and calculations used for analyzing, interpreting and comparing water quality data. These tools include simple unit transformations, charge balances, statistics and sample mixing to more complex functions such as correlation matrices and geothermometer calculations.

These powerful analytical capabilities are complemented by an extensive selection of commonly used geochemical plots and graphs to represent the chemical characteristics water quality data.

Why Choose AquaChem?

  • Simple and easy analysis of water quality data
  • Effortless and flexible data importing and exporting
  • Over 25 essential geochemical plots and graphing techniques including piper, schoeller, scatter, box and whisker, stiff
  • Intelligent handling of non-detect results.
  • Automatic geochemical calculations of water type, sum of anions, sum of cations, ion balance, TDS, hardness and more.
  • Extensive suite of statistical calculations for water quality analysis including trend analyses, alert levels, outlier tests, test for normality and more.
  • Integrated geochemical modeling with PHREEQC (available from the USGS).
  • Water quality exceedence reports for multiple water quality standards.
  • Automatic ready-made reports.

AquaChem Applications

  • Analyze and report aqueous geochemistry of municipal groundwater supply wells
  • Report analytical lab results of samples from contaminated sites
  • Manage water quality data from sanitary landfills
  • Identify mineralization trends for mining exploration.
  • Analyze, interpret and plot water quality data.
  • Identify and report water quality guideline exceedences.
  • Demonstrate regulatory compliance with chemical exceedence and trend analyses reports.

What's New

What's New In AquaChem 11.0

Plot collections have been enhanced to include:

  • Multi-parameter plots: Box and Whisker, Scatter, and Time Series plots support adding multiple parameters
  • Secondary y-axes: Scatter and Time Series Plots support adding a secondary axis
  • Piper Diagram: Piper Diagram includes an additional setting to make symbols in the diamond portion of the plot proportional to a selected parameter such as TDS or conductance.
  • Plot Collections

  • Non-Detect Symbols: The symbols for data points on plots with non-detect QA flags can be automatically overridden to indicate the non-detect status.

  • Plot Collections

  • Symbol Editor: create ramped symbols based on numeric fields using unique values or categorized intervals based on a specified number of linear, log, or quantile breaks.: create ramped symbols based on numeric fields using unique values or categorized intervals based on a specified number of linear, log, or quantile breaks.

  • Plot Collections

  • Interactive Multi-Select: You can select multiple data points on plots and they will be selected in the Sample List and active Maps.
  • Settings: axis settings for plots have been reorganized into logical and collapsible groups.
  • Custom Calculated fields and parameters: designate a sample field or a parameter as a calculation-enabled in the Template Manager and insert values for selected samples based on a mathematical expression that can include parameters (with unit conversion) and common functions.
  • Data Management

  • Parameter Handling: automatically add a list of parameters based on its name or CAS number (before or during import) from the Chemical List and automatically delete parameters with no measurements in your project – this greatly improves automating parameter management.

  • Data Management

  • Sample Set Creation: Add a sample set condition based on the exceedance of any parameter in a specified parameter group.

  • Data Management
  • Import: Improved performance when importing larger AquaChem 2014 projects
  • String Data Type: string data fields can now be specified with any length
  • International date handling: Import Data supports international date formats

AquaChem’s analysis tools cover a range of functions and calculations including unit transformations, charge balances, and statistics. These powerful analytical capabilities are complemented by an extensive selection of commonly used geochemical plots representing the chemical characteristics of water quality data and a console for R scripts that offers powerful data science tools.

AquaChem is a groundwater software package specifically designed for anyone working on environmental projects requiring management, analysis, and reporting of water quality data.

  • Easily import data from various file types (.txt, .csv, .xls, .xlsx, .mdb, and .accdb) and formats (samples as rows, samples as columns, one analyzed value for each row).
  • Export stations, analysis data and geochemical plots to various file formats including MS-Excel spreadsheets (.xlsx), text files (.txt, .asc), MS-Access databases (mdb, .accdb), and customizable print-ready Excel and PowerPoint templates (.xlsx, .pptx)
  • Define sets of samples and sampling locations based on static lists (such as locations at a given site, watershed, or regulatory status) or dynamic criteria such as exceedances or sample collection time horizons so that you can easily and quickly generate periodic reports and drill down to the specific information that you need
  • Data management workflows include data quality checks ensuring users have completed/included required information and that it meets specified
  • Import and manage Water Quality Standards in your project so that you can track project-specific regulatory requirements. Exceedances are automatically color-coded for quick reference.

AquaChem is capable of generating a wide variety of plots to help you better understand your data:

  • Geochemical plots: Piper, Stiff, Durov, Schoeller, Wilcox, Giggenbach, Meteoric Water Line, Ludwig-Langelier, Ternary;
  • Statistical Plots: Box and Whisker, Histogram, Probability, Quantile, Detection Summary; and
  • General Plots: Scatter, Pie, Stacked Bars, Radial, Time Series

AquaChem allows you to create multiple plots for the same datasets and view these plots simultaneously side-by-side. The plots can be made interactive which means when chose to base your data on dynamic sources, you can click on data points in the plot and the corresponding samples are highlighted in the sample list. Similarly, you can select samples from the Sample List and they will be highlighted on any plots in which they appear. This is useful for exploring and analyzing the data, and for identifying outlier or otherwise interesting data.

AquaChem 9.0 comes with a comprehensive set of functions and converters that allow you to perform quick, on-the-fly analyses on your water quality data. AquaChem 9.0 is capable of the following calculations and conversions:

  • Unit Conversion: AquaChem manages measurement and concentration units for you – switch between mass-, molar-, and equivalent-based concentrations on the fly.
  • Ionic Functions: Water Type, Electroneutrality/Ion Balance, Sum of Anions, Sum of Cations, TDS, Hardness, Alkalinity
  • General: Date functions, Exceedance counts, Total Organic Carbon, Total Organic Halogens
  • Corrosion and Scaling Indices: Langelier Saturation, Ryznar Stability, Puckorius Scaling, and Larson-Skold
  • Agricultural Irrigation Metrics: Sodium Absorption Ratio, Magnesium Hazard, Residual Sodium Carbonate
  • Enthalpy: Enthalpy of water (liquid or vapor) based on temperature or dissolved silica
  • Isotopes: Estimates of infiltration elevation and temperature based on Oxygen-18 and Deuterium isotopic fractionation

In just a few clicks, AquaChem delivers ready-made reports that contain key information about your water quality data. The following automatic reports are supported:

  • Sample Report: A standardized sample report that tabulates sample results; optionally compares results to active Water Quality Standards and calculates summary statistics, including min/max, specified quantiles, and the mean.
  • Data Reports: Export data tables to print-ready MS-Excel templates that you can customize.
  • Plot Collections: Print collections of plots based on dynamic conditions or set lists of data. You can easily set up a series of plots for periodic reporting and export the plots to print-ready formats in a few clicks.

AquaChem 9.0 includes a console that allows you to run scripts in the R scripting language and leverage the thousands of available libraries that facilitate data analyses, visualization, categorization, and much more.

System Requirements

Hardware Requirements

Operating Systems Windows 10 Pro or Enterprise
Processor 32-bit or 64-bit
Hard Disk 250 MB
Networking Hardware Network Card (required for soft key licensing)

Additional Requirements

In some cases, full local administrative rights may be required to install AquaChem

We also recommend using English language and regional settings.

Software Requirements

32-bit (x86) version of MS Office 365 Access or MS Office 2019 Access


32-bit (x86) version of MS Access Runtime Engine 2007 or newer

Note: if you have a 64-bit version of Microsoft Office, you will need to install a 32-bit version of the MS-Access Runtime Engine that is different from the your Office version. For example, if you have Office 2019 x64 installed, you can install the 32-bit version of the Access Runtime Engine 2010, 2013, or 2016.