For hydrogeologists
PumpPilot: pumping test analysis in your browser
Aquifer parameters you can defend, from the pumping test you ran today.
PumpPilot fits the Theis, Hantush-Jacob, Papadopulos-Cooper and Neuman solutions to drawdown readings, and runs the Cooper-Jacob, recovery and step-drawdown methods.
PumpPilot Pro is $79 a month or $790 a year per person. Paid plans only.

- Solutions
- Theis, Hantush-Jacob, Papadopulos-Cooper, Neuman
- Straight-line
- Cooper-Jacob, recovery, step-drawdown
- Data
- No limit on wells or readings
- Install
- None. It runs in the browser
What you can do in PumpPilot
Each card is a guide in the PumpPilot documentation.
Getting started
Open a published pumping test, see the fitted solution against the readings, compare it with the published answer and save your work.
Read the guideEntering a test
Set the units, the pumping well, the aquifer thickness and the pumping schedule, then add observation wells and their readings.
Read the guideChoosing a solution
What each of the four solutions assumes, how the derivative on the plot points to one, and how Compare solutions ranks them.
Read the guideFitting and reading the results
Automatic and visual matching, holding parameters fixed, and what the standard errors, RMSE, AICc and the cautions mean.
Read the guideStraight-line methods
Cooper-Jacob on one well, Theis recovery after pumping stops, and well losses from a step-drawdown test.
Read the guideReports, files and the cloud
Print the analysis on one page, save and open .pumppilot files, keep tests in the cloud and share them with colleagues.
Read the guideMore guides
From the blog
Methods and file formats behind PumpPilot, written up in full.
AQTESOLV Alternatives for Pumping Test Analysis
AquiferTest, MLU, the USGS spreadsheets, welltestpy, timflow and PumpPilot compared with AQTESOLV: licence, platform, and which of them handle slug tests.
TutorialTheis vs Cooper-Jacob: Which Pumping Test Method to Use
Theis fits the whole drawdown curve; Cooper-Jacob fits the late straight line once u is small. When to use each, and when Hantush-Jacob or Neuman fits better.
TutorialHantush-Jacob and Neuman Methods for Pumping Tests
Analysing pumping tests in leaky and unconfined aquifers: Hantush-Jacob r/L type curves, the inflection-point method, Neuman delayed yield, Sy and beta.
TutorialTheis Recovery Test Analysis: Residual Drawdown Method
How to analyse a recovery test: residual drawdown against log(t/t'), T from the slope, why S cannot be found, unequal pumping rates, and the checks to run.
TutorialStep-Drawdown Test Analysis: Well Loss and Efficiency
How to analyse a step-drawdown test: Jacob and Rorabaugh equations, the s/Q plot, well efficiency, step length, and what C values say about a well.
