diff --git a/ProcessLib/GroundwaterFlow/Tests.cmake b/ProcessLib/GroundwaterFlow/Tests.cmake
index 1dba52abefaeab41cd00b51de83bcdbe9ee90514..c0a1c15c3b140fab501cbbf0fb0913c8aa06b15f 100644
--- a/ProcessLib/GroundwaterFlow/Tests.cmake
+++ b/ProcessLib/GroundwaterFlow/Tests.cmake
@@ -694,6 +694,18 @@ AddTest(
square_1x1_quad_1e2_volumetricsourceterm_analytical_solution.vtu square_1e2_volumetricsourceterm_pcs_0_ts_1_t_1.000000.vtu analytical_solution pressure 1e-14 1e-16
)
+AddTest(
+ NAME GroundWaterFlowProcess_VolumetricSourceTerm_square_1e3
+ PATH Elliptic/square_1x1_GroundWaterFlow
+ EXECUTABLE ogs
+ EXECUTABLE_ARGS square_1e3_volumetricsourceterm.prj
+ WRAPPER time
+ TESTER vtkdiff
+ REQUIREMENTS NOT (OGS_USE_LIS OR OGS_USE_MPI)
+ DIFF_DATA
+ square_1x1_quad_1e3_volumetricsourceterm_analytical_solution.vtu square_1e3_volumetricsourceterm_pcs_0_ts_1_t_1.000000.vtu analytical_solution pressure 1e-10 1e-11
+)
+
AddTest(
NAME PythonBCGroundWaterFlowProcessLaplaceEqDirichletNeumann
PATH Elliptic/square_1x1_GroundWaterFlow_Python
diff --git a/Tests/Data/Elliptic/square_1x1_GroundWaterFlow/square_1e3_volumetricsourceterm.prj b/Tests/Data/Elliptic/square_1x1_GroundWaterFlow/square_1e3_volumetricsourceterm.prj
new file mode 100644
index 0000000000000000000000000000000000000000..23892db304c4d425f47e5de5e62d20f9460653ef
--- /dev/null
+++ b/Tests/Data/Elliptic/square_1x1_GroundWaterFlow/square_1e3_volumetricsourceterm.prj
@@ -0,0 +1,128 @@
+<?xml version="1.0" encoding="ISO-8859-1"?>
+<OpenGeoSysProject>
+ <meshes>
+ <mesh>square_1x1_quad_1e3.vtu</mesh>
+ <mesh>square_1x1_quad_1e3_geometry_right.vtu</mesh>
+ <mesh>square_1x1_quad_1e3_geometry_left.vtu</mesh>
+ </meshes>
+ <processes>
+ <process>
+ <name>GW23</name>
+ <type>GROUNDWATER_FLOW</type>
+ <integration_order>2</integration_order>
+ <hydraulic_conductivity>K</hydraulic_conductivity>
+ <process_variables>
+ <process_variable>pressure</process_variable>
+ </process_variables>
+ <secondary_variables>
+ <secondary_variable type="static" internal_name="darcy_velocity" output_name="v"/>
+ </secondary_variables>
+ </process>
+ </processes>
+ <time_loop>
+ <processes>
+ <process ref="GW23">
+ <nonlinear_solver>basic_picard</nonlinear_solver>
+ <convergence_criterion>
+ <type>DeltaX</type>
+ <norm_type>NORM2</norm_type>
+ <abstol>1.e-6</abstol>
+ </convergence_criterion>
+ <time_discretization>
+ <type>BackwardEuler</type>
+ </time_discretization>
+ <output>
+ <variables>
+ <variable> pressure </variable>
+ <variable> v </variable>
+ </variables>
+ </output>
+ <time_stepping>
+ <type>SingleStep</type>
+ </time_stepping>
+ </process>
+ </processes>
+ <output>
+ <type>VTK</type>
+ <prefix>square_1e3_volumetricsourceterm</prefix>
+ </output>
+ </time_loop>
+ <nonlinear_solvers>
+ <nonlinear_solver>
+ <name>basic_picard</name>
+ <type>Picard</type>
+ <max_iter>10</max_iter>
+ <linear_solver>general_linear_solver</linear_solver>
+ </nonlinear_solver>
+ </nonlinear_solvers>
+ <linear_solvers>
+ <linear_solver>
+ <name>general_linear_solver</name>
+ <lis>-i cg -p jacobi -tol 1e-16 -maxiter 10000</lis>
+ <eigen>
+ <solver_type>CG</solver_type>
+ <precon_type>DIAGONAL</precon_type>
+ <max_iteration_step>10000</max_iteration_step>
+ <error_tolerance>1e-16</error_tolerance>
+ </eigen>
+ <petsc>
+ <prefix>gw</prefix>
+ <parameters>-gw_ksp_type cg -gw_pc_type bjacobi -gw_ksp_rtol 1e-16 -gw_ksp_max_it 10000</parameters>
+ </petsc>
+ </linear_solver>
+ </linear_solvers>
+ <parameters>
+ <parameter>
+ <name>K</name>
+ <type>Constant</type>
+ <value>1</value>
+ </parameter>
+ <parameter>
+ <name>p0</name>
+ <type>Constant</type>
+ <value>0</value>
+ </parameter>
+ <parameter>
+ <name>p_Dirichlet_left</name>
+ <type>Constant</type>
+ <value>2</value>
+ </parameter>
+ <parameter>
+ <name>p_Dirichlet_right</name>
+ <type>Constant</type>
+ <value>1</value>
+ </parameter>
+ <parameter>
+ <name>volumetric_source_term_parameter</name>
+ <type>Constant</type>
+ <value>1</value>
+ </parameter>
+ </parameters>
+ <process_variables>
+ <process_variable>
+ <name>pressure</name>
+ <components>1</components>
+ <order>1</order>
+ <initial_condition>p0</initial_condition>
+ <boundary_conditions>
+ <boundary_condition>
+ <mesh>square_1x1_quad_1e3_geometry_left</mesh>
+ <type>Dirichlet</type>
+ <parameter>p_Dirichlet_left</parameter>
+ </boundary_condition>
+ <boundary_condition>
+ <mesh>square_1x1_quad_1e3_geometry_right</mesh>
+ <type>Dirichlet</type>
+ <parameter>p_Dirichlet_right</parameter>
+ </boundary_condition>
+ </boundary_conditions>
+ <source_terms>
+ <source_term>
+ <mesh>square_1x1_quad_1e3</mesh>
+ <type>Volumetric</type>
+ <parameter>volumetric_source_term_parameter</parameter>
+ </source_term>
+ </source_terms>
+ </process_variable>
+ </process_variables>
+</OpenGeoSysProject>
diff --git a/Tests/Data/Elliptic/square_1x1_GroundWaterFlow/square_1x1_quad_1e3_geometry_left.vtu b/Tests/Data/Elliptic/square_1x1_GroundWaterFlow/square_1x1_quad_1e3_geometry_left.vtu
new file mode 100644
index 0000000000000000000000000000000000000000..4c238eff24fa1a4d843ab1e4826f708f2d6b8126
--- /dev/null
+++ b/Tests/Data/Elliptic/square_1x1_GroundWaterFlow/square_1x1_quad_1e3_geometry_left.vtu
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:80905f821e8267dad85ae81560007ecb77be79f7770e4221dae5e53aa1523277
+size 4006
diff --git a/Tests/Data/Elliptic/square_1x1_GroundWaterFlow/square_1x1_quad_1e3_geometry_right.vtu b/Tests/Data/Elliptic/square_1x1_GroundWaterFlow/square_1x1_quad_1e3_geometry_right.vtu
new file mode 100644
index 0000000000000000000000000000000000000000..284adf21e4a1760e91b97c922fbf38b4f565a458
--- /dev/null
+++ b/Tests/Data/Elliptic/square_1x1_GroundWaterFlow/square_1x1_quad_1e3_geometry_right.vtu
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a155a8b533695b0c045ec6c6296f357f892a0aa56cf05a127feabc3ec9fd2261
+size 4020
diff --git a/Tests/Data/Elliptic/square_1x1_GroundWaterFlow/square_1x1_quad_1e3_volumetricsourceterm_analytical_solution.vtu b/Tests/Data/Elliptic/square_1x1_GroundWaterFlow/square_1x1_quad_1e3_volumetricsourceterm_analytical_solution.vtu
new file mode 100644
index 0000000000000000000000000000000000000000..0c91b2345ab4b415c3804114e7d13df860e26a78
--- /dev/null
+++ b/Tests/Data/Elliptic/square_1x1_GroundWaterFlow/square_1x1_quad_1e3_volumetricsourceterm_analytical_solution.vtu
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:28a49024ee8db27388b8f77d5917b22e968436e227efb4afd59c94c7afc25728
+size 40894