Index: Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/DesignWaterLevelLocationsView.cs
===================================================================
diff -u -rd8c4ceab914f43e5cfab5f0472477d44ff5fc81f -rdf02e0f3f8fe431d194cf440d5bc39d1f2497b59
--- Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/DesignWaterLevelLocationsView.cs	(.../DesignWaterLevelLocationsView.cs)	(revision d8c4ceab914f43e5cfab5f0472477d44ff5fc81f)
+++ Ringtoets/Integration/src/Ringtoets.Integration.Forms/Views/DesignWaterLevelLocationsView.cs	(.../DesignWaterLevelLocationsView.cs)	(revision df02e0f3f8fe431d194cf440d5bc39d1f2497b59)
@@ -37,27 +37,31 @@
     /// </summary>
     public partial class DesignWaterLevelLocationsView : HydraulicBoundaryLocationsView
     {
-        private readonly double norm;
+        private readonly Func<double> getNormFunc;
         private readonly DesignWaterLevelCalculationMessageProvider messageProvider;
 
         /// <summary>
         /// Creates a new instance of <see cref="DesignWaterLevelLocationsView"/>.
         /// </summary>
         /// <param name="locations">The locations to show in the view.</param>
         /// <param name="assessmentSection">The assessment section which the locations belong to.</param>
-        /// <param name="norm">The norm to use during calculations.</param>
-        /// <exception cref="ArgumentNullException">Thrown when <paramref name="locations"/> or 
-        /// <paramref name="assessmentSection"/> is <c>null</c>.</exception>
+        /// <param name="getNormFunc"><see cref="Func{TResult}"/> for getting the norm to use during calculations.</param>
+        /// <exception cref="ArgumentNullException">Thrown when any input parameter is <c>null</c>.</exception>
         public DesignWaterLevelLocationsView(ObservableList<HydraulicBoundaryLocation> locations,
                                              IAssessmentSection assessmentSection,
-                                             double norm)
+                                             Func<double> getNormFunc)
             : base(locations, assessmentSection)
         {
+            if (getNormFunc == null)
+            {
+                throw new ArgumentNullException(nameof(getNormFunc));
+            }
+
             InitializeComponent();
 
             messageProvider = new DesignWaterLevelCalculationMessageProvider();
 
-            this.norm = norm;
+            this.getNormFunc = getNormFunc;
         }
 
         protected override object CreateSelectedItemFromCurrentRow()
@@ -75,7 +79,7 @@
                                                              AssessmentSection.HydraulicBoundaryDatabase.EffectivePreprocessorDirectory(),
                                                              locations,
                                                              hbl => hbl.DesignWaterLevelCalculation,
-                                                             norm,
+                                                             getNormFunc(),
                                                              messageProvider);
         }
 
Index: Ringtoets/Integration/test/Ringtoets.Integration.Forms.Test/Views/DesignWaterLevelLocationsViewTest.cs
===================================================================
diff -u -r384159a25f7e4598081e23c92fde39578b078434 -rdf02e0f3f8fe431d194cf440d5bc39d1f2497b59
--- Ringtoets/Integration/test/Ringtoets.Integration.Forms.Test/Views/DesignWaterLevelLocationsViewTest.cs	(.../DesignWaterLevelLocationsViewTest.cs)	(revision 384159a25f7e4598081e23c92fde39578b078434)
+++ Ringtoets/Integration/test/Ringtoets.Integration.Forms.Test/Views/DesignWaterLevelLocationsViewTest.cs	(.../DesignWaterLevelLocationsViewTest.cs)	(revision df02e0f3f8fe431d194cf440d5bc39d1f2497b59)
@@ -19,6 +19,7 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
+using System;
 using System.Collections.Generic;
 using System.Globalization;
 using System.Linq;
@@ -72,6 +73,21 @@
         }
 
         [Test]
+        public void Constructor_GetNormFuncNull_ThrowsArgumentNullException()
+        {
+            // Setup
+            IAssessmentSection assessmentSection = AssessmentSectionHelper.CreateAssessmentSectionStub(mockRepository);
+            mockRepository.ReplayAll();
+
+            // Call
+            TestDelegate test = () => new DesignWaterLevelLocationsView(new ObservableList<HydraulicBoundaryLocation>(), assessmentSection, null);
+
+            // Assert
+            var exception = Assert.Throws<ArgumentNullException>(test);
+            Assert.AreEqual("getNormFunc", exception.ParamName);
+        }
+
+        [Test]
         public void Constructor_ExpectedValues()
         {
             // Setup