Index: firmware/App/Modes/ModeDrain.c
===================================================================
diff -u -ra7bf3ca23ea37a61000379facae628a31b3ecc59 -r7965487decd9984a22f4d9ec56d1fb2590d1583b
--- firmware/App/Modes/ModeDrain.c	(.../ModeDrain.c)	(revision a7bf3ca23ea37a61000379facae628a31b3ecc59)
+++ firmware/App/Modes/ModeDrain.c	(.../ModeDrain.c)	(revision 7965487decd9984a22f4d9ec56d1fb2590d1583b)
@@ -21,6 +21,7 @@
 #include "OperationModes.h"
 #include "Reservoirs.h"
 #include "Valves.h"
+#include "ConductivitySensors.h"
 
 /**
  *  @addtogroup DGDrainMode
@@ -81,6 +82,10 @@
  *************************************************************************/
 U32 execDrainMode( void )
 {
+
+    // check inlet water conductivity
+    checkWaterConductivity( getConductivityValue(CONDUCITIVYSENSORS_CPI_SENSOR), drainState );
+
     // execute current drain state
     switch ( drainState )
     {