Index: firmware/App/Controllers/ConcentratePumps.c
===================================================================
diff -u -ra726311564521affd46cbbaf129bdffb22e1d58f -r7336ffd91e991f7156b01a7f15ed2afd85b62f80
--- firmware/App/Controllers/ConcentratePumps.c	(.../ConcentratePumps.c)	(revision a726311564521affd46cbbaf129bdffb22e1d58f)
+++ firmware/App/Controllers/ConcentratePumps.c	(.../ConcentratePumps.c)	(revision 7336ffd91e991f7156b01a7f15ed2afd85b62f80)
@@ -46,7 +46,7 @@
 /// Volume output per pulse.
 #define CONCENTRATE_PUMP_VOLUME_PER_PULSE                   ( CONCENTRATE_PUMP_VOLUME_PER_REV / CONCENTRATE_PUMP_PULSE_PER_REV )
 
-#define CONCENTRATE_PUMP_MONITOR_INTERVAL                   ( 500 / TASK_GENERAL_INTERVAL )                     ///< Interval (ms/task time) at which the concentrate pump is monitored.
+#define CONCENTRATE_PUMP_DATA_PUBLISH_INTERVAL              ( 500 / TASK_GENERAL_INTERVAL )                     ///< Interval (ms/task time) at which the concentrate pump is monitored.
 #define CONCENTRATE_PUMP_CONTROL_INTERVAL                   ( 500 / TASK_GENERAL_INTERVAL )                     ///< Interval (ms/task time) at which the concentrate pump is controlled.
 
 /// Enumeration of concentrate pump states.
@@ -63,6 +63,8 @@
 static BOOL isPumpOffRequested;                                         ///< Flag indicates a request to turn concentrate pumps off.
 static U32 concentratePumpControlTimerCounter;                          ///< Timer counter to perform control on concentrate pump.
 static U32 concentratePumpMonitorTimerCounter;                          ///< Timer counter to perform monitor on concentrate pump.
+/// Concentrate pump data publish interval.
+static OVERRIDE_U32_T concentratePumpDataPublishInterval = { CONCENTRATE_PUMP_DATA_PUBLISH_INTERVAL, CONCENTRATE_PUMP_DATA_PUBLISH_INTERVAL, 0, 0 };
 
 static OVERRIDE_F32_T pumpTargetSpeed[ NUM_OF_CONCENTRATE_PUMPS ];      ///< Target concentrate pumps' speed (mL/min).
 static F32 currentPumpSpeed[ NUM_OF_CONCENTRATE_PUMPS ];                ///< Current controlled concentrate pumps' speed (mL/min).
@@ -76,6 +78,7 @@
 static void stepConcentratePumpToTargetSpeed( CONCENTRATE_PUMPS_T pumpId );
 static CONCENTRATE_PUMP_STATE_T handleConcentratePumpOnState( void );
 static F32 getConcentratePumpTargetSpeed( CONCENTRATE_PUMPS_T pumpId );
+static U32 getPublishConcentratePumpDataInterval( void );
 
 /*********************************************************************//**
  * @brief
@@ -104,7 +107,7 @@
  *************************************************************************/
 void execConcentratePumpMonitor( void )
 {
-    if ( ++concentratePumpMonitorTimerCounter >= CONCENTRATE_PUMP_CONTROL_INTERVAL )
+    if ( ++concentratePumpMonitorTimerCounter >= getPublishConcentratePumpDataInterval() )
     {
         concentratePumpMonitorTimerCounter = 0U;
 
@@ -349,14 +352,81 @@
     return result;
 }
 
+/*********************************************************************//**
+ * @brief
+ * The getPublishConcentratePumpDataInterval function gets the concentrate pump
+ * data publication interval.
+ * @details Inputs: concentratePumpDataPublishInterval
+ * @details Outputs: none
+ * @return the current concentrate pump data publication interval (in ms).
+ *************************************************************************/
+static U32 getPublishConcentratePumpDataInterval( void )
+{
+    U32 result = concentratePumpDataPublishInterval.data;
 
+    if ( OVERRIDE_KEY == concentratePumpDataPublishInterval.override )
+    {
+        result = concentratePumpDataPublishInterval.ovData;
+    }
+
+    return result;
+}
+
+
 /*************************************************************************
  *                       TEST SUPPORT FUNCTIONS
  *************************************************************************/
 
 
 /*********************************************************************//**
  * @brief
+ * The testSetConcentratePumpDataPublishIntervalOverride function overrides the
+ * concentrate pump data publish interval.
+ * @details Inputs: none
+ * @details Outputs: concentratePumpDataPublishInterval
+ * @param value override concentrate pump data publish interval with (in ms)
+ * @return TRUE if override successful, FALSE if not
+ *************************************************************************/
+BOOL testSetConcentratePumpDataPublishIntervalOverride( U32 value )
+{
+    BOOL result = FALSE;
+
+    if ( TRUE == isTestingActivated() )
+    {
+        U32 intvl = value / TASK_GENERAL_INTERVAL;
+
+        result = TRUE;
+        concentratePumpDataPublishInterval.ovData = intvl;
+        concentratePumpDataPublishInterval.override = OVERRIDE_KEY;
+    }
+
+    return result;
+}
+
+/*********************************************************************//**
+ * @brief
+ * The testResetConcentratePumpDataPublishIntervalOverride function resets the
+ * override of the concentrate pump data publish interval.
+ * @details Inputs: none
+ * @details Outputs: concentratePumpDataPublishInterval
+ * @return TRUE if override reset successful, FALSE if not
+ *************************************************************************/
+BOOL testResetConcentratePumpDataPublishIntervalOverride( void )
+{
+    BOOL result = FALSE;
+
+    if ( TRUE == isTestingActivated() )
+    {
+        result = TRUE;
+        concentratePumpDataPublishInterval.override = OVERRIDE_RESET;
+        concentratePumpDataPublishInterval.ovData = concentratePumpDataPublishInterval.ovInitData;
+    }
+
+    return result;
+}
+
+/*********************************************************************//**
+ * @brief
  * The testSetConcentratePumpTargetSpeedOverride function overrides the target
  * speed value of given concentrate pump id.
  * @details Inputs: none
Index: firmware/App/Controllers/ConcentratePumps.h
===================================================================
diff -u -ra726311564521affd46cbbaf129bdffb22e1d58f -r7336ffd91e991f7156b01a7f15ed2afd85b62f80
--- firmware/App/Controllers/ConcentratePumps.h	(.../ConcentratePumps.h)	(revision a726311564521affd46cbbaf129bdffb22e1d58f)
+++ firmware/App/Controllers/ConcentratePumps.h	(.../ConcentratePumps.h)	(revision 7336ffd91e991f7156b01a7f15ed2afd85b62f80)
@@ -58,6 +58,8 @@
 
 void setConcentratePumpTargetSpeed( CONCENTRATE_PUMPS_T pumpId, F32 targetSpeed_ml_min );
 
+BOOL testSetConcentratePumpDataPublishIntervalOverride( U32 value );
+BOOL testResetConcentratePumpDataPublishIntervalOverride( void );
 BOOL testSetConcentratePumpTargetSpeedOverride( U32 pumpId, F32 value );
 BOOL testResetConcentratePumpTargetSpeedOverride( U32 pumpId );
 
Index: firmware/App/Services/SystemComm.c
===================================================================
diff -u -rd110e0ed1d67e15d968a64da61c2535965ed1321 -r7336ffd91e991f7156b01a7f15ed2afd85b62f80
--- firmware/App/Services/SystemComm.c	(.../SystemComm.c)	(revision d110e0ed1d67e15d968a64da61c2535965ed1321)
+++ firmware/App/Services/SystemComm.c	(.../SystemComm.c)	(revision 7336ffd91e991f7156b01a7f15ed2afd85b62f80)
@@ -1160,6 +1160,10 @@
                 handleConcentratePumpStateChangeRequest( message );
                 break;
 
+            case MSG_ID_CONCENTRATE_PUMP_PUBLISH_INTERVAL_OVERRIDE:
+                handleConcentratePumpPublishIntervalOverride( message );
+                break;
+
             default:
                 // TODO - unrecognized message ID received - ignore
                 break;
Index: firmware/App/Services/SystemCommMessages.c
===================================================================
diff -u -rd110e0ed1d67e15d968a64da61c2535965ed1321 -r7336ffd91e991f7156b01a7f15ed2afd85b62f80
--- firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision d110e0ed1d67e15d968a64da61c2535965ed1321)
+++ firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision 7336ffd91e991f7156b01a7f15ed2afd85b62f80)
@@ -1993,4 +1993,36 @@
     sendTestAckResponseMsg( (MSG_ID_T)message->hdr.msgID, result );
 }
 
+/*********************************************************************//**
+ * @brief
+ * The handleConcentratePumpPublishIntervalOverride function handles a request
+ * to override a concentrate pump's publish interval value.
+ * @details Inputs: none
+ * @details Outputs: message handled
+ * @param message a pointer to the message to handle
+ * @return none
+ *************************************************************************/
+void handleConcentratePumpPublishIntervalOverride( MESSAGE_T *message )
+{
+    TEST_OVERRIDE_PAYLOAD_T payload;
+    BOOL result = FALSE;
+
+    // verify payload length
+    if ( sizeof( TEST_OVERRIDE_PAYLOAD_T ) == message->hdr.payloadLen )
+    {
+        memcpy( &payload, message->payload, sizeof( TEST_OVERRIDE_PAYLOAD_T ) );
+        if ( FALSE == payload.reset )
+        {
+            result = testSetConcentratePumpDataPublishIntervalOverride( payload.state.u32 );
+        }
+        else
+        {
+            result = testResetConcentratePumpDataPublishIntervalOverride();
+        }
+    }
+
+    // respond to request
+    sendTestAckResponseMsg( (MSG_ID_T)message->hdr.msgID, result );
+}
+
 /**@}*/
Index: firmware/App/Services/SystemCommMessages.h
===================================================================
diff -u -rd110e0ed1d67e15d968a64da61c2535965ed1321 -r7336ffd91e991f7156b01a7f15ed2afd85b62f80
--- firmware/App/Services/SystemCommMessages.h	(.../SystemCommMessages.h)	(revision d110e0ed1d67e15d968a64da61c2535965ed1321)
+++ firmware/App/Services/SystemCommMessages.h	(.../SystemCommMessages.h)	(revision 7336ffd91e991f7156b01a7f15ed2afd85b62f80)
@@ -209,6 +209,9 @@
 // MSG_ID_CONCENTRATE_PUMP_STATE_CHANGE_REQUEST
 void handleConcentratePumpStateChangeRequest( MESSAGE_T *message );
 
+// MSG_ID_CONCENTRATE_PUMP_PUBLISH_INTERVAL_OVERRIDE
+void handleConcentratePumpPublishIntervalOverride( MESSAGE_T *message );
+
 /**@}*/
 
 #endif