Index: firmware/App/Monitors/WaterQualityMonitor.h
===================================================================
diff -u -r830213bc6dcc1a684610caf78c79d55f2cb41e93 -r47a7b0fce13cf38919932a8662c378f4f6a8b9f3
--- firmware/App/Monitors/WaterQualityMonitor.h	(.../WaterQualityMonitor.h)	(revision 830213bc6dcc1a684610caf78c79d55f2cb41e93)
+++ firmware/App/Monitors/WaterQualityMonitor.h	(.../WaterQualityMonitor.h)	(revision 47a7b0fce13cf38919932a8662c378f4f6a8b9f3)
@@ -8,7 +8,7 @@
 * @file    WaterQualityMonitor.h
 *
 * @author  (last)      “rkallala”
-* @date    (last)      09-Dec-2025
+* @date    (last)      15-Jan-2026
 *
 * @author  (original)  Michael Garthwaite
 * @date    (original)  08-Sep-2025
@@ -32,6 +32,14 @@
 
 // ********** public definitions **********
 
+#pragma pack(push, 1)
+//Current calculated RO pump duty cycle data struct.
+typedef struct
+{
+    F32 curentCalculatedDutyCycle;        ///< Current calculate RO pump duty cycle based on P13 pressure
+} CURRENT_RO_PUMP_CAL_DUTY_CYCLE_DATA_T;
+#pragma pack(pop)
+
 // ********** public definitions **********
 
 void initWaterQualityMonitor( void );
@@ -46,5 +54,9 @@
 void checkRORejectionRatio( void );
 void checkPermeateHighFlow( void );
 void checkPermeateLowFlow( void );
+void checkRODutyCycle( void );
+void checkROInletPressure( void );
 
+BOOL testROGetCurrentCalculatedDutyCycle( MESSAGE_T *message );
+
 #endif