diff --git a/avrIOhelper/io-helper.h b/avrIOhelper/io-helper.h
index eef18cb..96b15d1 100644
--- a/avrIOhelper/io-helper.h
+++ b/avrIOhelper/io-helper.h
@@ -78,6 +78,8 @@ void ioHelperEdgeDetector(void);
 #define LED_ROT_NOTAUS_SCHRANK  BitPE3
 #define LED_PLC_OK              BitPH5
 #define LED_BUS_OK              BitPD4
+#define LED_KALTWASSER_DRAN_GR  23
+#define LED_KALTWASSER_DRAN_RT  22
 
 #define OUT_PUMPE_STARTSTOP     BitPB5
 #define OUT_PUMPE_PWM           BitPB6
@@ -112,6 +114,6 @@ void ioHelperEdgeDetector(void);
 #define IN_NOTAUS_ANLAGE        BitPinF7
 #define IN_NOTAUS_SCHRANK       BitPinK0
 
-#define IN_KLATWASSER_DRAN      BitPinF6
+#define IN_KLATWASSER_DRAN      9
 
 #endif
diff --git a/main.c b/main.c
index 1a27dff..72e714e 100644
--- a/main.c
+++ b/main.c
@@ -184,6 +184,17 @@ int main()
             timer_send_temps = millis();
             send_temperatures();
             printf("gefran: 0x%02X\n", gtf_firmware_version(5));
+
+            if(read_Input(IN_KLATWASSER_DRAN, LEVEL)){
+                send_value(&mqtt_client, "/Filamentanlage/03_Wasserbecken/state/connected", 1);
+                set_Output(LED_KALTWASSER_DRAN_GR, 1);
+                set_Output(LED_KALTWASSER_DRAN_RT, 0);
+            }
+            else{
+                send_value(&mqtt_client, "/Filamentanlage/03_Wasserbecken/state/connected", 0);
+                set_Output(LED_KALTWASSER_DRAN_GR, 0);
+                set_Output(LED_KALTWASSER_DRAN_RT, 1);
+            }
         }
 
         // send misc info