diff --git a/homeassistant/components/water_heater/strings.json b/homeassistant/components/water_heater/strings.json
index 5ddb61d28b0387..6991d371bd36bb 100644
--- a/homeassistant/components/water_heater/strings.json
+++ b/homeassistant/components/water_heater/strings.json
@@ -16,6 +16,15 @@
         "high_demand": "High Demand",
         "heat_pump": "Heat Pump",
         "performance": "Performance"
+      },
+      "state_attributes": {
+        "away_mode": {
+          "name": "Away mode",
+          "state": {
+            "off": "Off",
+            "on": "On"
+          }
+        }
       }
     }
   },