diff --git a/homeassistant/components/flo/sensor.py b/homeassistant/components/flo/sensor.py
index 9f793b749e4..9cb070a1c62 100644
--- a/homeassistant/components/flo/sensor.py
+++ b/homeassistant/components/flo/sensor.py
@@ -71,6 +71,7 @@ class FloDailyUsageSensor(FloEntity, SensorEntity):
     _attr_icon = WATER_ICON
     _attr_native_unit_of_measurement = VOLUME_GALLONS
     _attr_state_class: SensorStateClass = SensorStateClass.TOTAL_INCREASING
+    _attr_device_class = SensorDeviceClass.WATER
 
     def __init__(self, device):
         """Initialize the daily water usage sensor."""
diff --git a/homeassistant/components/homewizard/sensor.py b/homeassistant/components/homewizard/sensor.py
index 6fc1d38ec12..4baaff8835d 100644
--- a/homeassistant/components/homewizard/sensor.py
+++ b/homeassistant/components/homewizard/sensor.py
@@ -131,7 +131,7 @@ SENSORS: Final[tuple[SensorEntityDescription, ...]] = (
         name="Total water usage",
         native_unit_of_measurement=VOLUME_CUBIC_METERS,
         icon="mdi:gauge",
-        device_class=SensorDeviceClass.VOLUME,
+        device_class=SensorDeviceClass.WATER,
         state_class=SensorStateClass.TOTAL_INCREASING,
     ),
 )
diff --git a/homeassistant/components/p1_monitor/sensor.py b/homeassistant/components/p1_monitor/sensor.py
index e55c8dacea5..8a1c9d68b5a 100644
--- a/homeassistant/components/p1_monitor/sensor.py
+++ b/homeassistant/components/p1_monitor/sensor.py
@@ -222,13 +222,14 @@ SENSORS_WATERMETER: tuple[SensorEntityDescription, ...] = (
         name="Consumption Day",
         state_class=SensorStateClass.TOTAL_INCREASING,
         native_unit_of_measurement=VOLUME_LITERS,
-        device_class=SensorDeviceClass.VOLUME,
+        device_class=SensorDeviceClass.WATER,
     ),
     SensorEntityDescription(
         key="consumption_total",
         name="Consumption Total",
         state_class=SensorStateClass.TOTAL_INCREASING,
         native_unit_of_measurement=VOLUME_CUBIC_METERS,
+        device_class=SensorDeviceClass.WATER,
     ),
     SensorEntityDescription(
         key="pulse_count",
diff --git a/homeassistant/components/toon/sensor.py b/homeassistant/components/toon/sensor.py
index 371672e184e..9178cc6c01a 100644
--- a/homeassistant/components/toon/sensor.py
+++ b/homeassistant/components/toon/sensor.py
@@ -316,6 +316,7 @@ SENSOR_ENTITIES: tuple[ToonSensorEntityDescription, ...] = (
         icon="mdi:water",
         entity_registry_enabled_default=False,
         cls=ToonWaterMeterDeviceSensor,
+        device_class=SensorDeviceClass.WATER,
     ),
     ToonSensorEntityDescription(
         key="water_daily_usage",
@@ -326,6 +327,7 @@ SENSOR_ENTITIES: tuple[ToonSensorEntityDescription, ...] = (
         icon="mdi:water",
         entity_registry_enabled_default=False,
         cls=ToonWaterMeterDeviceSensor,
+        device_class=SensorDeviceClass.WATER,
     ),
     ToonSensorEntityDescription(
         key="water_meter_reading",
@@ -337,6 +339,7 @@ SENSOR_ENTITIES: tuple[ToonSensorEntityDescription, ...] = (
         entity_registry_enabled_default=False,
         state_class=SensorStateClass.TOTAL_INCREASING,
         cls=ToonWaterMeterDeviceSensor,
+        device_class=SensorDeviceClass.WATER,
     ),
     ToonSensorEntityDescription(
         key="water_value",
diff --git a/tests/components/homewizard/test_sensor.py b/tests/components/homewizard/test_sensor.py
index c8238c75643..d405a713edb 100644
--- a/tests/components/homewizard/test_sensor.py
+++ b/tests/components/homewizard/test_sensor.py
@@ -609,7 +609,7 @@ async def test_sensor_entity_total_liters(
 
     assert state.attributes.get(ATTR_STATE_CLASS) == SensorStateClass.TOTAL_INCREASING
     assert state.attributes.get(ATTR_UNIT_OF_MEASUREMENT) == VOLUME_CUBIC_METERS
-    assert state.attributes.get(ATTR_DEVICE_CLASS) == SensorDeviceClass.VOLUME
+    assert state.attributes.get(ATTR_DEVICE_CLASS) == SensorDeviceClass.WATER
     assert state.attributes.get(ATTR_ICON) == "mdi:gauge"