diff --git a/.strict-typing b/.strict-typing
index 958c53d07db..47f01c6cae8 100644
--- a/.strict-typing
+++ b/.strict-typing
@@ -169,6 +169,7 @@ homeassistant.components.homekit_controller.utils
 homeassistant.components.homewizard.*
 homeassistant.components.http.*
 homeassistant.components.huawei_lte.*
+homeassistant.components.hydrawise.*
 homeassistant.components.hyperion.*
 homeassistant.components.ibeacon.*
 homeassistant.components.image_processing.*
diff --git a/homeassistant/components/hydrawise/__init__.py b/homeassistant/components/hydrawise/__init__.py
index d5b69617ba9..e09cabb74fc 100644
--- a/homeassistant/components/hydrawise/__init__.py
+++ b/homeassistant/components/hydrawise/__init__.py
@@ -53,18 +53,10 @@ async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
     return True
 
 
-def _show_failure_notification(hass: HomeAssistant, error: str):
+def _show_failure_notification(hass: HomeAssistant, error: str) -> None:
     persistent_notification.create(
         hass,
         f"Error: {error}<br />You will need to restart hass after fixing.",
         title=NOTIFICATION_TITLE,
         notification_id=NOTIFICATION_ID,
     )
-
-
-class HydrawiseHub:
-    """Representation of a base Hydrawise device."""
-
-    def __init__(self, data):
-        """Initialize the entity."""
-        self.data = data
diff --git a/homeassistant/components/hydrawise/entity.py b/homeassistant/components/hydrawise/entity.py
index 405e5bc3fa3..98b66069913 100644
--- a/homeassistant/components/hydrawise/entity.py
+++ b/homeassistant/components/hydrawise/entity.py
@@ -1,15 +1,15 @@
 """Base classes for Hydrawise entities."""
+from __future__ import annotations
 
 from typing import Any
 
 from homeassistant.helpers.entity import EntityDescription
-from homeassistant.helpers.update_coordinator import (
-    CoordinatorEntity,
-    DataUpdateCoordinator,
-)
+from homeassistant.helpers.update_coordinator import CoordinatorEntity
+
+from .coordinator import HydrawiseDataUpdateCoordinator
 
 
-class HydrawiseEntity(CoordinatorEntity):
+class HydrawiseEntity(CoordinatorEntity[HydrawiseDataUpdateCoordinator]):
     """Entity class for Hydrawise devices."""
 
     _attr_attribution = "Data provided by hydrawise.com"
@@ -18,7 +18,7 @@ class HydrawiseEntity(CoordinatorEntity):
         self,
         *,
         data: dict[str, Any],
-        coordinator: DataUpdateCoordinator,
+        coordinator: HydrawiseDataUpdateCoordinator,
         description: EntityDescription,
     ) -> None:
         """Initialize the Hydrawise entity."""
@@ -28,6 +28,6 @@ class HydrawiseEntity(CoordinatorEntity):
         self._attr_name = f"{self.data['name']} {description.name}"
 
     @property
-    def extra_state_attributes(self):
+    def extra_state_attributes(self) -> dict[str, Any]:
         """Return the state attributes."""
         return {"identifier": self.data.get("relay")}
diff --git a/homeassistant/components/hydrawise/switch.py b/homeassistant/components/hydrawise/switch.py
index 71c4f8df79e..00089bb8774 100644
--- a/homeassistant/components/hydrawise/switch.py
+++ b/homeassistant/components/hydrawise/switch.py
@@ -17,7 +17,6 @@ from homeassistant.core import HomeAssistant, callback
 import homeassistant.helpers.config_validation as cv
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 from homeassistant.helpers.typing import ConfigType, DiscoveryInfoType
-from homeassistant.helpers.update_coordinator import DataUpdateCoordinator
 
 from .const import (
     ALLOWED_WATERING_TIME,
@@ -90,7 +89,7 @@ class HydrawiseSwitch(HydrawiseEntity, SwitchEntity):
         self,
         *,
         data: dict[str, Any],
-        coordinator: DataUpdateCoordinator,
+        coordinator: HydrawiseDataUpdateCoordinator,
         description: SwitchEntityDescription,
         default_watering_timer: int,
     ) -> None:
diff --git a/mypy.ini b/mypy.ini
index feb6f5a72ea..5e7d27586d1 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -1452,6 +1452,16 @@ disallow_untyped_defs = true
 warn_return_any = true
 warn_unreachable = true
 
+[mypy-homeassistant.components.hydrawise.*]
+check_untyped_defs = true
+disallow_incomplete_defs = true
+disallow_subclassing_any = true
+disallow_untyped_calls = true
+disallow_untyped_decorators = true
+disallow_untyped_defs = true
+warn_return_any = true
+warn_unreachable = true
+
 [mypy-homeassistant.components.hyperion.*]
 check_untyped_defs = true
 disallow_incomplete_defs = true