diff --git a/pkgs/development/python-modules/lhpapi/default.nix b/pkgs/development/python-modules/lhpapi/default.nix
new file mode 100644
index 000000000000..04cde62792f9
--- /dev/null
+++ b/pkgs/development/python-modules/lhpapi/default.nix
@@ -0,0 +1,41 @@
+{
+  lib,
+  beautifulsoup4,
+  lxml,
+  hatchling,
+  requests,
+  tzdata,
+  buildPythonPackage,
+  fetchFromGitHub,
+}:
+
+buildPythonPackage rec {
+  pname = "lhpapi";
+  version = "1.0.10";
+  pyproject = true;
+
+  src = fetchFromGitHub {
+    owner = "stephan192";
+    repo = "lhpapi";
+    tag = "v${version}";
+    hash = "sha256-Q9X1STaWWbWWy8wmCQ3Cx+z19+X3EcGl0u/Mmc49rAM=";
+  };
+
+  dependencies = [
+    beautifulsoup4
+    lxml
+    requests
+    tzdata
+  ];
+
+  build-system = [ hatchling ];
+
+  pythonImportsCheck = [ "lhpapi" ];
+
+  meta = {
+    description = "API to retrieve data from the Länderübergreifendes Hochwasser Portal (LHP)";
+    homepage = "https://github.com/stephan192/lhpapi";
+    license = lib.licenses.mit;
+    maintainers = with lib.maintainers; [ _9R ];
+  };
+}
diff --git a/pkgs/servers/home-assistant/custom-components/hochwasserportal/package.nix b/pkgs/servers/home-assistant/custom-components/hochwasserportal/package.nix
new file mode 100644
index 000000000000..f5a1dc628e23
--- /dev/null
+++ b/pkgs/servers/home-assistant/custom-components/hochwasserportal/package.nix
@@ -0,0 +1,38 @@
+{
+  lib,
+  buildHomeAssistantComponent,
+  fetchFromGitHub,
+  pytest-homeassistant-custom-component,
+
+  # dependency
+  lhpapi,
+}:
+
+buildHomeAssistantComponent rec {
+  owner = "stephan192";
+  domain = "hochwasserportal";
+  version = "1.0.8";
+
+  src = fetchFromGitHub {
+    owner = "stephan192";
+    repo = "hochwasserportal";
+    tag = "v${version}";
+    hash = "sha256-q2usHeWcx/1UrM7MQ156SFy8cFIiCcsmIr6721hzSLI=";
+  };
+
+  dependencies = [
+    lhpapi
+  ];
+
+  nativeCheckInputs = [
+    pytest-homeassistant-custom-component
+  ];
+
+  meta = {
+    changelog = "https://github.com/stephan192/hochwasserportal/releases/tag/${version}";
+    description = "Home Assistant integration for Länderübergreifendes Hochwasser Portal";
+    homepage = "https://github.com/stephan192/hochwasserportal";
+    maintainers = with lib.maintainers; [ _9R ];
+    license = lib.licenses.mit;
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 78a390a9fdd2..23b5e9321042 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -9190,6 +9190,8 @@ self: super: with self; {
 
   lhapdf = toPythonModule (pkgs.lhapdf.override { python3 = python; });
 
+  lhpapi = callPackage ../development/python-modules/lhpapi { };
+
   lib4package = callPackage ../development/python-modules/lib4package { };
 
   lib4sbom = callPackage ../development/python-modules/lib4sbom { };