diff --git a/starlette/datastructures.py b/starlette/datastructures.py
index 67e3d057..c9c3fbb0 100644
--- a/starlette/datastructures.py
+++ b/starlette/datastructures.py
@@ -3,7 +3,7 @@ import typing
 from collections import namedtuple
 from collections.abc import Sequence
 from shlex import shlex
-from urllib.parse import ParseResult, parse_qsl, urlencode, urlparse
+from urllib.parse import SplitResult, parse_qsl, urlencode, urlsplit
 
 from starlette.concurrency import run_in_threadpool
 from starlette.types import Scope
@@ -50,9 +50,9 @@ class URL:
         self._url = url
 
     @property
-    def components(self) -> ParseResult:
+    def components(self) -> SplitResult:
         if not hasattr(self, "_components"):
-            self._components = urlparse(self._url)
+            self._components = urlsplit(self._url)
         return self._components
 
     @property
@@ -67,10 +67,6 @@ class URL:
     def path(self) -> str:
         return self.components.path
 
-    @property
-    def params(self) -> str:
-        return self.components.params
-
     @property
     def query(self) -> str:
         return self.components.query
diff --git a/starlette/testclient.py b/starlette/testclient.py
index daac0700..6e5749ca 100644
--- a/starlette/testclient.py
+++ b/starlette/testclient.py
@@ -6,7 +6,7 @@ import queue
 import threading
 import types
 import typing
-from urllib.parse import unquote, urljoin, urlparse
+from urllib.parse import unquote, urljoin, urlsplit
 
 import requests
 
@@ -67,9 +67,7 @@ class _ASGIAdapter(requests.adapters.HTTPAdapter):
     def send(  # type: ignore
         self, request: requests.PreparedRequest, *args: typing.Any, **kwargs: typing.Any
     ) -> requests.Response:
-        scheme, netloc, path, params, query, fragement = urlparse(  # type: ignore
-            request.url
-        )
+        scheme, netloc, path, query, fragement = urlsplit(request.url)  # type: ignore
 
         default_port = {"http": 80, "ws": 80, "https": 443, "wss": 443}[scheme]
 
diff --git a/tests/test_datastructures.py b/tests/test_datastructures.py
index bcf15359..c811bac9 100644
--- a/tests/test_datastructures.py
+++ b/tests/test_datastructures.py
@@ -21,7 +21,6 @@ def test_url():
     assert u.password is None
     assert u.path == "/path/to/somewhere"
     assert u.query == "abc=123"
-    assert u.params == ""
     assert u.fragment == "anchor"
 
     new = u.replace(scheme="http")