diff --git a/tests/test_sewer.py b/tests/test_sewer.py
index 0ca4a289..3299c789 100644
--- a/tests/test_sewer.py
+++ b/tests/test_sewer.py
@@ -91,6 +91,26 @@ def test_make_discharge(self):
         d3 = {"volume": 7, "phosphate": 7 * 2 / 9, "temperature": 10}
         self.assertDictAlmostEqual(d3, sewer.sewer_tank.storage, 15)
 
+    def test_sewer_overrides(self):
+        sewer = Sewer(name="", capacity=10, pipe_timearea={0: 0.3, 1: 0.7})
+        sewer.apply_overrides(
+            {
+                "capacity": 3,
+                "chamber_area": 2,
+                "chamber_floor": 3.5,
+                "pipe_time": 8.4,
+                "pipe_timearea": {0: 0.5, 1: 0.5},
+            }
+        )
+        self.assertEqual(sewer.capacity, 3)
+        self.assertEqual(sewer.sewer_tank.capacity, 3)
+        self.assertEqual(sewer.chamber_area, 2)
+        self.assertEqual(sewer.sewer_tank.area, 2)
+        self.assertEqual(sewer.chamber_floor, 3.5)
+        self.assertEqual(sewer.sewer_tank.datum, 3.5)
+        self.assertEqual(sewer.pipe_time, 8.4)
+        self.assertEqual(sewer.pipe_timearea, {0: 0.5, 1: 0.5})
+
 
 if __name__ == "__main__":
     unittest.main()
diff --git a/wsimod/nodes/sewer.py b/wsimod/nodes/sewer.py
index 545495c1..b49546be 100644
--- a/wsimod/nodes/sewer.py
+++ b/wsimod/nodes/sewer.py
@@ -4,6 +4,8 @@
 @author: bdobson
 Converted to totals on 2022-05-03
 """
+from typing import Any, Dict
+
 from wsimod.core import constants
 from wsimod.nodes.nodes import Node
 from wsimod.nodes.tanks import QueueTank
@@ -113,6 +115,33 @@ def __init__(
         # Mass balance
         self.mass_balance_ds.append(lambda: self.sewer_tank.ds())
 
+    def apply_overrides(self, overrides: Dict[str, Any] = {}):
+        """Apply overrides to the sewer.
+
+        Enables a user to override any of the following parameters:
+        capacity, chamber_area, chamber_floor, pipe_time, pipe_timearea.
+
+        Args:
+            overrides (dict, optional): Dictionary of overrides. Defaults to {}.
+        """
+        self.capacity = overrides.pop("capacity", self.capacity)
+        self.chamber_area = overrides.pop("chamber_area", self.chamber_area)
+        self.chamber_floor = overrides.pop("chamber_floor", self.chamber_floor)
+        self.sewer_tank.capacity = self.capacity
+        self.sewer_tank.area = self.chamber_area
+        self.sewer_tank.datum = self.chamber_floor
+
+        self.pipe_time = overrides.pop("pipe_time", self.pipe_time)
+        if "pipe_timearea" in overrides.keys():
+            pipe_timearea_sum = sum([v for k, v in overrides["pipe_timearea"].items()])
+            if pipe_timearea_sum != 1:
+                print(
+                    "ERROR: the sum of pipe_timearea in the overrides dict \
+			is not equal to 1, please check it"
+                )
+        self.pipe_timearea = overrides.pop("pipe_timearea", self.pipe_timearea)
+        super().apply_overrides(overrides)
+
     def push_check_sewer(self, vqip=None):
         """Generic push check, simply looks at excess.