diff --git a/src/Model/Pollutants/Pollutants.py b/src/Model/Pollutants/Pollutants.py
index 03136e74..89aac30d 100644
--- a/src/Model/Pollutants/Pollutants.py
+++ b/src/Model/Pollutants/Pollutants.py
@@ -354,6 +354,7 @@ class Pollutants(SQLSubModel):
           CREATE TABLE pollutants{ext}(
             {cls.create_db_add_pamhyr_id()},
             deleted BOOLEAN NOT NULL DEFAULT FALSE,
+            enabled BOOLEAN NOT NULL DEFAULT TRUE,
             name TEXT NOT NULL,
             {Scenario.create_db_add_scenario()},
             {Scenario.create_db_add_scenario_fk()}
@@ -378,6 +379,14 @@ class Pollutants(SQLSubModel):
         if major == "0" and int(minor) < 2:
             if not created:
                 cls._db_update_to_0_2_0(execute, data)
+        
+        if major == "0" and minor == "2":
+            if int(release) < 5:
+                execute(f"ALTER TABLE pollutants " +
+                        f"ADD COLUMN enabled BOOLEAN NOT NULL DEFAULT TRUE")
+
+                # cls._db_update_to_0_2_5(execute, data)
+                # # created = True
 
         if not created:
             return cls._update_submodel(execute, version, data)
@@ -416,7 +425,7 @@ class Pollutants(SQLSubModel):
             return new
 
         table = execute(
-            "SELECT pamhyr_id, deleted, name, scenario FROM pollutants " +
+            "SELECT pamhyr_id, deleted, enabled, name, scenario FROM pollutants " +
             f"WHERE scenario = {scenario.id} " +
             f"AND pamhyr_id NOT IN ({', '.join(map(str, loaded))})"
         )
@@ -427,6 +436,7 @@ class Pollutants(SQLSubModel):
 
                 pid = next(it)
                 deleted = (next(it) == 1)
+                enabled = (next(it) == 1)
                 name = next(it)
                 owner_scenario = next(it)
 
@@ -437,6 +447,8 @@ class Pollutants(SQLSubModel):
                 )
                 if deleted:
                     new_pollutant.set_as_deleted()
+                if not enabled:
+                    new_pollutant.enabled = False
 
                 data["pollutant"] = new_pollutant
                 new_pollutant._data = PollutantCharacteristics._db_load(
@@ -478,9 +490,10 @@ class Pollutants(SQLSubModel):
 
         execute(
             "INSERT INTO " +
-            "pollutants(pamhyr_id, deleted, name, scenario) " +
+            "pollutants(pamhyr_id, deleted, enabled, name, scenario) " +
             "VALUES (" +
             f"{self.id}, {self._db_format(self.is_deleted())}, " +
+            f"{self._db_format(self._enabled)}, " +
             f"'{self._db_format(self._name)}', " +
             f"{self._status.scenario_id}" +
             ")"
diff --git a/src/Model/Study.py b/src/Model/Study.py
index 9816dcd4..92028c67 100644
--- a/src/Model/Study.py
+++ b/src/Model/Study.py
@@ -46,7 +46,7 @@ logger = logging.getLogger()
 
 
 class Study(SQLModel):
-    _version = "0.2.4"
+    _version = "0.2.5"
 
     _sub_classes = [
         Scenario,