diff --git a/.changelog/13679.txt b/.changelog/13679.txt
new file mode 100644
index 000000000..2cef210de
--- /dev/null
+++ b/.changelog/13679.txt
@@ -0,0 +1,3 @@
+```release-note:improvement
+ui: Namespace filter query paramters are now isolated by route
+```
diff --git a/ui/app/controllers/csi/volumes/index.js b/ui/app/controllers/csi/volumes/index.js
index 43c30a226..7adee636f 100644
--- a/ui/app/controllers/csi/volumes/index.js
+++ b/ui/app/controllers/csi/volumes/index.js
@@ -1,4 +1,3 @@
-import { set } from '@ember/object';
 import { inject as service } from '@ember/service';
 import { action, computed } from '@ember/object';
 import { alias, readOnly } from '@ember/object/computed';
@@ -64,7 +63,7 @@ export default class IndexController extends Controller.extend(
 
   fuzzySearchEnabled = true;
 
-  @computed('qpNamespace', 'model.namespaces.[]', 'system.cachedNamespace')
+  @computed('qpNamespace', 'model.namespaces.[]')
   get optionsNamespaces() {
     const availableNamespaces = this.model.namespaces.map((namespace) => ({
       key: namespace.name,
@@ -81,7 +80,7 @@ export default class IndexController extends Controller.extend(
       // eslint-disable-next-line ember/no-incorrect-calls-with-inline-anonymous-functions
       scheduleOnce('actions', () => {
         // eslint-disable-next-line ember/no-side-effects
-        this.set('qpNamespace', this.system.cachedNamespace || '*');
+        this.set('qpNamespace', '*');
       });
     }
 
@@ -101,11 +100,6 @@ export default class IndexController extends Controller.extend(
   @alias('listSorted') listToSearch;
   @alias('listSearched') sortedVolumes;
 
-  @action
-  cacheNamespace(namespace) {
-    set(this, 'system.cachedNamespace', namespace);
-  }
-
   setFacetQueryParam(queryParam, selection) {
     this.set(queryParam, serialize(selection));
   }
diff --git a/ui/app/controllers/jobs/index.js b/ui/app/controllers/jobs/index.js
index f47792c03..0332a9dc9 100644
--- a/ui/app/controllers/jobs/index.js
+++ b/ui/app/controllers/jobs/index.js
@@ -1,9 +1,8 @@
 /* eslint-disable ember/no-incorrect-calls-with-inline-anonymous-functions */
-import { set } from '@ember/object';
 import { inject as service } from '@ember/service';
 import { alias, readOnly } from '@ember/object/computed';
 import Controller from '@ember/controller';
-import { action, computed } from '@ember/object';
+import { computed } from '@ember/object';
 import { scheduleOnce } from '@ember/runloop';
 import intersection from 'lodash.intersection';
 import Sortable from 'nomad-ui/mixins/sortable';
@@ -165,7 +164,7 @@ export default class IndexController extends Controller.extend(
     }));
   }
 
-  @computed('qpNamespace', 'model.namespaces.[]', 'system.cachedNamespace')
+  @computed('qpNamespace', 'model.namespaces.[]')
   get optionsNamespaces() {
     const availableNamespaces = this.model.namespaces.map((namespace) => ({
       key: namespace.name,
@@ -181,7 +180,7 @@ export default class IndexController extends Controller.extend(
     if (!availableNamespaces.mapBy('key').includes(this.qpNamespace)) {
       scheduleOnce('actions', () => {
         // eslint-disable-next-line ember/no-side-effects
-        this.set('qpNamespace', this.system.cachedNamespace || '*');
+        this.set('qpNamespace', '*');
       });
     }
 
@@ -252,11 +251,6 @@ export default class IndexController extends Controller.extend(
 
   isShowingDeploymentDetails = false;
 
-  @action
-  cacheNamespace(namespace) {
-    set(this, 'system.cachedNamespace', namespace);
-  }
-
   setFacetQueryParam(queryParam, selection) {
     this.set(queryParam, serialize(selection));
   }
diff --git a/ui/app/controllers/optimize.js b/ui/app/controllers/optimize.js
index 53331cc8f..f249c73cd 100644
--- a/ui/app/controllers/optimize.js
+++ b/ui/app/controllers/optimize.js
@@ -87,7 +87,7 @@ export default class OptimizeController extends Controller {
     if (!availableNamespaces.mapBy('key').includes(this.qpNamespace)) {
       scheduleOnce('actions', () => {
         // eslint-disable-next-line ember/no-side-effects
-        this.qpNamespace = this.system.cachedNamespace || '*';
+        this.qpNamespace = '*';
       });
     }
 
@@ -247,11 +247,6 @@ export default class OptimizeController extends Controller {
     });
   }
 
-  @action
-  cacheNamespace(namespace) {
-    this.system.cachedNamespace = namespace;
-  }
-
   @action
   setFacetQueryParam(queryParam, selection) {
     this[queryParam] = serialize(selection);
diff --git a/ui/app/services/system.js b/ui/app/services/system.js
index 1859c701e..a9df19860 100644
--- a/ui/app/services/system.js
+++ b/ui/app/services/system.js
@@ -1,6 +1,5 @@
 import Service, { inject as service } from '@ember/service';
 import { computed } from '@ember/object';
-import { tracked } from '@glimmer/tracking';
 import { alias } from '@ember/object/computed';
 import PromiseObject from '../utils/classes/promise-object';
 import PromiseArray from '../utils/classes/promise-array';
@@ -132,12 +131,6 @@ export default class SystemService extends Service {
     );
   }
 
-  // The cachedNamespace is set on pages that have a namespaces filter.
-  // It is set so other pages that have a namespaces filter can default to
-  // what the previous namespaces filter page used rather than defaulting
-  // to 'default' or '*'.
-  @tracked cachedNamespace = null;
-
   @task(function* () {
     const emptyLicense = { License: { Features: [] } };
 
diff --git a/ui/app/templates/csi/volumes/index.hbs b/ui/app/templates/csi/volumes/index.hbs
index 95774663c..668772ddb 100644
--- a/ui/app/templates/csi/volumes/index.hbs
+++ b/ui/app/templates/csi/volumes/index.hbs
@@ -33,9 +33,7 @@
             @label="Namespace"
             @options={{this.optionsNamespaces}}
             @selection={{this.qpNamespace}}
-            @onSelect={{action
-              (queue (action this.cacheNamespace) (action this.setFacetQueryParam "qpNamespace"))
-            }}
+            @onSelect={{action this.setFacetQueryParam "qpNamespace"}}
           />
         </div>
       </div>
diff --git a/ui/app/templates/jobs/index.hbs b/ui/app/templates/jobs/index.hbs
index e08aa1335..3df484328 100644
--- a/ui/app/templates/jobs/index.hbs
+++ b/ui/app/templates/jobs/index.hbs
@@ -43,12 +43,7 @@
             @label="Namespace"
             @options={{this.optionsNamespaces}}
             @selection={{this.qpNamespace}}
-            @onSelect={{action
-              (queue
-                (action this.cacheNamespace)
-                (action this.setFacetQueryParam "qpNamespace")
-              )
-            }}
+            @onSelect={{action this.setFacetQueryParam "qpNamespace"}}
           />
         {{/if}}
         <MultiSelectDropdown
diff --git a/ui/app/templates/optimize.hbs b/ui/app/templates/optimize.hbs
index 11d0c22cc..4bf9fedbe 100644
--- a/ui/app/templates/optimize.hbs
+++ b/ui/app/templates/optimize.hbs
@@ -23,12 +23,7 @@
                 @label="Namespace"
                 @options={{this.optionsNamespaces}}
                 @selection={{this.qpNamespace}}
-                @onSelect={{action
-                  (queue
-                    (action this.cacheNamespace)
-                    (action this.setFacetQueryParam "qpNamespace")
-                  )
-                }}
+                @onSelect={{action this.setFacetQueryParam "qpNamespace"}}
               />
             {{/if}}
             <MultiSelectDropdown
diff --git a/ui/tests/acceptance/jobs-list-test.js b/ui/tests/acceptance/jobs-list-test.js
index 2a758f44a..431a6e037 100644
--- a/ui/tests/acceptance/jobs-list-test.js
+++ b/ui/tests/acceptance/jobs-list-test.js
@@ -6,7 +6,6 @@ import { setupMirage } from 'ember-cli-mirage/test-support';
 import a11yAudit from 'nomad-ui/tests/helpers/a11y-audit';
 import pageSizeSelect from './behaviors/page-size-select';
 import JobsList from 'nomad-ui/tests/pages/jobs/list';
-import Layout from 'nomad-ui/tests/pages/layout';
 import percySnapshot from '@percy/ember';
 
 let managementToken, clientToken;
@@ -423,19 +422,6 @@ module('Acceptance | jobs list', function (hooks) {
     );
   });
 
-  test('the active namespace is carried over to the storage pages', async function (assert) {
-    server.createList('namespace', 2);
-
-    const namespace = server.db.namespaces[1];
-    await JobsList.visit();
-    await JobsList.facets.namespace.toggle();
-    await JobsList.facets.namespace.options.objectAt(2).select();
-
-    await Layout.gutter.visitStorage();
-
-    assert.equal(currentURL(), `/csi/volumes?namespace=${namespace.id}`);
-  });
-
   test('when the user has a client token that has a namespace with a policy to run a job', async function (assert) {
     const READ_AND_WRITE_NAMESPACE = 'read-and-write-namespace';
     const READ_ONLY_NAMESPACE = 'read-only-namespace';
diff --git a/ui/tests/acceptance/optimize-test.js b/ui/tests/acceptance/optimize-test.js
index 0b7fe635f..c2a27e50b 100644
--- a/ui/tests/acceptance/optimize-test.js
+++ b/ui/tests/acceptance/optimize-test.js
@@ -76,6 +76,12 @@ module('Acceptance | optimize', function (hooks) {
       .flat()
       .find((r) => r.resource === 'CPU');
 
+    const currentTaskGroupHasMemoryRecommendation =
+      currentTaskGroup.tasks.models
+        .mapBy('recommendations.models')
+        .flat()
+        .find((r) => r.resource === 'MemoryMB');
+
     // If no CPU recommendation, will not be able to accept recommendation with all memory recommendations turned off
 
     if (!currentTaskGroupHasCPURecommendation) {
@@ -85,6 +91,13 @@ module('Acceptance | optimize', function (hooks) {
         resource: 'CPU',
       });
     }
+    if (!currentTaskGroupHasMemoryRecommendation) {
+      const currentTaskGroupTask = currentTaskGroup.tasks.models[0];
+      this.server.create('recommendation', {
+        task: currentTaskGroupTask,
+        resource: 'MemoryMB',
+      });
+    }
 
     await Optimize.visit();
 
diff --git a/ui/tests/acceptance/volumes-list-test.js b/ui/tests/acceptance/volumes-list-test.js
index 1172a6adf..80541899c 100644
--- a/ui/tests/acceptance/volumes-list-test.js
+++ b/ui/tests/acceptance/volumes-list-test.js
@@ -6,9 +6,7 @@ import { setupMirage } from 'ember-cli-mirage/test-support';
 import a11yAudit from 'nomad-ui/tests/helpers/a11y-audit';
 import pageSizeSelect from './behaviors/page-size-select';
 import VolumesList from 'nomad-ui/tests/pages/storage/volumes/list';
-import Layout from 'nomad-ui/tests/pages/layout';
 import percySnapshot from '@percy/ember';
-
 const assignWriteAlloc = (volume, alloc) => {
   volume.writeAllocs.add(alloc);
   volume.allocations.add(alloc);
@@ -193,19 +191,6 @@ module('Acceptance | volumes list', function (hooks) {
     assert.equal(VolumesList.volumes.objectAt(0).name, volume2.id);
   });
 
-  test('the active namespace is carried over to the jobs pages', async function (assert) {
-    server.createList('namespace', 2);
-
-    const namespace = server.db.namespaces[1];
-    await VolumesList.visit();
-    await VolumesList.facets.namespace.toggle();
-    await VolumesList.facets.namespace.options.objectAt(2).select();
-
-    await Layout.gutter.visitJobs();
-
-    assert.equal(currentURL(), `/jobs?namespace=${namespace.id}`);
-  });
-
   test('when accessing volumes is forbidden, a message is shown with a link to the tokens page', async function (assert) {
     server.pretender.get('/v1/volumes', () => [403, {}, null]);