diff --git a/lib/actions/community-actions.js b/lib/actions/community-actions.js
--- a/lib/actions/community-actions.js
+++ b/lib/actions/community-actions.js
@@ -2,3 +2,5 @@
 
 export const updateCalendarCommunityFilter = 'UPDATE_CALENDAR_COMMUNITY_FILTER';
 export const clearCalendarCommunityFilter = 'CLEAR_CALENDAR_COMMUNITY_FILTER';
+export const updateChatCommunityFilter = 'UPDATE_CHAT_COMMUNITY_FILTER';
+export const clearChatCommunityFilter = 'CLEAR_CHAT_COMMUNITY_FILTER';
diff --git a/lib/types/redux-types.js b/lib/types/redux-types.js
--- a/lib/types/redux-types.js
+++ b/lib/types/redux-types.js
@@ -1054,6 +1054,14 @@
   | {
       +type: 'CLEAR_CALENDAR_COMMUNITY_FILTER',
       +payload: void,
+    }
+  | {
+      +type: 'UPDATE_CHAT_COMMUNITY_FILTER',
+      +payload: string,
+    }
+  | {
+      +type: 'CLEAR_CHAT_COMMUNITY_FILTER',
+      +payload: void,
     };
 
 export type ActionPayload = ?(Object | Array<*> | $ReadOnlyArray<*> | string);
diff --git a/web/redux/community-picker-reducer.js b/web/redux/community-picker-reducer.js
--- a/web/redux/community-picker-reducer.js
+++ b/web/redux/community-picker-reducer.js
@@ -3,6 +3,8 @@
 import {
   updateCalendarCommunityFilter,
   clearCalendarCommunityFilter,
+  updateChatCommunityFilter,
+  clearChatCommunityFilter,
 } from 'lib/actions/community-actions.js';
 
 import type { Action, CommunityPickerStore } from './redux-setup';
@@ -21,6 +23,16 @@
       ...communityPickerStore,
       calendar: null,
     };
+  } else if (action.type === updateChatCommunityFilter) {
+    return {
+      ...communityPickerStore,
+      chat: action.payload,
+    };
+  } else if (action.type === clearChatCommunityFilter) {
+    return {
+      ...communityPickerStore,
+      chat: null,
+    };
   }
   return communityPickerStore;
 }