diff --git a/src/org/labkey/test/pages/core/admin/ShowAdminPage.java b/src/org/labkey/test/pages/core/admin/ShowAdminPage.java
index 0df5e6ea13..7f448e18b6 100644
--- a/src/org/labkey/test/pages/core/admin/ShowAdminPage.java
+++ b/src/org/labkey/test/pages/core/admin/ShowAdminPage.java
@@ -251,6 +251,11 @@ public void clickPostgresLocks()
         clickSettingsLink("postgres locks");
     }
 
+    public void clickPostgresTableSizes()
+    {
+        clickSettingsLink("postgres table sizes");
+    }
+
     public List<WebElement> getAllAdminConsoleLinks()
     {
         goToSettingsSection();
diff --git a/src/org/labkey/test/tests/PostgresQueriesTest.java b/src/org/labkey/test/tests/PostgresQueriesTest.java
index dc1838e43b..bce53b2f03 100644
--- a/src/org/labkey/test/tests/PostgresQueriesTest.java
+++ b/src/org/labkey/test/tests/PostgresQueriesTest.java
@@ -66,6 +66,9 @@ public void testQueries() throws IOException, CommandException
         goToAdminConsole().clickPostgresLocks();
         verifyLocksGrid();
 
+        // Verify locks grid as site admin
+        goToAdminConsole().clickPostgresTableSizes();
+        verifyTableSizesGrid();
 
         // Verify project admin gets a 401 for locks grid
         pushLocation();
@@ -150,6 +153,17 @@ private void verifyLocksGrid()
         Assertions.assertThat(cols).as("pg_locks columns").contains("Locktype", "Virtualtransaction");
     }
 
+    private void verifyTableSizesGrid()
+    {
+        assertTextPresent("pg_tablesizes");
+        DataRegionTable table = new DataRegionTable("query", this);
+        List<String> cols = table.getColumnLabels();
+        Assertions.assertThat(cols).as("pg_tablesizes columns").contains("Table Schema", "Table Name", "Table Size", "Index Size", "Total Size");
+        // Check a couple of expected tables
+        table.setFilter("table_schema", "Equals", "audit");
+        assertTextPresent("queryupdateauditdomain", "userauditdomain");
+    }
+
     private void verifyActivityGrid(boolean expectDelete)
     {
         assertTextPresent("pg_stat_activity");