--- a/www/includes/db_profile_water.php	Mon Feb 25 22:53:41 2019 +0100
+++ b/www/includes/db_profile_water.php	Tue Feb 26 16:18:16 2019 +0100
@@ -79,6 +79,7 @@
 			'total_alkalinity' => $row['total_alkalinity']
 		);
 	}
+	header("Content-type: application/json");
 	echo json_encode($waters);
 }
 ?>