diff --git a/integration-tests/templates/etlserver-all/etc/service.properties b/integration-tests/templates/etlserver-all/etc/service.properties
index 635c1761399528778c3743f7fb6041dfa9c58190..d700a8eee8ce2098d22656f2110bfe2bd8d1ab24 100644
--- a/integration-tests/templates/etlserver-all/etc/service.properties
+++ b/integration-tests/templates/etlserver-all/etc/service.properties
@@ -7,6 +7,11 @@ storeroot-dir = ../data/main-store
 # The check interval (in seconds)
 check-interval = 2
 
+# If free disk space goes below value defined here, a notification email will be sent.
+# Value must be specified in kilobytes (1048576 = 1024 * 1024 = 1GB). If no watermark is
+# specified or if value is negative, the system will not be watching.
+watermark = 1048576
+
 # The URL of the LIMS server
 server-url = https://localhost:8443/openbis