Index: trunk/data/validator/ignoretags.cfg
===================================================================
--- trunk/data/validator/ignoretags.cfg	(revision 15151)
+++ trunk/data/validator/ignoretags.cfg	(revision 15159)
@@ -369,6 +369,7 @@
 ;
 ; Tags not yet decided (to remove from this section when added or deprecated) 
-; see josm tickets: 10759 15309 15774 16315 16658 16793
-;
+; see josm tickets: 17770 10759 15309 15774 16315 16658 16793
+;
+K:service=irrigation
 K:man_made=mast
 K:amenity=childcare