diff --git a/source_strings.yaml b/source_strings.yaml
index 26e59ec8..71134c71 100644
--- a/source_strings.yaml
+++ b/source_strings.yaml
@@ -6602,6 +6602,8 @@ en:
         # water_source=*
         label: Water Source
         options:
+          # water_source=groundwater
+          groundwater: Groundwater
           # water_source=main
           main: Water Distribution Pipe
           # water_source=pond