Ruling on using sanitary waste flow to irrigate date palms

We have date palms which are growing near the sanitary waste flow.  Is it permissible to eat of their dates?

Praise be to Allaah.

Yes, it is permissible to eat of the dates of the trees which are irrigated with water from the sanitary waste flow because if there is no taste or smell, that means that the najaasah (impurity) has disappeared.