Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Water supply (1); control unit (2); treatment unit (3); pressure regulator (4); peristaltic pump (5); sampling nipple (6); replaceable PVC-pipes with PVC-coupons (7). Picture shows position of coupons in replaceable pipes. Bold frame indicates a separate room. Untreated systems (controls without the electromagnetic device) are not shown.
