I don't think hams are being singled out. Many of the water tanks that my past employers had sites on tightened up security. No more unexpected visits, you need to call ahead of time. No climbing the tank without prior notification. Fences, cameras, alarms were installed in some cases. It was all explained by Homeland Security. One ham repeater was allowed to stay on the tank, but their shelter had to be outside the new fence. Outside wireless contractors were sometimes stopped by local police and detained because they showed up unannounced and only had a green card and foreign passport for ID. This made things interesting at times.
I think this is all reasonable demands to protect today's public water systems. I never had a problem, as I did abide by the rules. 73, Joe, K1ike
