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SCADA advice needed
Dennis Hudson
Posted: Wednesday, October 27, 2010 7:11 AM
Joined: 12/8/2009
Posts: 4


We are going through a strategic planning phase and considering how
and what services can be combined, for example, water and sewer
maintenance activities. We are looking closelyat this and before
getting too deep need thoughts on the following:
How many agencies have water and wastewater alarms coming into the
same SCADA system? Is this feasible, or advisableWhat equipment is being used if this is being done?

Thomas Jenkins
Posted: Wednesday, October 27, 2010 8:46 AM
Joined: 1/13/2010
Posts: 8

I've provided systems combining water and wastewater into a single SCADA system, including in plant monitoring for the water and wastewater tretment plants plus telemtry to the reomote pump stations. From a technical standpoint this is entirely feasible.


Whether it is advisable is an economic and political question. Economicaly you could save money if the main control station was common at a single location. Otherwise you don't save much money. Politically it depends on whether there is a common management for both water and wastewater. If so there would be an advantage to consolidation. If it is simply two independent departments that happen to be in the same town, you won't gain much and could start a lot of arguments.

Posted: Wednesday, October 27, 2010 4:53 PM

Well, we currently operate independently of each other but plan on merging services over time.


The current configuration has the main SCADA station at the water division offices. The wastewater guys use a different alarm system (Raco Alarm Agent) and the two are incompatible. So, since one of my sewer alarms got taken out by lightening we are evaluation our future direction/needs before running out and replacing the unit.

Posted: Thursday, October 28, 2010 2:18 PM
Joined: 6/13/2010
Posts: 11

We have the ability to Monitor S.C.A.D.A. from Water and Wastewater this includes Water Wells,Water Treatment,Wastewater Treatment,Collection. Presently Water Plant can Monitor Wastewater Alarms, view the screen at each site, but only have the configuration set up to start and stop Equipment at Water sites. In the reverse order I can Monitor from my S.C.A.D.A. all Wastewater and Water sites but not able to start and stop any Equipment but it is not difficult to have system set up to allow the starting and stopping of Equipment. A majority of the Alarms are on fibre as Bell problems are ussualy slow to be repaired and the Motorolla alarms are subject to signal strength and placement of Antennas. The Main Wastewater Plant has the ability to start and stop some of the Equipment within their Facility but only monitor Alarms for the outlying Plants. Seems pretty bullet proof, presently problems are fixed fairly rapidly.

Posted: Thursday, October 28, 2010 3:54 PM

We have a combined two SCADA Systems so they can alarm as one. If the phone lines are down at the WWTP the Water computer will pick-up the alarm and make the call. If both scada HMI computers fail to call, a dialer calls after thirty minutes of alarm from the the Allen-Bradly. This worked well when the voice card died in the WWTP computer and it was going to be 3 weeks to get a new one.