Locally, the city Round Rock, Texas went from
chlorine to chloramine just 2-3 months ago. This was posted on their
website at http://www.ci.round-rock.tx.us/news/ as
follows;
Round Rock water
conversion
On Monday, March 3, the City will convert its water disinfection process from chlorine to chloramine. Chloramine is a combination of chlorine and ammonia and is a widely used alternative to free chlorine. During the change process, please note the following: n The water is safe to drink. n Customers may notice a change in the taste and odor of the water. This is normal and should diminish after the system is fully converted. n Dialysis patients and aquarium owners will need to change their filter processes. How to remove chloramine according to the Water
Quality Association at http://www.wqa.org/sitelogic.cfm?ID=348
So what is shell-based activation? and how long for the zeolite absorption?
Chloramines can be removed from water with very low flow rates (5 to 10 minutes contact time) through shell-base activated carbon, followed by mineral zeolite media for residual ammonia adsorption. http://www.awwa.org the American Water Works Association, an alternative group, though hard to pinpoint valuable information, and you have to have a password to get the guts of the info. But they're there. Tampa/Miami/Dade info on Chloramines http://pubgis.co.pinellas.fl.us/pcuweb_live/chloramines02.cfm
The Los Angeles site http://www.ladwp.com/water/quality/wq_nh3cl.htm
Rainwater is looking better all the
time!
Steve Bridges
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