. . . continued from above

The other articles were much less informative, and mostly contained 'me-too' recitations of the standard pool industry wisdom. Most of what I say was correct. However, the specific chlorine level guidelines listed were either unsupported, or based on WAG's (Wild A## Guesses). Apparently so was the original (circa 1970) EPA standard of 3 ppm, according to reports I've gotten from people who were sitting at that table. What was reported to me was that they based their decision on the fact that most public pools, then using gas chlorine injected into pool water containing no stabilizer, were struggling to maintain 1 ppm, but that those that did were mostly achieving what was then perceived to be adequate sanitation. The 3 ppm level was reportedly chosen as been sufficiently greater than the common 1 ppm, to offer an adequate range of operation. The problem was that this 3 ppm standard is NOT appropriate for the stabilized pool operations that was just beginning to be widespread at that time.


By the way, I found one very informative analysis posted on the web, in checking out some things for this post. In particular, it may be right up Waterbear's alley. Here's where I found it: http://almashriq.hiof.no/lebanon/600...ar-water/idrc/

That's all for now . . .

Ben
"PoolDoc"