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View Diary: Who wants fluoride in their beer? (148 comments)

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  •  Uh...that's not correct (1+ / 0-)
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    N in Seattle

    You can get a little background on it here:

    The Portland Water Bureau treats Portland's water with chloramination. This process starts with chlorine to disinfect the water. Next the city adds ammonia to ensure that disinfection remains adequate throughout our distribution system. New federal regulations are being developed and may require additional treatment processes by 2013.

    The Portland Water Bureau also adds sodium hydroxide to increase the pH of the water to reduce corrosion of plumbing systems. This treatment helps control lead and copper levels at customers' taps should these metals be present in the customers' home plumbing.

    Portland's water is currently not filtered. The Bull Run source meets the filtration avoidance criteria of the 1989 Surface Water Treatment Rule and has had a waiver from the requirement to filter since 1991.

    ...cue the anti-fluoridation hacks with claims that chlorine and ammonia are deadly, toxic gases and that sodium hydroxide is a corrosive, hazardous waste....
    •  Thanks for the correction (0+ / 0-)

      I'd been told different several years ago by folks who sold fish for aquariums and ponds, who'd I think would know better.  They said ammonia was added.

      Orly, it isn't evidence just because you downloaded it from the internet.

      by 6412093 on Mon May 20, 2013 at 10:26:26 AM PDT

      [ Parent ]

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