Not all city sewage treatment plants are the same, some, known as level one plants, just remove the solids and add chemicals to the rest before flushing it out to sea. Check with your local treatment facility to see if it is ok to flush coolant down your drain. If you are on REALLY good terms with your local repair shop they may let you add yours to the waste coolant that they collect.

Mark in Anchorage, AK - A city with a level one treatment facility

----- Original Message -----
From: David Brodbeck <gull@GULL.US>
Date: Monday, December 1, 2003 6:31 am
Subject: Re: coolant disposal

> On Mon, 1 Dec 2003, Scott Walker wrote:
>
> > A bit ago William (developtrust) was asking about r&r of a hose
> on his
> > waterboxer.  Many responded with what I am sure was helpful
> info, but I
> > do believe that one of his questions was left unanswered.  That
> being:> What do you do with your old coolant?
>
> This seems to be a controversial topic here.  Nearly everything
> I've seen
> elsewhere on the topic has said that for fairly small quantities
> (like the
> contents of a Vanagon cooling system) it's okay to pour it into the
> sanitary sewer and flush it with fresh water. (i.e., down your
> toilet or
> sink, but *not* into a storm drain, please!)  Apparently the sewage
> treatment plant can deal with it in small quantities.  This is
> probablynot a good idea if you have a septic tank.
>
> You can check with your local recycle center or hazardous waste drop
> first, though, some of them may take it.  Last time I did a
> coolant change
> I wasn't in an area that had one.
>
>
> David Brodbeck, N8SRE
> '82 Volkswagen Diesel Westfalia
> '94 Honda Civic Si -- For Sale
> '86 Volvo 240DL wagon
>