NMDriver wrote:
There may be some exceptions but all the commercial RV parks, State and Federal campgrounds that have a dump station, will allow you to dump for a fee. Most of the rest area free dump stations in NM are "Closed for Maintenance" and have been for years.
You can call your local sewer plant and ask them where to dump and there is always the local septic service that will empty your tank for a fee also.
Local septic service cannot suck it out of the tank, you have to use gravity to empty it. Or it will collapse the tank if they suck like they do for a septic tank.