To summarize: Nobody likes to talk about waste, so euphemisms abound. Past tagging has been all over the map, and the same tags were used in Europe for dog_waste bins as well as motorhome dump points.
------------------------------------------------------------------------------------------------------------- The basic styles of holding tank station seem to be: - elsan point (walk up dumping basin)(also called a CDP) - round drain (gravity drain hose : 3" in diameter in the USA) - pump-out (mechanical suction). Accepting: - Gray water (usually) - Bilge water (rarely) - Black water (usually) - Black water but not gray water (occasionally) Prohibiting: - Certain tank chemicals Offering at the same location: - Rinse water which may not be potable. - Drinking water (amenity=water_point). - Drinking water (amenity=drinking_water). - Walk up toilets. Access Rules: - From water or land, or in a few cases both. - Free, paid in advance, pay at the pump with coins or cards, or pay at the office. - Part of regional network or not (card key, payment card). - Accessible to overnight guests only, or to everyone. Position may be: - Located on a dock next to waterway=fuel (often) - Located on a separate dock. - Located on land, even it only serves marine users. - Located at each camping pitch. - Located at a central location, with varying degrees of accessibility by large boats or motorhomes (often). - Unknown (many RV and Marina sites list dump services on their websites, but the exact location does not appear on the brochure or map)(often). - Associated with a walk up toilet, or not. Rendered by: - Opensea map, and nothing else prominent. ------------------------------------------------------------------------------------------------------------- Marine fuel, and amenity=water_point are very similar. ----- A "chemical toilet" is something completely different in the USA. A"porta potty" is a walk up toilet in the USA. German facilities sport about a dozen designs of coin pay stations incorporating a CDP and round drain into one unit, and sometimes a pumpout, water point, and rinse hose for good measure. ----------------- So how do we get to the point where these facilities can be rendered, so a campground map looks proper when brought up on a smartphone?
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