A lot of the data is already available on data.gov.ie in geojson format, especially for the Dublin and the Greater Dublin Area. I just wish these people would abide by the CC-BY licence of their original datasource and credit it.

I wish we in Canada had a great site like that. Statistics Canada is notoriously aggressive and the data they do collect is presented in a horrible like a website from the 1990s. That's if you can even find what you want on one of several sites, each dataset is its own website.

what search engine/service do I need to use to find public toilets on OSM? I tested it with public toilets but was only able to find one 'dog toilet' within city limits...

In the end OSM is a database. I use OsmAnd, but I believe that Maps.me uses the same dataset.

LavSeeker app. It's on F-Droid. Not sure if it's on the play store too.

I second this. The data should be merged upstream to OSM, and they have a fairly well documented process to add such contributions.

For those who are interested, the OsmAnd app with the OSM extension enabled is the easiest way to add/enrich map data in my opinion. I have added hundreds of small contributions over the years.

Yep, and also with much more data for example "toilets:wheelchair=yes/no/limited":

https://wiki.openstreetmap.org/wiki/Tag:amenity=toilets

As well as cost, payment methods and opening hours

And there's already an app that shows toilets based on OSM, it's called LavSeeker.

Then it would also show up in the nice oss LavSeeker app: https://github.com/woheller69/lavatories