Where was Toilet no Kamisama filmed?

Song by Kana Uemura

Toilet no Kamisama (2010–) was filmed in Wakayama, Kawanishi, Nishinomiya High School and Osaka Prefectural Archive of Kamigata Comedy and Performing Arts, 4 places named in its Japanese Wikipedia’s スタッフ section, in Japan. Wikidata records no filming location for it at all, so the article is the only recorded source. Each place says where its claim comes from.

See them on the map → Wikipedia Source data

Places per Japanese Wikipedia's スタッフ section

Japanese Wikipedia’s スタッフ section names 4 places. Each links to the sentence that says so.