Where does “sewerage” come from?

Sewerage comes from English sewer, from English sew, from Chinese 兒, from Latin -aticum, from Latin -are, from Latin -arius, from Latin securus meaning free from care or danger.

sewerage (English): A sewer system; Misspelling of sewage

Definitions

A sewer system; Misspelling of sewage

Ancestry of “sewerage”, step by step

Step	Language	Word	Meaning
1	English	-age	forming nouns with the sense of collection or...
2	Middle English	-age	Forms nouns indicating a right or relationship;...
3	Old French	-age	forms nouns with the sense of 'action or result...
4	Old Occitan	-atge	suffix used to form masculine nouns
5	Latin	-āticum	—

Every word from Latin -āticum →Every word from Old French -age →Every word from English -age →