Sewer adjectives are listed in this post. Each word below can often be found in front of the noun sewer in the same sentence. This reference page can help answer the question what are some adjectives commonly used for describing SEWER.
common, great
large, main
municipal, new
old, open
public, sanitary
underground
Hope this word list had the adjective used with sewer you were looking for. Additional describing words / adjectives that describe / adjectives of various nouns can be found in the other pages on this website.
gross