Acute or chronic infection of the renal medulla and upper urinary tract resulting from untreated cystitis is:

Which of the following is NOT a situation when water supply analyses may be performed?

A. On a periodic basis B. When distribution system is altered or expanded C. When applications are made for new construction D. When standpipe connections are altered or expanded

Fungal superinfections usually occur in the anal, genital, and:

A. skin areas B. eye areas C. oral areas D. ear areas