19th century world, no question at all. The concrete based buildings in Roman times were amazingly advanced were unreplicated and unequalled until the rediscovery of concrete in the 19th century, not to mention the stuff in the post just above ^^^, but much of the rest isn't comparable.
Naval? Vikings had way better tech (transport over ocean) and that was 9th century technology.
Agriculture? Even Europe's Middle Ages were better. horse collar, water wheels grinding wheat, iron plough. Romans use of iron in agriculture was extremely rare and grain was still processed by hand. I guess that reaper thing was still cool, but overall efficiency showed constant improvement.
Manufacturing? Europe surpassed Rome in most ways by the eleventh century. Textiles, industrial level gears, developments in water power. It only advanced from there.
Sewage and aqueducts were in use the whole time. Constantinople had a massive water system throughout antiquity... OK, since the Greek Speaking part of the Roman Empire survived into the 15th Century, let's call that for the Romans of the 15th Century. (They called themselves the Roman Empire until their ultimate end in 1453, but we call them the Byzantine Empire now. They can't complain that we changed their name after the fact to distinguish them from time the western half disintegrated after the Empire split into pieces.)
Oh, back to topic.
Machine tools, earth moving equipment, wood pulp, sextant, ocean transport, printing, weaving, spinning, labor saving devices of any stripe, electricity, literacy...
Actually, many parts of the 19th century world were still missing technology available to the Romans so there are numerous places around the world that wouldn't measure up to Imperial Rome, but if you are looking at the pinnacle of technology rather than what was universally available, even the 11th century was beyond what the Romans had dispersed except in a few limited technologies since technology was apparently more limited in scope during that era.