WHAT WATERWORKS MEN ARE DOING Construction, Extension, and Management of Plants. NASHVILLE, TENN. The waterworks department of Nashville, Tenn., is continually and gradually improving. The revenue collected for 1902 was $ 159,204.94, an increase of $8,384.65 over the previous year. The operating expenses were $57,829, a reduction of $1,756.64 as compared with 1901. This not only includes operating expenses, but improvements and betterments. During the year a modern air-compressor was purchased at a cost of $890, to take the place of the three old and antiquated air pumps of the locomotive pattern, also an improved lathe at a cost of $327; two modern improved pipe tapping machines at $75 each. John T. Ahearn is superintendent of waterworks. WACO, TEX. Contractor McSweeney, who is to construct a lake for the Katy railway about a mile and a quarter s nithwest of Waco, Tex., the water to be brought in to the…