GROUND WATER IN NORTH-CENTRAL TENNESSEE

172 GROUND WATER IN NORTH-CENTRAL TENNESSEE
is accompanied by enough petroleum to render it unfit for domestic
use or for watering stock. The deep-seated waters are very highly
concentrated brines. Analyses of representative ground waters are
tabjtilatecy>n pag^a. 110-111,
MUNICIPAL GROUND-WATER SUPPLIES
Orlinda. The only town in Robertson County that derives a municipal
water supply from an underground source is Orlinda (estimated population, 515),
on the Highland Rim plateau in the northeastern part of the county. The prin­
cipal source is a tubular spring (No. 89) that issues from a solution channel in
the wall of a sink hole about half a mile east of the town. It is reported that the
discharge ranges from 12,000 to 15,000 gallons a day and that it is sufficient for
the needs of the town even in periods of extreme drought. From the spring a
pump with a capacity of 35 gallons a minute raises the water to a 10,000-gallon
wooden standpipe near the center of the town, whence it is distributed by gravity.
A drilled well (No. 88) 4 inches in diameter and 80 feet deep constitutes an emer­
gency source; it is equipped with a deep-well pump having a capacity of 5 gallons
a minute. The water from both the spring and the well is sterilized with chlorine
before use.