On Aug 10, 7:18*pm, blueman wrote:
When our in-ground sprinkler is running outside, I can hear the water
meter 'clicking' through all the pipes --

snip

- Is this "normal" for a water meter?

Sometimes for older mechanical read only meters.

- Could this be affecting the metering? (either positively or negatively)

Why don't you check it? Read the meter, fill up a gallon jug as many
times as you feel are adequate and empty it on the lawn. Read the
meter again. Ten jug trips ought to show 10.0 on the meter. Continue
until you are certain of the meter correlation with the number of jugs
of water. Remember to fill the jugs to the exact level that they were
when purchased with liquid content. Five gallon pails are too awkward
to mess with.

Joe