On a recent visit to relatives in Christchurch I was made aware of a constantly flowing spring that has been made available for anyone to use.
Go to the posted coordinates and take a read of the information there. If the information is missing, see the hint for missing numbers. Please ensure you park on the road alongside the spring and not opposite on the grass. Take care of little ones as this area can be busy at times and the river is opposite. And, any water you take and consume is at your own choice and risk.
To get the final coordinates find this information:
A = Third number of two dates (years) mentioned on top line on right.
B = Number of full length red bricks (if none were broken) along front of drain.
C = Number of rocks along top row of curved rear wall.
X = Number of rocks high, of left edge of curved wall (multiplied by 2).
Y = C + Z.
Z = Eighth number of two dates (years) mentioned on top line on right.
Checksum of A+B+C+X+Y+Z = 32
Cache is at S43 33.ABC E172 38.XYZ