Those are the coords of wells configuration I'm using on my server,
Since many wells on this map are close tio rivers, ponds or lakes I lowered the radius to 50, then tested all of critical wells surroundings and it's possible everywhere to drink or fill containers from natural natural sources near broken wells

Working wells coords:

5925.29 = 1557.01 Banovce nad Bebravou
9954.27 = 1660.19 Miezgovce
1112.28 = 3958.18 Ruskovce
4674.21 = 6940.89 Podluzany
1665.61 = 8021.42 Hornany
868.44 = 13275.86 Motesice
7694.07 = 11022.88 North of OGmil
12623.37 = 10911.27 Ksinna

Not working wells coords:

1902.88 = 2343.02
475.49 = 2881.41
5152.04 = 546.83
4586.05 = 3429.17
12948.80 = 680.49
6787.17 = 3586.75
7443.19 = 4998.85
5609.24 = 4534.09
2879.65 = 6162.38
6192.11 = 5648.38
12120.69 = 6533.35
3515.98 = 9921.25
1539.47 = 10492.00
1228.11 = 10660.36
231.65 = 11484.36
4309.39 = 11376.49
4145.74 = 13610.24
6444.39 = 13658.08
14497.18 = 9705.52
14612.07 = 14476.91