Unless your pumps have proven themselves unworthy (mine can still shoot washer fluid over to the rear window) just replace the gaskets.
The reservoir itself can be damaged, possibly due to age, or it was punctured or cracked while undergoing some prior servicing in that location.
2009 ML350 (84K) - Family vehicle
2001 CLK430 Cabriolet (71K) - Wife's car
2005 BMW 645CI (124K) - My daily driver
2012 Mustang V6 (60K) - Daughter's car