Actually, the answer given to anyone who shows that they really don't understand the subject properly is to get in someone who does know. No offence intended, but you definitely do not understand some fundamental concepts which are not optional for you to be able to do electrical work safely.I asked for help and an answer and I received sarcasm and a putdown. Possibly you do not know the answer,possibly you do but are reluctant share it as your stock answer is obviously - call an electrician -you know nothing.
Apart from the list of questions B-A-S gave about how you designed and tested the work you did, have you notified this work to your local council ? I rather think you won't have - or you'd have ranted about the cost to DIYers - in which case you may like to know that you have committed at least one criminal offence, probably several.I have no intention of calling in an electrician -never ever called one since moving in. Have virtually rewired my home, fitted several consumer units and just completed a completely new shower circuit installation without the aid of an electrician - just my pathetic diy books and advice from an ex work friend who is a spark - not bad for someone who knows nothing.
Specifically you have done notifiable work which (I assume) has not been notified. The new shower circuit is notifiable, as is installing a CU, and this has been the case since 2005.
Given your lack of knowledge, it's almost certain that you have also failed to comply with Part P of the building regs which apply to everyone (DIYers as well as professionals).
But to your specific question, yes there should be a main bonding conductor from the water supply (normally within 600mm IIRC) of it entering the property to the MET (Main Earthing Terminal). I believe this should normally be 10mm2 in domestic environments, but it's possible it may need to be larger. If there are non-conductive (ie plastic) pipes and fittings in the system then it's possible that additional bonding may be required.