You can file an FIR with the police station. It's illegal to disconnect water supply in any circumstances

1. Complain to the society management with a formal complaint. 
2. If it does not get resolved then send a legal notice. 

In no condition water connection is disconnected. You can file FIR against all nine members

Yes. Blatantly illegal. You must move the cooperative court

No. It's not a criminal matter to approach police. It is a civil dispute, between you and your housing society. So police complaint is not maintainable

Association is at liberty to fix timings for water supply 

however timings should be convenient to all flat owners 

since you are working women your convenience should also be taken into account by the association 

If you file police complaint no action would be taken as decision was taken by consent of 9 members 

you can issue legal notice to association that timings fixed are not convenient to you 

See you can file a police complaint but in case the police will not likely to take complaint , you can issue a legal notice to the association seeking redressal of issue as water is essential In case on notice they fail action against association in court can be taken.

Dear Sir,

Any action of the association in disconnecting the water supply to the non-member flat will be considered by courts as illegal as it is an interference in enjoying the common facility. ... As per Supreme Court ruling that no society is entitled to disconnect or suspend common amenities including water supply.

The owner has to be persuaded to pay the maintenance charges as a member of the Association.
If any flat owner is not paying the maintenance charges, it is open to the association to pay the same and demand the same from the defaulting member in accordance with law, provided in the Apartment Ownerships Act.
As per Supreme Court ruling that no society is entitled to disconnect or suspend common amenities including water supply. You have to issue a legal notice to the defaulter and if he/she does not budge, move the Civil Court.
The Apartment Ownership Act of States will have a clause somewhat like this:
Compliance with covenants, bye-laws and administrative provisions.- Each apartment owner shall comply strictly with the bye-laws and with the administrative rules and regulations adopted pursuant thereto, as either of the same may be lawfully amended form time to time, and with the covenants, conditions and restrictions set forth in the Declaration or in the Deed to his Apartment. Failure to comply with any of the same shall be a ground for an action to recover sums due for damages or injunctive relief or both maintainable by the Manager or Board of Managers on behalf of the Association of Apartment Owners or, in a proper case by an aggrieved apartment owner. 

Don't worry Mam please be cool. You have all the rights to live so please lodge a complaint with the Police Department of near by Thana giving all the facts. As this is your internal arrangement so best to approach the police who will instruct the other co-owners to rectify the arrangement, the police have power to do so.

1. As per the information mentioned in the present query, makes it clear that the acts of the other side is completely arbitrary and agaisnt the rule of law of equality.
2. No, even if you happen to comolaint to the police, then police may not interere as in the face of it, the dispute is completely of civil nature and police would also suggest you to approach the civil court of law.
3. I would advice you to immediately file a suit for permanent and temporary injunction from continuing the acts as this is infringing your fundamental right which has been vested to you by our Constitution.
4. You would definitely get the relief from our court of law, have faith in our judiciary.

This cannot be termed as disconnection

as only the individual valves supplying to each flat are closed and the entire water is collected in the overhead tank from which it can then flow to all the houses for storage in their respective water tanks

also the water is released at 930 am, so you have an option to collect and fill the drinking water and for water required for other purposes, you will have to make arrangement in your water tank so that it is automatically filled when the water is released from overhead tank

in my opinion any complaint by you will only be a futile exercise and will not yield any result 

There should be fix timings for opening valves of water supply 

2) convenience of children and working women must be taken into account 

3) file suit and seek court orders to direct association to fix timings for water supply convenient fir working women and children 

The notice tongue association can be served and further you can also.make a complaint before the Municipal.corporation for water.

Certainly not Mam,so involve the local administration through local police.

This problem of water should be sorted out within the society itself by doing a meeting of all the residents so that the releasing of water well in time so as those were office goers may use the water.

There is no matter of child labour if you are child is doing anything for the family it is not counted in child labour and if your problem cannot be sorted out why the meetings within the society when you have the option to move your complaint to Registrar of societies and get the direction for the society and its operation of water related services

You file the FIR and ask police to take coercive action against the offenders

This is a local problem which have to be sorted out locally. You can represent your plight in a meeting that can be convened specifically for this purpose.

Since you also contributed equally to the second water supply connection, you are entitled to equal share of water, however, it may be your duty also to make some arrangement to secure that your water supply position is safe so that you dont face water shortage when you return from office.

You can take it up through your association also.

This is not a criminal offence and nobody can be held responsible for you not getting water when you return from office. 

You will be told that you make som alternate arrangement to fill up water which is being supplied during your absence.

You cannot file any legal  solution to this problem. You may have to follow some procedure so that you dont suffer due to this instead of agitating over it.

Your anger over the local issue or agitating over the problem which never is, may not fetch you any fruitful solution, hence better you may look for some alternate arrangement by talking to the association members to fetch you relief and remedy to this temporatry problem.