Kerosene has been found in the water supply of around 75 houses in Galway.
A group set up to protect the River Shannon has said it will "strongly oppose" any move to divert water from the river to Dublin to cater for anticipated shortages in the city.
The Taoiseach Enda Kenny has said the Government will be able to take Irish Water off its books - despite concerns expressed by the European Commission.
Junior Finance Minister Simon Harris said the Government is "confident" Irish Water will pass European market tests.
Households who have not yet registered with Irish Water have until midnight tonight to submit their details, however they will still be able to avail of the €100 water conservation grant if they miss the deadline.
The Deputy leader of Sinn Féin, Mary Lou McDonald, has reiterated she will not be paying her water charges, but she has registered her details with Irish Water.
As of midnight tonight, the 835,000 households who have not confirmed their details with Irish Water may face a default charge of €260.
Irish Water has today announced that more than one million households have registered their details with the company.
Irish Water has said that it will accept registrations after tomorrow's deadline elapses.
A confidential report from the European Commission indicates that it has concerns over Irish Water's finances.
The Public Expenditure Minister Brendan Howlin has said Irish Water needs to “ratchet up” spending - after it was revealed that supplies for one million people are at risk.
A spokesperson for Irish Water has said that she doesn't know how much public money was lost in the PPS number debacle.
Another new law on water charges will be published in the Dáil's new term.
The Water Services Bill has passed all stages in the Dáil tonight after the Government exercised their power to cut short the debate.
Debate on the government's new laws on water charges will be cut short tomorrow night to guarantee it is passed before Christmas.
New doubts have emerged about the Government's funding model for Irish Water.
Environment Minister Alan Kelly has claimed that 920,000 households have now registered with Irish Water.
Irish Water has said that it is putting a 'protocol' in place to destroy PPS numbers it received in recent weeks.
Former Fine Gael leader Alan Dukes has said the Government had made a "god-awful" mess of Irish Water.
Irish Water is reportedly being ordered to slash costs and reduce staff numbers.
Water meter installers have claimed that a worker was struck by a van driven by a protester in north Dublin last week.
The Taoiseach Enda Kenny has said the Government will make a decision shortly that will provide 'clear and accurate' information on water charges.
Former Minister Fergus O'Dowd says he will not be resigning from Fine Gael.
Five trade unions which have led the campaign to stop water charges have urged all members to join scores of nationwide demonstrations tomorrow.
Anti-water charges campaigners predict more than 100,000 protesters will be on the streets at 70 demonstrations around the country this Saturday.
Communications Minister Alex White has said that the Government has been "behind the curve" on Irish Water and "bit off too much too quickly".
Irish Water could be forced to hire private contractors to restrict supply for households which don't pay their charges.
Irish Water has extended the date for registration to pay for their water.
An Irish MEP is calling for the roll-out of water charges to be suspended until a proper system is in place.
Taoiseach Enda Kenny said today that he has "every confidence" in the chief executive of Irish Water.
Irish Water has said it will investigate claims that it sent tenants' bank account details to some landlords.
Nine water meter protesters are being asked to give undertakings not to obstruct the installation of water meters in North Dublin.
The Government has ordered a review of procedures and communications at Irish Water.
Fianna Fáil says sacking the head of Irish Water will do nothing to resolve the problems at the company.
Finance Minister Michael Noonan has said he is unaware of any plans to change senior management at Irish Water.
A spokesperson for Irish Water has confirmed that they do not have a bonus scheme, however they will have a performance related awards scheme for employees.
Irish Water is facing fresh controversy this morning after it was revealed how much it plans to charge households to fix a leak.
Sinn Féin is holding a Day of Action in Dublin today opposing the introduction of water charges.
Irish Water has said it will not use someone's PPS number to chase a customer for any unpaid bills.
A Fine Gael TD has said that the problem with Irish Water is that unanticipated issues are arising every week.
A Fine Gael backbencher has admitted there is disquiet amongst members on the issue of Irish Water.
Tánaiste Joan Burton has said that protestors objecting to water meters can have video equipment that would "put Hollywood in the ha'penny place".
Irish Water insists that customers personal data will only be used in specific ways and users can decide what information they provide.
Gardai had to be called after residents of a Limerick housing estate prevented Irish Water staff from entering the estate this morning to lay water meters.
Residents of another Cork housing estate have mounted a blockade against the installation of water meters.
The Ombudsman Peter Tyndall has expressed concern that he has no power over Irish Water.
Protests against the installing of Irish Water meters continued in Dublin today, with protestors claiming a woman was injured at one of the protests.
The Government has confirmed the average water bill will be €240 per year.
One of the leaders of a protest against the installation of water meters at a housing estate in Cork city has said they will keep their blockade up "for as long as it takes".
The head of Irish Water has defended the company's spending on its logo.
Irish Water said today that water meter installations are not causing leaks.
Dublin City Council has reportedly spent €136,000 fixing leaks caused by the installation of water meters.
The Dáil has passed a motion that will extend current and future Freedom of Information legislation to cover Irish Water.
The Minister for Finance has defended the number of staff being taken on by Irish Water.
The Green Party leader Eamon Ryan wants the Government to put the brakes on Irish Water.
A high-profile economist is warning that Irish Water is overspending on staff by up to €2bn.
Twenty-nine people working at Irish Water are on salaries of more than €100,000.
Public Expenditure Minister Brendan Howlin has said that the Government doesn't have the power to dictate bonuses for staff at Irish Water.
The Taoiseach has said he is confident that the head of Irish Water is the right man for the job.
The junior minister responsible for water charges, Fergus O'Dowd, says households will still receive some water free of charge.