The Minister for the Environment says housing estates being built without connections to sewer networks shouldn't be happening.
Slurry tanks are being used to remove wastewater from a new development in Rathfarnham in south Dublin.
The upgraded infrastructure needed to connect the homes to the network isn't due to be completed until next year.
Green party leader Eamon Ryan says its unsatisfactory.
Parents Reminded Wicklow SENOs Can Issue Letters Of Eligibility
Wicklow on High Alert With Wind And Rain Warnings In Place – No Incidents Overnight
Snow May Fall On Wicklow Mountains Tonight
Tánaiste Announces near €19 million Investment in Wicklow Roads
Arklow Crowned Ireland’s Top Town for Work-Life Balance