COMHAIRLE CONTAE ÁTHA CLIATH THEAS
SOUTH DUBLIN COUNTY COUNCIL

MEETING OF LUCAN/PALMERSTOWN/NORTH CLONDALKIN AREA COMMITTEE

Tuesday, March 23, 2021

QUESTION NO. 17

QUESTION: Councillor G. O'Connell

To ask the Chief Executive to give an update on the proposed work on the Glenaulin Stream as discussed in Item 65356 (Feb 20).

REPLY:

The Glenaulin Stream is not on the EPA Operational Monitoring list under the Water Framework Directive, therefore it is not routinely sampled. Routine sampling occurs at a number of locations on the Liffey, the Griffeen, the Camac, the Dodder and the Owendoher Rivers. The Council takes non-routing samples in other water bodies from time to time and the Glenaulin Stream was sampled in February 2020 which showed dissolved oxygen, pH, and chemical oxygen demand to be within acceptable range but exceeded the range for ammonia and phosphorus. A second sample was collected in March 2020 and all tests were within the acceptable range. The sporadic exceedances are indicative of a culverted stream with low levels of pollution within the pipe network draining to that stream.

The River Dodder has been prioritised for inspection and water quality improvement work in the River Basin Management plan 2018 to 2021 and all other rivers and streams, including the Glenaulin, will be considered for specific improvement work in the next cycle of the River Basin Management Plan.

It is anticipated the tools and optimisations developed in the Dublin Urban Rivers LIFE project for pollution reduction and water quality improvement will be applied to other streams in the County, including the Glenaulin Stream, when that project is completed.