County Coun­cil agrees to in­ves­ti­gate pos­si­ble case of wa­ter con­tam­i­na­tion in lake near Castle­mar­tyr

Irish Examiner - County - - News - ChristylParker

Cork County Coun­cil has agreed to in­ves­ti­gate con­cerns about pos­si­ble con­tam­i­na­tion in Loughaderra near Castle­mar­tyr.

Amid fears of a risk to wildlife, the coun­cil re­ferred con­cerns to the Depart­ment of Fish­eries af­ter Cllr Noel Collins said the “con­di­tion and colour of the wa­ter” was rem­i­nis­cent of times past when the lake was pol­luted.

The lake was “once beau­ti­ful but is now de­stroyed by pol­lu­tion”, he said.

The coun­cil’s se­nior ex­ec­u­tive sci­en­tist Frank O’Flynn said the lake, 1.5 me­tres deep, was fed by springs but had neg­li­gi­ble wa­ter move­ment and turnover.

Lo­cated in “a highly sen­si­tive agri­cul­tural area, with in­ten­sive dairy and tillage farm­ing”, Mr O’Flynn said there were “no farm­yards in di­rect con­tact with the lake” and no ap­par­ent risk from di­rect run-off of slurry soiled wa­ter. Like­wise, there was no dan­ger from an es­ti­mated 45 sep­tic tanks in the vicin­ity or from other dis­charges from nearby dwellings, he ex­plained.

He re­vealed, how­ever, “the main im­pact on wa­ter quality in the lake is from dif­fuse loss of nu­tri­ents from agri­cul­ture and from sep­tic tanks ser­vic­ing in­di­vid­ual dwellings, to ground­wa­ter in the catch­ment area”. Ground­wa­ter in­flows car­ry­ing nu­tri­ents con­trib­ute to al­gae growth which, along with weeds, low rain­fall, and the shallo depth, was re­spon­si­ble for any wate

O’Flynn ad­vised.

Last year, the coun­cil sent ad­vi­sory leaflets warn­ing lo­cals of risks fro func­tion­ing sep­tic tank sys­tems”. He said the most com­mon fault with sewage tanks was “they are not be­ing desludged on a reg­u­lar ba­sis”.

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