Dog poo is the most potent pollutant on Dublin beaches according to Dublin City Council.
The council's environmental protection division believes better signage and more information campaigns are needed reports the Irish Times.
One dog poo can pollute a water body the size of a tennis court according to a report sent to councillors.
More dog wardens could also be patrolling beaches this summer to catch people not cleaning up after their pets.
In the past 5 years just 27 fines were issued in Dublin city for dog fouling.
