Greaghlone Lake
Not monitored
This spot isn't an officially designated bathing water, so it has no annual classification and no pollution-alert monitoring. Past sample results are shown below, but none is recent. Assess conditions yourself before entering.
Checked against the Environmental Protection Agency (Ireland) · data last changed 7 days ago.
About this spot
20-30m stretch of gravel beach accessed by short lane from road
This spot’s record
Greaghlone Lake is in Monaghan, about 8 km from Carrickmacross. Across the 12 most recent samples published by the Environmental Protection Agency (Ireland), E. coli counts ranged from 10 to 1,180 per 100 ml. The highest was taken on 15 September 2025. A classification is calculated from percentiles across four seasons, so no single reading decides how this water is rated.
Recent sample results
The last 12 bacterial samples published by the Environmental Protection Agency (Ireland), most recent on the right. Counts are per 100 ml of water.
Dashed line: 1000 E. coli per 100 ml, the Bathing Water Directive guide value for inland waters.
| Date | E. coli | Enterococci | Assessment |
|---|---|---|---|
| 7 Sept | 10 | 4 | Excellent |
| 17 Aug | 10 | 1 | Excellent |
| 13 Jul | 10 | 1 | Excellent |
| 2 Jun | 10 | 1 | Excellent |
| 15 Sept | 1180 | 130 | Poor |
| 26 Aug | 10 | 9 | Excellent |
A bathing water's official classification is calculated from percentiles across four bathing seasons, not from any single sample — so one high reading doesn't mean a spot is unsafe, and one low reading doesn't mean it's clean today.
Facilities & access
- Lifeguard
- No
- Parking
- YesLimited
- Toilets
- No
- Accessible entry
- No
- Dogs
- No
- Public transport
- No
Official water quality
This spot has no official annual classification.
Common questions
- Can you swim at Greaghlone Lake right now?
- Greaghlone Lake is currently marked "Not monitored". This spot isn't an officially designated bathing water, so it has no annual classification and no pollution-alert monitoring. Past sample results are shown below, but none is recent. Assess conditions yourself before entering. This reflects the latest data published by the Environmental Protection Agency (Ireland). Conditions change quickly — always assess the water yourself before entering.
- Is there a lifeguard at Greaghlone Lake?
- No lifeguard cover is listed for Greaghlone Lake. Never swim alone at an unguarded spot.
- What facilities are there at Greaghlone Lake?
- Greaghlone Lake has parking. Dogs are restricted. Facility information is published by the Environmental Protection Agency (Ireland).
Get told when this changes
We’ll email you when the swim status at Greaghlone Lake moves — a pollution alert opening, or one lifting. Not a newsletter: only this spot, only when it changes, at most once every 12 hours.
Your address is used for these alerts and nothing else, is never shared, and is deleted the moment you unsubscribe — a link is in every email.
Nearby swimming spots
See all swimming spots near Carrickmacross — about 8 km away.