Can you swim at Mountshannon, Lough Derg right now?

Mountshannon, Lough Derg is currently marked "Good to go". No current pollution alerts — always assess conditions yourself. This reflects the latest data published by the Environmental Protection Agency (Ireland). Conditions change quickly — always assess the water yourself before entering.

What is the water quality like at Mountshannon, Lough Derg?

the Environmental Protection Agency (Ireland) classified Mountshannon, Lough Derg as Excellent in 2025. Classifications are a rolling assessment of bacterial samples taken over four bathing seasons, measured against E. coli and intestinal enterococci limits set by the EU Bathing Water Directive.

Is there a swimming ban or warning at Mountshannon, Lough Derg?

There are no active bathing restrictions published by the Environmental Protection Agency (Ireland) for Mountshannon, Lough Derg. That is not a guarantee of safety — assess conditions yourself.

Is there a lifeguard at Mountshannon, Lough Derg?

Yes — Mountshannon, Lough Derg has lifeguard cover. Cover is seasonal; check locally before relying on it.

What facilities are there at Mountshannon, Lough Derg?

Mountshannon, Lough Derg has toilets, parking, accessible entry. Facility information is published by the Environmental Protection Agency (Ireland).

Mountshannon, Lough Derg

Good to go

No current pollution alerts — always assess conditions yourself.

Checked 35 minutes ago against the Environmental Protection Agency (Ireland) · data last changed 2 months ago.

About this spot

Mountshannon is situated around a series of three small piers to the east and adjacent to the main south-facing harbour. On the shore of Lough Derg, Mountshannon is an important area for wildlife in particular birds and fish species. There is an area of swamp vegetation along the shore. There is a slow and gradual deepening of the water and the mean depth overall of the water in Lough Derg has been estimated to be 7.6m. Activities include bathing, boating, angling and wind-surfing.

This spot’s record

Mountshannon, Lough Derg is in Clare, about 17 km from Nenagh. Mountshannon, Lough Derg has been rated Excellent in each of the 4 bathing seasons classified by the Environmental Protection Agency (Ireland), 2022 through 2025. Across the 12 most recent samples published by the Environmental Protection Agency (Ireland), E. coli counts ranged from 10 to 30 per 100 ml. The highest was taken on 2 June 2026. 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.

Recent bacterial sample results for this bathing water
Date	E. coli	Enterococci	Assessment
1 Sept	10	10	Excellent
25 Aug	10	10	Excellent
11 Aug	10	10	Excellent
21 Jul	10	10	Excellent
14 Jul	10	10	Excellent
7 Jul	10	10	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.

Quality over the last 4 years

Excellent2022
Excellent2023
Excellent2024
Excellent2025

This water has been rated Excellent in each of the last 4 years.

Facilities & access

Lifeguard: Yes
Parking: Yes
Toilets: Yes
Accessible entry: YesFootpath to pier
Dogs: YesBefore 11 am and after 6 pm during summer season, otherwise not allowed at all times onto beach during summer season.
Public transport: No

Official water quality

Classified Excellent in 2025.

Mountshannon, Lough Derg is classified as achieving Excellent Water Quality in 2025 based on the assessment of bacteriological results for the period 2022 to 2025. Mountshannon, Lough Derg has achieved an Excellent Water Quality rating for the four consecutive years 2022 to 2025. Annual water quality ratings are generally calculated using monitoring results over a four-year period and are assessed against stringent bacterial limits to protect bather health.

Official bathing-water profile

What Excellent, Good, Sufficient and Poor actually mean

Common questions

Can you swim at Mountshannon, Lough Derg right now?: Mountshannon, Lough Derg is currently marked "Good to go". No current pollution alerts — always assess conditions yourself. This reflects the latest data published by the Environmental Protection Agency (Ireland). Conditions change quickly — always assess the water yourself before entering.
What is the water quality like at Mountshannon, Lough Derg?: the Environmental Protection Agency (Ireland) classified Mountshannon, Lough Derg as Excellent in 2025. Classifications are a rolling assessment of bacterial samples taken over four bathing seasons, measured against E. coli and intestinal enterococci limits set by the EU Bathing Water Directive.
Is there a swimming ban or warning at Mountshannon, Lough Derg?: There are no active bathing restrictions published by the Environmental Protection Agency (Ireland) for Mountshannon, Lough Derg. That is not a guarantee of safety — assess conditions yourself.
Is there a lifeguard at Mountshannon, Lough Derg?: Yes — Mountshannon, Lough Derg has lifeguard cover. Cover is seasonal; check locally before relying on it.
What facilities are there at Mountshannon, Lough Derg?: Mountshannon, Lough Derg has toilets, parking, accessible entry. Facility information is published by the Environmental Protection Agency (Ireland).

This spot is also in

Get told when this changes

We’ll email you when the swim status at Mountshannon, Lough Derg 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 Nenagh — about 17 km away.