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Lake swimming in Luxembourg: 2025 water quality

Luxembourg reported 17 lake bathing waters for the 2025 season. 94.1% were classified Excellent — the same as the 94.1% for all 17 bathing waters in the country — and 0 were Poor. 9 sites have been Excellent in every season from 2015 to 2025.

17

lake bathing waters

94.1%

Excellent in 2025

0

Poor in 2025

Annual, not live: the 2025 class summarises several seasons of sampling. It does not show today’s pollution, algae or bans.
Where to check today's status in Luxembourg

Water Management Administration (AGE)

Official bathing season: Set each year (2026: 1 May – 30 September). Only a handful of lakes are designated, led by the Upper Sûre lake.

Annual EEA classes on this site do not show temporary bans, short-term pollution or algae alerts. Those are published by the competent authority. National information last checked 2026-11-01.

Eaux de baignade (AGE) →

Find the nearest Excellent lake to you →

Map of lake bathing waters

Luxembourg: 17 lake bathing waters by 2025 class. Positions from official EEA coordinates (no background map).
  • Excellent
  • Good
  • Sufficient
  • Poor
  • Not classified

How lake bathing waters in Luxembourg rated since 2015

Counts for the sites in today’s 2025 inventory; the Excellent share is calculated over classified sites only.

SeasonClassifiedExcellentExcellent sharePoor
2025171694.1%0
2024171482.4%0
2023171588.2%0
2022171376.5%0
2021171482.4%0
2020151493.3%1
20191212100%0
20181111100%0
20171212100%0
20161111100%0
20151111100%0

Most consistent Excellent lakes

9 sites were Excellent in all eleven seasons. Ordered by the length of the unbroken Excellent run ending in 2025.

  1. ETANGS REMERSCHEN-ZONE 1 11 seasons
  2. ETANGS REMERSCHEN-ZONE 3 11 seasons
  3. LAC DE LA HAUTE SURE-BURGFRIED 11 seasons
  4. LAC DE LA HAUTE SURE-FUUSSEFELD 11 seasons
  5. LAC DE LA HAUTE SURE-INSENBORN 11 seasons
  6. LAC DE LA HAUTE SURE-LIEFRANGE 11 seasons
  7. LAC DE LA HAUTE SURE-LULTZHAUSEN 11 seasons
  8. LAC DE LA HAUTE SURE-ROMMWISS 11 seasons
  9. LAC DE WEISWAMPACH-ZONE 2 11 seasons
  10. LAC DE WEISWAMPACH-ZONE 3 5 seasons
  11. LAC DE WEISWAMPACH-ZONE 4 5 seasons
  12. ETANGS REMERSCHEN-ZONE 2 3 seasons
  13. LAC D'ECHTERNACH - AUBERGE DE JEUNESSE 3 seasons
  14. ETANGS REMERSCHEN-ZONE 4 1 season
  15. LAC D'ECHTERNACH - PONTON GRANDE ÎLE 1 season
  16. LAC DE WEISWAMPACH-ZONE 1 1 season

Lakes rated Poor in 2025

None of the 17 lake bathing waters in Luxembourg was classified Poor in 2025.

Changes from 2024 to 2025

Improved (3)

Declined (1)

Near which major cities?

Sites within 60 km (straight line) of a major city covered by our city guides:

Lakes compared across Europe

#CountrySitesExcellentPoor
1Austria25496.9%1
2Finland21195.7%0
3Denmark12394.3%0
4Germany1,89391.8%3
5Lithuania8091.3%0
6Czechia6290.3%0
7Portugal4989.8%1
8Italy67388.4%5
9France84586.7%15
10Switzerland13586.7%4
11Sweden21082.4%6
12Estonia3080%0
13Spain10979.8%4
14Belgium7779.2%1
15Netherlands58770.5%26
16Slovakia4070%0
17Hungary24769.6%3
18Croatia3467.6%0
19Poland48960.1%5

Countries with at least 30 lake bathing waters. Networks differ in size and in how sites are designated, so this is a descriptive comparison, not a safety ranking.

Quick answers

How many lake bathing waters in Luxembourg are rated Excellent?
16 of 17 (94.1%) in the 2025 EEA classification.
Which lakes in Luxembourg have the best long-term record?
9 sites were Excellent in every season from 2015 to 2025, for example ETANGS REMERSCHEN-ZONE 1, ETANGS REMERSCHEN-ZONE 3, LAC DE LA HAUTE SURE-BURGFRIED. See the full list.
Can I check current conditions?
The annual class is not a live status. Current results and bans are published on Eaux de baignade (AGE). Each site page on BathingWaterFinder also shows a weather forecast, including heavy-rain warnings.

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