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LakeQuality

Lakes in Italy

Find lakes in Italy: 673 designated lake bathing waters classified under the EU Bathing Water Directive. 595 are rated Excellent for 2025.

The same country also has official phosphorus, chlorophyll-a, and Secchi for 55 named lakes, sampled 2018–2025. Those are nutrient and clarity readings, a different measurement from the Directive's bacteria class.

Updated 2025

Excellent: 595Good: 49Sufficient: 16Poor: 5Not classified: 8

Lake map

Map shows 728 lakes with coordinates

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Best-rated lakes to swim in Italy

Officially classified Excellent for the 2025 bathing season, ranked by how often that class has held. Full best-lakes list →

  1. 1200 Mt Dx Museo NaviExcellent · Excellent 11/11 seasons
  2. 1300 Mt Dx Punta Il PizzoExcellent · Excellent 11/11 seasons
  3. 200 Mt Dx la BussolaExcellent · Excellent 11/11 seasons
  4. 2000 Mt Dx Museo NaviExcellent · Excellent 11/11 seasons
  5. 250 Mt Dx Foce Fosso CasacciExcellent · Excellent 11/11 seasons
  6. 250 Mt Dx Foce Fosso ConcaExcellent · Excellent 11/11 seasons
  7. 250 Mt Dx Foce Fosso Dei QuadriExcellent · Excellent 11/11 seasons
  8. 250 Mt Dx Foce Fosso del DiavoloExcellent · Excellent 11/11 seasons
  9. 250 Mt Dx Foce Fosso della FioraExcellent · Excellent 11/11 seasons
  10. 250 Mt Dx Foce Fosso della MoleExcellent · Excellent 11/11 seasons
  11. 250 Mt Dx Foce Fosso Grotta RenaraExcellent · Excellent 11/11 seasons
  12. 250 Mt Dx Foce Fosso VicarelloExcellent · Excellent 11/11 seasons
  13. 250 Mt Sx Chiosco Piazzetta AnguillaraExcellent · Excellent 11/11 seasons
  14. 250 Mt Sx Foce Fosso CasacciExcellent · Excellent 11/11 seasons
  15. 250 Mt Sx Foce Fosso Dei QuadriExcellent · Excellent 11/11 seasons

Every rated bathing water in Italy

Places in Italy

Named lakes

LakePlaceTotal phosphorusChlorophyll-aSecchiYear
Diga del MolatoPiacenza20 µg/L——2025
Diga di MignanoPiacenza20 µg/L——2025
IdroscaloMilan7.0 µg/L—2.2 m2018
Invaso dell'AiaTerni40 µg/L—1.0 m2024
Invaso di ArezzoPerugia10 µg/L—3.0 m2024
Invaso di CorbaraTerni60 µg/L—1.0 m2024
Invaso di RidracoliForlì-Cesena10 µg/L——2025
Invaso di San LiberatoTerni40 µg/L—1.0 m2024
Invaso di ValfabbricaPerugia38 µg/L——2024
Laghetto del FrassinoVerona82 µg/L17 µg/L1.5 m2025
Lago BrasimoneBologna10 µg/L——2025
Lago del GalloSondrio8.5 µg/L—5.5 m2021
Lago del MisBelluno6.0 µg/L1.5 µg/L3.3 m2025
Lago di AllegheBelluno9.5 µg/L2.0 µg/L1.4 m2025
Lago di AlserioComo25 µg/L—2.0 m2021
Lago di Annone EstLecco19 µg/L—2.2 m2021
Lago di Annone OvestLecco24 µg/L—1.3 m2021
Lago di CadoreBelluno10 µg/L4.3 µg/L2.2 m2025
Lago di ComabbioVarese15 µg/L—3.0 m2021
Lago di ComoLecco12 µg/L—5.8 m2021
Lago di CorloBelluno9.0 µg/L5.0 µg/L3.4 m2025
Lago di EndineBergamo12 µg/L—2.8 m2021
Lago di FimonVicenza20 µg/L3.1 µg/L2.2 m2025
Lago di GannaVarese8.0 µg/L1.9 µg/L2.0 m2021
Lago di GardaVerona8.0 µg/L2.2 µg/L8.1 m2025
Lago di GarlateLecco13 µg/L—5.5 m2021
Lago di GhirlaVarese10 µg/L—4.9 m2021
Lago di IdroBrescia13 µg/L—4.0 m2021
Lago di IseoBrescia11 µg/L—4.0 m2021
Lago di LagoTreviso10 µg/L3.8 µg/L3.4 m2025
Lago di LuganoVarese13 µg/L—4.5 m2021
Lago di Mantova di MezzoMantua71 µg/L—0.8 m2021
Lago di Mantova InferioreMantua83 µg/L—0.8 m2021
Lago di Mantova SuperioreMantua78 µg/L11 µg/L1.1 m2021
Lago di MezzolaSondrio10 µg/L—3.1 m2021
Lago di MisurinaBelluno5.0 µg/L1.1 µg/L4.0 m2025
Lago di MontesplugaSondrio5.0 µg/L—6.5 m2021
Lago di MontorfanoComo25 µg/L—2.0 m2021
Lago di PalabioneSondrio8.0 µg/L—5.7 m2019
Lago di PalùSondrio8.0 µg/L—8.0 m2021
Lago di PianoComo15 µg/L—3.5 m2021
Lago di Pozzo di RivaSondrio67 µg/L—2.4 m2021
Lago di PusianoComo12 µg/L—3.3 m2021
Lago di Revine o Santa MariaTreviso14 µg/L7.0 µg/L2.8 m2025
Lago di Santa CaterinaBelluno6.0 µg/L0.70 µg/L2.0 m2025
Lago di Santa CroceBelluno5.5 µg/L2.4 µg/L3.0 m2025
Lago di SartiranaLecco92 µg/L15 µg/L1.0 m2021
Lago di SegrinoComo10 µg/L—3.3 m2021
Lago di SuvianaBologna10 µg/L——2023
Lago di TruzzoSondrio4.0 µg/L—20 m2018
Lago di VareseVarese27 µg/L—3.8 m2021
Lago MaggioreVarese5.5 µg/L2.3 µg/L5.8 m2020
Lago PiedilucoTerni40 µg/L—1.0 m2024
Lago TrasimenoPerugia40 µg/L—0.6 m2024
Palude di ColfioritoPerugia60 µg/L—0.5 m2024

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Frequently asked questions

Which lakes in Italy are best to swim in?
595 of 673 designated bathing waters in Italy are rated Excellent for 2025 under the EU Bathing Water Directive. That class measures E. coli and intestinal enterococci only — it is not a safety clearance.
Is it safe to swim in Italy lakes?
The official class is a bacteriological rating, not a safety clearance. It does not cover algal blooms, nutrients, water clarity, currents, or depth. Conditions change after heavy rain. Check local signage and the operator's current notices before entering the water.
How is lake water quality measured in Italy?
55 named lakes in Italy have official phosphorus, chlorophyll-a, and Secchi from the regional environmental agencies (ARPA Lombardia, ARPA Veneto, Arpae Emilia-Romagna, and ARPA Umbria), 2018–2025. These are the authority's own measurements, shown as reported.
Whose ratings do the Italy lake pages show?
The publishing authority's own. Pages for lakes in Italy show the values and classes that authority reports, with the season or year each was taken.

Lakes in other countries

Lakes in Europe

Directory of official lake water quality

Lake campgrounds in Europe

Rated bathing waters at campgrounds

Best lakes in Italy

Excellent-rated bathing waters

Campgrounds in Italy

Rated lake campgrounds

Clearest lakes in Italy

Named lakes ranked by Secchi

Lakes in Netherlands

Water quality for lakes in Netherlands

Lakes in Poland

Water quality for lakes in Poland

Lakes in Austria

Water quality for lakes in Austria

Lakes in Hungary

Water quality for lakes in Hungary

Lakes in Finland

Water quality for lakes in Finland

Lakes in Sweden

Water quality for lakes in Sweden

Lakes in Switzerland

Water quality for lakes in Switzerland

Lakes in Denmark

Water quality for lakes in Denmark

Where to stay near Italy

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Top-rated places to stay near Italy

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Source: European Environment Agency (EEA), Bathing Water Directive. CC-BY 4.0.

Official surface phosphorus, chlorophyll-a, and/or Secchi. Published as the authority reports it on this scale.

Monitoring: the regional environmental agencies (ARPA Lombardia, ARPA Veneto, Arpae Emilia-Romagna, and ARPA Umbria).