Bathing water quality in Helsinki-Uusimaa, Finland
Helsinki-Uusimaa has 70 official bathing waters in the EEA dataset for the 2025 season (39 lake, 30 coastal and 1 river). 75.7% were classified Excellent — 8.8 points below the 84.5% across Finland — and 1 was Poor. 39 sites have been Excellent in every season from 2015 to 2025.
Uimaveden laatu: Helsinki-Uusimaa
Helsinki-Uusimaa: 70 virallisesta EU-uimarannasta 75,7 % oli vuonna 2025 ”erinomainen”; luokituksen ”huono” saaneita: 1.
official bathing waters
Excellent in 2025
Poor in 2025
Map of official bathing waters in Helsinki-Uusimaa
Sea, lakes and rivers in Helsinki-Uusimaa
| Water type | Sites | Excellent | Good | Sufficient | Poor | Not classified |
|---|---|---|---|---|---|---|
| Coastal | 30 | 18 (60%) | 8 | 2 | 0 | 2 |
| Lake | 39 | 35 (89.7%) | 1 | 0 | 0 | 3 |
| River | 1 | 0 (0%) | 0 | 0 | 1 | 0 |
Coastal waters are assessed against stricter bacterial limits than lakes and rivers but are diluted far more; see how the classes are calculated.
Most consistent Excellent sites
39 sites were Excellent in all eleven seasons. Ordered by the length of the unbroken Excellent run ending in 2025; the first 24 are shown and every site is in the full list below.
- HAKLI 11 seasons
- HANIKKA 11 seasons
- HASSELHOLMEN 11 seasons
- HIETASEN RANTA 11 seasons
- KALLAHDENNIEMI 11 seasons
- KERAVANJARVI 11 seasons
- KLOBBEN 11 seasons
- KOKONNIEMEN MAAUIMALA 11 seasons
- KUUSIJARVI 11 seasons
- LAAJASALO 11 seasons
- LAAKSOLAHTI 11 seasons
- LAMMINJARVI 11 seasons
- LASITEHDAS 11 seasons
- LIESSAARI 11 seasons
- LUUKINJARVI 11 seasons
- MATINKYLA 11 seasons
- MUSTIKKAMAA 11 seasons
- MYLLYLAMPI 11 seasons
- OTALAMPI 11 seasons
- PILVIJARVI 11 seasons
- PUUJARVI 11 seasons
- PYHAJARVEN UIMARANTA 11 seasons
- RUSUTJARVI 11 seasons
- SAAKSI SAAKSJARVI 11 seasons
Rated Poor in 2025
For a Poor site the Bathing Water Directive requires management measures, including a bathing prohibition or advice against bathing, so check the authority before visiting.
- PIKKUKOSKI Poor in 5 of 11 classified seasons
Changes from 2024 to 2025
Improved (2)
- AURLAHTI Sufficient → Excellent
- ISO KALLAHTI Good → Excellent
Declined (5)
- PIKKUKOSKI Good → Poor
- HIETARANTA Excellent → Good
- JOENSUUN TILA Excellent → Good
- LAPPOHJA Excellent → Good
- PLAGEN Excellent → Good
How Helsinki-Uusimaa rated since 2015
Counts for the sites in today’s 2025 inventory; the Excellent share is calculated over classified sites only.
| Season | Classified | Excellent | Excellent share | Poor |
|---|---|---|---|---|
| 2025 | 65 | 53 | 81.5% | 1 |
| 2024 | 65 | 55 | 84.6% | 0 |
| 2023 | 65 | 51 | 78.5% | 2 |
| 2022 | 65 | 51 | 78.5% | 6 |
| 2021 | 65 | 50 | 76.9% | 4 |
| 2020 | 65 | 50 | 76.9% | 3 |
| 2019 | 64 | 52 | 81.3% | 1 |
| 2018 | 63 | 54 | 85.7% | 1 |
| 2017 | 64 | 57 | 89.1% | 1 |
| 2016 | 64 | 48 | 75% | 1 |
| 2015 | 64 | 51 | 79.7% | 1 |
Places with the most bathing waters in Helsinki-Uusimaa
Each site is matched to its nearest named place (GeoNames, within 8 km in a straight line), so beaches of one resort or lake shore can be compared together. Select a place to show only its sites in the full list.
| Place | Sites | Excellent | Poor |
|---|---|---|---|
| Hanko | 5 | 5 (100%) | 0 |
| Lohja | 4 | 3 (75%) | 0 |
| Lapinkylä | 3 | 3 (100%) | 0 |
| Tuusula | 3 | 3 (100%) | 0 |
| Box | 3 | 2 (66.7%) | 0 |
| Porvoo | 3 | 2 (66.7%) | 0 |
| Koukkuniemi | 2 | 2 (100%) | 0 |
| Ekenäs | 2 | 1 (50%) | 0 |
| Kulosaari | 2 | 1 (50%) | 0 |
All 70 official bathing waters in Helsinki-Uusimaa
Grouped by water type, alphabetical within each group. Open a site for its 2015–2025 history, nearby alternatives, weather forecast and the national profile link.
Download all 70 sites as CSV (classes 2015–2025, coordinates, nearest place; EEA data, CC BY 4.0)
Coastal 30 sites · 60% Excellent
- AURINKOLAHTI Good
- BELLEVUE · Hanko Excellent Excellent 9 seasons in a row
- BJORKUDDEN · Ingå Excellent Excellent 10 seasons in a row
- CAMPINGEN · Ekenäs Excellent Excellent 2 seasons in a row
- GUMNAS · Pojo Good
- HANIKKA · Soukka Excellent Excellent 11 seasons in a row
- HAUKILAHTI · Koukkuniemi Excellent Excellent 9 seasons in a row
- HIETARANTA · Etu-Töölö Good Excellent → Good since 2024
- ISO KALLAHTI · Meri-Rastila Excellent Good → Excellent since 2024
- KALLAHDENNIEMI · Kallahti Excellent Excellent 11 seasons in a row
- KIVENLAHTI Excellent Excellent 9 seasons in a row
- KIVINOKAN UIMARANTA · Kulosaari Not classified
- KLOBBEN · Laurinlahti Excellent Excellent 11 seasons in a row
- KNIPAN · Ekenäs Good
- LAAJASALO · Yliskylä Excellent Excellent 11 seasons in a row
- LAPPOHJA Good Excellent → Good since 2024
- LAUTTASAARI Good
- MARJANIEMI Sufficient
- MARSAN · Hanko Excellent Excellent 2 seasons in a row
- MATINKYLA · Koukkuniemi Excellent Excellent 11 seasons in a row
- MUNKKINIEMI · Talinranta Good
- MUSTIKKAMAA · Kulosaari Excellent Excellent 11 seasons in a row
- PLAGEN · Lovisa Good Excellent → Good since 2024
- PLAGEN · Hanko Excellent Excellent 9 seasons in a row
- PUOTILAN UIMARANTA · Puotila Not classified
- RASTILA Sufficient
- SLAKTIS · Hanko Excellent Excellent 6 seasons in a row
- TULLINIEMI ETELA · Hanko Excellent Excellent 11 seasons in a row
- TUORINNIEMI · Herttoniemenranta Excellent Excellent 3 seasons in a row
- WESTEND Excellent Excellent 3 seasons in a row
Lake 39 sites · 89.7% Excellent
- AURLAHTI · Lohja Excellent Sufficient → Excellent since 2024
- HAKLI · Tuusula Excellent Excellent 11 seasons in a row
- HASSELHOLMEN · Porvoo Excellent Excellent 11 seasons in a row
- HIETASEN RANTA · Pornainen Excellent Excellent 11 seasons in a row
- JOENSUUN TILA · Box Good Excellent → Good since 2024
- KERAVANJARVI Excellent Excellent 11 seasons in a row
- KOKONNIEMEN MAAUIMALA · Porvoo Excellent Excellent 11 seasons in a row
- KUUSIJARVI · Päiväkumpu Excellent Excellent 11 seasons in a row
- LAAKSOLAHTI Excellent Excellent 11 seasons in a row
- LAMMINJARVI · Lapinkylä Excellent Excellent 11 seasons in a row
- LASITEHDAS Excellent Excellent 11 seasons in a row
- LIESSAARI · Lohja Excellent Excellent 11 seasons in a row
- LUUKINJARVI · Kalajärvi Excellent Excellent 11 seasons in a row
- MOISION UIMARANTA · Lohja Not classified
- MYLLYJARVEN UIMARANTA ETELA · Grundbacka Not classified
- MYLLYLAMPI Excellent Excellent 11 seasons in a row
- OITTAA · Karhusuo Excellent Excellent 2 seasons in a row
- OTALAMPI · Ojakkala Excellent Excellent 11 seasons in a row
- PALONIEMI · Lohja Excellent Excellent 7 seasons in a row
- PILVIJARVI · Box Excellent Excellent 11 seasons in a row
- PUUJARVI · Karjalohja Excellent Excellent 11 seasons in a row
- PYHAJARVEN UIMARANTA · Karkkila Excellent Excellent 11 seasons in a row
- RUSUTJARVI · Tuusula Excellent Excellent 11 seasons in a row
- SAAKSI SAAKSJARVI · Röykkä Excellent Excellent 11 seasons in a row
- SAARI HUNTTIJARVI Excellent Excellent 11 seasons in a row
- STORSVIK · Siuntio Excellent Excellent 11 seasons in a row
- STORTRASK EVITSKOG · Lapinkylä Excellent Excellent 11 seasons in a row
- SVEDJA · Karis Excellent Excellent 11 seasons in a row
- SYVAJARVI · Kirkkonummi Excellent Excellent 11 seasons in a row
- TAASJARVI · Box Excellent Excellent 11 seasons in a row
- TAKAJARVI · Askola Excellent Excellent 11 seasons in a row
- TAMPAJA HAAPAJARVI · Lapinkylä Excellent Excellent 11 seasons in a row
- TERVAJARVI · Porvoo Not classified
- TERVANOKKA TUUSULANJARVI · Järvenpää Excellent Excellent 11 seasons in a row
- TIIRA VALKJARVI · Klaukkala Excellent Excellent 11 seasons in a row
- URHEILUPUISTO TUUSULA Excellent Excellent 11 seasons in a row
- USMINJARVI · Veikkari Excellent Excellent 11 seasons in a row
- VARIKKAA · Vihti Excellent Excellent 11 seasons in a row
- VETOKANNAS · Kaivoksela Excellent Excellent 11 seasons in a row
River 1 site · 0% Excellent · 1 Poor
- PIKKUKOSKI · Veräjämäki Poor Poor in 5 of 11 classified seasons
Compared with other regions in Finland
| # | Region | Sites | Excellent | Poor |
|---|---|---|---|---|
| 1 | Pohjois-Karjala | 23 | 100% | 0 |
| 2 | Keski-Suomi | 19 | 100% | 0 |
| 3 | Pirkanmaa | 35 | 94.3% | 0 |
| 4 | Pohjois-Pohjanmaa | 19 | 89.5% | 0 |
| 5 | Southwest Finland (Varsinais-Suomi) | 18 | 88.9% | 0 |
| 6 | Helsinki-Uusimaa | 70 | 75.7% | 1 |
| 7 | Pohjanmaa | 18 | 44.4% | 1 |
Regions with at least 15 official bathing waters. Size, water type and how densely sites are designated differ, so the table is context rather than a verdict.
Quick answers
- How many bathing waters in Helsinki-Uusimaa were rated Excellent in 2025?
- 53 of 70 (75.7%) in the official EEA 2025 classification; 9 were Good, 2 Sufficient and 1 Poor, and 5 had no class. That ranks Helsinki-Uusimaa 6 of 7 Finland regions by Excellent share.
- Which beaches and lakes in Helsinki-Uusimaa have the best long-term record?
- 39 sites were Excellent in every season from 2015 to 2025, for example HAKLI, HANIKKA, HASSELHOLMEN. See the ranking.
- Which places in Helsinki-Uusimaa have the most official bathing waters?
- Hanko (5, 100% Excellent), Lohja (4, 75% Excellent), Lapinkylä (3, 100% Excellent). See the place table; places are the nearest named settlement to each site.
- Were any bathing waters in Helsinki-Uusimaa rated Poor?
- Yes, 1: PIKKUKOSKI.
- Where do I check whether swimming is allowed today?
- On Uimavesi (LVV) (Permit and Supervision Agency (LVV) and municipal health-protection authorities). Temporary bans, pollution alerts and closures are published there and on signs at the water, not in the annual EEA class.
Finland overview · All regions of Finland · Bathing waters near Helsinki · Bathing season dates
Sources and method
Bathing-water records: European Environment Agency (EEA), data and coordinates reported by Finland, licensed CC BY 4.0. Region and area boundaries: Eurostat NUTS 2024 (© EuroGeographics for the administrative boundaries). Place names: GeoNames (CC BY 4.0). A site belongs to the area that contains its reported coordinates; a site up to 10 km off the generalised coastline is placed in the nearest area of Finland. Counts, shares and rankings are calculated by BathingWaterFinder from the official records.