PFAS in Jämsä's tap water: 0.2 ng/L for the sum of 20 PFAS, below the 100 ng/L legal limit
Last PFAS check: · Source: Ruokavirasto / Syke
PFAS in drinking water
0.2 % of the EU legal limit for 20 PFAS
PFAS-4 not published here yet
More about this result
PFAS-4 is not published for this supply area
Sum of 20 PFAS: 0.2 ng/L (0.0002 µg/L), 0.2 % of the 100 ng/L legal limit, sampled 11 February 2025.
Values from Länkipohjan vedenjakelualue, Jämsän vesi, one of 6 supply areas serving Jämsä; the others are in the table.
The four EFSA compounds (PFOA, PFOS, PFNA, PFHxS) are not reported separately, so the 4 ng/L health benchmark and this site's 0.5 ng/L benchmark cannot be checked.
PFAS-20 monitoring is mandatory since 12 January 2026; 158 of 287 municipalities have a published result so far.
Within the legal limit. This source does not report the four main PFAS separately.
Water report for Jämsä
Tell me when a PFAS-4 value is published for Jämsä. Until then, receive the free water report and new PFAS-20 results, at most once a week.
- Last PFAS test
- 11 February 2025
- Water supplier
- Jämsän kaupunki, Himos-Infra Oy
In Jämsä, the latest published PFAS-20 result is 0.2 ng/L (0.0002 µg/L), below the EU legal limit of 100 ng/L, sampled 11 February 2025. The four EFSA compounds (PFAS-4) are not itemised, so this water cannot be compared with the 0.5 ng/L health benchmark used by pfasnearme. Source: Ruokavirasto (VATI) / Suomen ympäristökeskus Syke, Juomavesidirektiivi-rajapinta, CC BY 4.0, data retrieved 28 September 2026.
Details and sources
What the latest check found
The authorities have not published an overall verdict for this water.
Values to watch
These results are close to their legal limit, or over it.
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Fluoride | 0.92 mg/L | ≤ 1.5 mg/L | within the limit |
See all 30 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Sum of 20 PFAS · Jämsän vedenjakelualue, Jämsän vesi · 11 February 2025 | not quantified | ≤ 0.1 µg/L | within the limit |
| Sum of 20 PFAS · Jämsänkosken vedenjakelualue, Jämsän vesi · 11 February 2025 | not quantified | ≤ 0.1 µg/L | within the limit |
| Sum of 20 PFAS · Juokslahden vedenjakelualue, Jämsän vesi · 11 February 2025 | not quantified | ≤ 0.1 µg/L | within the limit |
| Sum of 20 PFAS · Kuoreveden vedenjakelualue, Jämsän vesi · 11 June 2025 | not quantified | ≤ 0.1 µg/L | within the limit |
| Nitrate | 0.055 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0.0066 mg/L | ≤ 0.5 mg/L | within the limit |
| Lead | 0.34 µg/L | ≤ 10 µg/L | within the limit |
| Copper | 0.07 mg/L | ≤ 2 mg/L | within the limit |
| Nickel | 0.17 µg/L | ≤ 20 µg/L | within the limit |
| Arsenic | 0.23 µg/L | ≤ 10 µg/L | within the limit |
| Cadmium | <0.01 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | 0.26 µg/L | ≤ 50 µg/L | within the limit |
| Uranium | 1.6 µg/L | ≤ 30 µg/L | within the limit |
| Fluoride | 0.92 mg/L | ≤ 1.5 mg/L | within the limit |
| Escherichia coli | <1 n/(100mL) | ≤ 0 n/(100mL) | no verdict |
| Enterococci | <1 n/(100mL) | ≤ 0 n/(100mL) | no verdict |
| Coliform bacteria | <1 n/(100mL) | ≤ 0 n/(100mL) | no verdict |
| Clostridium perfringens | <1 n/(100mL) | ≤ 0 n/(100mL) | no verdict |
| pH | 7.9 | 6.5–9.5 pH | within the limit |
| Water hardness | 0.54 mmol/L | no limit | for reference |
| Electrical conductivity | 350 µS/cm | ≤ 2,500 µS/cm | within the limit |
| Chloride | 1.2 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 15 mg/L | ≤ 250 mg/L | within the limit |
| Sodium | 53 mg/L | ≤ 200 mg/L | within the limit |
| Iron | 13 µg/L | ≤ 200 µg/L | within the limit |
| Manganese | 2.1 µg/L | ≤ 50 µg/L | within the limit |
| Aluminium | <5 µg/L | ≤ 200 µg/L | within the limit |
| Ammonium | 0.008 mg/L | ≤ 0.5 mg/L | within the limit |
| Oxidisability (permanganate index) | <0.5 mg O2/L | ≤ 5 mg O2/L | within the limit |
| Calcium | 7,100 mg/L | no limit | for reference |
Frequently asked questions
Is tap water in Jämsä safe to drink?
All the values shown here (20 May 2026) are within the legal limits, but the authorities have not published an overall verdict for this water. The four EFSA compounds (PFAS-4) are not itemised, so this water cannot be compared with the 0.5 ng/L health benchmark used by pfasnearme.
How high are PFAS levels in Jämsä's drinking water?
The total of 20 PFAS ("forever chemicals") was last measured at 0.2 ng/L. The EU limit is 100 ng/L, so this water is at 0.2 % of the limit. (below the EU limit)
Which PFAS limits apply in Finland?
Finland applies decree STM 1352/2015 of the Ministry of Social Affairs and Health as amended by 2/2023: "PFAS-aineiden summa" (sum of 20 PFAS) at most 0.10 µg/l, that is 100 ng/L, applied from 12 January 2026. There is no national PFAS-4 limit; Sweden applies 4 ng/L. This site's 0.5 ng/L benchmark is stricter than both.
How hard is the water in Jämsä?
The water hardness in Jämsä is 0.5 mmol/L (soft). This mainly matters for household appliances and detergent dosing, not for health.
Where does this data come from?
All values come from official publications: Ruokavirasto (VATI) / Suomen ympäristökeskus Syke, Juomavesidirektiivi-rajapinta. Retrieved on 28 September 2026.
Nearby cities
The closest to Jämsä on this site.
Data source
- Ruokavirasto (VATI) / Suomen ympäristökeskus Syke, Juomavesidirektiivi-rajapinta
- https://rajapinnat.ymparisto.fi/api/juomavesidirektiivi-vati/swagger/v1/swagger.json
- License
- CC BY 4.0
- Retrieved
- 28 September 2026
- Supply networks
- Jämsän vedenjakelualue, Jämsän vesi, Jämsänkosken vedenjakelualue, Jämsän vesi, Himos-Infra vedenjakelualue, Kuoreveden vedenjakelualue, Jämsän vesi, Länkipohjan vedenjakelualue, Jämsän vesi, Juokslahden vedenjakelualue, Jämsän vesi
Lähde: Ruokavirasto (VATI) / Suomen ympäristökeskus Syke, Juomavesidirektiivi-rajapinta, CC BY 4.0, haettu 2026-09-28. Kunnassa on 6 vedenjakelualuetta VATI-rekisterissä; kaikki on lueteltu sivulla. Sivun PFAS-luku on alueelta "Länkipohjan vedenjakelualue, Jämsän vesi" (korkein mitattu PFAS-yhdisteiden summa kunnan 5 PFAS-tuloksesta); muut alueet ovat taulukossa. PFAS-yhdisteiden summan (20 yhdistettä) raja-arvo on 0,10 µg/l (STM 1352/2015, muutos 2/2023, sovellettu 12.1.2026 alkaen). Neljän EFSA-yhdisteen summaa (PFAS-4) ei julkaista. Tulos "0" tai "Ei todettu" tarkoittaa, ettei PFAS-yhdisteitä havaittu; laboratorio ei ilmoittanut määritysrajaa. Rajapinta julkaisee kunkin muuttujan uusimman tuloksen; taulukon arvo on korkein kunnan alueilta viimeisten 24 kuukauden aikana julkaistu tulos (vanhempi tulos vain, jos uudempaa ei ole), alue on merkitty riville.
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.