PFAS in Laihia's tap water: sum of 20 PFAS below the reporting limit (1.5 ng/L)
Last PFAS check: · Source: Ruokavirasto / Syke
PFAS in drinking water
<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 below the laboratory's reporting limit (<1.5 ng/L), sampled 16 December 2025.
Values from Jakkulan Vedenhankinta osuuskunta, one of 6 supply areas serving Laihia; 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.
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- Last PFAS test
- 16 December 2025
- Water supplier
- Laihian kunta, Rudon Vesihuolto Oy, Torstilan vesihuolto-osuuskunta, Aronkylän Vesihuolto Oy, Jokikylän vesi- ja viemäriosuuskunta ja 1 muuta toimijaa
In Laihia, the latest published PFAS-20 result is below the laboratory's reporting limit (<1.5 ng/L), sampled 16 December 2025, under the EU legal limit of 100 ng/L. 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.
One routine sample was outside a limit: pH 6.1 on 20 July 2026 (limit 6.5–9.5 pH). This is a single result, not an official verdict on the supply.
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Nickel | 19 µg/L | ≤ 20 µg/L | within the limit |
| Fluoride | 1.5 mg/L | ≤ 1.5 mg/L | within the limit |
| pH | 6.1 | 6.5–9.5 pH | over the limit |
See all 30 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Sum of 20 PFAS · Aronkylän Vesihuolto Oy · 15 December 2025 | <0.0015 µg/L | ≤ 0.1 µg/L | within the limit |
| Sum of 20 PFAS · Jokikylän vesi-ja viemäriosuuskunta · 28 July 2025 | Ei todettu | ≤ 0.1 µg/L | within the limit |
| Sum of 20 PFAS · Poronkankaan Vesi oy / Laihian kunnan vesihuoltolaitos · 11 August 2025 | <0.0015 µg/L | ≤ 0.1 µg/L | within the limit |
| Sum of 20 PFAS · Rudon vesihuolto · 16 September 2025 | not quantified | ≤ 0.1 µg/L | within the limit |
| Sum of 20 PFAS · Torstilan vesihuolto-osuuskunta · 14 October 2025 | <0.0091 µg/L | ≤ 0.1 µg/L | within the limit |
| Nitrate | 1.4 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | <0.007 mg/L | ≤ 0.5 mg/L | within the limit |
| Lead | 3.3 µg/L | ≤ 10 µg/L | within the limit |
| Copper | 0.69 mg/L | ≤ 2 mg/L | within the limit |
| Nickel | 19 µg/L | ≤ 20 µg/L | within the limit |
| Arsenic | 0.15 µg/L | ≤ 10 µg/L | within the limit |
| Cadmium | 0.23 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | <2 µg/L | ≤ 50 µg/L | within the limit |
| Uranium | 0.31 µg/L | ≤ 30 µg/L | within the limit |
| Fluoride | 1.5 mg/L | ≤ 1.5 mg/L | within the limit |
| Escherichia coli | 0 n/(100mL) | ≤ 0 n/(100mL) | within the limit |
| Enterococci | 0 n/(100mL) | ≤ 0 n/(100mL) | within the limit |
| Coliform bacteria | 0 n/(100mL) | ≤ 0 n/(100mL) | within the limit |
| pH | 6.1 | 6.5–9.5 pH | over the limit |
| Water hardness | 0.77 mmol/L | no limit | for reference |
| Electrical conductivity | 915 µS/cm | ≤ 2,500 µS/cm | within the limit |
| Chloride | 140 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 23 mg/L | ≤ 250 mg/L | within the limit |
| Sodium | 7.3 mg/L | ≤ 200 mg/L | within the limit |
| Iron | 45 µg/L | ≤ 200 µg/L | within the limit |
| Manganese | 16 µg/L | ≤ 50 µg/L | within the limit |
| Aluminium | 86 µg/L | ≤ 200 µg/L | within the limit |
| Ammonium | <0.007 mg/L | ≤ 0.5 mg/L | within the limit |
| Oxidisability (permanganate index) | 2.3 mg O2/L | ≤ 5 mg O2/L | within the limit |
| Calcium | 28 mg/L | no limit | for reference |
Frequently asked questions
Is tap water in Laihia safe to drink?
The authorities have not published an overall verdict for this water. One routine sample was outside a limit: pH 6.1 on 20 July 2026 (limit 6.5–9.5 pH). This is a single result, not an official verdict on the supply. 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 Laihia's drinking water?
At the latest check the total of 20 PFAS ("forever chemicals") was below the laboratory's reporting limit of 1.5 ng/L. The EU limit is 100 ng/L, so this water is under 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 Laihia?
The water hardness in Laihia is 0.8 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 Laihia 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
- Poronkankaan Vesi oy / Laihian kunnan vesihuoltolaitos, Rudon vesihuolto, Torstilan vesihuolto-osuuskunta, Aronkylän Vesihuolto Oy, Jokikylän vesi-ja viemäriosuuskunta, Jakkulan Vedenhankinta osuuskunta
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 "Jakkulan Vedenhankinta osuuskunta" (uusin määritysrajan alle jäänyt PFAS-tulos kunnan 6 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. Nanogrammoina litrassa (ng/l) ilmoitetut PFAS-tulokset on muunnettu mikrogrammoiksi litrassa (µg/l). 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.