PFAS in Harku vald's tap water: under 4 ng/L, none of the four main PFAS detected
Last PFAS check: · Source: Terviseamet
PFAS in drinking water
No PFAS detected
The lab sees nothing below 4 ng/L, 8 times our benchmark of 0.5 ng/L. Water above our benchmark would pass this check unnoticed.
0.5 ng/L is our benchmark, not an official limit. Same EFSA method as Sweden, Denmark and the Netherlands, but stricter. It's a yearly average, compared here with the latest check.
More about this result
The US also limits PFOA and PFOS to 4 ng/L each, per substance.
The lab detects each of the four substances from 1 ng/L upward. None reached that limit, so their total is below 4 ng/L rather than zero.
checked on 19 November 2025
20 PFAS (see each substance)
| PFAS substance | Value |
|---|---|
| Perfluorobutaanhape (PFBA) | <0.001 µg/L |
| Perfluorobutaansulfoonhape (PFBS) | <0.001 µg/L |
| Perfluorodekaanhape (PFDA) | <0.001 µg/L |
| Perfluorodekaansulfoonhape (PFDS) | <0.001 µg/L |
| Perfluorododekaanhape (PFDoDA) | <0.001 µg/L |
| perfluorododekaansulfoonhape (PFDoDS) | <0.001 µg/L |
| Perfluoroheksaanhape (PFHxA) | <0.001 µg/L |
| Perfluoroheksaansulfoonhape (PFHxS) | <0.001 µg/L |
| Perfluoroheptaanhape (PFHpA) | <0.001 µg/L |
| Perfluoroheptaansulfoonhape (PFHpS) | <0.001 µg/L |
| Perfluorononaanhape (PFNA) | <0.001 µg/L |
| perfluorononaansulfoonhape (PFNS) | <0.001 µg/L |
| Perfluorooktaanhape (PFOA) | <0.001 µg/L |
| perfluorooktaansulfoonhape (PFOS) | <0.001 µg/L |
| Perfluoropentaanhape (PFPeA) | <0.001 µg/L |
| Perfluoropentaansulfoonhape (PFPS) | <0.001 µg/L |
| perfluorotridekaanhape (PFTrDA) | <0.001 µg/L |
| perfluorotridekaansulfoonhape (PFTrDS) | <0.001 µg/L |
| Perfluoroundekaanhape (PFUnDA) | <0.001 µg/L |
| perfluoroundekaansulfoonhape (PFUnDS) | <0.001 µg/L |
None found. The lab sees nothing below 4 ng/L, so our 0.5 ng/L benchmark cannot be checked.
Water report for Harku vald
Get new PFAS results for Harku vald, with a short explanation. At most one update a week, only when there's something new.
- EU legal limit
- none detected sum of 20 PFAS below the detection limit, limit 100 ng/L
- Last PFAS test
- 19 November 2025
- Water supplier
- OÜ Strantum
In Harku vald, none of the 4 most closely watched PFAS (PFAS-4) was detected at the latest PFAS check on 19 November 2025. The total is below 4 ng/L, the sum of the detection limits and 8 times our 0.5 ng/L benchmark. Sum of 20 PFAS: <0.001 µg/L, below the EU legal limit (100 ng/L). Source: Terviseamet, veeterviseohutuse infosüsteem (VTI) avaandmed, veevargi_veeproovid_2025.xml.
Details and sources
What the latest check found
At the latest check, the water was within every limit tested.
Values to watch
These results are close to their legal limit, or over it.
| What was tested | Value | Limit | Status |
|---|---|---|---|
| Fluoride | 0.76 mg/L | ≤ 1.5 mg/L | within the limit |
See all 33 test results
| What was tested | Value | Limit | Status |
|---|---|---|---|
| PFAS-4 (PFOA + PFOS + PFNA + PFHxS) · Muraste veevärk · 19 November 2025 | <0.004 µg/L | ≤ 0.004 µg/L | within the limit |
| PFAS-4 (PFOA + PFOS + PFNA + PFHxS) · Tiskre piirkond · 19 November 2025 | <0.004 µg/L | ≤ 0.004 µg/L | within the limit |
| PFAS-4 (PFOA + PFOS + PFNA + PFHxS) · Vääna-Jõesuu ja Viti, Hiie prk piirkond · 19 November 2025 | <0.004 µg/L | ≤ 0.004 µg/L | within the limit |
| PFAS-4 (PFOA + PFOS + PFNA + PFHxS) · Viti ja Vääna-Jõesuu, Roksoni prk piirkond · 19 November 2025 | <0.004 µg/L | ≤ 0.004 µg/L | within the limit |
| Sum of 20 PFAS · Muraste veevärk · 19 November 2025 | <0.001 µg/L | ≤ 0.1 µg/L | within the limit |
| Sum of 20 PFAS · Tiskre piirkond · 19 November 2025 | <0.001 µg/L | ≤ 0.1 µg/L | within the limit |
| Sum of 20 PFAS · Vääna-Jõesuu ja Viti, Hiie prk piirkond · 19 November 2025 | <0.001 µg/L | ≤ 0.1 µg/L | within the limit |
| Sum of 20 PFAS · Viti ja Vääna-Jõesuu, Roksoni prk piirkond · 19 November 2025 | <0.001 µg/L | ≤ 0.1 µg/L | within the limit |
| Nitrate | 0.5 mg/L | ≤ 50 mg/L | within the limit |
| Nitrite | 0.01 mg/L | ≤ 0.5 mg/L | within the limit |
| Lead | 0.4 µg/L | ≤ 10 µg/L | within the limit |
| Copper | 0.014 mg/L | ≤ 2 mg/L | within the limit |
| Nickel | 2 µg/L | ≤ 20 µg/L | within the limit |
| Arsenic | 0.2 µg/L | ≤ 10 µg/L | within the limit |
| Cadmium | 0.2 µg/L | ≤ 5 µg/L | within the limit |
| Chromium | 0.4 µg/L | ≤ 50 µg/L | within the limit |
| Uranium | 0.4 µg/L | ≤ 30 µg/L | within the limit |
| Fluoride | 0.76 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 |
| Colony count at 22 °C | 3 n/mL | no limit | for reference |
| pH | 7.8 pH | 6.5–9.5 pH | within the limit |
| Electrical conductivity | 628 µS/cm | ≤ 2,500 µS/cm | within the limit |
| Chloride | 131 mg/L | ≤ 250 mg/L | within the limit |
| Sulphate | 27 mg/L | ≤ 250 mg/L | within the limit |
| Sodium | 51.2 mg/L | ≤ 200 mg/L | within the limit |
| Iron | 12 µg/L | ≤ 200 µg/L | within the limit |
| Turbidity | 0.3 NTU | no limit | for reference |
| Manganese | 3 µg/L | ≤ 50 µg/L | within the limit |
| Aluminium | 8 µg/L | ≤ 200 µg/L | within the limit |
| Ammonium | 0.05 mg/L | ≤ 0.5 mg/L | within the limit |
| Oxidisability (permanganate index) | 1.8 mg O2/L | ≤ 5 mg O2/L | within the limit |
Frequently asked questions
Is tap water in Harku vald safe to drink?
Yes. At the check on 19 November 2025, the tap water in Harku vald was within every limit tested. “vastab nõuetele”
How high are PFAS levels in Harku vald's drinking water?
At the latest check the total of 20 PFAS ("forever chemicals") was below the laboratory's reporting limit of 1 ng/L. The EU limit is 100 ng/L, so this water is under 1 % of the limit. (below the EU limit)
Does the water in Harku vald also meet the strictest limits in Europe?
As far as this check can tell, yes. None of the four compounds was quantified, so their total is below 4 ng/L, the sum of the laboratory's detection limits, and under Sweden's legal limit of 4 ng/L in force since 2026.
Which PFAS limits apply in Estonia?
Estonia transposes the EU Drinking Water Directive in regulation no. 61 of the Minister of Social Affairs (sotsiaalministri määrus nr 61): "PFASide summa" (sum of 20 PFAS) at most 0.10 µg/l, that is 100 ng/L. There is no national PFAS-4 limit; the health reference is EFSA's 4 ng/L. This site's 0.5 ng/L benchmark is stricter than both.
How hard is the water in Harku vald?
No hardness value is available for Harku vald in this source.
Where does this data come from?
All values come from official publications: Terviseamet, veeterviseohutuse infosüsteem (VTI) avaandmed, veevargi_veeproovid_2025.xml. Retrieved on 19 September 2026.
Same water network
Same distribution network as Harku vald, so in principle the same water.
Nearby cities
The closest to Harku vald on this site.
Data source
- Terviseamet, veeterviseohutuse infosüsteem (VTI) avaandmed, veevargi_veeproovid_2025.xml
- https://vtiav.sm.ee/index.php/?active_tab_id=A
- License
- Avaliku teabe seadus § 31 (avaandmed, litsentsi ei ole avaldatud)
- Retrieved
- 19 September 2026
- Supply networks
- Tabasalu ja Rannamõisa veevärk, Tiskre piirkond, Vääna-Jõesuu ja Viti, Hiie prk piirkond, Tiskre (Pillado), Muraste veevärk, Kasevälja elurajoon, Suurupi, Järvekalda, Harkujärve, Viti ja Vääna-Jõesuu, Roksoni prk piirkond, Harku alevik, Tutermaa ja Kumna veevärk, Otsa-Miko, Liikva külas ja Loopealse Sõrve külas, Tabasalu, Teelahkme piirkond (AS Tallinna Vesi ühisveevärgist), Vääna küla veevärk, Tuulepesa elurajooni veevärk, Veskivahi, Anora Estonia AS veevärk
16 veevärki, mille proovid on VTI registris. Lehe väärtused pärinevad veevärgist „Tabasalu ja Rannamõisa veevärk“, kus on PFAS-tulemused (analüüsitud veevärkidest suurima 20 PFASi summaga). PFAS-väärtused on avaldatud ilma „<“-märgita ja loetud labori määramispiiridena, mitte mõõtmistulemustena.
This site is a data project, not an official source. If in doubt, check with your water supplier or local authority.