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+ Testing laboratory T114 accredited by the FINAS accreditation service (SFS-EN ISO/IEC 17025) mentioned on the household customer page, a clear trust signal
+ Prices directly on the front page without going to the online shop, 6 packages (102–368 €) clearly listed already on the site's landing page
+ All sampling equipment, packaging and postage included in orders are free of charge; the customer does not pay delivery costs separately, which makes it easier to estimate the order total
+ FINAS-accredited testing laboratory T058 since 1996 (SFS-EN ISO/IEC 17025), a subsidiary of the City of Helsinki, with a history of over 130 years behind its reliability
+ Written expert statement included in the test certificate, compared against the limit values of Ministry of Social Affairs and Health (STM) Decree 401/2001, an interpretation that serves the customer
+ A written expert statement on water quality is always included with the test certificate, compared against the limit values of the STM decree, the most comprehensive explanation of all the packages in the comparison
We compared 6 Finnish FINAS-accredited laboratories that offer well water testing to private individuals. We scored them on 20 metrics: price findability, accreditation, postal sample service, interpretation of results and clarity of packages.
Well water quality can vary significantly between areas and seasons. A FINAS-accredited laboratory guarantees that the results are officially acceptable and comparable against the limit values of the Ministry of Social Affairs and Health (STM).
Prices of testing packages (euros) are clearly displayed on the website or in a downloadable price list without having to make contact (25), the laboratory is FINAS-accredited for household water and well water testing (or an equivalent national accreditation is mentioned on the page) (20), sampling equipment is sent or can be ordered by post to the customer's home address (no mandatory visit to the laboratory) (15), the test certificate includes a written expert statement or interpretation of the results compared with the limit values of the STM (Ministry of Social Affairs and Health) decree (15), turnaround time of results (days from sampling) is stated on the website (10), testing packages of different scope (e.g. narrow/basic/extensive) are named and their content clearly described on the site (10), laboratory contact details (phone and/or e-mail) are clearly found on the home page (5)
Transparency is 30% of the total points · these metrics make up its 100 points · the full formula and the other pillars
How to read the comparison correctly: Score measures how openly a company publishes its prices, terms and contact details, not what kind of service it gives its customers. Clear differences in points indicate a genuine difference: one states the price immediately, another only after logging in. Close scores should not be read as a ranking order, because every measurement has a margin of variation. The measurement accuracy and the entire calculation formula have been laid open in the methodology.
Customer experience is brought into the assessment separately. We also collect customer feedback and customer experiences about the companies through separate surveys. The results will be added later to the overall assessment, so that the Score tells not only about transparency but also about how customers experience the company's service.
What does well water contain? Well water is groundwater into which soil minerals, bacteria or heavy metals can dissolve. According to the STM decree, a basic analysis of well water is recommended every three years and an extensive analysis every six years.
FINAS accreditation. The Finnish national accreditation body FINAS supervises the competence of laboratories. An accredited laboratory meets the requirements of the SFS-EN ISO/IEC 17025 standard and its results are officially acceptable to the authorities.
Postal sample service. Most of the laboratories included in the comparison post sampling kits to your home, so the customer can take the sample themselves and return it to the laboratory. This makes the service usable throughout Finland.
Why these 6 laboratories? From among the Finnish Food Authority's FINAS-accredited laboratories, those with a public price list and a consumer-oriented service were selected for the comparison. Eurofins Ahma, Savo-Karjalan Ympäristötutkimus and SeiLab were excluded because of the lack of a public price list.
Every company is measured with the same public formula across four pillars: technical quality, transparency, reachability and AI quality assessment. A ranking cannot be bought, and you can see the origin of every point on the company's profile. Read the full methodology →
STM recommendation: basic test every three years, extensive test every six years. Also always when commissioning a new well or if the water quality changes.
The laboratory sends sampling equipment (bottles and instructions) by post to your home address. You take the sample yourself, fill in the referral and return the samples to the laboratory. The result is delivered electronically.
FINAS (Finnish Accreditation Service) is Finland's national accreditation body. An accredited laboratory has demonstrated its competence in accordance with the international ISO/IEC 17025 standard. The results of an accredited laboratory are accepted by the authorities.
A basic package usually includes microbiological tests (E. coli, enterococci, coliform bacteria), basic chemical determinations (pH, iron, manganese, oxidisability, hardness) and turbidity. An extended package also tests heavy metals, radon or other regional specifics.
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