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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryEnergy & EnvironmentWater SupplyPrattelnHardwasser AG
Hardwasser AG Logo
Verified· 4 sourcesTrust Score
Summary

About the company

The company's core activity is the extraction, treatment and distribution of drinking water. The company operates a water treatment plant that extracts raw water from the Rhine and groundwater sources, treats it and supplies it to the population as drinking water. The treatment process includes various steps such as pre-treatment, rapid filtration, activated carbon filtration and UV disinfection. The company places great emphasis on water quality and carries out regular checks and laboratory tests to ensure the safety and quality of the drinking water.

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Products & services

Industry:Water Supply
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4.1/5

Hardwasser AG

✓ Offered
5
Drinking water production
Drinking water for the city of Basel and the surrounding area from Rhine water via pre-treatment, rapid filtration, percolation, groundwater abstraction, activated carbon filtration and UV disinfection.
Storage and distribution of drinking water
Storage in the Zentrale West reservoir and distribution to the drinking water networks, in particular to the city of Basel and the IWB network, and, if needed, to Birsfelden.
Water treatment
Raw water abstraction from the Rhine, pre-treatment, rapid filtration, percolation, groundwater abstraction and activated carbon filtration with UV disinfection for treating the water.
Drinking water quality and monitoring
Regular testing of drinking water by the cantonal laboratory and the IWB water laboratory, including bacteriological and chemical tests.
Plant visits
Plant visits for schools, associations and professionals; tours accompanied by Linie-e or, by arrangement, by Hardwasser staff.
Trust & reputation

ranQ Trust Score of Hardwasser AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 100% · As of October 2026

Hardwasser AG scores 65.5 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.72.524%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.61.010%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.50.08%
Hardwasser AG scores 89.3 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.100.012%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.70.07%
Hardwasser AG scores 86.7 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).86.722%
Hardwasser AG scores 37.9 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.65.74%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.10.04%
Qualifications+0.00

Hardwasser AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 4.6 out of 5 stars from 10 customer reviews. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
4.6
of 5

Aggregated from 10 reviews across all connected sources

Sources
GGoogle4.610
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

Press

Media

December 5, 2023Media
Studie zur Wasserqualität: Muttenzer Trinkwasser ist sauberer als Basler Wasser
bazonline.ch
January 29, 2021Media
Thomas Meier ist neuer Geschäftsführer der Hardwasser AG
bzbasel.ch

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Location

Rheinstrasse 87
4133 Pratteln

At a glance

Legal form
Corporation
UID
CHE-105.902.318
Founded
1956 · 70 years
Last commercial register change
July 27, 2026
Employees
11 to 20
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
100.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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