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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,904 companies indexed · Last updated: today
DirectoryEnergy & EnvironmentWaste disposalKaistenARA Kaisten AG
ARA Kaisten AG Logo
Verified· 4 sourcesTrust Score
Summary

About the company

The core activity of ARA Kaisten AG is the treatment of wastewater, in particular through the operation of the Ritanne wastewater treatment plant in Kaisten, as well as the utilization or disposal of residual materials. This also includes the operation and maintenance of parts of the sewer networks of the connected wastewater associations.

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Products & services

Industry:Waste disposal
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4.1/5

ARA Kaisten AG

✓ Offered4
Wastewater Treatment
Wastewater treatment for connected wastewater associations, the BASF Kaisten site and, if needed, other municipalities; operation of the Ritanne treatment plant and handling of residual materials.
Operation and Maintenance of Sewer Networks
Operation and maintenance of parts of the sewer networks of the connected associations, including technical support in the ARA Kaisten catchment area.
Operation of Treatment Processes
Mechanical and biological treatment processes with screening, grit removal, SBR and sludge treatment for wastewater cleaning and residual-material handling.
Guided Tours of the Treatment Plant
Free guided tours of the plant for groups and organisations from age nine, by prior registration, with staff explaining the operating processes.
Trust & reputation

ranQ Trust Score of ARA Kaisten AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 100% · As of November 2026

ARA Kaisten AG scores 65.3 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.65.024%
  • 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.55.910%
  • 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.78.08%
ARA Kaisten 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%
ARA Kaisten AG scores 88.3 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
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).88.322%
ARA Kaisten AG scores 26.7 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 35.3.44%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.50.04%
Qualifications+0.00

ARA Kaisten AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 4.3 out of 5 stars from 8 customer reviews. As of November 2026.

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

Reviews

Aggregated rating

Aggregated rating
4.3
of 5

Aggregated from 8 reviews across all connected sources

Sources
GGoogle4.38
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

July 28, 2026Media
ARA-Anschluss: Bauarbeiten in Frick starten
nau.ch
October 16, 2025Media
«Wir haben sogar einen leichten Vorsprung»
nfz.ch
November 29, 2024Media
ARA Kaisten: Bereit für die nächsten 20 Jahre
nfz.ch
November 27, 2024Media
«Das Einzugsgebiet hat sich fortlaufend vergrössert»: Kaister Kläranlage feiert Spatenstich für Erweiterungsbau
aargauerzeitung.ch
November 23, 2024Media
Die ARA Kaisten soll dank 23-Millionen-Investition fit für die nächsten 20 Jahre werden
aargauerzeitung.ch
September 2, 2018Media
In der ARA Kaisten ist eine anspruchsvolle Zeit zu Ende gegangen
aargauerzeitung.ch

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Location

Hardmattstrasse 434
5082 Kaisten
Opening hours
Mon
08:00 - 16:00
Tue
08:00 - 16:00
Wed
08:00 - 16:00
Thu
08:00 - 16:00
Fri
08:00 - 16:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-101.720.451
Founded
2001 · 25 years
Last commercial register change
May 11, 2026
Employees
11 to 20

Active in 1 of 26 cantons

  • AGAargau
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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