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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,904 companies indexed · Last updated: today
DirectoryRetail & CommerceDIY storeSt. MoritzOBAG Graubünden AG
OBAG Graubünden AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of OBAG Graubünden AG is sewer cleaning and pipe cleaning, including services such as emergency suction, flushing, sewer TV, street cleaning and tightness testing.

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Service area

Offering

Products & services

Industry:DIY store
✓ Offered7
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OBAG Graubünden AG

Sewer cleaning
Sewer and pipe cleaning, ventilation of wastewater systems, cleaning of sewer, rainwater and seepage lines, roof drains, house installations, sludge collectors, street manholes, septic tanks, pump pits, and oil and grease separators.
Emergency service
24/7 on-call service for blockages, flooding and other sewerage problems in Graubünden and surrounding areas, with phone-based deployment coordination.
CCTV sewer inspections
Professional CCTV recordings and inspections of sewers with reports for GEP, for inspecting main drainage lines, identifying damage and clarifying conditions before repair or rehabilitation.
Vacuum suction works
Emptying and suctioning of sludge collectors, septic tanks, pump pits, street soakaway manholes, biomass tanks, and grease and oil separators using vacuum suction vehicles and suction trailers.
High-pressure pipe flushing
High-pressure flushing of pipes and house service lines against blockages, limescale and root intrusion; on-site using a high-pressure tracked unit, if needed combined with suction.
Road surface cleaning
Cleaning of roads, underground garages and squares with pressure of over 100 bar, for example after storms, events or on construction access roads.
Leak-tightness testing
Leak-tightness testing of newly installed and existing main drainage lines during construction projects or partial rehabilitation, for quality assurance, groundwater protection and compliance with standards.
Trust & reputation

ranQ Trust Score of OBAG Graubünden AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of November 2026

OBAG Graubünden AG scores 61.5 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.69.624%
  • 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.35.310%
  • 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.70.08%
OBAG Graubünden 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%
OBAG Graubünden AG scores 86.7 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).86.722%
OBAG Graubünden AG scores 2.3 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 35.2.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

OBAG Graubünden AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 4.7 out of 5 stars from 3 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of November 2026.

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

Reviews

Aggregated rating

Aggregated rating
4.7
of 5

Aggregated from 3 reviews across all connected sources

Sources
GGoogle4.73
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Via Surpunt 56
7500 St. Moritz

At a glance

Legal form
Corporation
UID
CHE-107.026.739
Founded
1974 · 52 years
Last commercial register change
June 10, 2026
Employees
11 to 20

Active in 1 of 26 cantons · 1 municipality

  • GRSt. Moritz
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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