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2026 Statistics

Key Facts: Befähigungsprüfung Brunnenmeister Exam

€0

Examination Fee for 1st & 2nd Attempt across all Modules (100% Federally Funded since 2024)

WKO Meisterprüfungsstellen Gebührenbefreiung / BGBl. I Nr. 121/2023

NQR 7

National / European Qualifications Framework Level (Master's Degree Equivalent)

Brunnenmeister-Befähigungsprüfungsordnung / NQR-Gesetz

5 Modules

Examination Structure (Practical Project, Oral Exam, Written Calculations, Trainer Exam, Business Exam)

WKO Bundesinnung Bau Prüfungsordnung

§ 94 Z 5

Regulated Trade Listing in the Austrian Trade Code (Gewerbeordnung 1994)

Gewerbeordnung 1994 (GewO 1994)

WRG 1959

Austrian Water Act Governing Groundwater Extraction & Protection Zones (§ 34)

Wasserrechtsgesetz 1959 (BGBl. Nr. 215/1959 i.d.g.F.)

ÖNORM B 2601

Core Austrian Standard for Water Extraction — Well Planning, Construction & Operation

Austrian Standards International

60 Days

Groundwater Travel Time Defining Protection Zone II (Engere Schutzzone) per WRG § 34

WRG 1959 & DVGW / ÖWAV Technical Guidelines

0.03 m/s

Maximum Recommended Well Screen Entrance Velocity to Prevent Sand Ingress & Incrustation

ÖNORM B 2601 / Sichardt Formula

The Austrian Befähigungsprüfung Brunnenmeister is the top-tier NQR Level 7 master trade qualification administered by the WKO across 5 modules: practical project planning, oral commission exam, written engineering calculations, trainer certification (Ausbilderprüfung), and business management (Unternehmerprüfung).

Sample Befähigungsprüfung Brunnenmeister Practice Questions

Try these sample questions to test your Befähigungsprüfung Brunnenmeister exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1According to Darcy's Law (Darcy-Gesetz), what is the fundamental mathematical relationship governing laminar groundwater filtration flow through a saturated porous aquifer?

A.Q = k_f * I * A, where Q is discharge, k_f is the hydraulic conductivity coefficient, I is the hydraulic gradient (dh/L), and A is the cross-sectional flow area.

B.Q = k_f * (I^2) * A, where discharge increases quadratically with the hydraulic gradient regardless of flow velocity.

C.Q = (k_f * A) / I, where discharge is inversely proportional to the hydraulic gradient across the aquifer cross-section.

D.Q = sqrt(k_f * I) * A, representing turbulent velocity dispersion through cohesive clay layers.

Explanation: Darcy's Law states that the filtration discharge Q through a saturated porous medium is directly proportional to the hydraulic gradient I (I = dh/L), the cross-sectional area A, and the hydraulic conductivity coefficient k_f (Durchlässigkeitsbeiwert): Q = k_f * I * A (or Darcy velocity v_f = k_f * I). This linear relationship applies strictly to laminar flow conditions (Reynolds number Re < 1 to 10).

2What is the defining hydrogeological difference between an unconfined aquifer (ungespannter Grundwasserleiter) and a confined aquifer (gespannter Grundwasserleiter)?

A.An unconfined aquifer is bounded above by an impermeable rock layer, while a confined aquifer is open directly to atmospheric precipitation.

B.An unconfined aquifer has a free water table at atmospheric pressure (phreatic surface), whereas a confined aquifer is overlain by an impermeable confining bed (Aquitard/Grundwassernichtleiter) causing its piezometric surface (Druckspiegel) to rise above the aquifer roof.

C.An unconfined aquifer contains exclusively artesian groundwater that overflows the ground surface, whereas a confined aquifer contains only stagnant vadose water.

D.An unconfined aquifer has a hydraulic conductivity of zero, whereas a confined aquifer has infinite transmissivity.

Explanation: In an unconfined aquifer (ungespannter Grundwasserleiter), the upper boundary is a free groundwater table (freier Grundwasserspiegel) under atmospheric pressure. In a confined aquifer (gespannter Grundwasserleiter), the water-bearing stratum is confined beneath an impermeable or low-permeability layer (Deckschicht/Aquitard); upon penetration, the water level rises in a piezometer above the top of the aquifer to the piezometric head level (Druckspiegel). If this piezometric level exceeds the ground surface (GOK), it is termed artesian.

3A gravel aquifer has a hydraulic conductivity of k_f = 2.5 * 10^-3 m/s, a flow cross-section of A = 40 m², and a hydraulic gradient of I = 0.004. What is the total groundwater discharge (Q) passing through this cross-section per hour?

A.0.144 m³/h

B.14.4 m³/h

C.1.44 m³/h

D.144.0 m³/h

Explanation: Using Darcy's Law: Q = k_f * I * A. Q = (2.5 * 10^-3 m/s) * 0.004 * 40 m² = 0.0004 m³/s (which equals 0.4 l/s). Converting to cubic meters per hour: Q = 0.0004 m³/s * 3600 s/h = 1.44 m³/h.

4What are the core simplifying assumptions formulated by Dupuit (Dupuit-Annahmen) used to derive the steady-state well drawdown equation for unconfined aquifers?

A.Flow velocity is assumed strictly vertical, streamlines are parabolic, and hydraulic gradient equals the cosine of the phreatic slope.

B.The well screen is assumed completely impervious, forcing all groundwater to enter exclusively through the open bottom sump.

C.Groundwater flow is assumed fully turbulent throughout the entire cone of depression, and aquifer compressibility dominates over gravity drainage.

D.Flow lines are assumed horizontal, equipotential surfaces are vertical cylinders concentric to the well, and the hydraulic gradient equals the slope of the free water table (dh/dr) across the entire saturated thickness.

Explanation: The Dupuit assumptions for unconfined well flow state that: (1) groundwater streamlines are horizontal and parallel, (2) equipotential surfaces are vertical concentric cylinders, and (3) the hydraulic gradient is constant with depth and equals the slope of the phreatic surface (I = dh/dr). While this neglects vertical flow components near the well screen, it provides an exceptionally accurate analytical formula for steady-state radial well yield: Q = pi * k_f * (H² - h_w²) / ln(R/r_w).

5For a fully penetrating well in a confined aquifer with thickness M = 8.0 m, hydraulic conductivity k_f = 1.0 * 10^-3 m/s, drawdown s_w = (H - h_w) = 3.0 m, radius of influence R = 150 m, and well radius r_w = 0.30 m, what is the steady-state discharge Q calculated via the Dupuit-Thiem formula?

A.Approx. 24.3 l/s (87.4 m³/h)

B.Approx. 7.2 l/s (26 m³/h)

C.Approx. 76.5 l/s (275 m³/h)

D.Approx. 150.0 l/s (540 m³/h)

Explanation: The Dupuit-Thiem formula for a confined aquifer is Q = (2 * pi * k_f * M * s_w) / ln(R / r_w). Substituting the values: Q = (2 * pi * 0.001 m/s * 8.0 m * 3.0 m) / ln(150 / 0.30) = (0.1508) / ln(500) = 0.1508 / 6.2146 = 0.024265 m³/s = 24.27 l/s, which corresponds to approx. 87.4 m³/h (0.024265 * 3600).

6A pumping test in a confined aquifer with transmissivity T = k_f * M = 0.012 m²/s operates at a constant pumping rate of Q = 30 l/s (0.030 m³/s). If the radius of influence is R = 200 m, what is the theoretical steady-state drawdown s(r) at an observation piezometer located at distance r = 20 m from the pumping well?

A.s(r) = 0.15 m

B.s(r) = 0.92 m

C.s(r) = 2.45 m

D.s(r) = 4.80 m

Explanation: The Thiem equation for drawdown at distance r within the cone of depression is s(r) = (Q / (2 * pi * T)) * ln(R / r). Substituting: s(20) = (0.030 m³/s / (2 * pi * 0.012 m²/s)) * ln(200 / 20) = (0.030 / 0.0754) * ln(10) = 0.3979 * 2.3026 = 0.916 m approx. 0.92 m.

7Using the empirical Sichardt formula commonly applied in Austrian well engineering (R = 3000 * s * sqrt(k_f)), what is the estimated radius of influence (R) for an excavation dewatering well with drawdown s = 4.0 m in gravelly sand with k_f = 1.0 * 10^-4 m/s?

A.R = 30 m

B.R = 480 m

C.R = 120 m

D.R = 1200 m

Explanation: Sichardt's formula is R = 3000 * s * sqrt(k_f), where s is the drawdown in meters and k_f is in m/s. Substituting: R = 3000 * 4.0 * sqrt(1.0 * 10^-4) = 12000 * 0.01 = 120 meters.

8How is the specific capacity (Spezifische Ergiebigkeit, q) of a water well defined, and what does a gradual decline of q over years of operation typically indicate?

A.q = Q * s; an increase indicates pump motor failure.

B.q = k_f / M; a decline indicates that the well casing diameter has expanded due to corrosion.

C.q = s / Q; a decline indicates that the regional groundwater table has risen above the ground surface.

D.q = Q / s (discharge per unit drawdown, e.g. m³/(h*m) or l/(s*m)); a decline indicates well aging, screen incrustation (Verockerung), or gravel pack clogging (Kolmation).

Explanation: Specific capacity (Spezifische Ergiebigkeit) is defined as q = Q / s (pumping rate Q divided by the resulting steady-state drawdown s). A decreasing specific capacity over time means more drawdown is required to extract the same discharge, signaling increased well entry resistance due to chemical incrustation (iron/manganese ochre / Verockerung), biological biofouling, or fine sand/silt clogging (Kolmation) of the filter gravel pack.

9In a step-drawdown pumping test (Stufenpumpversuch) evaluated using the Jacob method (s_w = B*Q + C*Q²), what physical phenomena do the linear coefficient (B) and non-linear coefficient (C) represent?

A.B represents laminar flow head losses within the aquifer formation (aquifer loss), while C represents non-linear turbulent head losses through the gravel pack, screen slots, and pump column (well loss).

B.B represents regional barometric pressure changes, while C represents thermal convection in the pump motor jacket.

C.B represents the well screen slot width in millimeters, while C represents the gravel pack grain diameter d_50 in centimeters.

D.B represents unconfined storage coefficient, while C represents the salinity of the pumped water.

Explanation: In Jacob's well loss equation s_w = B*Q + C*Q², the first term B*Q represents laminar head loss in the aquifer formation according to Darcy's law. The second term C*Q² represents turbulent head loss occurring as water accelerates through the perturbed filter gravel pack, enters the narrow screen slots, and flows up inside the well casing (termed well entrance loss / Brunnenverlust). Well efficiency is calculated as eta_w = (B*Q) / (B*Q + C*Q²).

10When estimating hydraulic conductivity (k_f) from a grain size distribution curve (Sieblinie) of uniform sand using Hazen's empirical formula (k_f = 0.0116 * d_10² [m/s] where d_10 is in mm), what is the estimated k_f for an aquifer sand with effective grain size d_10 = 0.30 mm?

A.k_f = 3.48 * 10^-3 m/s

B.k_f = 1.04 * 10^-3 m/s

C.k_f = 1.04 * 10^-4 m/s

D.k_f = 3.48 * 10^-5 m/s

Explanation: Using Hazen's formula k_f = 0.0116 * d_10² (in m/s for d_10 in mm): k_f = 0.0116 * (0.30)² = 0.0116 * 0.09 = 0.001044 m/s = 1.044 * 10^-3 m/s (approx. 1.04 * 10^-3 m/s). Hazen's formula is valid for uniform sands with uniformity coefficient U = d_60/d_10 < 5.

About the Befähigungsprüfung Brunnenmeister Exam

The Befähigungsprüfung Brunnenmeister is the premier Austrian statutory trade qualification for master well builders and groundwater engineering contractors. Classified as a regulated trade (reglementiertes Gewerbe) under § 94 Z 5 of the Austrian Trade Code (Gewerbeordnung 1994), holding this master certificate confers the legal entitlement to operate an independent well construction company, execute deep borehole drilling, shaft and collector wells, geothermal probes, pit dewatering, water treatment systems, and to assume full civil and public liability for groundwater interventions before water authorities. Positioned at National Qualifications Framework (NQR) Level 7, this master qualification requires rigorous technical command of hydrogeological mathematics, Dupuit-Thiem drawdown modeling, rotary/percussion drilling dynamics, gravel pack design per DIN 4924 and ÖNORM B 2601, well rehabilitation chemistry, submersible pumping hydraulics, and the Austrian Water Act (Wasserrechtsgesetz 1959). This practice bank offers a 100-question English-language study adaptation preserving exact German statutory, geological, and technical terminology.

Assessment

Modular statutory examination under § 94 Z 5 of the Austrian Trade Code (GewO 1994) and the Brunnenmeister-Befähigungsprüfungsordnung, positioned at NQR Level 7 (Master's equivalence). The examination is structured into: Modul 1 (Projektorientierte fachlich-praktische Prüfung): comprehensive project planning, execution concept, and practical competence; Modul 2 (Fachlich-mündliche Prüfung): commission examination covering hydrogeology, drilling technologies, water treatment, water law, and safety; Modul 3 (Fachlich-schriftliche Prüfung): multi-hour written examination covering technical calculations, statics, aquifer hydraulics, well dimensioning, and cost estimation; Modul 4 (Ausbilderprüfung): apprentice trainer competence; Modul 5 (Unternehmerprüfung): legal and business management.

Time Limit

Written engineering paper (Modul 3): 6–8 hours; oral commission examination (Modul 2): approx. 30–45 minutes per subject; practical project defense (Modul 1): project-specific multi-hour schedule; total sitting schedule arranged modularly across several days.

Passing Score

Graded on the statutory Austrian school scale (1 = Sehr gut, 2 = Gut, 3 = Befriedigend, 4 = Genügend, 5 = Nicht genügend). All examined subjects and modules must achieve at least grade 4 ('Genügend') to pass.

Exam Fee

Free of charge for the 1st and 2nd attempt across all module examinations and the Unternehmerprüfung (100% federally funded since 1 January 2024, applied retroactively to 1 July 2023); from the 3rd attempt onward, standard examination fee tariffs per the Allgemeine Prüfungsordnung (BGBl. II Nr. 110/2004) apply. (WKO Meisterprüfungsstellen / Bundesinnung Bau (Wirtschaftskammer Österreich))

Befähigungsprüfung Brunnenmeister Exam Content Outline

25% of this practice bank

Hydrogeology, Hydraulics & Water Quality (Hydrogeologie, Hydraulik & Wasserchemie)

Aquifer types (unconfined, confined, artesian), Darcy's law, Dupuit-Thiem steady-state drawdown formulas, Sichardt radius of influence, step-drawdown and pumping test evaluations (Theis, Cooper-Jacob), water chemistry parameters per Trinkwasserverordnung (TWV), calco-carbonic equilibrium, and standard water sampling protocols (ÖNORM EN ISO 5667).

30% of this practice bank

Well Construction, Drilling & Rehabilitation (Brunnenbau, Bohrtechnik & Regenerierung)

Design of drilled wells (Bohrbrunnen), dug caisson wells (Schachtbrunnen), and radial collector wells (Horizontalfilterbrunnen); drilling methods (direct mud rotary, reverse suction, airlift, DTH hammer); casing and screen selection (bridge slot, continuous wire-wrapped); gravel pack sizing (DIN 4924, Terzaghi criteria); entrance velocity limits (v_e <= 0.03 m/s); annular sanitary seals; well development (airlift, piston surging, Hydropuls); and chemical/mechanical rehabilitation.

25% of this practice bank

Pumps, Piping, Water Treatment & Geothermal Systems (Pumpen, Leitungsbau & Geothermie)

Submersible borehole pumps (UWP), pump curves (Q-H, NPSH, cavitation prevention), hydraulic power calculations, water hammer dynamics (Joukowsky), PE piping networks, groundwater treatment (de-ironing, demanganization, catalytic sand filtration, UV-C disinfection), geothermal borehole heat exchangers (EWS per ÖWAV-Regelblatt 207, thermally enhanced grouting), and pit dewatering systems (Wasserhaltung, vacuum wellpoints).

20% of this practice bank

Austrian Water Law, Safety & Site Management (WRG 1959, Arbeitssicherheit & BauV)

Austrian Water Act (Wasserrechtsgesetz 1959 - WRG 1959 §§ 9, 10, 31, 32, 34), water protection zones (Zone I, II 60-day travel time, Zone III), GewO 1994 § 94 Z 5 regulated trade rules, Bauarbeiterschutzverordnung (BauV) safety protocols in shafts/pits (CO2, H2S, O2 atmospheric testing, fall arrest, trench shoring per ÖNORM B 4410), contract management under ÖNORM B 2110, cost estimation, and ÖNORM B 2601 documentation.

How to Pass the Befähigungsprüfung Brunnenmeister Exam

What You Need to Know

Passing score: Graded on the statutory Austrian school scale (1 = Sehr gut, 2 = Gut, 3 = Befriedigend, 4 = Genügend, 5 = Nicht genügend). All examined subjects and modules must achieve at least grade 4 ('Genügend') to pass.
Assessment: Modular statutory examination under § 94 Z 5 of the Austrian Trade Code (GewO 1994) and the Brunnenmeister-Befähigungsprüfungsordnung, positioned at NQR Level 7 (Master's equivalence). The examination is structured into: Modul 1 (Projektorientierte fachlich-praktische Prüfung): comprehensive project planning, execution concept, and practical competence; Modul 2 (Fachlich-mündliche Prüfung): commission examination covering hydrogeology, drilling technologies, water treatment, water law, and safety; Modul 3 (Fachlich-schriftliche Prüfung): multi-hour written examination covering technical calculations, statics, aquifer hydraulics, well dimensioning, and cost estimation; Modul 4 (Ausbilderprüfung): apprentice trainer competence; Modul 5 (Unternehmerprüfung): legal and business management.
Time limit: Written engineering paper (Modul 3): 6–8 hours; oral commission examination (Modul 2): approx. 30–45 minutes per subject; practical project defense (Modul 1): project-specific multi-hour schedule; total sitting schedule arranged modularly across several days.
Exam fee: Free of charge for the 1st and 2nd attempt across all module examinations and the Unternehmerprüfung (100% federally funded since 1 January 2024, applied retroactively to 1 July 2023); from the 3rd attempt onward, standard examination fee tariffs per the Allgemeine Prüfungsordnung (BGBl. II Nr. 110/2004) apply.

Keys to Passing

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Befähigungsprüfung Brunnenmeister Study Tips from Top Performers

1Master groundwater hydraulic calculations: memorize Darcy's law (Q = k_f * I * A), the Dupuit-Thiem equations for unconfined (Q = pi * k_f * (H^2 - h_w^2) / ln(R/r_w)) and confined aquifers (Q = 2 * pi * k_f * M * (H - h_w) / ln(R/r_w)), and Sichardt's formula for the radius of influence (R = 3000 * s * sqrt(k_f)).

2Understand gravel pack and screen dimensioning: calculate filter gravel sizing using grain size distribution curves (d_50, U = d_60/d_10) according to DIN 4924 and Terzaghi filter criteria (D_15 / d_85 < 4 to 5), and check maximum permissible well entrance velocity (v_e <= sqrt(k_f) / 30 <= 0.03 m/s per ÖNORM B 2601).

3Know Austrian water protection zone regulations under WRG 1959 § 34: calculate the 60-day travel boundary for Zone II using distance velocity v_a = (k_f * I) / n_e, where n_e is the effective porosity, multiplied by 60 days (5,184,000 seconds).

4Review pump hydraulics and system curves: calculate hydraulic power P_hyd = (rho * g * Q * H) / 3600, account for motor/pump efficiencies (eta), verify cavitation safety with NPSH_avail > NPSH_req + 0.5 m, and size submersible pump cooling jackets when flow velocity along the motor is below 0.08–0.15 m/s.

5Memorize statutory occupational safety rules under BauV: always test well shafts and deep pits for hazardous atmospheres (CO2 accumulation, H2S, O2 deficiency < 19 vol%) before entry, mandate forced ventilation, use rescue tripods with harnesses, and enforce shoring for excavations deeper than 1.25 m in loose ground per ÖNORM B 4410 / DIN 4124.

6Familiarize yourself with geothermal probe installation per ÖWAV-Regelblatt 207: double-U tube PE pipes, bottom-up tremie grouting with thermally enhanced bentonite-cement suspension (lambda >= 1.6–2.0 W/(m*K)), and complete annular sealing between separate aquifer storeys.

Frequently Asked Questions

What is the Befähigungsprüfung Brunnenmeister in Austria?

The Befähigungsprüfung Brunnenmeister is the statutory master trade competence examination in Austria for the well construction and groundwater engineering trade, listed as a regulated trade (reglementiertes Gewerbe) in § 94 Z 5 of the Austrian Trade Code (Gewerbeordnung 1994). Administered by the Meisterprüfungsstellen of the Austrian Economic Chambers (WKO) under the Prüfungsordnung of the Bundesinnung Bau, it qualifies holders at National Qualifications Framework (NQR) Level 7 to independently operate a well construction enterprise, design and build public and private groundwater extraction facilities, install geothermal probe fields, execute building pit dewatering, and represent projects before Austrian water authorities.

What is the structure of the Brunnenmeister Befähigungsprüfung?

The examination consists of 5 modular components: Modul 1 is the project-oriented practical examination (Projektorientierte fachlich-praktische Prüfung), where candidates prepare and defend a comprehensive well construction project; Modul 2 is the oral commission examination (Fachlich-mündliche Prüfung) covering hydrogeology, drilling technologies, water treatment, water law, and safety; Modul 3 is the written engineering examination (Fachlich-schriftliche Prüfung) covering hydrogeological calculations, static verifications, pump hydraulics, and cost estimation; Modul 4 is the instructor examination (Ausbilderprüfung); and Modul 5 is the business and legal management examination (Unternehmerprüfung).

What qualification level does the Brunnenmeister hold on the NQR / EQF?

The Austrian Brunnenmeister qualification is officially positioned at Level 7 of the National Qualifications Framework (NQR) and European Qualifications Framework (EQF). This places the master certificate on the exact same educational and competence level as a university Master's degree (M.Sc. / Dipl.-Ing.), reflecting the advanced engineering, mathematical, legal, and hydrogeological responsibilities required in well construction and groundwater protection.

How are water protection zones structured under Austrian Water Law (WRG 1959)?

Under § 34 of the Austrian Water Act (Wasserrechtsgesetz 1959 - WRG 1959), drinking water protection zones (Wasserschutzgebiete) are established in three concentric tiers: Zone I (Fassungsbereich) covers the immediate well area (minimum 10 m radius) with strict fencing and prohibition of all non-water supply activities; Zone II (Engere Schutzzone) encompasses the area within a 60-day groundwater travel time to the extraction point to protect against bacterial/pathogenic contamination; Zone III (Weitere Schutzzone) spans the broader catchment area to protect against long-lasting chemical, radioactive, and petroleum pollutants.

How much does the Austrian Brunnenmeister Befähigungsprüfung cost?

Since 1 January 2024 (enacted retroactively to 1 July 2023), examination fees for the 1st and 2nd attempts across all module examinations of Meister- and Befähigungsprüfungen as well as the Unternehmerprüfung are 100% funded by the Austrian federal government and are completely free of charge for candidates. From the 3rd attempt onward, fees are charged according to the statutory tariff of the Allgemeine Prüfungsordnung (BGBl. II Nr. 110/2004) levied by the relevant provincial WKO Meisterprüfungsstelle.

How does this practice bank adapt the Austrian Brunnenmeister examination?

The statutory Austrian Befähigungsprüfung is conducted in German before a WKO examination board, featuring comprehensive engineering design projects, written calculations, and oral commission defenses. This practice question bank is an English-language multiple-choice adaptation specifically engineered to help candidates master hydrogeological formulas (Darcy, Dupuit-Thiem, Sichardt), well casing and gravel pack sizing (DIN 4924 / ÖNORM B 2601), pump hydraulics, geothermal grouting standards (ÖWAV-Regelblatt 207), shaft safety (BauV), and Austrian statutory requirements under the WRG 1959 and GewO 1994, while preserving authentic German technical and legal terminology.