Construction of water projects
What this code covers
Use this class for construction of water projects when the main activity includes Construction and reconstruction of and Waterways, harbour basins, rivers, marinas. Check exclusions and nearby codes before applying it to a mixed activity.
Official NACE Rev. 2.1 labels and explanatory notes are imported from the source dataset. Plain-language explanations are shown separately so readers can compare interpretation with the source text.
No child codes; this is a class-level code.
- construction and reconstruction of, e.g.:
- waterways, harbour basins, rivers, marinas
- hydromechanical structures (e.g. locks, lifts, sluices, slipways)
- dams and dykes
- construction of underwater pipelines, see 42.21
- laying of underwater cables, see 42.22
- project management activities related to civil engineering works, see 71.12
- Compare with 42.21, 42.22, 71.12 when the main activity overlaps another code.
- Check national equivalent caveats before using this code for local registration or filing workflows.
- If the main revenue activity appears in an exclusion, compare the alternative code before deciding.
Use this guide as classification support, not legal, tax, filing, or regulatory advice.
- - construction and reconstruction of, e.g.:
- - waterways, harbour basins, rivers, marinas
- - hydromechanical structures (e.g. locks, lifts, sluices, slipways)
- - dams and dykes
- - dredging of waterways (e.g. harbour basins, rivers)
- - construction of underwater pipelines, see 42.21
- - laying of underwater cables, see 42.22
- - project management activities related to civil engineering works, see 71.12
- - Construction and reconstruction of
- - Waterways, harbour basins, rivers, marinas
- - Hydromechanical structures (e.g. locks, lifts, sluices, slipways)
- - Dams and dykes
- - Construction of underwater pipelines
- - Laying of underwater cables
- - Project management activities related to civil engineering works
What is NACE 42.91 used for?
Use NACE 42.91 for construction of water projects when the main activity matches this scope: Use this class for construction of water projects when the main activity includes Construction and reconstruction of and Waterways, harbour basins, rivers, marinas. Check exclusions and nearby codes before applying it to a mixed activity.
What are typical examples for 42.91?
Typical examples include Construction and reconstruction of, Waterways, harbour basins, rivers, marinas, and Hydromechanical structures (e.g. locks, lifts, sluices, slipways).
When might 42.91 not be the right code?
Review another code when the activity is closer to construction of underwater pipelines, see 42.21 and laying of underwater cables, see 42.22.
Which codes should I compare before choosing 42.91?
Compare 42.91 with 42.21 Construction of utility projects for fluids, 42.22 Construction of utility projects for electricity and telecommunications, and 71.12 Engineering activities and related technical consultancy when the activity description is ambiguous.
Use this class for construction of utility projects for fluids when the main activity includes Construction of civil engineering structures for: and Long-distance, underwater and urban pipelines. Check exclusions and nearby codes before applying it to a mixed activity.
Use this class for construction of utility projects for electricity and telecommunications when the main activity includes Construction of civil engineering structures for: and Long-distance and urban communication and power lines. Check exclusions and nearby codes before applying it to a mixed activity.
Use this class for engineering activities and related technical consultancy when the main activity includes Engineering design (i.e. applying physical laws and principles of engineering in the design of machines, materials, instruments, structures, processes and systems) and consulting activities for: and Machinery, industrial processes and industrial plant. Check exclusions and nearby codes before applying it to a mixed activity.
Use this class for construction of other civil engineering projects n.e.c. when the main activity includes Construction of industrial facilities, except buildings and Mining facilities (e.g. shafts, towers, tunnels). Check exclusions and nearby codes before applying it to a mixed activity.
Use this group for the broader activity area of construction of other civil engineering projects, including Construction of water projects and Construction of other civil engineering projects n.e.c.. Open the child codes when a more specific code is needed.
Rev. 2 code 42.91 maps to the same Rev. 2.1 class 42.91 Construction of water projects.
Official close match imported from NACE Rev. 2.1.
Low operational impact is expected, but systems should still store the target Rev. 2.1 version explicitly.
Confirm the target version field and update references where Rev. 2.1 is required.