Water and sewerage networks, from the first cut to handover.
We design and build water supply mains, sewer collectors, service connections and laterals — with our own engineers, machinery and crews, in towns and villages alike.
Kilometres laid in the ground
Combined lengths from completed and handed-over works. The figures are updated as new sections are delivered.
Sewer pipe
foul and storm collectors
Drinking water pipe
distribution networks and trunk mains
Cumulative lengths from works carried out both as main contractor and as subcontractor. See the project list →
Design, construction and consultancy
We can pick the work up at any stage: from the design brief, from an already approved project, or from the tender file.
Design
Feasibility studies, permit documentation, technical design and construction details for water and sewerage networks, with specialist designers and certified project checkers.
- Feasibility studies and rehabilitation assessments
- Technical design, specifications, bills of quantities
- Obtaining approvals and the building permit
- Technical assistance throughout construction
Construction
Water and sewerage networks built with our own machinery and crews — no middlemen, direct control over deadlines.
- Distribution networks, trunk mains, collectors
- Service connections, laterals, manholes, hydrants
- Pumping stations and directional drilling
- Reinstatement of roadways and pavements
Consultancy
Technical support for public tenders and for works under construction — from the bid file to the final payment certificate.
- Public tender documentation
- Technical proposals and construction programmes
- Cost estimates, quantity take-offs, price analyses
- Support during construction and payment certification
Water and sewerage works, end to end
From a single household connection to the network of an entire village.
Sewerage networks
Foul and storm collectors, inspection manholes, gullies, laterals to the collector.
Water supply networks
Distribution and trunk mains, hydrants, isolation valves, valve chambers.
Service connections and laterals
From the street main to the property boundary, including the meter chamber and full reinstatement.
Pumping stations
Wastewater pumping stations and water booster sets: installation, services, testing.
Road and pavement reinstatement
Backfill compacted in layers, road sub-base and asphalt over the areas affected by excavation.
Repairs and maintenance
Burst repairs, section replacement, pressure and tightness testing.
One project, four clear stages
Review and quotation
We study the design and the quantities, visit the site and send our quotation.
Site set-up
Setting out, traffic signage, excavation permits and site handover.
Construction
Excavation, pipe laying, manhole installation, testing and compacted backfill.
Handover and warranty
As-built dossier, handover on completion, warranty period.
We install water and sewer connections
- Excavation, laying and connection to the street main
- Meter chamber and connection chamber included
- Reinstatement of the affected pavement or roadway
- All paperwork needed for the connection to be signed off
Planning a new network or an extension?
Send us the documentation or describe the work — we will come back with a clear quotation.
Design, construction and consultancy for water and sewerage networks
We cover the whole chain of a water and sewerage investment: the technical documentation, the construction itself with our own machinery and crews, and support on tenders and payment certificates.
Technical documentation, from brief to permit
We produce documentation for water supply, foul and storm sewerage networks, at every stage, with specialist designers and certified project checkers.
Feasibility studies · Rehabilitation assessments · Concept notes
Feasibility studies for new schemes and rehabilitation assessments for existing networks, with technical options, key indicators and the overall cost estimate.
Permit documentation · Technical design · Construction details
Building permit documentation, the technical design, construction details, specifications and bills of quantities.
Approvals and technical checking
Obtaining the planning certificate and the required approvals, independent checking of the design against quality requirements, and filing for the building permit.
Water networks
Trunk mains, distribution networks, waterworks compounds, reservoirs, pumping and chlorination stations, hydrants, service connections.
Foul and storm sewerage
Gravity collectors, rising mains, automated wastewater pumping stations, manholes, gullies.
Designer's site supervision
Monitoring the works, site instructions, variation and omission orders, attendance at hold points and at handover.
Network construction with our own machinery and crews
We do not subcontract the core of the work. Excavation, pipe laying, manholes, testing and reinstatement are done by our own people and machines — which is why we can hold to the programme.
Excavation and pipe laying
Our own excavators and mini-excavators, trench shoring for deep excavations, sand bedding and backfill compacted in layers.
Service connections and laterals
From the street main to the property boundary, with meter chamber, connection chamber and reinstatement of the affected area.
Pumping stations
Prefabricated wastewater pumping stations and water booster sets: installation, electrical works, controls, commissioning and testing.
Crossings and directional drilling
Crossings under national and county roads and railways by horizontal directional drilling, with a protective duct.
Road and pavement reinstatement
Road sub-base, asphalt surfacing, paving and kerbs over the areas affected by excavation.
Testing, handover and maintenance
Pressure and tightness tests, compaction testing, as-built dossier, handover on completion, warranty call-outs.
Public tenders, cost estimates and site support
We have put together bid files and followed payment certificates on our own projects for years. We make that same experience available to companies bidding for utility infrastructure contracts.
Public tender documentation
Preparing the bid file in line with the tender data sheet: the European Single Procurement Document, forms, qualification documents, third-party support undertakings and subcontractor declarations.
The technical proposal
Construction methodology, works programme and Gantt chart, allocated resources, quality management plan, health and safety and environmental plans.
Cost estimates and quantity take-offs
Extracting quantities from the design, checking the standard bill-of-quantity forms, price analyses, tender estimates and justification notes.
Reviewing the technical design
Checking that the documentation is complete before bidding: discrepancies between drawings and written parts, missing quantities, clarification requests to the contracting authority.
Support during construction
Site organisation, the quality control programme, hold points, site instructions and the relationship with the client's site supervisor.
Payment applications and certification
Preparing payment applications, measurement sheets, variation and omission orders, price adjustments.
From the design brief to the final handover
The full route of a water and sewerage project: which documents are needed at each step and in what order. Hover over (or tap) a step to see the explanation and the paperwork.
Design brief
Do you already have documentation?
Attach whatever drawings and documents you have — DWG plans, topographic survey, land registry extract, technical design, tender documentation. We will look through them and come back with a quotation for design, construction, consultancy, or all three.
Projects built and designed
The list of projects, with the lengths actually installed on each. The figures come from contracts, technical reports, bills of quantities and payment applications.
Our sites
Photographs from projects under construction and from completed ones. Click an image to enlarge.
Construction
17 projects · as main contractor and as subcontractorWater supply network extension — Ercea
Băla commune, Mureș county · Băla Commune · 2024–2025 · design and construction
- 6.495m of water main
- 90service connections
- 1reservoir, 100 m³
- pumping and chlorination station
Water and sewerage extension, Lungă Street — Cisnădie
Cisnădie town, Sibiu county · Cisnădie Town Hall · 2026 · under construction
- 1.120m of water main
- 981m of foul sewer
- 1.074m of storm sewer
- 59service connections
- 118sewer laterals
Water and foul sewer extension — Cristuru Secuiesc
Cristuru Secuiesc town, Harghita county · Cristuru Secuiesc Town · 2025–2026 · under construction
- 2.716m of water main
- 410m of foul sewer
- 171service connections
- 37sewer laterals
- 18hydrants
Water network extension — CL15 Făgăraș, Voivodeni
Voivodeni commune, Brașov county · GoPro Infrastructure (main contractor) · 2024 · as subcontractor
- 3.862m of water main
- 218service connections
- 8hydrants
Water network and service connections — Surduc
Cristolțel · Surduc · Tihău, Sălaj county · Someș Water Company · 2024 · handed over
- 2.117m of water main
- 36service connections
- 74m of directional drilling
Ercea water network extension — phase 2
Băla commune, Mureș county · Băla Commune · 2025 · design and construction
- 1.667m of water main
- 15service connections
Utilities for the nursery on Bistriței Street — Zalău
Zalău municipality, Sălaj county · City of Zalău (national recovery plan) · 2025 · handed over
- 131m of water main
- 207m of foul sewer
- 378m of storm sewer
- 20manholes
Storm sewerage — Central Square refurbishment, Saschiz
Saschiz commune, Mureș county · Viaduct SRL (main contractor) · 2026 · under construction
- 974m of storm sewer
- 32manholes
- 28gullies
- 49m of water and sewer connection
Foul sewer extension — Cojocna
Cojocna commune, Cluj county · Cojocna Commune · 2023–2024 · handed over
- 514m of foul sewer
- 28sewer laterals
- 31inspection manholes
Foul sewer network — Crainimat and Șieu-Măgheruș
Șieu-Măgheruș commune, Bistrița-Năsăud county · Record SRL (main contractor) · 2025 · as subcontractor
- 460m of foul sewer
- 17connection chambers
- 7line manholes
Sewer rehabilitation — Meșterilor and Lăutarilor Streets, Cojocna
Cojocna commune, Cluj county · Cojocna Commune · 2023 · handed over
- sewer rehabilitation and resizing
- storm water collection
Excavation and water main installation — lot 3 Acățari
Acățari commune, Mureș county · Oltspera (main contractor) · 2023 · as subcontractor
- 531m of water main
- 63 mm and 140 mm diameter
Water service connections — Măgherani
Măgherani commune, Mureș county · Parmado Consimpex SRL · 2023 · as subcontractor
- 260service connections installed
Water connection for the 110/20 kV substation — Luduș
Luduș town, Mureș county · Distribuție Energie Electrică România · 2024 · handed over
- 300m of service connection
- 2inspection chambers
Utilities for Weekend Park — Târgu Mureș
Târgu Mureș municipality, Mureș county · City of Târgu Mureș · 2023–2024 · design and construction
- 85m of foul sewer
- 17m of storm sewer
- 9m of water connection
- 5manholes
Storm sewer, drainage and septic tank — Băla
Băla commune, Mureș county · Băla Commune · 2025 · handed over
- 50m of storm sewer
- 25m of land drainage
- 10m of foul sewer
Water main extension and service connections — Ernei
Ernei commune, Mureș county · private client · 2024 · handed over
- 75m of water main
- 2service connections
Design
12 design packages · feasibility, permit and technical designDrinking water network extensions — Ungheni, Vidrașău, Cerghid, Morești
Ungheni town, Mureș county · Ungheni Town · 2022–2023 · feasibility · permit · technical design
- 4.673m of water main
- 140service connections
- 33hydrants
- 30valve chambers
Foul sewer extensions — Ungheni, Vidrașău, Cerghid
Ungheni town, Mureș county · Ungheni Town · 2022–2023 · feasibility · permit · technical design
- 3.735m of gravity sewer
- 1.432m of rising main
- 85inspection manholes
- 168sewer laterals
- 6pumping stations
Water supply — Fânațe and Pogăceaua, Band commune
Band commune, Mureș county · Band Commune · 2023 · permit · technical design
- 3.239m of water main
- 12valve chambers
- 9hydrants
- 1reservoir, 15 m³
Ulieș catchment water supply
Râciu commune, Mureș county · Râciu Commune · 2022–2023 · technical design
- 3.690m of trunk main
- 6valve chambers
- 1pumping station
- 1balancing tank
Water and sewerage networks, Câmpul de Jos and Câmpul de Sus Streets — Mediaș
Mediaș municipality, Sibiu county · City of Mediaș · 2023 · technical design
- 1.102m of water main
- 1.080m of foul sewer
- 990m of storm sewer
- 12hydrants
- 36connections and laterals
Water network extension — Părți Street, Sărmașu
Sărmașu town, Mureș county · Sărmașu Town · 2023 · permit and technical design
- 509m of water main
- 2valve chambers
- 3hydrants
Water and sewerage extension — Strada Verde, Târgu Mureș
Târgu Mureș municipality, Mureș county · City of Târgu Mureș — Parks Department · 2026 · permit · technical design
- 245m of water main
- 245m of foul sewer
- 170m of rising main
- 1pumping station
- 20connections and laterals
Foul sewer extension — Cosminului Street, Ungheni
Ungheni town, Mureș county · Ungheni Town · 2024 · feasibility study
- 343m of gravity sewer
- 184m of rising main
- 1pumping station
- 8sewer laterals
Water network extension — Cosminului Street, Ungheni
Ungheni town, Mureș county · Ungheni Town · 2024 · feasibility study
- 387m of water main
- 8service connections
- 5hydrants
Water distribution extension — Crucii Street, Sântana de Mureș
Sântana de Mureș commune, Mureș county · private client · 2024 · permit · technical design
- 216m of water main
- 2hydrants
- 1valve chamber
Calea Sighișoarei road widening — water and sewerage discipline
Târgu Mureș municipality, Mureș county · City of Târgu Mureș (via Starcom Exim) · 2025 · feasibility · design subcontract
- relocation of water and sewer mains
- storm sewer along the section
Water and sewerage for a housing development — Florilor Street, Cristești
Cristești commune, Mureș county · private client · 2023 · building permit
- 9plots served
- water main and foul sewer
Note: the lengths above are taken from each project's documentation (technical reports, bills of quantities, payment applications). Projects marked “under construction” are still running, and the final quantities may change through variation or omission orders.
The people and machines behind the work
Engineers, specialist designers, site managers and construction crews with deep experience in water and sewerage networks.
A team of specialists, not just a plant hire company
Norinvest Construct is a team of specialists in water and sewerage infrastructure, made up of several engineers — in building services, civil and hydraulic engineering — covering both the design work and the running of the sites themselves.
The construction is carried out by highly capable crews with extensive experience in utility networks: people who have laid tens of kilometres of pipe, in towns and villages, on difficult ground and with crossings under national roads and railways.
We work alongside specialist designers și cu certified project checkers, and for complex projects we draw on a wide network of partners: surveyors, geotechnical engineers, electrical and control engineers, directional drilling and road works companies. That is how we can take a project from brief to final handover without depending on anyone for the essential steps.
Who takes the project from brief to handover
The same people follow the project from the design to the final payment application — nothing is lost in the handover between stages.
Project managers
They run the project on the company side: the contract, the programme, procurement, and the relationship with the client and the site supervisor.
Site managers
They run the working site itself: crews, plant, setting out, hold points, safety and day-to-day quality of the works.
Design engineers
They produce the feasibility, permit and technical design packages for water and sewerage networks, and provide the designer’s site supervision.
Quantity surveyor
Quantity take-offs, price analyses, tender estimates, payment applications and final accounts.
Civil engineer
Structures related to the networks: manholes, valve chambers, base slabs, reservoir foundations, road reinstatement.
Surveyors
Topographic surveys, setting out the routes on the ground, checking levels and gradients, as-built drawings after construction.
Our own equipment — no waiting on hire companies
Equipment supplemented by partners: for work requiring specialised plant — horizontal directional drilling, heavy tipper trucks, asphalt equipment — we work with trusted partners we have shared sites with before.
Let's talk about your project
Phone, e-mail or the form below — we reply as soon as we can.