EPC Contractors for Water Supply, Sanitation, STP & Plumbing Across India
Serving Chandigarh Tricity, Delhi NCR, Mumbai, Bengaluru, Pune & 20+ Cities Nationwide
AD Contracts is a national EPC partner delivering integrated plumbing, water supply, sanitation, drainage and STP/ETP solutions for residential, commercial, industrial and government projects across India. With 100+ completed projects across 12+ states, we bring engineering-led execution backed by CPHEEO/CPCB-compliant design standards and a fully in-house workforce (zero subletting). From turnkey plumbing and fire-fighting systems to wastewater treatment and public health engineering, we ensure reliable, efficient and long-life infrastructure for projects of any scale.
Related Water, Sanitation, STP & EPC Services
Browse our engineering capabilities, project execution services and corporate information — all designed for national EPC plumbing, STP and public health engineering projects.
Turnkey STP & Wastewater Treatment EPC
We design, supply, install and commission sewage & wastewater treatment plants (STP/ETP) with technologies such as SBR, MBBR and MBR, ensuring regulatory compliance and reliable performance for municipal, commercial and industrial projects.
End-to-End Sewage Treatment Solutions
Our team delivers turnkey sewage treatment services from feasibility and detailed design to commissioning and O&M, focusing on lifecycle cost optimisation and low operational footprint.
STP & Sanitation Contractors (Pan-India)
We execute rapid mobilisation and compliant delivery as STP and sanitation contractors across India, providing on-site supervision, testing and performance guarantees for each project.
Public Health Engineering & Water Distribution
We undertake public health engineering (PHE) works including water supply networks, sewerage systems and stormwater drainage, designed to CPHEEO and IS standards for long-term serviceability.
Plumbing, Fire-Fighting & Sanitation Systems
Comprehensive plumbing and fire-fighting contracting — from internal plumbing to firefighting risers and hydrant systems — using corrosion-resistant materials and water-saving technologies with smart monitoring options.
Trusted EPC Plumbing & Sanitation Contractors
Recognised by developers and institutions for reliable delivery, our in-house teams, strict QA/QC and transparent project controls ensure predictable schedules and high-quality outcomes for projects nationwide.
Industrial Sanitary Plumbing & Hygienic Systems
We provide industrial sanitary plumbing solutions for manufacturing, food processing, healthcare and pharma facilities — focusing on hygienic materials, regulatory compliance and maintenance-friendly design.
Fire-Fighting System Contracting
Complete fire-fighting system contracting including pump rooms, hydrant networks, sprinkler systems, fire-fighting risers and automatic suppression solutions, designed and installed to meet NBC and client-specific safety standards.
STP & Plumbing Operation & Maintenance (O&M)
Comprehensive O&M services for STP/ETP and plumbing systems — trained operators, preventive maintenance, spare parts supply and performance monitoring to ensure consistent compliance and prolonged asset life.
Planning a plumbing, STP or sanitation project?
Get engineering-led execution with 100+ completed projects across India.
FAQs
Do you deliver projects outside Chandigarh?
Yes. While our head office is in Zirakpur-Chandigarh, we execute turnkey EPC contracts across India with multiple offices and rapid mobilisation teams.
What STP/ETP technologies do you provide?
We implement proven solutions including SBR, MBBR, MBR and customised hybrid systems depending on influent load, land availability and client requirements.
Are your systems CPHEEO / CPCB compliant?
All designs and installations follow CPHEEO, CPCB and applicable IS codes. We provide documentation and approvals support during the permitting process.
Do you offer operation & maintenance (O&M)?
Yes — we provide full O&M contracts with trained staff, monitoring, spare parts support and performance optimisation plans to ensure long-term reliability.
Can you handle industrial & large-scale municipal contracts?
Yes. Our EPC capabilities, in-house manpower and project controls allow us to manage industrial facilities, large residential townships and municipal projects end-to-end.
How long does an STP installation typically take?
Timelines vary by scale and scope; a small to medium STP often completes in 8–16 weeks, while larger projects are scheduled after detailed design and site mobilisation planning.
What warranties and guarantees do you provide?
We provide workmanship warranties, performance guarantees and clear O&M SLAs as part of our project contracts to ensure accountability and predictable operation.
How do you ensure quality on site?
We follow strict QA/QC protocols, third-party testing where required, and maintain detailed checklists during installation and commissioning to meet client and regulatory standards.
We have a professional team of construction workers and auditors for your company
Harnessing Technical Expertise to Design Solutions
Introduce a future-focused design partner—AD combines deep technical know-how with creative vision to deliver solutions that solve today’s challenges and anticipate tomorrow’s needs
Ensuring Seamless Water Flow & Sanitation
AD’s plumbing arm delivers turnkey installations and proactive maintenance that keep your water systems pristine and reliableindustrial plants where uninterrupted water flow and sanitation are mission-critica
Transforming Blueprints into Reality
When detailed plans meet flawless execution, AD’s construction and craftsmanship team shines. From roadways and footpaths to bespoke structural elements, we turn architectural blueprints into sturdy and on time.
Safeguarding Properties & Lives
AD’s fire prevention and mitigation solutions are engineered to detect, contain, and extinguish fire threats before they become disasters. We design, install, and service end-to-end fire safety systems that meet stringent regulations.
Civil structure and finishing work
Our team specializes in delivering robust civil structures and seamless finishing works tailored for residential, commercial, and industrial projects.
Let’s connect today and build your vision with a construction .
To set the gold standard in plumbing and fire protection solutions, ensuring safety, sustainability, and innovation, while fostering enduring partnerships with clients and communities
OUR ESTEEMED CLIENTS
AD Contracts is proud to collaborate with some of the most respected names across industries—from real estate developers and infrastructure firms to healthcare and commercial establishments. Our commitment to precision and professionalism has earned us repeat partnerships and long-term trust.
SUSHMA BUILDTECH LTD
PRIME TECHNOENGINEERS PVT. LTD
ITC MULLANPUR NEW CHANDIGARH INTERNAL & EXTERNAL PLUMBING WORK (Project Value Rs. 69.8 lakhs) Excluding GST
INFRA 13 PVT. LTD
WAVE ESTATE, SEC 85 & 99 MOHALI INTERNAL PLUMBING WORK (Project Value Rs. 15 lakhs) Excluding GST
SUSHMA BUILDTECH LTD
SUSHMA INFINIUM ZIRAKPUR SUSHMA JOYNEST ZRK ZIRAKPUR PUNJAB PLUMBING PUMP ROOM WORK (Project Value Rs. 12.4 Lakhs) Excluding GST.
BHARATIYA JANATA PARTY
PROPOSED BJP DISTRICT OFFICE PANCHKULA MCD HARYANA INTERNAL & EXTERNAL PLUMBING, FIRE FIGHTING And ROAD WORK (Project Value Rs. 1.05 Crore
CENTRAL PARK LTD
CENTRAL PARK FLOWER VALLEY-3 GROUP HOUSING GURGAON H.R INTERNAL PLUMBING (Project Value Rs. 58 Lakhs)
SUSHMA BUILDTECH LTD
SUSHMA VALENCIA ZIRAKPUR
PUNJAB INTERNAL PLUMBING WORK
(Project Value Rs. 12.86 Crore) Excluding GST
HOTEL ATUL REGENCY
HOTEL ATUL REGENCY RAMPUR (H.P) INTERNAL & EXTERNAL PLUMBING (Project Value Rs. 39.9 Lakhs)
SUSHMA BUILDTECH LTD
SUSHMA CAPITAL ZIRAKPUR
PUNJAB INTERNAL PLUMBING WORK
(Project Value Rs. 1.95 Crore) Excluding GST
THE MARBELLA GRAND
THE MARBELLA GRAND MOHALI SEC-82 PUNJAB FIRE FIGHTING WORK (Project Value Rs. 12 Lakhs)
VIGILANT MEDIA PVT. LTD
DAILY POST MOHALI SEC 82 INTERNAL AND EXTERNAL PLUMBING WORK (Project Value Rs. 26.9 Lakhs)
SUSHMA BUILDTECH LTD
SUSHMA CRESCENT NEXT ZIRAKPUR
PUNJAB PLUMBING PUMP ROOM WORK
(Project Value Rs. 2.2 Crore) Excluding GST
THE MEDALLION
THE MEDALLION MOHALI SEC-82 PUNJAB INTERNAL PLUMBING & AIR CONDITIONER WORK (Project Value Rs. 10.67 Crore
THE MEDALLION
THE MEDALLION MOHALI SEC 68 PUNJAB INTERNAL PLUMBING & AIR CONDITIONER WORK (Project Value Rs. 1.2 Crore)
SUSHMA BUILDTECH LTD
SUSHMA JOYNEST ZRK ZIRAKPUR
PUNJAB PLUMBING PUMP ROOM WORK
(Project Value Rs. 12.4 Lakhs) Excluding GST
DLF UNIVERSAL LTD
DLF VALLEY PANCHKULA 24 FLATS & DISPENSARY INTERNAL & EXTERNAL PLUMBING WORK (Project Value Rs. 29.9 lakhs) Excluding GST
SUSHMA BUILDTECH LTD
SUSHMA JOYNEST MOH ZIRAKPUR
PUNJAB INTERNAL PLUMBING WORK
(Project Value Rs. 2.5 Crore) Excluding GST
LANDMARK DALMIA GROUP
ANSAL LANDMARK (KARNAL)
TOWNSHIP PVT. LTD.
PHE WORK, CONSTRUCTION OF HARVESTING
PIT, CONSTRUCTION OF COLLECTIOMN TANK,
AND OTHER MISC WORK.
(Project Value Rs. 3.5 Crore)
SUSHMA BUILDTECH LTD
SUSHMA GRANDE NXT ZIRAKPUR
PUNJAB INTERNAL PLUMBING
(Project Value Rs. 1.9 Crore) Excluding GST
PL MARKETING
PLOT NO:- 529 MK TECHNOLOGY
PARK MOHALI FIRE LIGHTING WORK.
(Project Value Rs. 20 LAKH)
GILLCO DEVELOPERS AND BUILDERS PVT. LTD.
GILLCO INTERNATIONAL SCHOOL
(KHARAR) FIRE LIGHTING WORK.
(Project Value Rs. 15 LAKH)
Our Partners
SUSHMA GRANDE ZIRAKPUR PUNJAB INTERNAL PLUMBING WORK (Project Value Rs. 7.67 Crore) Excluding GST