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Envicon Group
2–4 Week Turnaround
Starting at $4,000
P.E.-Stamped Designs

Dewatering Design & Permitting
Keep Your Excavation Dry.

Engineered dewatering solutions for deep excavations, foundation construction, and contaminated site remediation. Permit-ready designs with full regulatory compliance.

Licensed P.E. on Staff NJPDES & NYC DEP Permitted 50+ Dewatering Projects 4.9 Google Rating

Why Professional Dewatering Design Matters

Permit Compliance

Unpermitted groundwater discharge carries fines up to $50,000/day. NJPDES and NYC DEP permits are mandatory before any excavation dewatering.

Contaminated Groundwater

Urban excavations frequently encounter contaminated groundwater requiring treatment before discharge. Proper characterization prevents regulatory violations.

Schedule Protection

Inadequate dewatering causes flooded excavations, schedule delays, and safety hazards. Engineered designs prevent costly construction shutdowns.

Dewatering Services

From permitting through construction oversight, one team managing your dewatering from start to finish.

Dewatering Permit & Compliance

Contractors and developers needing discharge permits before excavation can begin in areas with high groundwater or contaminated sites.

Price$4,000–$8,000
Turnaround2–4 Weeks

Regulatory permitting for construction dewatering discharges including NJPDES permits, NYC DEP sewer discharge permits, and treatment system specifications. We manage the full permit application process and agency correspondence.

What's Included

  • NJPDES or NYC DEP discharge permit application
  • Groundwater characterization sampling
  • Discharge quality analysis & compliance review
  • Treatment system specification (if required)
  • Agency correspondence & permit tracking
  • Compliance monitoring plan

Dewatering System Design

Deep excavation projects, foundation construction, and remediation sites requiring engineered groundwater control in the NY/NJ metro area.

Price$8,000–$20,000
Turnaround3–6 Weeks

Complete dewatering system design including pump sizing, wellpoint or deep well layout, discharge routing, and treatment train design. Engineered solutions for excavations from 10 to 60+ feet deep in challenging urban environments.

What's Included

  • Hydrogeologic assessment & pump test analysis
  • System design (wellpoint, deep well, or sump)
  • Pump sizing & discharge calculations
  • Treatment train design for contaminated groundwater
  • Construction drawings & specifications
  • P.E.-stamped design package

Dewatering Oversight & Monitoring

Active construction sites where ongoing dewatering compliance monitoring is required by NJDEP, NYC DEP, or project specifications.

Price$5,000–$15,000
TurnaroundDuration of Construction

Field engineering oversight during dewatering operations including system startup, discharge compliance monitoring, treatment system optimization, and regulatory reporting. Ensures continuous permit compliance throughout construction.

What's Included

  • System startup & performance verification
  • Discharge sampling & laboratory analysis
  • Treatment system optimization
  • Monthly compliance reporting
  • Regulatory agency correspondence
  • System decommissioning & closure documentation

P.E.-Stamped Engineering

Every dewatering design is prepared and stamped by a licensed Professional Engineer (P.E.) with NYC and NJ certifications. Our designs are accepted by NJDEP, NYC DEP, and meet all applicable building code requirements.

Free Download

Construction Dewatering Design Guide

NJDEP & NYSDEC Discharge Compliance

Construction dewatering planning reference covering treatment system sizing, discharge permits, and stormwater compliance.

Dewatering system sizing worksheets
NJPDES & SPDES discharge permit pathway
Treatment train selection guide
Monitoring & sampling cadence
PDF Guide • Sent to your email

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This document is for informational purposes only and does not constitute professional engineering advice. For project-specific guidance, contact a licensed professional engineer.

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Frequently Asked Questions

Dewatering Design & Permitting Questions

Get answers to common questions about our dewatering design & permitting services, turnaround times, and deliverables.

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