Water Quality Monitoring
Groundwater and surface water monitoring to support development, manage risk, and meet EPA and planning requirements.
Need trusted water quality monitoring on the Central Coast? At Confluence Environmental, we deliver expert groundwater and surface water testing services tailored to support development approvals, EPA compliance, and contaminated land management across the Central Coast region.
From Gosford to Wyong, Woy Woy, and surrounding areas, our consultants provide timely, cost-effective water assessments to help you meet regulatory obligations and protect sensitive waterways, aquifers, and ecosystems.
Why Monitor Groundwater and Surface Water on the Central Coast?
Monitoring is often required for:
Development applications (DAs) and planning approvals
EPA licensing and POEO Act compliance
Contaminated land assessments and remediation
Resource recovery and waste classification
Acid sulfate soil and salinity risk management
Industrial and infrastructure operations
Baseline data collection and environmental impact monitoring
Whether you’re preparing a submission, investigating pollution, or validating remediation, we deliver reliable data — and expert advice you can act on.
Our Central Coast Water Monitoring Services
We tailor each monitoring program to your site's conditions, consent requirements, and regulatory drivers.
Groundwater Monitoring – Central Coast
Our groundwater services include:
Installation and gauging of monitoring wells
Low-flow purging and sampling for representative results
Field testing: pH, EC, DO, redox, turbidity, temperature
Laboratory analysis of metals, nutrients, hydrocarbons, PFAS, and more
Depth-to-groundwater measurements and seasonal tracking
Plume delineation and contaminant migration studies
Guideline comparison against NEPM (ASC) and ANZG 2018
Used for:
✓ Fuel site investigations
✓ Landfill and leachate monitoring
✓ Remediation verification
✓ Baseline and impact assessments
Surface Water Monitoring – Central Coast
We monitor creeks, wetlands, stormwater, and catchments with:
Grab sampling and sediment analysis
Field measurements and NATA-accredited lab testing
Flow condition assessment and aquatic ecosystem considerations
Comparisons against ANZG 2018 Guidelines, council objectives, or EPL limits
Development impact monitoring near waterways and riparian zones
Used for:
✓ Construction near sensitive environments
✓ Biodiversity offsets and waterway protection
✓ Stormwater quality and site runoff assessments
✓ Ongoing EPA programs or local consent conditions
Regulatory Compliance & Reporting
We prepare audit-ready reports that meet the requirements of:
NSW EPA Environmental Protection Licences (EPLs)
POEO Act and council development consents
Baseline monitoring for planning and due diligence
Remediation validation and contaminated land documentation
Annual returns, progress reports, and environmental management plans
All data is presented in clear, defensible reports ready for submission to councils, certifiers, or regulators.
Who We Support on the Central Coast
Developers and construction contractors
Environmental consultants and planners
EPA-licensed premises and fuel stations
Local government and public land managers
Quarry operators and waste facility managers
Landowners near creeks, wetlands, or groundwater-dependent ecosystems
Whether you're building near a sensitive waterway, responding to contamination, or managing a licensed site — we’ll help you monitor, report, and manage environmental risks with confidence.
Why Choose Confluence Environmental?
Central Coast-based environmental consultants
NATA-accredited lab testing and rigorous field methods
Aligned with NEPM, ANZG, POEO Act, and council guidelines
Efficient, responsive, and site-specific service
Reports that are practical, visual, and regulator-ready
We don't just collect water data — we help you understand it, interpret it, and use it to move forward.
Areas We Service on the Central Coast
We provide groundwater and surface water monitoring across:
Gosford
Wyong
Woy Woy
Tuggerah and Lake Munmorah
Terrigal, Erina, and Kincumber
Somersby and Central Coast hinterland
Plus Sydney, Newcastle, the Hunter, and wider NSW
Book a Water Monitoring Program Today
Need a quote or advice on what type of monitoring your site requires?
Contact Confluence Environmental — your trusted local partner for groundwater and surface water assessments on the Central Coast.
Call 0493 042 642 or drop us an enquiry below to request a quote or consultation.
Frequently Asked Questions (FAQ) - Groundwater & Surface Water Monitoring
Why is groundwater and surface water monitoring important?
Monitoring helps detect and manage environmental risks early. It supports:
Early identification of groundwater or surface water contamination from industrial, urban, or agricultural sources
Protection of sensitive ecosystems, aquatic life, and drinking water supplies
Compliance with NSW environmental regulations, including EPA licence conditions, planning approvals, and the Protection of the Environment Operations Act 1997 (POEO Act)
Baseline data collection before development or remediation activities
What are the common sources of water contamination?
Typical causes of water quality impacts in NSW include:
Leaking underground petroleum storage systems (UPSS), especially at fuel stations
Chemical spills or discharges from industrial sites
Stormwater runoff carrying sediment, nutrients, pesticides, or hydrocarbons
Landfill leachate or contaminated fill material
Disturbance of acid sulfate soils, releasing sulfuric compounds into water systems
How often should water quality monitoring be conducted?
Monitoring frequency depends on your site’s regulatory requirements, contamination risk, and project phase. Common scenarios include:
Quarterly or annual sampling for routine environmental compliance or long-term site monitoring
Monthly or rainfall-triggered sampling for high-risk sites or active remediation areas
Short-term intensive programs for due diligence, development approvals, or baseline studies
We tailor every monitoring program to suit your site's conditions and obligations.
What happens if contamination is detected in groundwater or surface water?
If results show elevated levels of pollutants (e.g. heavy metals, hydrocarbons, nutrients):
A Detailed Site Investigation (DSI) may be required to define the extent and risk
A Remediation Action Plan (RAP) may be developed to address contamination
Ongoing water monitoring and reporting is usually required to track progress and ensure regulatory compliance
Confluence Environmental can guide you through each step of this process.
Can Confluence Environmental help with EPA and council compliance?
Absolutely. We offer:
Site-specific water monitoring programs
Sampling and laboratory analysis using approved methods
Regulatory reporting suitable for NSW EPA, local councils, and water authorities
Expert guidance on interpreting results and managing environmental obligations
Our team ensures you stay compliant — and avoid costly delays, penalties, or remediation missteps.