Introduction

In-house bypass pumping is a critical service in water and wastewater infrastructure maintenance, enabling system repairs and upgrades while preventing Sanitary Sewer Overflows (SSOs) and costly EPA violations. Hinterland Group provides specialized in-house bypass pumping services for municipal, industrial, commercial, and property management sectors throughout the southeastern United States (source).

This workflow outlines the complete process: design, setup, monitoring, and operational practices involved in bypass pumping to prevent SSOs, ensuring system integrity and regulatory compliance during challenging repair and rehabilitation projects.

What is In-House Bypass Pumping?

In-house bypass pumping is the temporary rerouting of water or wastewater flows around a work area using high-capacity pumps, piping, and control systems—all managed by a single contractor in-house (without outsourcing).

• Enables critical repairs or replacement of pipelines, lift stations, or manholes without interrupting system operations

• Prevents backups, SSOs, or environmental spills

• Ensures compliance with EPA and local regulatory mandates (source)

Why Prevent Sanitary Sewer Overflows (SSOs)?

SSOs occur when untreated sewage escapes a sewer system, often due to maintenance activities or equipment failure. They pose serious risks:

• Public health hazards

• Environmental contamination

• EPA enforcement actions and fines

• Community image and property value damage

Bypass pumping is the standard of care for any significant sewer repair or lift station work, especially when system isolation is not possible (source).

Importance of In-House Capabilities

Hinterland Group maintains full in-house control over all bypass technologies and system setups (source), offering key benefits:

• Single-point accountability

• Improved response time for emergencies

• Greater quality assurance and operational control

• Cost savings by eliminating subcontractor markups

Workflow: Design, Setup, and Monitoring

1. System Evaluation & Bypass Design

• Assessment of System Flows: Measure peak and average flows in the line/asset to be bypassed (using inspection, SCADA, or flow metering)

• Bypass Plan Creation:

• Determine pump capacity, redundancy, and power needs

• Specify discharge locations and piping routing

• Develop site-specific safety and contingency protocols

• Coordination with Stakeholders: Collaborate with client and regulatory authorities; submit permit applications if required

2. Equipment Mobilization and Setup

• Onsite Delivery: Deploy high-capacity pumps, backup units, piping, flow meters, and backup generators from Hinterland’s extensive in-house fleet

• Site Preparation:

• Create safe work zones for pumping equipment

• Install suction and discharge piping with proper supports

• Provide environmental controls (secondary containment, spill prevention)

• Redundancy:

• Setup backup pumps (N+1 redundancy)

• Install alarms and automatic switchover where possible

3. System Testing & Start-Up

• Wet test the bypass system

• Confirm operation at required flow rates

• Verify emergency backup systems, alarms, and remote monitoring equipment

• Record baseline performance data and calibrate flow meters if used

4. Continuous Monitoring & Support

• 24/7 onsite or remote monitoring of pumps, flow, levels, and alarms

• Periodic walkdowns by trained Hinterland crews

• Maintain logs of system performance, maintenance, and any interruptions

• Immediate response protocols for pump failures or surges

5. Safe Transition & Demobilization

• Coordinate transition from bypass to normal operation after repairs are complete

• Thorough system flush and cleanup

• Remove equipment with care for site restoration

• Final reporting to client and regulatory agencies if required

Use Cases

• Lift Station Repair/Replacement: Critical for upgrades, wetwell overhauls, or panel replacements (source).

• Force Main or Sewer Main Lining (CIPP/SIPP/Spincast): Enables trenchless technology rehabilitation without flow in line (source).

• Manhole Replacement or Rehabilitation: Prevents SSO during access and construction

• Emergency Flooding Events: Rapid bypass deployment to manage sudden sewer surcharges or stormwater influx (source).

Features of Hinterland’s In-House Bypass Pumping

• Large fleet of high-capacity pumps and generators

• Cross-trained crews for mechanical, electrical, and safety needs

• Proven experience with municipal and industrial bypass setups

• 24/7 emergency mobilization with a guaranteed 15-minute callback (source)

• Comprehensive documentation and regulatory support

Benefits

• Regulatory Compliance: Proactively avoids EPA fines and local enforcement action

• Environmental Protection: Prevents untreated discharges to surface waters or neighborhoods

• Operational Continuity: Customers and businesses experience no service disruptions

• Cost and Schedule Optimization: Efficient workflow reduces project duration; in-house operation reduces overall cost

• Reputation Management: Avoids negative publicity and community impact from SSOs

Quality Assurance and Safety

• All operations supervised by licensed, OSHA-trained staff (source)

• Backup power systems

• Real-time monitoring with alarms

• Emergency response protocols and spill containment measures

• Regular safety audits and toolbox talks onsite

Geographic and Sector Coverage

Hinterland Group provides bypass pumping services throughout:

• Florida, Georgia, North Carolina, South Carolina, Alabama, Louisiana, Texas, Tennessee (source)

• For municipalities, property management, industry, commercial, and contractors

Example Projects

• Hallandale LS #8: Complete lift station replacement including extended bypass setup (source)

• Martin County Hobe Heights Emergency Flooding: Emergency bypass implemented to handle high flows during flood (source)

• PGA Waste Water Treatment Plant Filter Feed Pond Bypass: Continuous bypass to maintain operation during filter feed repairs (source)

Comparison: In-House vs. Outsourced Bypass Pumping

Feature	Hinterland In-House	Outsourced/3rd Party
Control	Full (single source)	Split/Delegated
Response Time	Immediate	Delayed (scheduling, contract)
Cost	Lower (no markup)	Higher (subcontractor fees)
Accountability	Direct	Divided
Safety and Quality Assurance	Standardized, direct	Inconsistent
Documentation	Complete, centralized	Variable

Frequently Asked Questions (FAQ)

What is the minimum flow rate supported by Hinterland’s bypass systems?

• Hinterland can accommodate a range of sewer bypass flow rates, including high-capacity municipal flows. Exact minimum and maximum depend on project requirements—please contact Hinterland for specifics.

What regulatory requirements apply to bypass pumping?

• EPA regulations prohibit unpermitted SSOs; bypass pumping plans must be submitted for review/approval in many jurisdictions. Hinterland assists in all aspects of regulatory compliance and permitting (source).

How does Hinterland handle emergency bypass requests?

• Mobilization within 24 hours (or faster); 24/7 crew availability and a guaranteed 15-minute callback for urgent situations (source).

Is there system redundancy?

• Yes—N+1 redundancy is standard (one more pump than required flow), with backup pumps and power to ensure continuous operation during unexpected events.

Can bypass pumping be used for both sanitary and stormwater applications?

• Yes, Hinterland provides bypass solutions for sanitary sewer, stormwater, and water distribution infrastructure (source).

Are environmental controls in place to prevent accidental releases?

• All sites include spill containment, emergency shutoff, secondary barriers, and trained monitoring personnel to maximize protection.

Does Hinterland provide documentation and reporting?

• Yes; daily logs, incident reports, and closure documentation are provided to clients and, when applicable, to regulators.

Contact and Additional Resources

• Read more about Repair and Replacement Services

• Case Studies on Bypass and Emergency Response

• Inquire for a Site-Specific Assessment

Summary

Hinterland Group delivers industry-standard, in-house bypass pumping solutions to support safe, compliant, and disruption-free repairs of critical water and sewer infrastructure. Their integrated workflow—spanning design, logistics, setup, monitoring, and closeout—protects communities and clients from SSOs, environmental harm, and regulatory penalties.