(404) 301-4041

★ Local & Family-Owned

Big Enough to Serve You,
Small Enough to Know You

Metro Atlanta's trusted onsite services partner

10+
Years Experience
200+
Units Available
24/7
Emergency Service

At MAS Onsite Services, you're not just a number. We're a family-owned business with the fleet, the crew, and the commitment to handle projects of any size — while still giving you the personal attention you deserve.

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Wastewater Holding Tanks

Heavy-duty 250-gallon polyethylene tanks for reliable liquid waste storage on any job site or event.

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MAS Onsite Wastewater Holding Tank - 250-Gallon Heavy-Duty Polyethylene

Industrial-Grade Waste Containment

Our 250-gallon Wastewater Holding Tanks are built to handle the demands of construction sites, special events, and temporary installations. Constructed from heavy-duty polyethylene, these low-profile tanks are corrosion-resistant, UV-stabilized, and designed for years of dependable service.

Each tank features reinforced ribbing for structural integrity, multiple inlet/outlet ports for flexible plumbing configurations, and a compact footprint that fits easily under portable restroom trailers or in tight job-site spaces.

250-gallon capacity — ideal for multi-unit restroom setups and extended-duration projects.

Key Features

250-Gallon Capacity

Generous volume handles high-usage scenarios — multi-unit restroom setups, large events, and extended construction projects.

Heavy-Duty Polyethylene

Corrosion-resistant, UV-stabilized construction withstands harsh outdoor conditions and chemical exposure from wastewater.

Low-Profile Design

Compact, flat form factor fits underneath restroom trailers and in tight spaces — maximizing usable site area.

Multiple Inlet/Outlet Ports

Flexible plumbing connections allow easy integration with portable restrooms, sinks, and other sanitation equipment.

Common Applications

🏗

Construction Sites

Long-term waste storage for job sites with multiple portable restrooms.

🎪

Large Events

Festivals, concerts, and sporting events requiring high-capacity waste containment.

🚽

Restroom Trailers

Paired with luxury restroom trailers for self-contained waste management.

Emergency Response

Rapid deployment for disaster relief and emergency sanitation needs.

Tank Specifications

Feature Details
Capacity 250 gallons
Material Heavy-duty polyethylene (HDPE)
Design Low-profile with reinforced ribbing
Connections Multiple inlet/outlet ports for flexible plumbing
UV Resistance UV-stabilized for outdoor use
Service Delivered, installed, and serviced by MAS Onsite

How Our Service Works

From scheduling to pickup, we handle everything so you can focus on your project.

1

Schedule

Request a quote online or call us. We confirm tank quantity, delivery date, and site access details.

2

Deliver & Install

Our crew delivers and positions the tank on-site, connects plumbing to your restroom units, and tests for leaks.

3

Pump & Service

We schedule regular pump-outs based on your usage volume — weekly, bi-weekly, or on-demand for events.

4

Pickup

When your project wraps up, we pump the tank one final time and remove it from your site — no mess left behind.

Frequently Asked Questions

How much waste can a 250-gallon tank hold?

A 250-gallon tank can support approximately 4–6 portable restrooms for one week under normal usage. For high-traffic events, we recommend more frequent pump-outs or additional tanks.

How often do the tanks need to be pumped?

Pumping frequency depends on usage. Construction sites typically need weekly service, while large events may require daily pump-outs. We create a custom service schedule based on your needs.

Can the tank be connected to multiple restrooms?

Yes. Each tank has multiple inlet/outlet ports, allowing you to connect several portable restrooms or handwash stations to a single tank. Our team handles all plumbing connections during setup.

What is the delivery and setup process?

We deliver the tank on a flatbed truck and position it at your specified location. Setup includes leveling, connecting plumbing lines, and testing all connections. The entire process typically takes under an hour.

Are the tanks available for both rental and purchase?

Yes. We offer flexible rental terms (daily, weekly, monthly) as well as outright purchase options. Rental includes delivery, setup, servicing, and pickup. Contact us for pricing.

Do you serve areas outside the Southeast?

We serve all of Georgia and surrounding states. For locations outside the Southeast, delivery fees may apply. Call us at (404) 301-4041 to confirm service availability for your area.

Need Wastewater Storage for Your Project?

Our 250-gallon holding tanks are available for rental or purchase. We deliver, install, and service — so you can focus on the job.

Request a Quote Call (404) 301-4041
Non-Potable Water Supply Tank
Construction Portable Restroom with Wastewater Service
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