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Small, Medium & Large WWTPs

Complete wastewater treatment solutions from 0.3 m³/day to over 10,000 m³/day for residential, commercial, industrial, and municipal applications.
Precision Manufacturing for Water Solutions

Precision Manufacturing for Water Solutions

From design and fabrication to testing and delivery, every product is built to the highest standards.
Containerized Wastewater Treatment Plant

Containerized Wastewater Treatment Plant

MBR or MBBR Technology, 100–10,000 m³/day Capacity, for Scalable Municipal and Industrial Wastewater Treatment.
Mejec SA Small-Scale Johkasou

Mejec SA Small-Scale Johkasou

Space-Saving Design and Flexible Installation, with 1–5 m³/day Capacity for Villas, Homestays and Rural Homes.
Smart Household Wastewater Treatment Systems

Smart Household Wastewater Treatment Systems

Smart, Compact and Reliable Solutions for Wastewater Treatment in Villas, Scenic Areas and Rural Communities.
Johkasou Type Sewage Treatment Plant

Johkasou Type Sewage Treatment Plant

AAO + MBBR Technology, 5–100 m³/day Capacity, with Flexible Above-Ground or Underground Installation.

Top Products

brand story

Mejec: Your Water Treatment Partner, Rooted in North America


Mejec is a dedicated specialist in wastewater and clean water solutions. Our deep local presence means we have a firsthand understanding of the specific challenges, regulations, and needs of the region. By combining our core expertise with true on-the-ground insight, we deliver tailored, effective, and reliable water treatment systems. Partner with Mejec for proven solutions that are built for North America, supported locally.


  • 20 years

    History and Innovation

  • 50000 sqm

    Manufacturing Base

  • 120 milion

    History and Innovation

  • 3000

    Commercial Projects

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Containerized Wastewater Treatment Projects

Containerized Wastewater Treatment Projects

Mejec-The King of Water

A Global Network, A North American Leader.

From the coastlines of California to the industrial hubs of the Great Lakes, from the communities of Ontario to the growing cities of Texas — MEJEC is the trusted name in water treatment.
Our solutions flow across continents, but our footprint is deepest here in North America, where we’ve become a cornerstone for municipalities and industries seeking pure, reliable water.
This map isn't just a showcase of our reach. Every point is a partnership. Every smile is a testament to water transformed.
See the faces of those who trust us with their most vital resource. Join our expanding family where technology meets trust, and clean water knows no borders.
MEJEC. Engineering Water Confidence for a Global Community.

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News & Events

Press Release 2025-12-26

Apply Now! Mejec Partnership Recruitment: Leading Up to 100% Commission!

A Global Market Set for $120B by 2028 — Growing at 6.5% CAGR.
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Press Release 2026-07-06

Become a Mejec Partner and Grow Your Wastewater Treatment Business

Join the Mejec global partner network and grow your wastewater treatment business with advanced sewage treatment systems, OEM support, reliable manufacturing, and customized water treatment solutions.
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Press Release 2026-07-27

Why Global Partners Choose Mejec for Wastewater Treatment Solutions

Partner with Mejec, a professional wastewater treatment manufacturer offering reliable production, technical support, and long-term cooperation. Discover wastewater treatment solutions for distributors, EPC contractors, and global environmental projects.
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Press Release 2026-11-12

Mejec Global Partnerships & Water Treatment Manufacturing Strength

Discover Mejec's growing global partnerships, international customer visits, and batch deliveries of water treatment equipment, backed by reliable manufacturing capabilities and quality commitment.
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