Sachet Water Line Case: 3,000 BPH Automatic Pouch Water Plant in Tanzania

In many developing markets across East Africa, sachet (pouch) water is the most affordable form of safe drinking water, sold in sealed 500 ml pouches for a few cents each. For a first-time investor, however, building a sachet water plant raises many practical questions: How is the raw water treated? What equipment is required? How much space, power and labor are needed? And how quickly can the investment pay back?

This case study documents a complete sachet water project that zoolinked mechanical designed, manufactured and commissioned for a startup entrepreneur in Dar es Salaam, Tanzania. It walks through every stage — from raw water analysis to a fully operating 3,000 pouch/hour line — so that prospective investors can understand exactly what a turnkey packaged drinking water solution involves.

Project Overview

Item	Detail
Location	Dar es Salaam, Tanzania
Product	500 ml sealed drinking water pouches (sachets)
Designed capacity	3,000 pouches per hour
Water source	Municipal supply + borehole backup
Plant footprint	Approx. 120 m² (production + storage)
Operators required	2 per shift
Scope	Turnkey: design, manufacturing, installation, commissioning, training

1. Project Background & Client Requirements

The client targeted low-income urban and peri-urban consumers who purchase sealed pouches of water daily. Local tap water in the area was unreliable and often unsafe to drink without boiling, so demand for hygienic, affordable packaged water was strong and growing steadily.

As a first-time operator with a small team, the client set several clear requirements for the project:

• A compact plant that could fit into a modest rented building of around 120 m²
• Simple, robust equipment that non-technical staff could operate after short training
• Output high enough to serve local demand yet affordable to invest in — targeting 3,000 pouches/hour
• Water quality that reliably meets local drinking water safety standards
• Low running cost per pouch to stay competitive in a price-sensitive market

2. Raw Water Analysis

Every reliable packaged water line begins with an analysis of the raw water source. Before finalizing the design, our engineers reviewed the client’s water quality report. The municipal and borehole water showed moderate hardness, elevated turbidity during the rainy season, and occasional microbial risk — typical of the region.

Based on these results, we specified a treatment train capable of removing suspended solids, dissolved salts, hardness and micro-organisms, while keeping operating cost low. The key parameters that drove the design were:

• Turbidity: variable, higher in rainy season → requires multi-media pre-filtration
• Total hardness: moderate → softening / RO required to protect taste and equipment
• TDS (total dissolved solids): moderate → two-stage RO for stable low-TDS output
• Microbial risk: present → UV + ozone disinfection for a double safety barrier

3. Turnkey Solution & Process Flow

zoolinked mechanical supplied a complete packaged drinking water production line, integrating three stages: water pretreatment, purification & disinfection, and automatic pouch filling & packaging. The overall process flow is as follows:

1. Raw water tank → feed pump
2. Multi-media (quartz sand) filter — removes suspended solids and turbidity
3. Activated carbon filter — removes chlorine, odor and organic matter
4. Water softener — reduces hardness to protect the RO membranes
5. 5 µm security (cartridge) filter — final protection before RO
6. Two-stage reverse osmosis (RO) system — removes dissolved salts, delivering stable low-TDS purified water
7. Purified water storage tank (SUS304) — buffers treated water
8. UV sterilizer + ozone generator — dual disinfection before filling
9. Automatic sachet filling & sealing machine — forms, fills and seals 500 ml pouches
10. Date coding → shrink-wrap packing → finished goods for distribution

4. Equipment Configuration

The line was configured to balance reliability, hygiene and low investment cost. Core equipment included:

Equipment	Specification / Function
Multi-media filter	SUS304 / FRP, removes turbidity & suspended solids
Activated carbon filter	Removes residual chlorine, color and odor
Water softener	Automatic resin softener, protects RO membranes
Two-stage RO system	2 m³/h, low-TDS stable purified water output
Purified water tank	SUS304 sanitary storage tank
UV + ozone disinfection	Dual sterilization barrier before filling
Automatic sachet machine	Form-fill-seal, 3,000 pouches/hour, 500 ml
Coding & packing	Date/batch coder + shrink-wrap for distribution

5. Installation & Commissioning

After manufacturing and factory testing, the equipment was shipped to Dar es Salaam. Our engineers guided the on-site layout to make the best use of the 120 m² space, keeping a clean flow from water treatment through to sealed-pouch storage.

The full installation and commissioning was completed in under three weeks, including:

• Positioning and connecting the water treatment skid and RO system
• Setting up the storage tank, UV and ozone disinfection units
• Installing and calibrating the automatic sachet filling & sealing machine
• Trial runs with water quality testing to confirm output met drinking water standards
• Seal-strength and fill-volume checks to ensure consistent pouch quality

6. Operator Training

Because the client’s team had no prior experience with water plant equipment, hands-on operator training was a core part of the project. Our engineers trained the two-person crew on:

• Daily start-up, shutdown and cleaning (CIP) procedures
• Monitoring RO performance and replacing filter cartridges
• Operating the sachet machine and adjusting seal temperature and fill volume
• Basic troubleshooting and routine maintenance to minimize downtime

7. Results & Return on Investment

Following commissioning and training, the plant reached stable output of 3,000 sealed pouches per hour with just two workers per shift. The consistent seal quality and reliable water safety allowed the client’s brand to compete effectively in the local sachet water market from day one.

• Stable output: 3,000 pouches/hour, ~24,000 pouches per 8-hour shift
• Labor: only 2 operators per shift, keeping unit cost low
• Quality: purified water consistently met local drinking water standards
• Low per-unit cost enabled competitive retail pricing and fast market uptake

Thanks to low labor and running costs combined with strong local demand, the client was able to recover the core investment within the first year of operation and is now considering a second line to expand capacity.

Conclusion

This Tanzania sachet water project shows how a well-designed, right-sized packaged drinking water line can turn strong local demand into a profitable, sustainable business — even for a first-time operator. From raw water analysis and process design through manufacturing, installation and training, zoolinked mechanical delivered a complete turnkey solution built for reliability and low operating cost.