DWASAL

Municipal Road Project in Chamwino

Client: Chamwino District Council – Infrastructure Department Challenge: Poor-quality sand from traditional suppliers led to delays and substandard finishes in road paving and drainage projects. Contractors reported cracking and erosion after short periods.

DWASAL Solution: DWASAL supplied over 3,000m³ of clean, uniformly graded washed sand used in culvert backfilling and road base layers. The quality allowed compaction to meet Tanzania Roads Agency (TANROADS) specifications.

Outcome:

• Improved compaction and drainage.
• Project completed on time with no quality concerns.
• DWASAL entered into a framework agreement for future supply to other district projects.

Affordable Housing Developer in Dodoma

Client: A local private real estate developer – “Dodoma Homes Ltd” Challenge: The client was struggling with high rejection rates of bricks due to impure sand content from unwashed sources. This caused losses, customer complaints, and construction delays.

DWASAL Solution: DWASAL offered bulk supply of washed sand and interlocking paving blocks, with scheduled delivery aligned with construction timelines.

• Brick rejection rates dropped by over 60%.
• Block strength improved due to consistent fine aggregates.
• Client has now standardized on DWASAL products for all residential projects.

Local Women’s Group Making Paving Bricks

Client: Upendo Women Group – A local CBO (community-based organization) in Mpunguzi, Chamwino

Challenge: The group received government funding to run a paving block business but lacked access to high-quality sand, affecting their ability to compete.

DWASAL Solution: DWASAL provided:

1. Discounted washed sand
2. Training on proper sand-to-cement ratios
3. Technical assistance in brick molding and curing.

Outcome:

• The group now produces TBS-standard paving bricks.
• Sales increased by 40% in three months, including supply to public schools and hospitals.
• DWASAL is now a long-term partner, strengthening community empowerment.