Request for Proposals: Supply, Installation, and Commissioning of an Automated Gas Chlorination System Hawassa City, Sidama Regional State, Ethiopia & Chemical Dosing Pump Replacement for Adama City water utility’s

Job Description

Procurement Reference No.: SPL/ETH/HW-GCS/ITB/001/2025

Project Title: Design and Build of Automated Chlorination Systems for Hawassa City & Automate & Replacement of Chemical Dosing Pumps for Adama City Water Utilities.

1. Background and Invitation

Splash International, a global nonprofit dedicated to delivering sustainable WASH services to public school children in urban areas, invites qualified international firms to submit sealed bids for the supply, installation, and commissioning of an automated gas chlorination system in Hawassa, capital of Ethiopia’s Sidama Regional State.

This tender is part of Splash’s Citywide Water Treatment Support Project, designed to transition municipal utilities from outdated manual chlorination methods to modern, automated disinfection systems. With a population exceeding 430,000, Hawassa faces public health risks due to inconsistent dosing and limited real-time monitoring. This initiative is fully funded by Splash International and builds on its successful WISE, Phase I program model implemented across Addis Ababa and Bahir Dar. Successful performance may position the winning company for direct engagement in the upcoming expansion to Bahir Dar City, without the need for a separate competitive tender.

In Adama (population: 875,148) (Adama City Administration, 2025), the current water sources are insufficient to meet rising demand. The city is investing in new boreholes around Modjo; however, outdated chlorination systems continue to pose risks. These systems rely heavily on operator judgment for chlorine dosing, which can result in either under-chlorination, allowing pathogens to persist and affecting safety. Human error and varying skill levels exacerbate these risks, particularly in large-scale systems.

To address these systemic issues, this initiative will:

I. Automated chlorination systems provide consistent, accurate chlorine dosing.
Automation reduces human error, enables real-time monitoring, and ensures water safety even under variable demand
II. Strengthen city water utilities by replacing outdated equipment, training staff, and
supporting operational efficiency.

2. Scope of Work

The selected contractor shall be responsible for carrying out the scope of work, which includes, but is not limited to, the following tasks:

1. Conducting a site-specific technical assessment before installation and producing a report detailing the findings, including justification for the proposed technology and approach, to clearly demonstrate the need for this intervention

1. Designing automated chlorination systems & chemical dosing systems tailored to the specific needs of each city.

2. Supplying and installing a city-scale automated gas chlorination system, and automated chemical dosing pumps.

3. Providing spare parts for at least three years, including a chlorine gas supply (drums 100kg each) for the first year.
4. Commissioning the system and ensuring integration with existing infrastructure.

5. Deliver hands-on training for Hawassa Water Utility and Sidama Regional Water, Mines & Energy Bureau staff, including O&M documentation, and Adama water utility staff including documentation. Training should be jointly coordinated by the supplier, Splash, and relevant government partners to ensure alignment and sustainability.

6. Facilitate the establishment of a sustainable supply chain for spare parts, chlorine gas, and other key consumables. The winning company supports Hawassa City Water Utility and the Sidama Region, Water, Mines and Energy Bureau by linking them with reliable suppliers. This ensures continued access to essential inputs for system operation.

7. Providing system calibration and real-time chlorine residual monitoring capabilities.

8. Supporting monitoring and evaluation of post-installation performance.

3. Minimum Eligibility Requirements

Interested firms:
• Must have at least 5 years of proven experience with automated chlorination systems in urban water utility settings.

• Must provide references for similar installations, preferably in East Africa.
• Must submit a qualified technical team experienced in chlorine & chemical dosing systems, instrumentation, and control.
• Must present a clear and feasible work plan (mobilization, installation, commissioning,
training).
• Must demonstrate financial capacity to carry out the assignment.
• Must hold internationally recognized safety and quality certifications.
• Must open and maintain a contact office in Ethiopia if awarded.
• The proposed technology must comply with Ethiopian regulations, and the company must provide all necessary certificates, including internationally issued documents authenticated by the Ethiopian Embassy in the country where the company is based… Learn More