The institution also says, it is committed to reduce the quantity of non-revenue water-rated at 38% yet international standards require 20.5 percent as the maximum of wastewater.
The latter brings loss of between over Rwf 11 and 13 billion annually.
The figures were revealed on Wednesday during a press conference with WASAC management on the current water distribution and sanitation policy to Rwandans.
The wasted water hinders the Government’s target to achieve universal access to safe water among Rwandans by 2024 walking less than 30 minutes distance to and from public water taps.
The Government, however, plans to cut down wastewater by 25% within five years.
Gisele Umuhumuza, the deputy chief executive of WASAC explained that the 38% non-revenue water incurs the loss of Rwf 11 billion to the Government.
“It sometimes incurs the loss between Rwf 11 and 13 billion. There are always susceptible losses in water distribution activities but we strive to meet 20.5% as international standards. Measuring the loss on these standards, it would be between Rfw 7 and 8 billion,” she said.
Umuhumuza said some water supply systems get ravaged due to old structures, human activities or setting up infrastructures.
“We count over 390 water supply systems that need to be repaired. The 2017 study revealed that we need Rwf 13 billion,” she explained.
WASAC called on everyone to make it their own responsibility to protect infrastructure and shun activities destroying water supply systems like illegal mining and provide information to repair a ravaged system before the situation worsens.
WASAC reports that Rwanda has the capacity to treat over 180,000 cubic meters every day.
It has over 216 000 customers.
The Fifth Integrated Household Living Survey (EICV5) in 2016/2017 indicates that 87.4 percent of Rwandans have access to clean water has increased from 26.3 percent in 1994 and before.
Those who have clean water access in their own homes have increased from 2.6 percent to 9.4 percent