 According to PALYJA, the service coverage ratio increased substantially from 34% (1998) to 65% (2010) in its western half of the concession.According to data by the Jakarta Water Supply Regulatory Body, access in the eastern half of the city served by PTJ increased from about 57% in 1998 to about 67% in 2004 but stagnated afterwards.However, other sources cite much lower access figures for piped water supply to houses, excluding access provided through public hydrants