Analisa penyediaan air bersih curah/bulk water dengan skema kerjasama pemerintah dan swasta (KPS) (studi kasus : Southern Bali Water Supply) = Analysis of water supply bulk bulk water with a public private partnership scheme (PPP) case study Southern Bali Water Supply / I Putu Ari Sanjaya

Lahan basah buatan sebagai prasarana pengolah air limbah domestik di perkotaan = Constructed wetland as a domestic waste water treatment in urban area

Implementasi kebijakan pajak air tanah di DKI Jakarta dalam menanggulangi eksternalitas negatif akibat pemakaian air tanah = Groundwater tax implementation in Jakarta Province to anticipate overdrawing of groundwater negative externalities

Analisis temporal keandalan self-supply sebagai sumber air minum di Kota Bekasi (Lokasi studi : Kelurahan Jatiluhur, Kelurahan Sumur Batu, dan Kelurahan Jatirangga) = Temporal analysis of self-supply reliability as a source of drinking water In Bekasi City (Study location: Jatiluhur Village, Sumur Batu Village, And Jatirangga Village).

Kesediaan Untuk Membayar (WTP) Penyediaan Air dengan Sea Water Reverse Osmosis (SWRO) Bagi Masyarakat di Kelurahan Pulau Panggang Kabupaten Administrasi Kepulauan Seribu = Willingness to pay (WTP) for Providing Water with Sea Water Reverse Osmosis (SWRO) for Communities in Panggang Island Subdistrict, Seribu Islands Administrative Regency