EVALUASI KELAYAKAN TEKNIS DAN FINANSIAL PADA PROYEK INFRASTRUKTUR IPA TANAH MERAH KABUPATEN TANA TIDUNG PROVINSI KALIMANTAN UTARA

WARDHANA, M. TRI MUSWIRA (2025) EVALUASI KELAYAKAN TEKNIS DAN FINANSIAL PADA PROYEK INFRASTRUKTUR IPA TANAH MERAH KABUPATEN TANA TIDUNG PROVINSI KALIMANTAN UTARA. Masters thesis, Universitas 17 Agustus 1945 Surabaya.

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Abstract

Pembangunan infrastruktur dasar, termasuk penyediaan air bersih, merupakan faktor penting dalam meningkatkan kualitas hidup dan pemerataan pembangunan. Kabupaten Tana Tidung, Provinsi Kalimantan Utara, khususnya Desa Tanah Merah, masih menghadapi keterbatasan akses air bersih. Mayoritas masyarakat mengandalkan sumber air permukaan dan sumur gali yang belum memenuhi standar kesehatan, sehingga pembangunan Instalasi Pengolahan Air (IPA) menjadi prioritas. Penelitian ini bertujuan mengevaluasi kelayakan teknis dan finansial proyek IPA Tanah Merah. Evaluasi teknis mencakup kondisi topografi, daya dukung tanah, ketersediaan dan kualitas sumber air, desain unit pengolahan (koagulasi, flokulasi, sedimentasi, filtrasi, disinfeksi), serta ketersediaan material dan tenaga kerja lokal. Evaluasi finansial dilakukan secara kuantitatif menggunakan indikator Net Present Value (NPV), Internal Rate of Return (IRR), Benefit-Cost Ratio (BCR), dan Payback Period (PBP) dengan berbagai skenario: normal, optimis (+10% manfaat), dan pesimis (−10% manfaat atau kenaikan biaya). Hasil penelitian menunjukkan proyek layak secara teknis, dengan topografi mendukung konstruksi, daya dukung tanah memadai, dan unit pengolahan air memenuhi standar nasional. Secara finansial, proyek layak pada kondisi normal (NPV +Rp 441 juta, IRR ≈ 7,8%, BCR ≈ 1,10, PBP dalam batas wajar), dan lebih layak pada skenario optimis. Sebaliknya, pada skenario pesimis, NPV menjadi negatif, IRR < 6%, dan BCR ≤ 1, menunjukkan sensitivitas tinggi terhadap penurunan manfaat atau kenaikan biaya. Titik kritis NPV berada pada tingkat diskonto 7–8%, menekankan perlunya mitigasi risiko finansial

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