Water Quality of Maruni Beach – Manokwari Regency

This study aimed to know the concentration of ammoniac, nitrate and orthophosphates cited in quality standard for marine biotas and to determine the water quality by using pollution index.   Concentration of ammoniac and nitrate during the study in Maruni Beach- Manokwari showed that the numbers has higher than environmental  quality standard at the two periods done.  Orthophosphates, on the other hand, was still under the minimum number according to  Keputusan Menteri Lingkungan Hidup No. 51 Tahun 2004 tentang Baku Mutu Air Laut.  Status of water quality in Maruni Beach based on pollution index was in light pollution to medium categories.  Parameters that contributed to the condition was ammoniac and nitrate that over to the limit of environmental standard quality.