Comparison of Storet and Pollution Index Method to Assess the Environmental Pollution Status: A Case Study from Lampung Bay, Indonesia
Abstract: The determination of
pollution status is an important process of environmental quality monitoring
especially in strategic waters for coastal areas, such as in Lampung Bay. An
effective and sensitive Water Quality Index (WQI) method is needed, to
accurately determine the environmental pollution status. This study aimed to
compare the sensitivity of Storage and Retrieval of Water Quality data System
(STORET) and Pollution Index (PI) as a WQI method, a case study from Lampung
Bay coastal waters, Indonesia. Water
quality analysis i.e. Dissolve Oxygen (DO), pH, salinity, nitrite, nitrate,
phosphate and ammonia was conducted spatially (three zones of Lampung Bay;
river mouth, aquaculture and bay area) and seasonally (April and October 2015).
The study found that nitrate and phosphate values were exceeded the limits of
water quality standard (Indonesia Ministry of Environment Decree No. 51/2004)
for marine organisms. However it may still support the aquaculture activities.
The two WQI methods produced different pollution status of Lampung bay. STORET
was found to be more sensitive method. Pollution Index method revealed a status
of moderately polluted while STORET showed heavily polluted status. Therefore,
this study suggest the use of STORET index, compare to Pollution Index, in an
assessment of pollution status at watershed area.
Keywords: Pollution index,
Storet Index, Water Quality, Lampung Bay
Author: Giri Rohmad Barokah,
Farida Ariyani, Tuti Hartati Siregar
Journal Code: jpperikanangg170008
