Analysis of Cadmium (Cd) Heavy Metal Levels in Groundwater around Lapindo Mudflow, Sidoarjo Regency

Background & Objective: Metal pollution in Lapindo mudflow is a cause of pollution because the mud
contains various heavy metals, including cadmium (Cd). Cadmium is a heavy metal with high toxicity
and is included in non-essential heavy metals. Hence, the presence of heavy metal cadmium (Cd) needs
to be known for sure because too high levels can harm health and the surrounding environment. This
study aims to determine cadmium (Cd) heavy metal levels in groundwater around Lapindo Mudflow,
Sidoarjo Regency.
Method: The research conducted in this study employed a descriptive design methodology. To ensure
accuracy and precision in selecting the participants, purposive sampling was utilized, with a dual
examination process consisting of 4 distinct points. The end result was a sample size of 8 participants
that were selected with great care.
Results: The findings indicated that after examining 8 samples, it was observed that all of the samples
retained their compliance with the SNI standards. The results showed a 100% compliance rate.
Conclusion: Based on the results of the study, it can be inferred that the average concentration of
0.5075 × 10-4 mg/L falls within the acceptable range as per the Indonesian National Standard (SNI),
which specifies the acceptable range of 0.5 - 10.0 mg/L or 0.0005 - 0.001 mg/L. Therefore, the study
results are in compliance with the SNI's requirements