Analysis of Total E. coli and Physico-Chemical Quality of Water in the Location of Sumber Wendit Lanang in Mangliawan Village, Malang Regency

Abstract

Coliform bacteria including E. coli is an indicators of water pollution. The presence of these bacteria indicates contamination and decreased air quality. Wendit Lanang spring meets the daily water needs of the residents of Mangliawan Village. The purpose of this study was to determine the total E. coli and coliform and describe the physico-chemical conditions of the air. This research design used a survey method with a quantitative descriptive approach, analysis with quantitative descriptive statistics and Spearman correlation test. The object of the study was Wendit Lanang Spring Water with a number of samples taken from 3 Stations. The air quality parameters tested were total E. coli/coliform with the petrifilm method and supporting parameters physically (organoleptic test, TDS) and chemically (pH, DO, Cl2) based on the Regulation of the Minister of Health Number 2 of 2023. The total E. coli results at Station 1 were 0 CFU/100 ml, Station 2 were 3 CFU/100 ml, and Station 3 were 6 CFU/100 ml. The total coliform at Station 1 was 1 CFU/100 ml. Meanwhile, Station 2 had 11 CFU/100 ml. Then Station 3 had 43 CFU/100 ml. Physicochemically, the three samples met the quality standards for temperature, TDS, pH, and DO parameters. Meanwhile, the Cl2 parameter did not meet the standard. Organoleptically, all three air samples were colorless, tasteless, and odorless. At the Sumber Wendit Lanang location, the number of bacteria increased followed by a decrease in dissolved oxygen concentration. The best water quality was found at Station 1, but for daily air needs, it requires a boiling process before drinking.

Keywords: coliform, E. coli, petrifilm, water, water quality

ABSTRAK

Bakteri koliform termasuk E. coli adalah salah satu indikator pencemaran air. Keberadaan bakteri ini mengindikasikan adanya kontaminasi dan penurunan kualitas air. Sumber Wendit Lanang memenuhi kebutuhan air sehari-hari bagi warga Desa Mangliawan. Tujuan dari penelitian ini adalah untuk menentukan total E. coli dan koliform serta deskripsi kondisi fisika-kimia air. Rancangan penelitian menggunakan metode survei dengan pendekatan kuantitatif deskriptif dengan analisis statistik deskriptif kuantitatif dan uji korelasi Spearman. Objek penelitian adalah air Sumber Wendit Lanang dengan jumlah sampel yang diambil dari 3 Stasiun. Parameter kualitas air yang diuji berupa total E. coli/koliform dengan metode petrifilm dan parameter penunjang secara fisika (uji organoleptik, TDS) dan kimia (pH, DO, Cl₂) berdasarkan Peraturan Menteri Kesehatan Nomor 2 Tahun 2023. Hasil total E. coli pada Stasiun 1 sebesar 0 CFU/100 ml, Stasiun 2 sebesar 3 CFU/100 ml, serta Stasiun 3 sebesar 6 CFU/100 ml. Total koliform pada Stasiun 1 sebanyak 1 CFU/100 ml. Sedangkan Stasiun 2 sebanyak 11 CFU/100 ml. Kemudian Stasiun 3 sebesar 43 CFU/100 ml. parameter suhu, TDS, pH, dan DO pada ketiga sampel memenuhi standar baku mutu. Sedangkan pada parameter Cl₂, tidak memenuhi standar. Secara organoleptik, ketiga sampel air tidak berwarna, tidak berasa, dan tidak berbau. Di lokasi Sumber Wendit Lanang, jumlah bakteri semakin banyak diikuti konsentrasi oksigen terlarut yang menurun. Kualitas air paling baik terdapat pada Stasiun 1 tetapi untuk kebutuhan air sehari-hari perlu proses pemasakan sebelum diminum.

    Kata kunci: air, E. coli, koliform, kualitas air, petrifilm