Geomicrobiological Control on Arsenic Heterogeneity – The Taciturn Factor Controlled by Rural Sanitation System

• DOI: 10.20944/preprints202306.2052.v1
• Publication Date: 2023-06-29T00:24:36Z
• Authors: Pinaki Ghosh; Debjani Mandal; Mina Aghababaei; Jishnu Adhikari; Indranil Saha; Jayanta Kumar Biswas; Debashis Chatterjee; Abhishek Basu; Santanu Majumder
• Keywords: Tube well; Pit latrine; Infiltration (HVAC); Water well

Arsenic (As) contamination of groundwater is a common problem in BDP. The alkaline pH the provides favourable condition for geomicrobiochemical processes, where organic matter also plays an important role mobilization As. total arsenic content (AsT) range 69-178 µgL-1 with mean value 118.58 µgL-1. quality monitored drinking water wells are related to local land–use pattern and rural sanitation installation practices (which can have strong influence on microbial contamination). study indicates that As heterogeneity, probably consequence heterogeneity feature area. excessive fecal coliform (TC FC) count ponds possibly suggest uncontrolled surface run offs sewage leakage, notably from nearby pit-latrine, which increased these sources. tube located close proximity (~ 2-3 m) surveyed contaminated high TC FC values, due faulty supply system, pond infiltration cracked well platforms. Coliforms may geomicrobiological processes thereby, contribute release mobilization. values show seasonal variation, during wet season. Attempt has been made focus risk (based scores) usually less explored. sanitary score reveal need immediate attention all sites, as 25.0 %, 58.3 11.1 % 5 six sites fell under very (sanitary ≥ 9), 6-8), intermediate 3-5) low category 0-2), respectively. Fecal classified (FC 10-100 per 100 ml water). predominance particularly areas (showing contamination) observed along similar sinusoidal TC, AsT content. Finally, this shed light factors responsible unsafe nature anthropogenic activities microenvironment groundwater, could be probable reason behind