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Borehole Drilling Made Easy with Antonliner systems Limited 1️⃣ Hydrological survey – Determines water depth & soil formation. 2️⃣ Permits (WARMA & NEMA) – Ensuring compliance. 3️⃣ Drilling & casing – Steel/PVC casing based on soil type. 4️⃣ Test pumping – Determines borehole yield.