South 24 Parganas and the Sundarbans are two districts of West Bengal. They were used to be a single district till 2023, when it was split into two.
Bakkhali — a popular beach resort
Diamond Harbour — with beautiful sunsets and a fort, Diamond Harbour is considered an ideal destination for weekend tourists with a perfect escape from the hustle and bustle of cities
Jaynagar Majilpur — famous for its confectionery Jaynagarer Moa
Kakdwip — the gateway to Bakkhali and Sagar
Sagar Island — a deltaic island on the mouth of river Hooghly, a Hindu pilgrimage site with unspoiled beaches
Sundarbans National Park — a with Royal Bengal Tigers and deer found in forests and mangrove swamps
The ground water may not be safe for drinking, as it might be contaminated with arsenic. So you are better off drinking from the municipal or panchayat (village administration) supply of surface water or bottled drinking water of reputed companies, not of ordinary companies, here and there in 24 Parganas, even if those are cheaper by ₹2 per litre.
South 24 Parganas and the Sundarbans have faced several cyclonic storms in the 21st century, most notably Aila (2009) and Amphan (2020). Monsoon rains may reach terrible levels and breed diseases like malaria or dengue. Keep yourself updated with the latest weather news and take precautions against such natural disasters.