In recent years, however, the quality of well water has improved as a result of the drop in industrial production and the decline in the quantity of chemicals and fuels seeping into the water table.
Tetapi, pada tahun - tahun belakangan ini, kualitas air sumur di sana telah membaik karena menurunnya produksi industri dan berkurangnya jumlah zat kimia dan bahan bakar yang merembes ke lapisan air tanah.