METHOD
INDEX FOR NITROGEN POLLUTION RISK GROUNDWATER / AQUIFER
•
•Aquifer Vulnerability:
•
•Class I and IIa ‑ Domestic water supply.  An irreplaceable source of drinking water to substantial population or as ecologically vital.
•Class IIb ‑ Potential source of drinking water.
•Class III ‑ Unlikely to be used as drinking water.                          
•