<s>[INST] The next text is a question of a member of the European parliament:"The Solofrana is a tributary of the Sarno, in Campania region, and recurrent illegal dumping and an inadequate sewerage system have made it one of the most polluted rivers in Europe. Tests carried out in the last few weeks by the Campania regional environmental protection agency (Arpac) have revealed exceptionally high concentrations of heavy metals, namely: chromium (Cr): 4 713.1 ug/l, aluminium (Al): 9 197.7 ug/l, zinc (Zn): 551.3 ug/l, and phosphorus (P): 6 701 ug/l. High levels of lead (54.9 ug/l), ammonia nitrogen, and aromatic solvents have also been found to exist.   Having regard to Directives 91/271/EEC, 2000/60/EC, and 2008/105/EC, is the Commission monitoring the situation? Have the necessary measures been taken by the proper national authorities?  What steps will the Commission take to protect the environment and public health while ensuring compliance with Union law?"
Analyze carefully the text and assign it to the most relevant policy area among those listed below. Do not explain your answer and return only a number.
Policy area numbers: 1 = Macroeconomics
2 = Civil Rights, Minority Issues and Civil Liberties
3 = Health
4 = Agriculture and Fisheries
5 = Labour, employment and pensions
6 = Education
7 = Environment
8 = Energy
9 = Immigration
10 = Transportation
12 = Law and Crime
13 = Social welfare
14 = Regional and Urban issues and Planning
15 = Banking, finance and domestic commerce issues
16 = Defence
17 = Space, science, technology, and communications issues
18 = Foreign trade
19 = International affairs and foreign aid
20 = Governance and government
21 = Public Lands, Water Management and Territorial Issues
23 = Culture and media
[/INST]. Answer = [7]. </s>
The Solofrana is a tributary of the Sarno, in Campania region, and recurrent illegal dumping and an inadequate sewerage system have made it one of the most polluted rivers in Europe. Tests carried out in the last few weeks by the Campania regional environmental protection agency (Arpac) have revealed exceptionally high concentrations of heavy metals, namely: chromium (Cr): 4 713.1 ug/l, aluminium (Al): 9 197.7 ug/l, zinc (Zn): 551.3 ug/l, and phosphorus (P): 6 701 ug/l. High levels of lead (54.9 ug/l), ammonia nitrogen, and aromatic solvents have also been found to exist.   Having regard to Directives 91/271/EEC, 2000/60/EC, and 2008/105/EC, is the Commission monitoring the situation? Have the necessary measures been taken by the proper national authorities?  What steps will the Commission take to protect the environment and public health while ensuring compliance with Union law?