CBPA Basque Country (Vulnerable Areas)

Decree 390/1998, of December 22, establishing regulations for the declaration of Zones Vulnerable to water pollution by nitrates from agricultural activity and approving the Code of Good Agricultural Practices of the Autonomous Community of the Basque Country.
CBPA Basque Country (Non-Vulnerable Zones)

Decree 112/2011, of June 7, approving the Code of Good Agricultural Practices applicable to areas of the Autonomous Community of the Basque Country not declared vulnerable to water pollution by nitrates from agricultural activity.
CBPA Extremadura (Action Program)

Order of March 9, 2009, approving the Action Program applicable to areas vulnerable to nitrate contamination from agricultural sources in Extremadura.
CBPA Extremadura

Order of November 24, 1998, publishing the Code of Good Agricultural Practices in Extremadura.
CBPA Catalonia 1

Order of October 22, 1998, of the Code of Good Agricultural Practices in relation to nitrogen.
CBPA Castilla-La Mancha 1

Resolution of September 24, 1998, of the General Directorate of Agricultural Production, making public the Code of Good Agricultural Practices of Castilla-La Mancha for the protection of waters against pollution caused by nitrates of agricultural origin.
CBPA Andalusia

Resolution of December 12, 1997, of the General Directorate of Agricultural Production, making public the Code of Good Agricultural Practices of Andalusia for the protection of waters against pollution caused by nitrates of agricultural origin.
CBPA Principality of Asturias 1

Resolution of May 26, 1997, of the Ministry of Agriculture, approving the Code of Good Agricultural Practices.
CBPA Aragón (modified)

Decree 226/2005, of November 8, of the Government of Aragon, amending Decree 77/1997, of May 27, of the Government of Aragon, approving the Code of Good Agricultural Practices.
CBPA Aragon

Decree 77/1997, of May 27, of the Government of Aragon, approving the Code of Good Agricultural Practices of the Autonomous Community of Aragon and designating certain areas as Vulnerable Zones for water pollution by nitrates from agricultural sources.