{"query":{"parameter":"arsenic","place":"MX","medium":null,"statistic":null,"kind":null},"searched":{"places":["MX"],"parameter_keys":["cas:7440-38-2","name:arsenic (+3)","name:arsenic, cadmium (h), copper (h), lead (h), mercury, zinc","name:arsenic, cadmium (h), copper (h), lead (h), zinc","name:arsenic, dissolved","name:arsenic iii","name:arsenic extractible","name:arsenic - total","name:arsenic, total","name:arsenic v","name:chemical oxygen demand, arsenic, radium (dissolved and total, uranium, zinc","name:total arsenic"],"names_matched":[["arsenic","cas:7440-38-2"],["arsenic 3","name:arsenic (+3)"],["arsenic 3 total recoverable","name:arsenic (+3)"],["arsenic cadmium h copper h lead h mercury zinc","name:arsenic, cadmium (h), copper (h), lead (h), mercury, zinc"],["arsenic cadmium h copper h lead h mercury zinc h","name:arsenic, cadmium (h), copper (h), lead (h), mercury, zinc"],["arsenic cadmium h copper h lead h zinc","name:arsenic, cadmium (h), copper (h), lead (h), zinc"],["arsenic cadmium h copper h lead h zinc h","name:arsenic, cadmium (h), copper (h), lead (h), zinc"],["arsenic dissolved","name:arsenic, dissolved"],["arsenic dissolved trivalent","name:arsenic iii"],["arsenic extractible","name:arsenic extractible"],["arsenic iii","name:arsenic iii"],["arsenic iii dissolved","name:arsenic iii"],["arsenic iii total recoverable","name:arsenic iii"],["arsenic total","name:arsenic - total"],["arsenic total","name:arsenic, total"],["arsenic trivalent","name:arsenic iii"],["arsenic trivalent dissolved","name:arsenic iii"],["arsenic v","name:arsenic v"],["chemical oxygen demand arsenic radium dissolved and total uranium zinc","name:chemical oxygen demand, arsenic, radium (dissolved and total, uranium, zinc"],["chemical oxygen demand arsenic radium dissolved and total uranium zinc h","name:chemical oxygen demand, arsenic, radium (dissolved and total, uranium, zinc"],["dissolved arsenic","name:arsenic, dissolved"],["total arsenic","name:arsenic - total"],["total arsenic","name:arsenic, total"],["total arsenic","name:total arsenic"],["total arsenic freshwater","name:total arsenic"],["total arsenic marine","name:total arsenic"]],"match":"exact+contains","order":"The place's own instruments first, then each place above it, each in its register's order"},"total":25,"offset":0,"returned":25,"next_offset":null,"rows":[{"id":"d761c07771878a96","parameter":"Arsénico","value":"0,2","value_num":0.2,"unit":"mg/L","statistic":"monthly_avg","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7440-38-2","place":["MX"],"conditions":["route is direct","receiving_water is freshwater","cuerpo receptor: Ríos, arroyos, canales, drenes"],"cite":{"instrument":"mx_nom001_semarnat_2021","title":"NOM-001-SEMARNAT-2021 — límites permisibles de contaminantes en las descargas de aguas residuales en cuerpos receptores propiedad de la nación: Tabla 1 (contaminantes básicos) and Tabla 2 (metales y cianuros)","issuer":"Secretaría de Medio Ambiente y Recursos Naturales (SEMARNAT), Estados Unidos Mexicanos","edition":"DOF 11/03/2022 (in force 365 days after publication; 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Tablas 1 and 2 from 3 April 2023; true colour and acute toxicity from the fourth year after publication — Transitorios Primero to Tercero)","source_url":"https://dof.gob.mx/nota_detalle.php?codigo=5645374&fecha=11/03/2022","source_sha256":"0e4017b05758d4a0a24cb7376ac9abee09f0ab5d67974a4bb3b47c37c022807f","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-20","status":"changed","changed_on":"2026-10-17","says":"Source changed on or before 2026-10-17, not yet re-read: these rows are as read from DOF 11/03/2022 (in force 365 days after publication; Tablas 1 and 2 from 3 April 2023; true colour and acute toxicity from the fourth year after publication — Transitorios Primero to Tercero)."},"section":"NOM-001-SEMARNAT-2021, Tabla 2 (límites permisibles para metales y cianuros)","page":null,"quote":"Arsénico 0,2 0,3 0,4 0,1 0,15 0,2 0,2 0,3 0,4 0,2 0,3 0,4 0,1 0,15 0,2 0,1 0,15 0,2"}},{"id":"15b71c33b0781514","parameter":"Arsénico","value":"0,15","value_num":0.15,"unit":"mg/L","statistic":"daily_avg","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7440-38-2","place":["MX"],"conditions":["route is direct","cuerpo receptor: Suelo — Infiltración y otros riegos"],"cite":{"instrument":"mx_nom001_semarnat_2021","title":"NOM-001-SEMARNAT-2021 — límites permisibles de contaminantes en las descargas de aguas residuales en cuerpos receptores propiedad de la nación: Tabla 1 (contaminantes básicos) and Tabla 2 (metales y cianuros)","issuer":"Secretaría de Medio Ambiente y Recursos Naturales (SEMARNAT), Estados Unidos Mexicanos","edition":"DOF 11/03/2022 (in force 365 days after publication; Tablas 1 and 2 from 3 April 2023; true colour and acute toxicity from the fourth year after publication — Transitorios Primero to Tercero)","source_url":"https://dof.gob.mx/nota_detalle.php?codigo=5645374&fecha=11/03/2022","source_sha256":"0e4017b05758d4a0a24cb7376ac9abee09f0ab5d67974a4bb3b47c37c022807f","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-20","status":"changed","changed_on":"2026-10-17","says":"Source changed on or before 2026-10-17, not yet re-read: these rows are as read from DOF 11/03/2022 (in force 365 days after publication; Tablas 1 and 2 from 3 April 2023; true colour and acute toxicity from the fourth year after publication — Transitorios Primero to Tercero)."},"section":"NOM-001-SEMARNAT-2021, Tabla 2 (límites permisibles para metales y cianuros)","page":null,"quote":"Arsénico 0,2 0,3 0,4 0,1 0,15 0,2 0,2 0,3 0,4 0,2 0,3 0,4 0,1 0,15 0,2 0,1 0,15 0,2"}},{"id":"e375db934a26950e","parameter":"Arsénico","value":"0,2","value_num":0.2,"unit":"mg/L","statistic":"instant","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7440-38-2","place":["MX"],"conditions":["route is direct","cuerpo receptor: Suelo — Infiltración y otros riegos"],"cite":{"instrument":"mx_nom001_semarnat_2021","title":"NOM-001-SEMARNAT-2021 — límites permisibles de contaminantes en las descargas de aguas residuales en cuerpos receptores propiedad de la nación: Tabla 1 (contaminantes básicos) and Tabla 2 (metales y cianuros)","issuer":"Secretaría de Medio Ambiente y Recursos Naturales (SEMARNAT), Estados Unidos Mexicanos","edition":"DOF 11/03/2022 (in force 365 days after publication; Tablas 1 and 2 from 3 April 2023; true colour and acute toxicity from the fourth year after publication — Transitorios Primero to Tercero)","source_url":"https://dof.gob.mx/nota_detalle.php?codigo=5645374&fecha=11/03/2022","source_sha256":"0e4017b05758d4a0a24cb7376ac9abee09f0ab5d67974a4bb3b47c37c022807f","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-20","status":"changed","changed_on":"2026-10-17","says":"Source changed on or before 2026-10-17, not yet re-read: these rows are as read from DOF 11/03/2022 (in force 365 days after publication; Tablas 1 and 2 from 3 April 2023; true colour and acute toxicity from the fourth year after publication — Transitorios Primero to Tercero)."},"section":"NOM-001-SEMARNAT-2021, Tabla 2 (límites permisibles para metales y cianuros)","page":null,"quote":"Arsénico 0,2 0,3 0,4 0,1 0,15 0,2 0,2 0,3 0,4 0,2 0,3 0,4 0,1 0,15 0,2 0,1 0,15 0,2"}},{"id":"ab129fc39c3f3f0a","parameter":"Arsénico","value":"0,1","value_num":0.1,"unit":"mg/L","statistic":"monthly_avg","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7440-38-2","place":["MX"],"conditions":["route is direct","cuerpo receptor: Suelo — Cárstico"],"cite":{"instrument":"mx_nom001_semarnat_2021","title":"NOM-001-SEMARNAT-2021 — límites permisibles de contaminantes en las descargas de aguas residuales en cuerpos receptores propiedad de la nación: Tabla 1 (contaminantes básicos) and Tabla 2 (metales y cianuros)","issuer":"Secretaría de Medio Ambiente y Recursos Naturales (SEMARNAT), Estados Unidos Mexicanos","edition":"DOF 11/03/2022 (in force 365 days after publication; Tablas 1 and 2 from 3 April 2023; true colour and acute toxicity from the fourth year after publication — Transitorios Primero to Tercero)","source_url":"https://dof.gob.mx/nota_detalle.php?codigo=5645374&fecha=11/03/2022","source_sha256":"0e4017b05758d4a0a24cb7376ac9abee09f0ab5d67974a4bb3b47c37c022807f","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-20","status":"changed","changed_on":"2026-10-17","says":"Source changed on or before 2026-10-17, not yet re-read: these rows are as read from DOF 11/03/2022 (in force 365 days after publication; Tablas 1 and 2 from 3 April 2023; true colour and acute toxicity from the fourth year after publication — Transitorios Primero to Tercero)."},"section":"NOM-001-SEMARNAT-2021, Tabla 2 (límites permisibles para metales y cianuros)","page":null,"quote":"Arsénico 0,2 0,3 0,4 0,1 0,15 0,2 0,2 0,3 0,4 0,2 0,3 0,4 0,1 0,15 0,2 0,1 0,15 0,2"}},{"id":"d01860b74edd573b","parameter":"Arsénico","value":"0,15","value_num":0.15,"unit":"mg/L","statistic":"daily_avg","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7440-38-2","place":["MX"],"conditions":["route is direct","cuerpo receptor: Suelo — Cárstico"],"cite":{"instrument":"mx_nom001_semarnat_2021","title":"NOM-001-SEMARNAT-2021 — límites permisibles de contaminantes en las descargas de aguas residuales en cuerpos receptores propiedad de la nación: Tabla 1 (contaminantes básicos) and Tabla 2 (metales y cianuros)","issuer":"Secretaría de Medio Ambiente y Recursos Naturales (SEMARNAT), Estados Unidos Mexicanos","edition":"DOF 11/03/2022 (in force 365 days after publication; Tablas 1 and 2 from 3 April 2023; true colour and acute toxicity from the fourth year after publication — Transitorios Primero to Tercero)","source_url":"https://dof.gob.mx/nota_detalle.php?codigo=5645374&fecha=11/03/2022","source_sha256":"0e4017b05758d4a0a24cb7376ac9abee09f0ab5d67974a4bb3b47c37c022807f","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-20","status":"changed","changed_on":"2026-10-17","says":"Source changed on or before 2026-10-17, not yet re-read: these rows are as read from DOF 11/03/2022 (in force 365 days after publication; Tablas 1 and 2 from 3 April 2023; true colour and acute toxicity from the fourth year after publication — Transitorios Primero to Tercero)."},"section":"NOM-001-SEMARNAT-2021, Tabla 2 (límites permisibles para metales y cianuros)","page":null,"quote":"Arsénico 0,2 0,3 0,4 0,1 0,15 0,2 0,2 0,3 0,4 0,2 0,3 0,4 0,1 0,15 0,2 0,1 0,15 0,2"}},{"id":"9ad9c396f4a370f3","parameter":"Arsénico","value":"0,2","value_num":0.2,"unit":"mg/L","statistic":"instant","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7440-38-2","place":["MX"],"conditions":["route is direct","cuerpo receptor: Suelo — Cárstico"],"cite":{"instrument":"mx_nom001_semarnat_2021","title":"NOM-001-SEMARNAT-2021 — límites permisibles de contaminantes en las descargas de aguas residuales en cuerpos receptores propiedad de la nación: Tabla 1 (contaminantes básicos) and Tabla 2 (metales y cianuros)","issuer":"Secretaría de Medio Ambiente y Recursos Naturales (SEMARNAT), Estados Unidos Mexicanos","edition":"DOF 11/03/2022 (in force 365 days after publication; Tablas 1 and 2 from 3 April 2023; true colour and acute toxicity from the fourth year after publication — Transitorios Primero to Tercero)","source_url":"https://dof.gob.mx/nota_detalle.php?codigo=5645374&fecha=11/03/2022","source_sha256":"0e4017b05758d4a0a24cb7376ac9abee09f0ab5d67974a4bb3b47c37c022807f","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-20","status":"changed","changed_on":"2026-10-17","says":"Source changed on or before 2026-10-17, not yet re-read: these rows are as read from DOF 11/03/2022 (in force 365 days after publication; Tablas 1 and 2 from 3 April 2023; true colour and acute toxicity from the fourth year after publication — Transitorios Primero to Tercero)."},"section":"NOM-001-SEMARNAT-2021, Tabla 2 (límites permisibles para metales y cianuros)","page":null,"quote":"Arsénico 0,2 0,3 0,4 0,1 0,15 0,2 0,2 0,3 0,4 0,2 0,3 0,4 0,1 0,15 0,2 0,1 0,15 0,2"}},{"id":"7ad55c9d837a127f","parameter":"Arsénico","value":"0.025","value_num":0.025,"unit":"mg/L","direction":"max","kind":"limit","medium":"drinking_water","level":"national","parameter_key":"cas:7440-38-2","place":["MX"],"conditions":["NOTA 1 Los límites permisibles de metales y metaloides se refieren a su concentración total en el agua, la cual incluye los suspendidos y los disueltos.","a El límite permisible para arsénico será de 0.025 mg/L para todas las localidades y se ajustará de conformidad con la tabla de cumplimiento gradual Tabla 5 de este inciso 5.4."],"cite":{"instrument":"mx_nom127_ssa1_2021","title":"NOM-127-SSA1-2021 — Agua para uso y consumo humano. Límites permisibles de la calidad del agua: Tablas 1 to 14 and Apéndice A Normativo, Tablas A.1 to A.3","issuer":"Secretaría de Salud (Comisión Federal para la Protección contra Riesgos Sanitarios), Estados Unidos Mexicanos","edition":"DOF 02/05/2022 (in force 360 natural days from the day after publication — 10. Vigencia; turbidity 3.0 UNT from the second year after entry into force — Tabla 1 note a; fluoride 1.0 mg/L, arsenic 0.01 mg/L and cadmium 0.003 mg/L one, three or six years after entry into force by locality size — Tablas 3 and 5; repeals the 2000 modification of NOM-127-SSA1-1994 — Transitorio Único)","source_url":"https://dof.gob.mx/nota_detalle.php?codigo=5650705&fecha=02/05/2022","source_sha256":"ccafe3317244274e237d8bfc92051f8396f8d3342782d37d7b4e954099889b46","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-16","status":"not verified"},"section":"NOM-127-SSA1-2021, Tabla 4 (especificaciones sanitarias de metales y metaloides)","page":null,"quote":"Arsénico a 0.025 mg/L"}},{"id":"3df9b039ff548f6b","parameter":"Arsénico","value":"0.01","value_num":0.01,"unit":"mg/L","direction":"max","kind":"limit","medium":"drinking_water","level":"national","parameter_key":"cas:7440-38-2","place":["MX"],"conditions":["NOTA 1 Los límites permisibles de metales y metaloides se refieren a su concentración total en el agua, la cual incluye los suspendidos y los disueltos.","localidad: Mayor de 500,000 habitantes","año: Un año posterior a la entrada en vigor de la presente Norma","Esta Norma entrará en vigor a los 360 días naturales contados a partir del día siguiente de su publicación en el Diario Oficial de la Federación."],"cite":{"instrument":"mx_nom127_ssa1_2021","title":"NOM-127-SSA1-2021 — Agua para uso y consumo humano. Límites permisibles de la calidad del agua: Tablas 1 to 14 and Apéndice A Normativo, Tablas A.1 to A.3","issuer":"Secretaría de Salud (Comisión Federal para la Protección contra Riesgos Sanitarios), Estados Unidos Mexicanos","edition":"DOF 02/05/2022 (in force 360 natural days from the day after publication — 10. Vigencia; turbidity 3.0 UNT from the second year after entry into force — Tabla 1 note a; fluoride 1.0 mg/L, arsenic 0.01 mg/L and cadmium 0.003 mg/L one, three or six years after entry into force by locality size — Tablas 3 and 5; repeals the 2000 modification of NOM-127-SSA1-1994 — Transitorio Único)","source_url":"https://dof.gob.mx/nota_detalle.php?codigo=5650705&fecha=02/05/2022","source_sha256":"ccafe3317244274e237d8bfc92051f8396f8d3342782d37d7b4e954099889b46","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-16","status":"not verified"},"section":"NOM-127-SSA1-2021, Tabla 5 (cumplimiento gradual para arsénico y cadmio)","page":null,"quote":"Mayor de 500,000 habitantes Un año posterior a la entrada en vigor de la presente Norma 0.01 0.003 mg/L"}},{"id":"14390f3bcaaf0852","parameter":"Arsénico","value":"0.01","value_num":0.01,"unit":"mg/L","direction":"max","kind":"limit","medium":"drinking_water","level":"national","parameter_key":"cas:7440-38-2","place":["MX"],"conditions":["NOTA 1 Los límites permisibles de metales y metaloides se refieren a su concentración total en el agua, la cual incluye los suspendidos y los disueltos.","localidad: Entre 50,000 y 499,999 habitantes","año: Tres años posterior a la entrada en vigor de la presente Norma","Esta Norma entrará en vigor a los 360 días naturales contados a partir del día siguiente de su publicación en el Diario Oficial de la Federación."],"cite":{"instrument":"mx_nom127_ssa1_2021","title":"NOM-127-SSA1-2021 — Agua para uso y consumo humano. Límites permisibles de la calidad del agua: Tablas 1 to 14 and Apéndice A Normativo, Tablas A.1 to A.3","issuer":"Secretaría de Salud (Comisión Federal para la Protección contra Riesgos Sanitarios), Estados Unidos Mexicanos","edition":"DOF 02/05/2022 (in force 360 natural days from the day after publication — 10. Vigencia; turbidity 3.0 UNT from the second year after entry into force — Tabla 1 note a; fluoride 1.0 mg/L, arsenic 0.01 mg/L and cadmium 0.003 mg/L one, three or six years after entry into force by locality size — Tablas 3 and 5; repeals the 2000 modification of NOM-127-SSA1-1994 — Transitorio Único)","source_url":"https://dof.gob.mx/nota_detalle.php?codigo=5650705&fecha=02/05/2022","source_sha256":"ccafe3317244274e237d8bfc92051f8396f8d3342782d37d7b4e954099889b46","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-16","status":"not verified"},"section":"NOM-127-SSA1-2021, Tabla 5 (cumplimiento gradual para arsénico y cadmio)","page":null,"quote":"Entre 50,000 y 499,999 habitantes Tres años posterior a la entrada en vigor de la presente Norma 0.01 0.003 mg/L"}},{"id":"07354790afd00806","parameter":"Arsénico","value":"0.01","value_num":0.01,"unit":"mg/L","direction":"max","kind":"limit","medium":"drinking_water","level":"national","parameter_key":"cas:7440-38-2","place":["MX"],"conditions":["NOTA 1 Los límites permisibles de metales y metaloides se refieren a su concentración total en el agua, la cual incluye los suspendidos y los disueltos.","localidad: Menor de 50,000 habitantes","año: Seis años posterior a la entrada en vigor de la presente Norma","Esta Norma entrará en vigor a los 360 días naturales contados a partir del día siguiente de su publicación en el Diario Oficial de la Federación."],"cite":{"instrument":"mx_nom127_ssa1_2021","title":"NOM-127-SSA1-2021 — Agua para uso y consumo humano. Límites permisibles de la calidad del agua: Tablas 1 to 14 and Apéndice A Normativo, Tablas A.1 to A.3","issuer":"Secretaría de Salud (Comisión Federal para la Protección contra Riesgos Sanitarios), Estados Unidos Mexicanos","edition":"DOF 02/05/2022 (in force 360 natural days from the day after publication — 10. Vigencia; turbidity 3.0 UNT from the second year after entry into force — Tabla 1 note a; fluoride 1.0 mg/L, arsenic 0.01 mg/L and cadmium 0.003 mg/L one, three or six years after entry into force by locality size — Tablas 3 and 5; repeals the 2000 modification of NOM-127-SSA1-1994 — Transitorio Único)","source_url":"https://dof.gob.mx/nota_detalle.php?codigo=5650705&fecha=02/05/2022","source_sha256":"ccafe3317244274e237d8bfc92051f8396f8d3342782d37d7b4e954099889b46","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-16","status":"not verified"},"section":"NOM-127-SSA1-2021, Tabla 5 (cumplimiento gradual para arsénico y cadmio)","page":null,"quote":"Menor de 50,000 habitantes Seis años posterior a la entrada en vigor de la presente Norma 0.01 0.003 mg/L"}},{"id":"3c8e72f40ae5911f","parameter":"Arsénico","value":"22","value_num":22,"unit":"mg/kg","direction":"max","kind":"guideline","medium":"soil","level":"national","parameter_key":"cas:7440-38-2","place":["MX"],"conditions":["uso de suelo: Uso agrícola/residencial /comercial (mg/kg)","NOTA: a. En caso de que se presenten diversos usos del suelo en un sitio, debe considerarse el uso que predomine. b. Cuando en los programas de ordenamiento ecológico y de desarrollo urbano no estén establecidos los usos del suelo, se usará el valor residencial.","1) Remediar hasta las concentraciones de referencia totales establecidas en la Tabla 1.","5.1.1. Cuando el suelo que se presume contaminado tiene una superficie menor o igual a 1 000 m 2 , el responsable procederá a remediar a las concentraciones de referencia totales (CR T ) señaladas en la Tabla 1 o a seguir cualquiera de las metodologías descritas en la presente Norma."],"cite":{"instrument":"mx_nom147_semarnat_ssa1_2004","title":"NOM-147-SEMARNAT/SSA1-2004 — criterios para determinar las concentraciones de remediación de suelos contaminados por arsénico, bario, berilio, cadmio, cromo hexavalente, mercurio, níquel, plata, plomo, selenio, talio y/o vanadio: Tabla 1 (CR T) and Tabla 2 (CR S)","issuer":"Secretaría de Medio Ambiente y Recursos Naturales and Secretaría de Salud, Estados Unidos Mexicanos","edition":"DOF 02/03/2007 (in force sixty natural days after publication — Transitorio Primero)","source_url":"https://dof.gob.mx/nota_detalle_popup.php?codigo=4964569","source_sha256":"90f1db381695867d8327ffa7cf74160031e0caf291db592a01c495816b91373a","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-16","status":"unchanged"},"section":"NOM-147-SEMARNAT/SSA1-2004, Tabla 1 (concentraciones de referencia totales, CR T, por tipo de uso de suelo)","page":null,"quote":"Arsénico 22 260"}},{"id":"58623c6d8d012c05","parameter":"Arsénico","value":"260","value_num":260,"unit":"mg/kg","direction":"max","kind":"guideline","medium":"soil","level":"national","parameter_key":"cas:7440-38-2","place":["MX"],"conditions":["uso de suelo: Uso industrial (mg/kg)","NOTA: a. En caso de que se presenten diversos usos del suelo en un sitio, debe considerarse el uso que predomine. b. Cuando en los programas de ordenamiento ecológico y de desarrollo urbano no estén establecidos los usos del suelo, se usará el valor residencial.","1) Remediar hasta las concentraciones de referencia totales establecidas en la Tabla 1.","5.1.1. Cuando el suelo que se presume contaminado tiene una superficie menor o igual a 1 000 m 2 , el responsable procederá a remediar a las concentraciones de referencia totales (CR T ) señaladas en la Tabla 1 o a seguir cualquiera de las metodologías descritas en la presente Norma."],"cite":{"instrument":"mx_nom147_semarnat_ssa1_2004","title":"NOM-147-SEMARNAT/SSA1-2004 — criterios para determinar las concentraciones de remediación de suelos contaminados por arsénico, bario, berilio, cadmio, cromo hexavalente, mercurio, níquel, plata, plomo, selenio, talio y/o vanadio: Tabla 1 (CR T) and Tabla 2 (CR S)","issuer":"Secretaría de Medio Ambiente y Recursos Naturales and Secretaría de Salud, Estados Unidos Mexicanos","edition":"DOF 02/03/2007 (in force sixty natural days after publication — Transitorio Primero)","source_url":"https://dof.gob.mx/nota_detalle_popup.php?codigo=4964569","source_sha256":"90f1db381695867d8327ffa7cf74160031e0caf291db592a01c495816b91373a","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-16","status":"unchanged"},"section":"NOM-147-SEMARNAT/SSA1-2004, Tabla 1 (concentraciones de referencia totales, CR T, por tipo de uso de suelo)","page":null,"quote":"Arsénico 22 260"}},{"id":"868df94de792b2a1","parameter":"Arsénico","value":"0,500","value_num":0.5,"unit":"mg/L","direction":"max","kind":"guideline","medium":"leachate","level":"national","parameter_key":"cas:7440-38-2","place":["MX"],"conditions":["4) Remediar hasta las concentraciones de referencia de la fracción soluble establecidas en la Tabla 2 más la fracción soluble de la muestra de fondo. Aplicable cuando no existe población humana potencialmente expuesta."],"cite":{"instrument":"mx_nom147_semarnat_ssa1_2004","title":"NOM-147-SEMARNAT/SSA1-2004 — criterios para determinar las concentraciones de remediación de suelos contaminados por arsénico, bario, berilio, cadmio, cromo hexavalente, mercurio, níquel, plata, plomo, selenio, talio y/o vanadio: Tabla 1 (CR T) and Tabla 2 (CR S)","issuer":"Secretaría de Medio Ambiente y Recursos Naturales and Secretaría de Salud, Estados Unidos Mexicanos","edition":"DOF 02/03/2007 (in force sixty natural days after publication — Transitorio Primero)","source_url":"https://dof.gob.mx/nota_detalle_popup.php?codigo=4964569","source_sha256":"90f1db381695867d8327ffa7cf74160031e0caf291db592a01c495816b91373a","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-16","status":"unchanged"},"section":"NOM-147-SEMARNAT/SSA1-2004, Tabla 2 (concentraciones de referencia de contaminantes solubles, CR S)","page":null,"quote":"Arsénico 0,500"}}],"next":[{"tool":"check_values","says":"Has your user measured this? check_values sets each of their results beside every row held here, with a verdict and the row's cite.","arguments":{"place":"MX"},"needs":{"rows":"Your user's measured results, as their table prints them: [{parameter: \"arsenic\", value, unit}, ...], any other parameters too."},"post":"/api/v1/check","url":"https://passage-data.com/api/v1/check","page":"https://passage-data.com/limits/MX/arsenic#check"},{"tool":"read_certificate","says":"Has your user a laboratory certificate? read_certificate reads every row it prints, each with its page, and checks them against these limits.","arguments":{"place":"MX"},"needs":{"content_base64":"The laboratory's certificate (PDF) or its XLSX, XLS or CSV export, as base64; or file_url, a public https address of it."},"post":"/api/v1/certificate","url":"https://passage-data.com/api/v1/certificate","page":"https://passage-data.com/limits/MX/arsenic#check"}]}