{"query":{"parameter":"lead","place":"MX","medium":null,"statistic":null,"kind":null},"searched":{"places":["MX"],"parameter_keys":["cas:7439-92-1","cas:301-04-2","name:arsenic, cadmium (h), copper (h), lead (h), mercury, zinc","name:arsenic, cadmium (h), copper (h), lead (h), zinc","name:cadmium (h), copper (h), mercury, lead (h), zinc","name:lead-210","cas:1335-32-6","cas:7446-27-7","name:lead - total","name:lead, total","name:total lead","name:lead, total recoverable","cas:78-00-2","cas:75-74-1","cas:1067-14-7","name:plomb-210","name:plomb extractible"],"names_matched":[["lead","cas:7439-92-1"],["acetic acid lead 2 salt","cas:301-04-2"],["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"],["cadmium h copper h mercury lead h zinc","name:cadmium (h), copper (h), mercury, lead (h), zinc"],["cadmium h copper h mercury lead h zinc h","name:cadmium (h), copper (h), mercury, lead (h), zinc"],["lead 210","name:lead-210"],["lead 210 in equilibrium with 210bi and 210po","name:lead-210"],["lead acetate","cas:1335-32-6"],["lead acetate","cas:301-04-2"],["lead ii acetate","cas:301-04-2"],["lead ii phosphate","cas:7446-27-7"],["lead phosphate","cas:7446-27-7"],["lead subacetate","cas:1335-32-6"],["lead total","name:lead - total"],["lead total","name:lead, total"],["lead total","name:total lead"],["lead total recoverable","name:lead, total recoverable"],["tetraethyl lead","cas:78-00-2"],["tetramethyl lead","cas:75-74-1"],["total lead","name:lead - total"],["total lead","name:lead, total"],["total lead","name:total lead"],["total lead freshwater","name:total lead"],["total lead marine","name:total lead"],["total recoverable lead","name:lead, total recoverable"],["triethyl lead","cas:1067-14-7"],["plomb 210","name:plomb-210","plomb"],["plomb extractible","name:plomb extractible","plomb"]],"match":"exact+contains","order":"The place's own instruments first, then each place above it, each in its register's order"},"total":23,"offset":0,"returned":23,"next_offset":null,"rows":[{"id":"58134d704b827174","parameter":"Plomo","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:7439-92-1","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":"Plomo 0,2 0,3 0,4 0,2 0,3 0,4 0,5 0,75 1 0,5 0,75 1 0,2 0,3 0,4 0,2 0,3 0,4"}},{"id":"18909f024b5174fe","parameter":"Plomo","value":"0,3","value_num":0.3,"unit":"mg/L","statistic":"daily_avg","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7439-92-1","place":["MX"],"conditions":["route is direct","receiving_water is freshwater","cuerpo receptor: Embalses, lagos y lagunas"],"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":"Plomo 0,2 0,3 0,4 0,2 0,3 0,4 0,5 0,75 1 0,5 0,75 1 0,2 0,3 0,4 0,2 0,3 0,4"}},{"id":"3c43250f541d4085","parameter":"Plomo","value":"0,3","value_num":0.3,"unit":"mg/L","statistic":"daily_avg","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:7439-92-1","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; 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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":"Plomo 0,2 0,3 0,4 0,2 0,3 0,4 0,5 0,75 1 0,5 0,75 1 0,2 0,3 0,4 0,2 0,3 0,4"}},{"id":"b25fc70a1b14693c","parameter":"Plomo (Pb)","value":"0.50","value_num":0.5,"unit":"µg/m³","statistic":"annual_avg","direction":"max","kind":"limit","medium":"ambient_air","level":"national","parameter_key":"cas:7439-92-1","place":["MX"],"conditions":["forma de cálculo: Obtenido a partir de la fracción PM 10 por el método gravimétrico a condiciones locales y calculado como se especifica en el inciso 5.2","Un sitio de muestreo cumple con el valor límite de plomo cuando el promedio aritmético anual sea menor o igual a 0.50 µg/m 3 ."],"cite":{"instrument":"mx_nom026_ssa1_2021","title":"NOM-026-SSA1-2021 — Salud ambiental. 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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":"Plomo 0.01 mg/L"}},{"id":"128a4b3c928ac91c","parameter":"Plomo","value":"400","value_num":400,"unit":"mg/kg","direction":"max","kind":"guideline","medium":"soil","level":"national","parameter_key":"cas:7439-92-1","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":"Plomo 400 800"}},{"id":"58c3d9d4edc3a927","parameter":"Plomo","value":"800","value_num":800,"unit":"mg/kg","direction":"max","kind":"guideline","medium":"soil","level":"national","parameter_key":"cas:7439-92-1","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":"Plomo 400 800"}},{"id":"05838e8abf3b9483","parameter":"Plomo","value":"0,500","value_num":0.5,"unit":"mg/L","direction":"max","kind":"guideline","medium":"leachate","level":"national","parameter_key":"cas:7439-92-1","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":"Plomo 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: \"lead\", 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/lead#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/lead#check"}]}