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Table 1 Household water type and source and number of NTM positive samples and species identified

From: Occurrence of potentially pathogenic nontuberculous mycobacteria in Mexican household potable water: a pilot study

Water type and source Household Sampling sites Number of samples collected Number of positive samples (%) (Number) NTM identified by 16S rRNA, hsp 65 and rpo B genes
Region
(see Figure1)
Groundwater      
Well 1 MHF* 16 4 (25) (3) M. mucogenicum, (1) M. gordonae
   KF** 16 4 (25) (4) M. mucogenicum
Well 5 MHF 14 4 (29) (3) M. porcinum, (1) Mycobacterium sp
   KF 14 0 (0)  
Surface water      
Cutzamala system 2 MHF 10 2 (20) (1) M. avium, (1) M. mucogenicum
   KF 10 0 (0)  
Cutzamala system 3 MHF 10 1 (10) (1) M. avium
   KF 10 1 (10) (1) M. cosmeticum
Magdalena River 4 MHF 10 1 (10) (1) M. fortuitum
   KF 10 2 (20) (1) M. avium, (1) M. mucogenicum
  1. * “main house faucet”.
  2. ** kitchen faucet.