S. No. Location of HCH Dumpsite Conc. of HCH Bacterial Strains isolated from the dumpsites Reference
1 Rio de Janeiro, Brazil, 530 mg/ kg (b-HCH) Acinetobacter lwoffii [20]
140 mg/ kg (a-HCH) Burkholderia cepacia
7.3 mg/ kg (d- HCH) Chromobacterium violaceum
6.2 mg/ kg (g-HCH) Comamonas testosterone
  Pseudomonas chlororaphis
  P. stutzeri
  Stenotrophomonas maltophilia
  Kurthia sp.
  Micrococcus halobius
  Micrococcus sp.
2 The Netherlands <1 mg/ kg   [21,22]
3 Muggenburger Strasse, Germany 18200 mg/ kg Sphingomonas sp. DS2 [23,24]
Kirchsteinbek, Germany   Sphingomonas sp. DS2-2
  3.8 mg/kg Sphingomonas sp. DS3-1
4 Spain >5000 mg/kg Sphingomonas sp. a1-2 [25,26]
Sphingomonas sp.  a 4-2
Sphingomonas sp.  a 4-5
Sphingomonas sp.  a 16-10
Sphingomonas sp.  a 12-7
Sphingomonas sp.  a 16-1
Sphingomonas sp.  a 16-9
5 China 0.005 mg/kg of soil Sphingobium sp. MI1205 [13,27]
6 The United States ~5000 mg/kg - [28]
7 India 450 mg/g of soil Sphingobium ummariense RL3 [29-35]
Flavobacterium lindanitolerans sp.
Sphingobium lactosutens DS20
Novosphingobium lindaniclasticum LE124
Parapedobacter indicus RK1
Sphingobium chinhatense IP26
8 Czech Republic Data not available Sphingobium baderi LL03 [36]
Table 2: HCH dumpsites in the world and the bacterial strains isolated from different HCH dumpsites.