| antarctica | | nitrospira sp. | species | 2 | 0 |
| armenia | | leptospirillum ferriphilum | species | 1 | 0 |
| armenia | | leptospirillum ferrodiazotrophum | species | 1 | 0 |
| armenia | | leptospirillum ferrooxidans | species | 2 | 0 |
| armenia | | nitrospira sp. enrichment culture clone jac14 | species | 1 | 0 |
| armenia | | nitrospira sp. enrichment culture clone jac29 | species | 1 | 0 |
| armenia | | nitrospira sp. enrichment culture clone jac35 | species | 1 | 0 |
| australia | | leptospirillum ferriphilum | species | 1 | 0 |
| australia | | leptospirillum sp. dsm 9468 | species | 1 | 0 |
| australia | | uncultured nitrospira sp. | species | 4 | 0 |
| australia | new south wales | uncultured nitrospira sp. | species | 10 | 0 |
| australia | new south wales | uncultured nitrospiraceae bacterium | species | 1 | 0 |
| australia | queensland | nitrospira sp. | species | 1 | 0 |
| australia | queensland | uncultured nitrospira sp. | species | 7 | 0 |
| australia | south australia | nitrospira | genus | 0 | 1 |
| austria | | uncultured nitrospira sp. | species | 76 | 0 |
| austria | lower austria | uncultured nitrospira sp. | species | 6 | 0 |
| austria | vienna | uncultured nitrospira sp. | species | 18 | 0 |
| bahamas | | uncultured nitrospira sp. | species | 5 | 0 |
| belize | | uncultured thermodesulfovibrio sp. | species | 3 | 0 |
| bosnia and herzegovina | | nitrospiraceae bacterium vj1_h4 | species | 3 | 0 |
| botswana | | uncultured nitrospiraceae bacterium | species | 1 | 0 |
| brazil | | uncultured nitrospira sp. | species | 5 | 0 |
| brazil | parana | uncultured nitrospira sp. | species | 4 | 0 |
| brazil | sao paulo | uncultured nitrospira sp. | species | 10 | 0 |
| bulgaria | | leptospirillum sp. dsm 2391 | species | 2 | 0 |
| canada | | uncultured nitrospira sp. | species | 1 | 0 |
| canada | british columbia | nitrospira | genus | 0 | 1 |
| canada | nunavut | uncultured nitrospira sp. | species | 1 | 0 |
| canada | quebec | uncultured nitrospira sp. | species | 1 | 0 |
| chile | | leptospirillum ferriphilum | species | 151 | 0 |
| chile | | leptospirillum ferrooxidans | species | 1 | 0 |
| chile | | leptospirillum sp. la | species | 2 | 0 |
| chile | | uncultured leptospirillum sp. | species | 2 | 0 |
| chile | | uncultured nitrospira sp. | species | 1 | 0 |
| chile | | uncultured nitrospiraceae bacterium | species | 1 | 0 |
| china | | leptospirillum ferriphilum | species | 4 | 0 |
| china | | leptospirillum ferrooxidans | species | 3 | 0 |
| china | | leptospirillum sp. yqp-1 | species | 1 | 0 |
| china | | nitrospira sp. | species | 10 | 0 |
| china | | nitrospira sp. enrichment culture | species | 54 | 0 |
| china | | nitrospira sp. enrichment culture clone rtc21 | species | 1 | 0 |
| china | | nitrospira sp. enrichment culture clone rtc3 | species | 1 | 0 |
| china | | thermodesulfovibrio sp. enrichment culture | species | 7 | 0 |
| china | | thermodesulfovibrio sp. enrichment culture clone ad_hyda_3 | species | 1 | 0 |
| china | | thermodesulfovibrio yellowstonii | species | 5 | 0 |
| china | | uncultured leptospirillum sp. | species | 3 | 0 |
| china | | uncultured magnetobacterium sp. | species | 1 | 0 |
| china | | uncultured nitrospira sp. | species | 1917 | 0 |
| china | | uncultured nitrospiraceae bacterium | species | 6 | 0 |
| china | | uncultured thermodesulfovibrio sp. | species | 23 | 0 |
| china | anhui | uncultured nitrospira sp. | species | 5 | 0 |
| china | beijing | candidatus magnetobacterium | genus | 0 | 3 |
| china | beijing | candidatus magnetobacterium casensis | species | 143 | 0 |
| china | beijing | nitrospira | genus | 0 | 2 |
| china | beijing | uncultured nitrospira sp. | species | 22 | 0 |
| china | fujian | leptospirillum ferriphilum | species | 210 | 0 |
| china | fujian | uncultured leptospirillum sp. | species | 6 | 0 |
| china | gansu | uncultured nitrospira sp. | species | 1 | 0 |
| china | guangdong | leptospirillum | genus | 0 | 2 |
| china | guangdong | leptospirillum ferriphilum | species | 3 | 0 |
| china | guangdong | leptospirillum ferrooxidans | species | 0 | 1 |
| china | guangdong | nitrospira | genus | 0 | 3 |
| china | guangdong | nitrospira sp. | species | 9 | 0 |
| china | guangdong | uncultured nitrospira sp. | species | 14 | 0 |
| china | hebei | leptospirillum sp. yqp-1 | species | 174 | 0 |
| china | hubei | uncultured leptospirillum sp. | species | 2 | 0 |
| china | hunan | uncultured leptospirillum sp. | species | 28 | 0 |
| china | hunan | uncultured nitrospira sp. | species | 25 | 0 |
| china | hunan | uncultured thermodesulfovibrio sp. | species | 2 | 0 |
| china | jiangsu | nitrospira sp. | species | 2 | 0 |
| china | jiangsu | uncultured nitrospira sp. | species | 5 | 0 |
| china | jiangsu | uncultured nitrospiraceae bacterium | species | 1 | 0 |
| china | jiangxi | leptospirillum | genus | 0 | 2 |
| china | jiangxi | leptospirillum ferriphilum | species | 62 | 1 |
| china | jiangxi | leptospirillum ferriphilum ysk | no rank | 2 | 0 |
| china | jiangxi | leptospirillum ferrooxidans | species | 1 | 1 |
| china | jiangxi | leptospirillum sp. enrichment culture clone 2131 | species | 1 | 0 |
| china | jiangxi | nitrospira | genus | 0 | 3 |
| china | jiangxi | uncultured nitrospira sp. | species | 3 | 0 |
| china | shandong | nitrospira | genus | 0 | 1 |
| china | shandong | uncultured nitrospira sp. | species | 2 | 0 |
| china | shanghai shi | nitrospira defluvii | species | 2 | 0 |
| china | shanxi | leptospirillum | genus | 0 | 1 |
| china | shanxi | leptospirillum ferriphilum | species | 0 | 1 |
| china | shanxi | leptospirillum ferrooxidans | species | 0 | 1 |
| china | shanxi | nitrospira | genus | 0 | 1 |
| china | sichuan | uncultured nitrospira sp. | species | 5 | 0 |
| china | tibet | nitrospira sp. | species | 4 | 0 |
| china | xinjiang | uncultured nitrospira sp. | species | 3 | 0 |
| china | yunnan | leptospirillum | genus | 0 | 1 |
| china | yunnan | nitrospira sp. | species | 7 | 0 |
| china | yunnan | uncultured nitrospira sp. | species | 69 | 0 |
| china | zhejiang | uncultured nitrospira sp. | species | 3 | 0 |
| cyprus | | uncultured leptospirillum sp. | species | 25 | 0 |
| czech republic | | uncultured nitrospira sp. | species | 4 | 0 |
| denmark | | nitrospira sp. | species | 822 | 0 |
| denmark | region of southern denmark | nitrospira sp. | species | 2 | 0 |
| ethiopia | | uncultured nitrospira sp. | species | 1 | 0 |
| finland | | leptospirillum ferriphilum | species | 2 | 0 |
| finland | | uncultured magnetobacterium sp. | species | 1 | 0 |
| finland | | uncultured nitrospira sp. | species | 5 | 0 |
| france | ile-de-france region | nitrospira | genus | 0 | 1 |
| germany | | candidatus magnetobacterium bavaricum | species | 2 | 0 |
| germany | | leptospirillum sp. | species | 1 | 0 |
| germany | | nitrospira sp. enrichment culture clone 1 | species | 1 | 0 |
| germany | | nitrospira sp. enrichment culture clone lua16 | species | 1 | 0 |
| germany | | uncultured leptospirillum sp. | species | 1 | 0 |
| germany | | uncultured nitrospira sp. | species | 64 | 0 |
| germany | baden-wuerttemberg | nitrospira sp. | species | 3 | 0 |
| germany | bavaria | candidatus magnetobacterium bavaricum | species | 2752 | 0 |
| germany | bavaria | candidatus magnetoovum chiemensis | species | 1020 | 0 |
| germany | bavaria | uncultured nitrospira sp. | species | 1 | 0 |
| germany | berlin | uncultured nitrospira sp. | species | 2 | 0 |
| germany | berlin | uncultured thermodesulfovibrio sp. | species | 2 | 0 |
| germany | hamburg | nitrospira sp. enrichment culture clone 43 | species | 1 | 0 |
| germany | hamburg | nitrospira sp. enrichment culture clone 44 | species | 1 | 0 |
| germany | lower saxony | nitrospira sp. | species | 11 | 0 |
| germany | lower saxony | uncultured nitrospira sp. | species | 1 | 0 |
| germany | saxony | leptospirillum ferrooxidans | species | 2 | 0 |
| germany | saxony | leptospirillum sp. tzt-jg-24 | species | 1 | 0 |
| germany | saxony | leptospirillum sp. tzt-jg-3 | species | 1 | 0 |
| germany | saxony | leptospirillum sp. tzt-jg-7 | species | 1 | 0 |
| germany | saxony | uncultured nitrospira sp. | species | 5 | 0 |
| germany | schleswig-holstein | uncultured nitrospira sp. | species | 22 | 0 |
| greenland | | nitrospiraceae bacterium | species | 1 | 0 |
| hong kong | | nitrospira sp. | species | 12 | 0 |
| hong kong | | nitrospiraceae bacterium | species | 1 | 0 |
| hungary | | uncultured nitrospira sp. | species | 11 | 0 |
| iceland | | thermodesulfovibrio islandicus dsm 12570 | no rank | 20 | 0 |
| iceland | | uncultured thermodesulfovibrio sp. | species | 1 | 0 |
| india | | candidatus magnetobacterium bavaricum | species | 1 | 0 |
| india | | leptospirillum ferriphilum | species | 1 | 0 |
| india | | leptospirillum ferrooxidans | species | 1 | 0 |
| india | | nitrospira sp. | species | 2 | 0 |
| india | | thermodesulfovibrio sp. terisrb1003 | species | 1 | 0 |
| india | | uncultured nitrospira sp. | species | 34 | 0 |
| india | himachal pradesh | nitrospira sp. | species | 1 | 0 |
| india | jharkhand | uncultured thermodesulfovibrio sp. | species | 1 | 0 |
| india | madhya pradesh | uncultured nitrospira sp. | species | 1 | 0 |
| india | uttar pradesh | uncultured nitrospira sp. | species | 4 | 0 |
| india | uttar pradesh | uncultured nitrospiraceae bacterium | species | 1 | 0 |
| india | west bengal | uncultured nitrospira sp. | species | 1 | 0 |
| iran | | leptospirillum sp. utmc 2299 | species | 1 | 0 |
| israel | southern district | uncultured nitrospira sp. | species | 1 | 0 |
| israel | southern district | uncultured nitrospiraceae bacterium | species | 1 | 0 |
| italy | | uncultured nitrospira sp. | species | 4 | 0 |
| italy | | uncultured nitrospiraceae bacterium | species | 1 | 0 |
| italy | liguria region | nitrospiraceae bacterium uba665 | species | 1 | 0 |
| japan | | nitrospira sp. enrichment culture | species | 1 | 0 |
| japan | | thermodesulfovibrio aggregans | species | 3 | 0 |
| japan | | thermodesulfovibrio thiophilus dsm 17215 | no rank | 18 | 0 |
| japan | | uncultured nitrospira sp. | species | 49 | 0 |
| japan | aichi prefecture | uncultured nitrospira sp. | species | 2 | 0 |
| japan | ehime prefecture | uncultured nitrospira sp. | species | 2 | 0 |
| japan | hokkaido prefecture | uncultured magnetobacterium sp. | species | 1 | 0 |
| japan | hokkaido prefecture | uncultured nitrospira sp. | species | 4 | 0 |
| japan | hokkaido prefecture | uncultured thermodesulfovibrio sp. | species | 2 | 0 |
| japan | kagoshima prefecture | uncultured nitrospira sp. | species | 1 | 0 |
| japan | kanagawa prefecture | uncultured nitrospira sp. | species | 3 | 0 |
| japan | kyoto prefecture | uncultured nitrospira sp. | species | 5 | 0 |
| japan | mie prefecture | uncultured nitrospira sp. | species | 1 | 0 |
| japan | niigata prefecture | uncultured nitrospira sp. | species | 4 | 0 |
| japan | shiga prefecture | uncultured nitrospira sp. | species | 1 | 0 |
| japan | shizuoka prefecture | uncultured magnetobacterium sp. | species | 3 | 0 |
| japan | shizuoka prefecture | uncultured thermodesulfovibrio sp. | species | 1 | 0 |
| japan | tochigi prefecture | uncultured nitrospira sp. | species | 3 | 0 |
| japan | tokyo prefecture | nitrospira sp. nd1 | species | 1 | 0 |
| luxembourg | | nitrospira sp. uba4129 | species | 1 | 0 |
| luxembourg | | nitrospira sp. uba7240 | species | 1 | 0 |
| mexico | | uncultured leptospirillum sp. | species | 9 | 0 |
| mexico | | uncultured nitrospira sp. | species | 3 | 0 |
| mexico | | uncultured thermodesulfovibrio sp. | species | 1 | 0 |
| mexico | michoacan ocampo | uncultured leptospirillum sp. | species | 1 | 0 |
| mexico | quintana roo | uncultured nitrospira sp. | species | 1 | 0 |
| mexico | tamaulipas | uncultured thermodesulfovibrio sp. | species | 26 | 0 |
| mongolia | dornogovi province | nitrospira | genus | 0 | 1 |
| mongolia | khovsgol province | nitrospira | genus | 0 | 1 |
| namibia | | nitrospira sp. enrichment culture clone 74 | species | 1 | 0 |
| namibia | | nitrospira sp. enrichment culture clone 80 | species | 1 | 0 |
| namibia | | uncultured nitrospira sp. | species | 22 | 0 |
| netherlands | | candidatus nitrospira salsa | species | 1 | 0 |
| netherlands | | nitrospira sp. | species | 83 | 0 |
| netherlands | | nitrospiraceae bacterium | species | 1 | 0 |
| netherlands | | uncultured nitrospira sp. | species | 14 | 0 |
| netherlands | gelderland province | nitrospira sp. olb3 | species | 80 | 0 |
| new zealand | canterbury | nitrospira sp. | species | 3 | 0 |
| new zealand | canterbury | nitrospiraceae bacterium | species | 1 | 0 |
| nigeria | | uncultured nitrospira sp. | species | 2 | 0 |
| norway | | uncultured nitrospira sp. | species | 4 | 0 |
| peru | | leptospirillum ferriphilum | species | 43 | 0 |
| peru | | leptospirillum ferrooxidans | species | 1 | 0 |
| peru | cajamarca region | leptospirillum ferrooxidans | species | 3 | 0 |
| portugal | porto district | uncultured nitrospira sp. | species | 3 | 0 |
| romania | | leptospirillum ferrooxidans | species | 1 | 0 |
| romania | | nitrospira sp. enrichment culture clone i3 | species | 1 | 0 |
| romania | constanta county | nitrospira sp. | species | 1 | 0 |
| romania | constanta county | nitrospiraceae bacterium | species | 1 | 0 |
| russia | | leptospirillum ferriphilum | species | 3 | 0 |
| russia | | leptospirillum sp. ol10-02 | species | 1 | 0 |
| russia | | nitrospira sp. enrichment culture clone 3301 | species | 1 | 0 |
| russia | | nitrospira sp. enrichment culture clone 3304 | species | 1 | 0 |
| russia | | nitrospira sp. enrichment culture clone 3305 | species | 1 | 0 |
| russia | | nitrospira sp. enrichment culture clone 3309 | species | 1 | 0 |
| russia | | nitrospira sp. enrichment culture clone ld3 | species | 1 | 0 |
| russia | | nitrospira sp. enrichment culture clone ld5 | species | 1 | 0 |
| russia | irkutsk oblast | nitrospiraceae bacterium | species | 2 | 0 |
| russia | kamchatka krai | thermodesulfovibrio aggregans | species | 62 | 0 |
| russia | kostroma oblast | uncultured nitrospira sp. | species | 2 | 0 |
| russia | moscow city | candidatus nitrospira bockiana | species | 4 | 0 |
| russia | moscow city | nitrospira | genus | 0 | 2 |
| russia | moscow city | nitrospira moscoviensis | species | 34 | 0 |
| russia | moscow city | uncultured nitrospira sp. | species | 1 | 0 |
| russia | moscow oblast | nitrospira | genus | 0 | 2 |
| russia | tomsk oblast | thermodesulfovibrio sp. n1 | species | 234 | 0 |
| russia | zabaykalsky krai | uncultured leptospirillum sp. | species | 3 | 0 |
| singapore | | nitrospira sp. uba2082 | species | 1 | 0 |
| singapore | | nitrospira sp. uba2083 | species | 1 | 0 |
| singapore | | nitrospira sp. uba5698 | species | 1 | 0 |
| singapore | | nitrospira sp. uba5699 | species | 1 | 0 |
| singapore | | nitrospira sp. uba5702 | species | 1 | 0 |
| south africa | | leptospirillum ferriphilum | species | 1 | 0 |
| south africa | | nitrospira sp. enrichment culture clone 83 | species | 1 | 0 |
| south africa | | uncultured nitrospira sp. | species | 12 | 0 |
| spain | | leptospirillum ferrooxidans | species | 105 | 0 |
| spain | | uncultured leptospirillum sp. | species | 1 | 0 |
| spain | | uncultured nitrospira sp. | species | 4 | 0 |
| spain | | uncultured thermodesulfovibrio sp. | species | 1 | 0 |
| spain | andalusia | leptospirillum | genus | 0 | 1 |
| spain | andalusia | nitrospira | genus | 0 | 1 |
| spain | balearic islands | uncultured nitrospira sp. | species | 1 | 0 |
| svalbard and jan mayen | svalbard | nitrospira | genus | 0 | 1 |
| sweden | | uncultured nitrospira sp. | species | 2 | 0 |
| sweden | | uncultured nitrospiraceae bacterium | species | 2 | 0 |
| switzerland | | uncultured nitrospira sp. | species | 14 | 0 |
| taiwan | | candidatus magnetobacterium | genus | 0 | 1 |
| taiwan | | uncultured nitrospira sp. | species | 22 | 0 |
| taiwan | taiwan municipality | uncultured nitrospira sp. | species | 20 | 0 |
| tanzania | kigoma region | nitrospira sp. | species | 5 | 0 |
| thailand | | uncultured nitrospira sp. | species | 1 | 0 |
| thailand | bangkok | uncultured nitrospira sp. | species | 1 | 0 |
| turkey | | leptospirillum ferrooxidans | species | 2 | 0 |
| turkey | | uncultured leptospirillum sp. | species | 15 | 0 |
| united kingdom | | leptospirillum ferriphilum | species | 1 | 0 |
| united kingdom | | leptospirillum ferrooxidans | species | 4 | 0 |
| united kingdom | | uncultured leptospirillum sp. | species | 5 | 0 |
| united kingdom | | uncultured nitrospira sp. | species | 7 | 0 |
| united kingdom | england | uncultured nitrospiraceae bacterium | species | 2 | 0 |
| united kingdom | scotland | nitrospira | genus | 0 | 1 |
| united kingdom | wales | leptospirillum | genus | 0 | 1 |
| united kingdom | wales | leptospirillum sp. | species | 1 | 0 |
| united states | | leptospirillum ferrooxidans | species | 1 | 0 |
| united states | | nitrospira marina | species | 6 | 0 |
| united states | | nitrospira sp. | species | 1792 | 0 |
| united states | | nitrospira sp. enrichment culture | species | 1 | 0 |
| united states | | uncultured nitrospira sp. | species | 263 | 0 |
| united states | | uncultured nitrospiraceae bacterium | species | 1 | 0 |
| united states | arizona | uncultured leptospirillum sp. | species | 3 | 0 |
| united states | arizona | uncultured nitrospira sp. | species | 1 | 0 |
| united states | california | leptospirillum | genus | 0 | 4 |
| united states | california | leptospirillum ferriphilum | species | 1 | 0 |
| united states | california | leptospirillum ferrodiazotrophum | species | 182 | 0 |
| united states | california | leptospirillum rubarum | species | 95 | 0 |
| united states | california | leptospirillum sp. group ii '5-way cg' | species | 17 | 0 |
| united states | california | leptospirillum sp. group ii 'cf-1' | species | 2 | 0 |
| united states | california | leptospirillum sp. group iii | species group | 1336 | 0 |
| united states | california | leptospirillum sp. group iv 'uba bs' | species | 986 | 0 |
| united states | california | nitrospira | genus | 0 | 1 |
| united states | california | nitrospira defluvii | species | 1 | 0 |
| united states | california | thermodesulfovibrio aggregans | species | 1 | 0 |
| united states | california | uncultured leptospirillum sp. | species | 1 | 0 |
| united states | colorado | nitrospira sp. | species | 77 | 0 |
| united states | colorado | thermodesulfovibrio sp. rbg_19ft_combo_41_18 | species | 119 | 0 |
| united states | colorado | thermodesulfovibrio sp. rbg_19ft_combo_42_12 | species | 261 | 0 |
| united states | colorado | uncultured nitrospiraceae bacterium | species | 2 | 0 |
| united states | colorado | uncultured thermodesulfovibrio sp. | species | 1 | 0 |
| united states | florida | uncultured nitrospira sp. | species | 6 | 0 |
| united states | georgia | uncultured nitrospira sp. | species | 28 | 0 |
| united states | georgia | uncultured nitrospiraceae bacterium | species | 5 | 0 |
| united states | kansas | uncultured nitrospira sp. | species | 6 | 0 |
| united states | kansas | uncultured nitrospiraceae bacterium | species | 1 | 0 |
| united states | maine | nitrospira sp. scgc ag-212-e16 | species | 163 | 0 |
| united states | massachusetts | nitrospiraceae bacterium | species | 2 | 0 |
| united states | massachusetts | uncultured magnetobacterium sp. | species | 1 | 0 |
| united states | massachusetts | uncultured nitrospira sp. | species | 11 | 0 |
| united states | massachusetts | uncultured nitrospiraceae bacterium | species | 11 | 0 |
| united states | michigan | nitrospira sp. | species | 4 | 0 |
| united states | michigan | uncultured nitrospira sp. | species | 16 | 0 |
| united states | michigan | uncultured nitrospiraceae bacterium | species | 4 | 0 |
| united states | nevada | candidatus magnetobacterium | genus | 0 | 1 |
| united states | nevada | candidatus magnetoovum mohavensis | species | 1 | 0 |
| united states | north carolina | nitrospira sp. | species | 3 | 0 |
| united states | north dakota | nitrospiraceae bacterium | species | 1268 | 0 |
| united states | pennsylvania | nitrospira | genus | 0 | 1 |
| united states | pennsylvania | nitrospira sp. | species | 3 | 0 |
| united states | texas | uncultured nitrospira sp. | species | 1 | 0 |
| united states | utah | nitrospiraceae bacterium uba1546 | species | 1 | 0 |
| united states | utah | uncultured nitrospira sp. | species | 7 | 0 |
| united states | virginia | leptospirillum | genus | 0 | 2 |
| united states | virginia | nitrospira sp. | species | 9 | 0 |
| united states | virginia | nitrospiraceae bacterium | species | 2 | 0 |
| united states | wisconsin | nitrospira sp. uw-ldo-01 | species | 231 | 0 |
| united states | wisconsin | nitrospira sp. uw-ldo-02 | species | 523 | 0 |
| united states | wisconsin | uncultured nitrospira sp. | species | 19 | 0 |
| united states | wyoming | thermodesulfovibrio | genus | 0 | 2 |
| united states | wyoming | uncultured nitrospira sp. | species | 1 | 0 |
| zimbabwe | | leptospirillum ferriphilum | species | 1 | 0 |
| zimbabwe | | leptospirillum sp. bgr 44 | species | 1 | 0 |