Table 1 Localities of Basaltic aquifers

Louvat & Allegre, 1997

La Reunion

thermomineral spring

48-29.5

6.2–6.7

Louvat & Allegre, 1998

Sao Miguel

thermal spring

26

6.5

Benedetti et al., 1994

Parana Traps

spring and drill hole

-

6.6–8.7

Stefansson et al., 2001

Islanda Laxa ́ in Kjo ́ s catchment area

spring and drill hole

18-24.8

7.3–8.4

Riotte et al., 2003

Camerun- Mount Cameroon

spring

16.3–23.5

6.4–8.1

Liotta et al., 2016

Etna

spring and groundwater

10.9–19.4

6.0-7.5

Gastmans et al., 2016

Serra Geral Aquifer, São Paulo state (Brazil)

groundwater

23.5–34.7

5.7–9.9

Kamble et al., 2013

Deccan Volcanic Province (southern margin)

groundwater and well

-

7.2–8.3

Fenta et al., 2020

Northwest Ethiopia

Borehole, Shallow well, Spring

-

6.6–8.1

Tweed et al., 2006/2004

Dandenong Ranges, southeast Australia

groundwaters and boreholes

-

6.1–8.6

Raiber et al., 2009

basalt plains of southeastern Australia

boreholes

-

-

Dafny et al., 2006

Golan Heights (Israel)

groundwater, well and spring

15-23.1

6.5–8.4

Prada et al., 2005

Madeira

spring and tunnel in perched acquifer

10.1–19.7

6.1–8.4

Duckett et al., 2019/2020

Columbia River (pay Grande Ronda Well

well

12.1–17.2

7.4-8.0

Liu et al., 2015

Columbia River Basalts

well

10.9–28.6

7.7–8.8

Siebert et al., 2014

Yarmuck Gorge & Golan Heights

well

19.1–24.3

8.3–9.07

Koh et al., 2009

Jeju Island, South Korea

spring and well

8.6–20.3

6.6–8.2

Flaathen et al. 2009

Mount Hekla, Iceland

groundwater, well, spring, cold spring

1.9-8.0

7.2–9.2

Cruz et al., 2009

Cruz et al., 2009

groundwater, well, spring, cold spring

14.3–18.3

7.01–7.63

Cordeiro et al., 2012

Sao Miguel, Azores

groundwater, well and spring

12.1–17.7

6.5–7.6

Ludwig et al., 2012

Mt. Wasserkuppe, Germany

groundwater and spring

6.1–11.8

6.6–9.7