Denominated

Location of zones

[Cl − (Na + K)]/Cl

Mg/Ca

Ca/Mg

Na/K

Ca + Mg

Na + K

Cl/Na

Chemical facies

PU1

MPAKA

−1.836

0.432

2.315

35.33

2.028

7.224

0.363

Chlorinated sodic and potassic

PU2

BISONGO

−1.686

1.024

0.977

16.22

0.458

0.961

0.395

Bicarbonated sodic and potassic

PU3

MBOTA CARLOS

−1.056

0.592

1.688

6.567

0.986

2.736

0.561

Chlorinated sodic and potassic

PU4

MBOTA COMAPONT

−1.062

0.257

3.894

22.72

1.058

4.539

0.506

Chlorinated sodic and potassic

PU5

TCHIBATI

−1.338

1.527

0.655

24.83

0.427

2.318

0.445

Chlorinated sodic and potassic

PU6

TCHINIAMBI

−1.25

0.922

1.085

22.95

0.752

1.797

0.464

Chlorinated sodic and potassic

PU7

Km⁸

−0.994

0.187

5.341

17.92

0.191

1.109

0.529

Chlorinated sodic and potassic

PU8

Amour du pays

−0.037

1.157

0.864

33.77

0.17

0.519

0.993

Chlorinated sodic and potassic

PU9

Hopital Loandjili

−2.401

3.707

0.27

16.92

0.229

0.47

0.311

Bicarbonated sodic and potassic

PU10

Aeroport AA Neto

−4.475

1.123

0.891

5.651

0.582

0.314

0.215

Bicarbonated calcic and magnesian

PU11

Quartier Loussala

−1.407

0.719

1.391

7.32

0.255

0.746

0.472

Bicarbonated sodic and potassic

PU12

Siafoumou

−1.882

0.676

1.48

18.34

0.401

2.127

0.366

Chlorinated sodic and potassic

PU13

Ngoyo

−0.014

0.863

1.159

19.13

0.604

0.206

1.038

Bicarbonated calcic and magnesian

PU14

Kouikou

−0.445

0.663

1.508

31.23

0.127

0.151

0.714

Chlorinated sodic and potassium

PU15

Km⁴

−0.53

1.216

0.823

12.16

1.08

0.224

0.707

Bicarbonated calcic and magnesian

PU16

TiéTié

−1.129

0.014

73.54

37,92

0.613

2.688

0.482

Chlorinated sodic and potassic

PU17

Voungou

−2.038

0.24

4.172

25.43

1.305

3.042

0.342

Chlorinated sodic and potassic

PU18

Mongo Mpoukou

−0.661

0.609

1.643

25.79

0.088

0.151

0.625

Chlorinated sodic and potassic