Neve

Water quality

Nature of Rovaniemi provides us clean tap water. We use only ground water filtered through the soil and bedrock. Ground water is pumped up to ten meters from the ground. Water quality is so good that tap water is not treated at all, or it's treated only a little. We don't add any chemicals to the tap water in city area of Rovaniemi. The correct acidity (pH) of the water is ensured by conducting water through the limestone filter. The growth of bacteria is prevented by ultraviolet light treatment.

Summary table of the continuous monitoring parameters in the city area of Rovaniemi between 2015 - 2017 and the limit values of the drinking water regulation.

Parameter

Results 2015

Results 2016

Results 2017

Drinking water regulation 1352/2015

Coliform bacteria 37°C CFU/100ml

0

0

0

0

E. coli CFU/100ml

0

0

0

0

Manganese µg/l

0,6

0,27

0,54

50

pH

7,5

7,5

7,44

6,5-9,5

Iron µg/l

6,9

3

2,84

200

Odor

Odorles

Odorles

Odorles

Not unusual changes

Taste

No changes

No changes

No changes

Not unusual changes

Opacity FTU

0,11

0,17

0,16

Not unusual changes

Colour mg Pt/l

<5

<5

<5

Not unusual changes

Electrical conductivity μS/cm

128,5

116

117

<2500

Ammonium mg/l

<0,01

<0,01

0,010

0,5

Summary table of the periodic monitoring parameters in the city area of Rovaniemi between 2015 - 2017 and the limit values of the drinking water regulation.

Parameter

Results 2015

Results 2016

Results 2017

Drinking water regulation 1352/2015

Enterococci CFU/100ml

0

0

0

0

Number of colonies 22°C 72h CFU/ml

4,2

2,5

5

Not unusual changes

Chloride mg/l

1,2

0,88

1,03

250

Nitrate mg/l

0,43

0,33

0,40

50

Nitrite mg/l

<0,010

<0,010

<0,010

0,5

COD KMnO4 mg/l

<2

2,7

<2

5

1,2-Dichloro-ethane µg/l

<2,0

-

3

Aluminum (Al) µg/l

3,4

5,85

5,45

200

Antimony (Sb) µg/l

 -

<0,05

-

5

Arsenic (As) µg/l

0,043

0,06

0,07

10

Benzene (C6H6) µg/l

 -

<1,0

-

1

Benzo-(a)pyrene µg/l

 -

<0,0020

-

0,01

Boron (B) mg/l

 -

0,0015

-

1

Mercury (Hg) µg/l

<0,1

<0,1

<0,1

1

Fluoride (F-) mg/l

<0,20

<0,20

<0,20

1,5

Cadmium (Cd) µg/l

<0,02

<0,02

<0,02

5

Total chlorophenols µg/l

 -

<0,40

-

10

Chrome (Cr) µg/l

0,23

<0,40

0,21

50

Copper (Cu) mg/l

0,087

0,21

0,24

2

Lead (Pb) µg/l

0,12

0,33

0,30

10

Sodium (Na) mg/l

2,5

0,39

2,37

200

Nickel µg/l

0,32

0,225

0,24

20

Total PAH µg/l

 -

0,1

-

0,1

Selenium (Se) µg/l

 -

0,14

-

10

Sulfate mg/l

4,3

2,55

3,75

250

Total cyanide µg/l

 -

<5

-

50

Total tri- and tetrachloroethene µg/l

 -

<1,0

-

10

Uranium (U) µg/l

 -

0,266

0,358

30

Indicative dose mSv/a

 -

<0,05

-

0,1

NEVEn sivulla käytetään evästeitä. Lue lisää. Jatkamalla sivuston selailua hyväksyt evästeiden käytön. [Hyväksyn ehdot]
OK