welcome to zurich water supply · 2019. 6. 27. · welcome to zurich water supply clean and safe...

Stadt ZürichWasserversorgung

Welcome to Zurich Water Supply

Clean and safe drinking water for everyone


Tasks of Zurich Water SupplySupplydrinking water andwater for fire fighting

– at any time in sufficient quantity– of excellent quality– with sufficient pressure– as cost-efficiently as possible

with 280 employees


Supply Area

Zürich

Wiesen-dangen

ElsauElgg

Schlatt

ZellKyburgTurbenthal

WilaSternenberg

WeisslingenWild-berg

Russikon

Fehraltorf BaumaPfäffikon Hittnau

Bäretswil

Winterthur

Dättlikon

Kloten

Hausena.A.

OttenbachAeugst a.A.

Affolterna.A.

Bon-stetten

Jonen

IslisbergUnterlunkhofen

Oberlunkhofen

Nieder-glatt

Rudolfstetten-Friedlisberg

Urdorf

DielsdorfNieder-hasli

RegensdorfDän-ikon

Schlieren

Gerolds-wil

Oetwila.d.L.

Volketswil

Greifen-see

Steinmaur

Bachs Hoch-felden Bülach

Rorbas

Killwangen

EmbrachPfungen

Ober-Embrach

Brütten

Lindau

HöriNieder-weningen

Ober-weningen

Nürens-dorf

Lufingen

Bachen-bülach

Bassers-dorf

Illnau-Effretikon

Schöfflis-dorf

Neer-ach

Schlei-nikon

Boppelsen

WürenlosOtelfingen

Hüttikon

Spreitenbach

Bergdietikon

Hinwil

Rüti

Dürnten

Bubikon

Egg

Hombrechtikon

GrüningenOetwil a.S.

Meilen

Herrliberg

Horgen

Thalwil

Obfelden Mettmen-stetten

Langnaua.A. Uetikona.S.

Adliswil

Hedingen

Arni

Oberwil-Lieli

Aesch

Widen

Untereng-stringenDietikon

Rüschli-kon

Kappel a.A.

Stäfa

WädenswilHirzel

Wollerau

Hütten

Schönen-berg

Menzingen

Baar Neuheim

Rifferswil

Zug

Cham Stein-hausen

Hünenberg

Masch-wanden

KnonauRichterswil

Oberrieden

Männe-dorf

Uitikon

Wetzikon

GossauMönch-altorf

Rümlang

Winkel

Opfikon-Glattbrugg

Wallisellen

Dietlikon

UsterSee-gräben

Wangen-Brüttisellen

DübendorfSchwerzen-bach

Fällanden

MaurZumikon

Zollikon

Stallikon

ZufikonBerikon

Wettswila.A.

Birmensdorf

Oberglatt

Eggenwil

Regens-berg

Ober-engstringen

Weiningen

Dällikon

KüsnachtKilch-berg

Erlenbach

Buchs

City of Zurich- 400,000 inhabitants

Plus 67 communities- 510,000 inhabitants- 660 km2 supply area


Origin of the water

70 % Lakewater

Lakewatertreatmentplant Lengg

SpringwaterplantSihlbrugg

Lakewatertreatmentplant Moos

GroundwaterplantHardhof

15 % Springwater15 % Groundwater

Source


Water supply before 1868


Seite 6

First water distribution 1868


page 7

Typhus Epidemia 1884


Insufficient Maintenance


First Lakewaterplant at Sihlquai 1885


Seite 10

1911: Decision to buildLakewatertreatmentplant Moos


Lakewater treatment plant Moos

Built: 1914, Capacity: 100‘000* m3/day *including 20‘000 Springwater)


Seite 12

Lakewater treatment plant Moos


Built: 1960 Expanded:1975, Capacity: 250‘000 m3/day

Lakewater treatment plant Lengg


Lakewater treatment

30 m

Raw water pipe620 m

Pressure pipe 640 m

Raw water intake

Raw waterpumping station

Treatment facility


Rapid sand filtrationPre-ozonation

Second ozonation

BACfiltration

Drinking waterpumping station

To thereservoirs

pH-correction

Raw waterpumping station

Lake Zurich

Slow sandfiltration

Bactereoligical stable waterwithout chlorination

Lakewater treatment


Origin of the water

70 % Lakewater







Springs around Zurich

Filter HüttenrainZürichbergSchwamendingen

FilterStreitholz

FilterDolder

Filter RehalpZollikon

Filter Oetlisberg

Meilen

Filter Glaubten

Filter Gubel

Filter Lyren

Filter Dorf Filter Triemli

Zürich

ÜetlibergFilterLeimbach

Pumpwerk Kohlboden

Baar

Thalwil

Horgen

ZentraleSihlbrugg

Hütten

0 1 2 3 4 5 km

WasserschlossGontenbach

WasserschlossRagnau Wasserschloss

Eichbach

WasserschlossChlemmeriboden

WasserschlossEntlisberg

Seewasserwerk Moos

Zürichsee

160 Springs in Zurich

Affoltern

ReservoirFrauental

120 Springs in Sihl- andLorzetal


Spring water distribution

The 85 emergency water fountainsare included in the 400 spring waterfountains and are connected to the150 km spring water distributionsystem.


Origin of the water

70 % Lakewater







Groundwaterplant Hardhof

Built: 1934/1973, Theoretical capacity: 150‘000 m3/day


Seite 21

Groundwater plant Hardhof


ARB1

ARB3

ARB2A

B

C

D

SB

SB

VFB

VFB

Technical realisation


Water distribution

Maintainance of thesystem:

1100 km distribution450 km household8000 hydrants

Yearly renewal rate of30km.


Drinking water is foodstuffs

SELF CONTROL


human

machine

distribution

domesticinstallations

treatment

raw water

storage

methode

material

The principles of HACCP


Quality ControlProduction Finances &Controlling

Chemistry

Trace Elements

Biology

System Operation

Electrical Engineering

Accounting

Customer Services

IT-Services

Distribution

Planning LineConstruction

Fountains

Distribution Network

Director

Public Relations

Maintenance

Process Technology

Civil Engineering Building Services

Controlling

Technology

Treatment Plants

Manager QSEQuality / Security / Environment

Planning &Documentation

Independent quality control

LAB


Quality control

Microbiology-Lab(Germs, Bacteria)

Limnology-Lab(Algea, Zoo-Plancton)

Chemical-Lab(chemical substances, metals)

Micropollutants-Lab(organic substances)

Continuous measuring ofchemical/physical parameters(pH, turbidity, UV- adsorbance).

Biosensors:Fish andDaphnia.

450 online Sensores

1400 Lab parameters14000 samples / year

4 Biosensors


Modern and efficient infrastructure


Up to date software solutions


Figure from: Hans-Peter Kaiser, WV Zurich

Num

bero

fmea

sure

dpa

ram

eter

s

Measured routine parameters

2019

1400


0

5

10

15

20

25

Time

Dev

elop

men

t

measurableparameters

assassmentcriteria

Evaluation of the measurements?

actual Version: May 2017


Effect oriented analytics

Biotests (YES, YAS)


Up to date online analyticse.g. Online Bacteria Analyzer


Quality ControlProduction Finances &Controlling

Chemistry

Trace Elements

Biology

System Operation

Electrical Engineering

Accounting

Customer Services

IT-Services

Distribution

Planning LineConstruction

Fountains

Distribution Network

Director

Public Relations

Maintenance

Process Technology

Civil Engineering Building Services

Controlling

Technology

Treatment Plants

Manager QSEQuality / Security / Environment

Planning &Documentation

Cost efficient

~40 Million ~35 Million~5 Million


Consumption: 160 l / Person per dayDishwasher

2%

Toilet31%Washing 19%

Cooking/drinkingand dish washing 15%

Bath/shower 20%Personal hygiene13%

Others2 %


Water pricing

Average price per m3 drinking water: approx. 2 Fr.(yearly revenue: approx. 100 Mio.)

1 l drinking water= CHF 0.002

1 l mineral water = CHF 0.50250 ×


Most environmental friendly beverage

Drinking watercooled water from soda machine

Mineral water cooled in galloneBotteled mineral water

Cooled beerCofe from a machine

Cooled apple juiceCooled milk

Red wine500 1‘500 2‘500 3‘000

1.41 environmental impact points

9550

= approx. 4.5 m by car= approx. 9 m flight in EU


Seite 38

1200 fountains in the city of Zurich


Thank you very much for yourattention…

Any questions?

welcome to zurich water supply · 2019. 6. 27. · welcome to zurich water supply clean and safe...

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