LA RUCHERE HAUT SERVICE · Saint-Pierre-de-Chartreuse
MAIRIE DE SAINT-CHRISTOPHE-SUR-GUIE
Water safety
Water safety
Parameter
Unfiltered tap water
Allowed range
Filtered
Free Chlorinemg CL2/l
0.05 ● (Near the limit)
0.2 – 1
0.001 ▲
Total Chlorinemg CL2/l
0.05
No limit
0.01
General
General
Parameter
Unfiltered tap water
Allowed range
Filtered
TemperatureC
16.5
No limit
16.5
Hardnessmg CaCO3/l
203.3
80 – 459
203.3
Hardness fF
20.3
No limit
20.3
pH
8
6.5 – 9.5
8
TurbidityNTU
1.9
≤ 4
0.19
ColorColor Units
5
≤ 15
5
ConductivityμS / cm
405
≤ 2,500
405
TDSmg/l
259.2estimated
0 – 1,199
259.2
Alkalinitymg CaCO3/l
231.5
No limit
231.5
Pathogens
Pathogens
Parameter
Unfiltered tap water
Allowed range
Filtered
ClostridiumUFC/100ml
0
≤ 0
0
eColiUFC/100ml
0
≤ 0
0
BacteriasNMP/100ml
0
≤ 0
0
EnterococcusUFC/100ml
0
≤ 0
0
Chemical parameters
Chemical parameters
Parameter
Unfiltered tap water
Allowed range
Filtered
Cyanide totalμg CN/l
10
≤ 50
0.5
Fluoridemg F/l
0.18
≤ 1.5
0.054
Mercuryμg Hg/l
0.01
≤ 1
0.001
Nitritesmg NO2/l
0.01
≤ 0.5
0.004
Nitratesmg NO3/l
2.1
≤ 50
0.63
Minerals
Minerals
Parameter
Unfiltered tap water
Allowed range
Filtered
Magnesiummg/l
4.8
No limit
4.8
Calciummg/l
73.4
No limit
73.4
Potassiummg/l
0.4
No limit
0.4
Chloridemg/l
4
≤ 250
4
Metals
Metals
Parameter
Unfiltered tap water
Allowed range
Filtered
Aluminiumμg/l
109
≤ 200
109
Antimonyμg/l
1
≤ 5
1
Arsenicμg/l
2
≤ 10
1
Bariumμg/l
10
≤ 1,000
10
Cadmiumμg/l
1
≤ 5
1
Chromiumμg/l
5
≤ 50
5
Copperμg/l
11
≤ 2,000
0.55
Ironμg/l
13
≤ 200
13
Manganeseμg/l
10
≤ 50
10
Leadμg/l
2
≤ 10
0.1
Nickelμg/l
5
≤ 20
5
Seleniumμg/l
2
≤ 10
2
Sodiummg/l
6.3
≤ 200
6.3
Chlorine by-products
Chlorine by-products
Parameter
Unfiltered tap water
Allowed range
Filtered
Trichloroethyleneμg/l
0.1
No limit
0.005
Total Trihalomethanesμg/l
56.1
≤ 100
2.81
Haloacetic acids
Haloacetic acids
Parameter
Unfiltered tap water
Allowed range
Filtered
Total haloacetic acidsμg/l
0.7
≤ 60
0.035
Pesticides
Pesticides
Parameter
Unfiltered tap water
Allowed range
Filtered
Heptachlorug/L
0.005
≤ 0.4
0.005
Total pesticidesug/L
0.5 ● (Near the limit)
≤ 0.5
0.5 ●
Herbicides
Herbicides
Parameter
Unfiltered tap water
Allowed range
Filtered
D 2 4ug/L
0.02
≤ 70
0.02
Atrazineug/L
0.005
≤ 3
0.005
Perfluorinated chemicals
Perfluorinated chemicals
Parameter
Unfiltered tap water
Allowed range
Filtered
PFOAug/L
0.001
No limit
0.001
PFOSug/L
0.001
No limit
0.001
PFNAug/L
0.001
No limit
0.001
Total PFASug/L
0.002
≤ 0.1
0
PFAS 4ng/l
Not reported
No limit
—
PFAS 21ng/l
Not reported
No limit
—
Other
Other
Parameter
Unfiltered tap water
Allowed range
Filtered
Ammoniamg/l
0.02
No limit
0.006
Sulfatemg/l
10.6
No limit
10.6
Uraniumug/L
10
No limit
10
Data from the French health inspection of drinking water (Ministry of Health, regional health agencies), per distribution unit. Quality ranges are based on WHO guidelines, EU Directive 2020/2184 and the French public health code.
