QUAIX VILLAGE - PETESSEY - FRETTE · Le Sappey-en-Chartreuse
GRENOBLE ALPES METROPOLE
Water safety
Water safety
Parameter
Unfiltered tap water
Allowed range
Filtered
Free Chlorinemg CL2/l
0.25
0.2 – 1
0.005 ▲
Total Chlorinemg CL2/l
0.29
No limit
0.058
General
General
Parameter
Unfiltered tap water
Allowed range
Filtered
TemperatureC
19.1
No limit
19.1
Hardnessmg CaCO3/l
191.7
80 – 459
191.7
Hardness fF
19.2
No limit
19.2
pH
7.9
6.5 – 9.5
7.9
TurbidityNTU
0.1
≤ 4
0.01
ColorColor Units
5
≤ 15
5
ConductivityμS / cm
412
≤ 2,500
412
TDSmg/l
263.7estimated
0 – 1,199
263.7
Alkalinitymg CaCO3/l
147.5
No limit
147.5
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
Mercuryμg Hg/l
Not reported
≤ 1
—
Nitritesmg NO2/l
0.01
≤ 0.5
0.004
Nitratesmg NO3/l
3.6
≤ 50
1.08
Minerals
Minerals
Parameter
Unfiltered tap water
Allowed range
Filtered
Chloridemg/l
7.4
≤ 250
7.4
Metals
Metals
Parameter
Unfiltered tap water
Allowed range
Filtered
Antimonyμg/l
1Sampled Oct 2025
≤ 5
1
Arsenicμg/l
Not reported
≤ 10
—
Cadmiumμg/l
1Sampled Oct 2025
≤ 5
1
Chromiumμg/l
5Sampled Oct 2025
≤ 50
5
Copperμg/l
27Sampled Oct 2025
≤ 2,000
1.35
Ironμg/l
10Sampled Mar 2025
≤ 200
10
Leadμg/l
2Sampled Oct 2025
≤ 10
0.1
Nickelμg/l
5Sampled Oct 2025
≤ 20
5
Perfluorinated chemicals
Perfluorinated chemicals
Parameter
Unfiltered tap water
Allowed range
Filtered
Total PFASug/L
Not reported
≤ 0.1
—
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
0.01
No limit
0.003
Sulfatemg/l
45.7
No limit
45.7
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.
