VOISSANT HAUT SERVICE · Saint-Pierre-de-Chartreuse
SUEZ EAU FRANCE - ARA
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
21.3
No limit
21.3
Hardnessmg CaCO3/l
235.9Sampled Jul 2026
80 – 459
235.9
Hardness fF
23.6Sampled Jul 2026
No limit
23.6
pH
7.7
6.5 – 9.5
7.7
TurbidityNTU
0.54
≤ 4
0.054
ColorColor Units
5
≤ 15
5
ConductivityμS / cm
438
≤ 2,500
438
TDSmg/l
280.3estimated
0 – 1,199
280.3
Alkalinitymg CaCO3/l
277.5Sampled Jul 2026
No limit
277.5
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
0.04Sampled Jul 2026
≤ 0.5
0.016
Nitratesmg NO3/l
3.8Sampled Jul 2026
≤ 50
1.14
Minerals
Minerals
Parameter
Unfiltered tap water
Allowed range
Filtered
Chloridemg/l
3.9Sampled Jul 2026
≤ 250
3.9
Metals
Metals
Parameter
Unfiltered tap water
Allowed range
Filtered
Antimonyμg/l
1Sampled Nov 2025
≤ 5
1
Arsenicμg/l
Not reported
≤ 10
—
Cadmiumμg/l
1Sampled Nov 2025
≤ 5
1
Chromiumμg/l
5Sampled Nov 2025
≤ 50
5
Copperμg/l
146Sampled Nov 2025
≤ 2,000
7.3
Leadμg/l
3Sampled Nov 2025
≤ 10
0.15
Nickelμg/l
5Sampled Nov 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
0.01Sampled Jul 2026
No limit
0.003
Sulfatemg/l
4.6Sampled Jul 2026
No limit
4.6
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.
