MARFAY-MONTAGNE 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
0.25
0.2 – 1
0.005 ▲
Total Chlorinemg CL2/l
0.28
No limit
0.056
General
General
Parameter
Unfiltered tap water
Allowed range
Filtered
TemperatureC
8.6
No limit
8.6
Hardnessmg CaCO3/l
237.9
80 – 459
237.9
Hardness fF
23.8
No limit
23.8
pH
7.6
6.5 – 9.5
7.6
TurbidityNTU
0.28
≤ 4
0.028
ColorColor Units
5
≤ 15
5
ConductivityμS / cm
455
≤ 2,500
455
TDSmg/l
291.2estimated
0 – 1,199
291.2
Alkalinitymg CaCO3/l
242
No limit
242
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
10Sampled Oct 2025
≤ 50
0.5
Fluoridemg F/l
0.06Sampled Oct 2025
≤ 1.5
0.018
Mercuryμg Hg/l
0.01Sampled Oct 2025
≤ 1
0.001
Nitritesmg NO2/l
0.01
≤ 0.5
0.004
Nitratesmg NO3/l
3.4
≤ 50
1.02
Minerals
Minerals
Parameter
Unfiltered tap water
Allowed range
Filtered
Magnesiummg/l
3.7Sampled Oct 2025
No limit
3.7
Calciummg/l
95.3Sampled Oct 2025
No limit
95.3
Potassiummg/l
0.6Sampled Oct 2025
No limit
0.6
Chloridemg/l
4.7
≤ 250
4.7
Metals
Metals
Parameter
Unfiltered tap water
Allowed range
Filtered
Aluminiumμg/l
19Sampled Oct 2025
≤ 200
19
Arsenicμg/l
2Sampled Oct 2025
≤ 10
1
Bariumμg/l
11Sampled Oct 2025
≤ 1,000
11
Ironμg/l
21Sampled Oct 2025
≤ 200
21
Manganeseμg/l
10Sampled Oct 2025
≤ 50
10
Leadμg/l
Not reported
≤ 10
—
Seleniumμg/l
2Sampled Oct 2025
≤ 10
2
Sodiummg/l
2.7Sampled Oct 2025
≤ 200
2.7
Chlorine by-products
Chlorine by-products
Parameter
Unfiltered tap water
Allowed range
Filtered
Trichloroethyleneμg/l
0.1Sampled Oct 2025
No limit
0.005
Total Trihalomethanesμg/l
16.6Sampled Oct 2025
≤ 100
0.83
Pesticides
Pesticides
Parameter
Unfiltered tap water
Allowed range
Filtered
Heptachlorug/L
0.005Sampled Oct 2025
≤ 0.4
0.005
Total pesticidesug/L
0.5 ● (Near the limit)Sampled Oct 2025
≤ 0.5
0.5 ●
Herbicides
Herbicides
Parameter
Unfiltered tap water
Allowed range
Filtered
D 2 4ug/L
0.02Sampled Oct 2025
≤ 70
0.02
Atrazineug/L
0.005Sampled Oct 2025
≤ 3
0.005
Perfluorinated chemicals
Perfluorinated chemicals
Parameter
Unfiltered tap water
Allowed range
Filtered
PFOAug/L
0.001Sampled Oct 2025
No limit
0.001
PFOSug/L
0.001Sampled Oct 2025
No limit
0.001
PFNAug/L
0.001Sampled Oct 2025
No limit
0.001
Total PFASug/L
0.029Sampled Oct 2025
≤ 0.1
0.003
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
0.05
No limit
0.015
Sulfatemg/l
4.5
No limit
4.5
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.
