SEM MVG CHATEAUNEUF COUZON · Saint-Romain-en-Jarez
CHOLTON S.A.
Water safety
Water safety
Parameter
Unfiltered tap water
Allowed range
Filtered
Free Chlorinemg CL2/l
0.51
0.2 – 1
0.01 ▲
Total Chlorinemg CL2/l
0.69
No limit
0.14
General
General
Parameter
Unfiltered tap water
Allowed range
Filtered
TemperatureC
14.2
No limit
14.2
Hardnessmg CaCO3/l
121.2
80 – 459
121.2
Hardness fF
12.1
No limit
12.1
pH
8.1
6.5 – 9.5
8.1
TurbidityNTU
0.12
≤ 4
0.012
ColorColor Units
5
≤ 15
5
ConductivityμS / cm
323
≤ 2,500
323
TDSmg/l
206.7estimated
0 – 1,199
206.7
Alkalinitymg CaCO3/l
89
No limit
89
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
15.7
≤ 50
4.71
Minerals
Minerals
Parameter
Unfiltered tap water
Allowed range
Filtered
Magnesiummg/l
3.5
No limit
3.5
Calciummg/l
42.7
No limit
42.7
Potassiummg/l
2.3
No limit
2.3
Chloridemg/l
32.4
≤ 250
32.4
Metals
Metals
Parameter
Unfiltered tap water
Allowed range
Filtered
Arsenicμg/l
Not reported
≤ 10
—
Ironμg/l
10Sampled May 2026
≤ 200
10
Leadμg/l
Not reported
≤ 10
—
Sodiummg/l
15.6
≤ 200
15.6
Chlorine by-products
Chlorine by-products
Parameter
Unfiltered tap water
Allowed range
Filtered
Total Trihalomethanesμg/l
44
≤ 100
2.2
Haloacetic acids
Haloacetic acids
Parameter
Unfiltered tap water
Allowed range
Filtered
Total haloacetic acidsμg/l
6.4
≤ 60
0.32
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
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
0.03
No limit
0.009
Sulfatemg/l
12.7
No limit
12.7
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.
