SUD VIENNE ST PIERRE D'EX STATION · Val-de-Comporté
EAUX DE VIENNE - SIVEER
Water safety
Water safety
Parameter
Unfiltered tap water
Allowed range
Filtered
Free Chlorinemg CL2/l
0.3
0.2 – 1
0.006 ▲
Total Chlorinemg CL2/l
0.3
No limit
0.06
General
General
Parameter
Unfiltered tap water
Allowed range
Filtered
TemperatureC
26
No limit
26
Hardnessmg CaCO3/l
290
80 – 459
290
Hardness fF
29
No limit
29
pH
7.3
6.5 – 9.5
7.3
TurbidityNTU
0.3
≤ 4
0.03
ColorColor Units
5Sampled Jan 2026
≤ 15
5
ConductivityμS / cm
641
≤ 2,500
641
TDSmg/l
410.2estimated
0 – 1,199
410.2
Alkalinitymg CaCO3/l
249
No limit
249
Bicarbonatemg HCO3/l
310Sampled Oct 2025
No limit
310
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
5Sampled Jan 2026
≤ 50
0.25
Fluoridemg F/l
0.68
≤ 1.5
0.2
Mercuryμg Hg/l
0.015Sampled Jan 2026
≤ 1
0.002
Nitritesmg NO2/l
0.01
≤ 0.5
0.004
Nitratesmg NO3/l
27
≤ 50
8.1
Minerals
Minerals
Parameter
Unfiltered tap water
Allowed range
Filtered
Magnesiummg/l
12Sampled Jan 2026
No limit
12
Calciummg/l
105Sampled Jan 2026
No limit
105
Potassiummg/l
2.5Sampled Jan 2026
No limit
2.5
Chloridemg/l
25
≤ 250
25
Metals
Metals
Parameter
Unfiltered tap water
Allowed range
Filtered
Aluminiumμg/l
20Sampled Jan 2026
≤ 200
20
Antimonyμg/l
0.5Sampled Jan 2026
≤ 5
0.5
Arsenicμg/l
0.4Sampled Jan 2026
≤ 10
0.2
Bariumμg/l
40Sampled Jan 2026
≤ 1,000
40
Cadmiumμg/l
0.025Sampled Jan 2026
≤ 5
0.025
Chromiumμg/l
1Sampled Jan 2026
≤ 50
1
Copperμg/l
8Sampled Jan 2026
≤ 2,000
0.4
Ironμg/l
11Sampled Jan 2026
≤ 200
11
Manganeseμg/l
1Sampled Jan 2026
≤ 50
1
Leadμg/l
0.4Sampled Jan 2026
≤ 10
0.02
Nickelμg/l
2Sampled Jan 2026
≤ 20
2
Seleniumμg/l
0.7Sampled Jan 2026
≤ 10
0.7
Sodiummg/l
21Sampled Jan 2026
≤ 200
21
Chlorine by-products
Chlorine by-products
Parameter
Unfiltered tap water
Allowed range
Filtered
Trichloroethyleneμg/l
0.15Sampled Jan 2026
No limit
0.008
Total Trihalomethanesμg/l
3.91Sampled Jan 2026
≤ 100
0.2
Haloacetic acids
Haloacetic acids
Parameter
Unfiltered tap water
Allowed range
Filtered
Total haloacetic acidsμg/l
1Sampled Jan 2026
≤ 60
0.05
Pesticides
Pesticides
Parameter
Unfiltered tap water
Allowed range
Filtered
Heptachlorug/L
0.01
≤ 0.4
0.01
Total pesticidesug/L
0
≤ 0.5
0
Herbicides
Herbicides
Parameter
Unfiltered tap water
Allowed range
Filtered
D 2 4ug/L
0.06
≤ 70
0.06
Atrazineug/L
0.02
≤ 3
0.02
Perfluorinated chemicals
Perfluorinated chemicals
Parameter
Unfiltered tap water
Allowed range
Filtered
PFOAug/L
0.001Sampled Jan 2026
No limit
0.001
PFOSug/L
0.001Sampled Jan 2026
No limit
0.001
PFNAug/L
0.001Sampled Jan 2026
No limit
0.001
Total PFASug/L
0.071Sampled Jan 2026
≤ 0.1
0.007
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
24
No limit
24
Uraniumug/L
0.5Sampled Jan 2026
No limit
0.5
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.
