VAL AU PERCHE (COSTIERS) · Saint-Martin-du-Vieux-Bellême
SAUR FRANCE
Water safety
Water safety
Parameter
Unfiltered tap water
Allowed range
Filtered
Free Chlorinemg CL2/l
0.92
0.2 – 1
0.018 ▲
Total Chlorinemg CL2/l
0.99
No limit
0.2
General
General
Parameter
Unfiltered tap water
Allowed range
Filtered
TemperatureC
20
No limit
20
Hardnessmg CaCO3/l
325
80 – 459
325
Hardness fF
32.5
No limit
32.5
pH
7.6
6.5 – 9.5
7.6
TurbidityNTU
0.2
≤ 4
0.02
ConductivityμS / cm
681
≤ 2,500
681
TDSmg/l
435.8estimated
0 – 1,199
435.8
Alkalinitymg CaCO3/l
283
No limit
283
Bicarbonatemg HCO3/l
334Sampled Jun 2026
No limit
334
Pathogens
Pathogens
Parameter
Unfiltered tap water
Allowed range
Filtered
ClostridiumUFC/100ml
0Sampled Dec 2025
≤ 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 Jun 2026
≤ 50
0.5
Fluoridemg F/l
0.15Sampled Jun 2026
≤ 1.5
0.044
Mercuryμg Hg/l
0.05Sampled Jun 2026
≤ 1
0.005
Nitritesmg NO2/l
0.01
≤ 0.5
0.004
Nitratesmg NO3/l
14
≤ 50
4.2
Minerals
Minerals
Parameter
Unfiltered tap water
Allowed range
Filtered
Magnesiummg/l
6.8Sampled Jun 2026
No limit
6.8
Calciummg/l
120Sampled Jun 2026
No limit
120
Potassiummg/l
5.1Sampled Jun 2026
No limit
5.1
Chloridemg/l
21
≤ 250
21
Metals
Metals
Parameter
Unfiltered tap water
Allowed range
Filtered
Aluminiumμg/l
2Sampled Jun 2026
≤ 200
2
Antimonyμg/l
0.5Sampled Jun 2026
≤ 5
0.5
Arsenicμg/l
0.72Sampled Jun 2026
≤ 10
0.36
Bariumμg/l
1.3Sampled Jun 2026
≤ 1,000
1.3
Cadmiumμg/l
0.025Sampled Jun 2026
≤ 5
0.025
Chromiumμg/l
1Sampled Jun 2026
≤ 50
1
Ironμg/l
1.2
≤ 200
1.2
Manganeseμg/l
1Sampled Jun 2026
≤ 50
1
Leadμg/l
Not reported
≤ 10
—
Seleniumμg/l
0.5Sampled Jun 2026
≤ 10
0.5
Sodiummg/l
9.2Sampled Jun 2026
≤ 200
9.2
Chlorine by-products
Chlorine by-products
Parameter
Unfiltered tap water
Allowed range
Filtered
Trichloroethyleneμg/l
0.05Sampled Jun 2026
No limit
0.003
Total Trihalomethanesμg/l
7.09
≤ 100
0.35
Haloacetic acids
Haloacetic acids
Parameter
Unfiltered tap water
Allowed range
Filtered
Total haloacetic acidsμg/l
1.6Sampled Jun 2026
≤ 60
0.08
Pesticides
Pesticides
Parameter
Unfiltered tap water
Allowed range
Filtered
Heptachlorug/L
0.005Sampled Jun 2026
≤ 0.4
0.005
Total pesticidesug/L
0.06Sampled Jun 2026
≤ 0.5
0.06
Herbicides
Herbicides
Parameter
Unfiltered tap water
Allowed range
Filtered
D 2 4ug/L
0.02Sampled Jun 2026
≤ 70
0.02
Atrazineug/L
0.01Sampled Jun 2026
≤ 3
0.01
Perfluorinated chemicals
Perfluorinated chemicals
Parameter
Unfiltered tap water
Allowed range
Filtered
PFOAug/L
0.001Sampled Jun 2026
No limit
0.001
PFOSug/L
0.001Sampled Jun 2026
No limit
0.001
PFNAug/L
0.001Sampled Jun 2026
No limit
0.001
Total PFASug/L
0Sampled Jun 2026
≤ 0.1
0
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
34
No limit
34
Uraniumug/L
0.24Sampled Jun 2026
No limit
0.24
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.
