SAINT GERMAIN DE LA COUDRE · Cour-Maugis sur Huisne
SIAEP DU PERCHE SUD
Water safety
Water safety
Parameter
Unfiltered tap water
Allowed range
Filtered
Free Chlorinemg CL2/l
0.22
0.2 – 1
0.004 ▲
Total Chlorinemg CL2/l
0.27
No limit
0.054
General
General
Parameter
Unfiltered tap water
Allowed range
Filtered
TemperatureC
23
No limit
23
Hardnessmg CaCO3/l
363
80 – 459
363
Hardness fF
36.3
No limit
36.3
pH
7.6
6.5 – 9.5
7.6
TurbidityNTU
0.48
≤ 4
0.048
ConductivityμS / cm
703
≤ 2,500
703
TDSmg/l
449.9estimated
0 – 1,199
449.9
Alkalinitymg CaCO3/l
298
No limit
298
Bicarbonatemg HCO3/l
371Sampled Apr 2026
No limit
371
Pathogens
Pathogens
Parameter
Unfiltered tap water
Allowed range
Filtered
ClostridiumUFC/100ml
0Sampled Apr 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 Apr 2026
≤ 50
0.5
Fluoridemg F/l
0.11Sampled Apr 2026
≤ 1.5
0.032
Mercuryμg Hg/l
0.05Sampled Apr 2026
≤ 1
0.005
Nitritesmg NO2/l
0.01
≤ 0.5
0.004
Nitratesmg NO3/l
7.2
≤ 50
2.16
Minerals
Minerals
Parameter
Unfiltered tap water
Allowed range
Filtered
Magnesiummg/l
12Sampled Apr 2026
No limit
12
Calciummg/l
130Sampled Apr 2026
No limit
130
Potassiummg/l
2.4Sampled Apr 2026
No limit
2.4
Chloridemg/l
18
≤ 250
18
Metals
Metals
Parameter
Unfiltered tap water
Allowed range
Filtered
Aluminiumμg/l
2Sampled Apr 2026
≤ 200
2
Antimonyμg/l
0.5Sampled Apr 2026
≤ 5
0.5
Arsenicμg/l
0.25Sampled Apr 2026
≤ 10
0.13
Bariumμg/l
13Sampled Apr 2026
≤ 1,000
13
Cadmiumμg/l
0.025Sampled Apr 2026
≤ 5
0.025
Chromiumμg/l
1Sampled Apr 2026
≤ 50
1
Ironμg/l
39.1
≤ 200
39.1
Manganeseμg/l
1Sampled Apr 2026
≤ 50
1
Leadμg/l
Not reported
≤ 10
—
Seleniumμg/l
1.1Sampled Apr 2026
≤ 10
1.1
Sodiummg/l
7Sampled Apr 2026
≤ 200
7
Chlorine by-products
Chlorine by-products
Parameter
Unfiltered tap water
Allowed range
Filtered
Trichloroethyleneμg/l
0.05Sampled Apr 2026
No limit
0.003
Total Trihalomethanesμg/l
4.13Sampled Apr 2026
≤ 100
0.21
Haloacetic acids
Haloacetic acids
Parameter
Unfiltered tap water
Allowed range
Filtered
Total haloacetic acidsμg/l
0.9Sampled Apr 2026
≤ 60
0.045
Pesticides
Pesticides
Parameter
Unfiltered tap water
Allowed range
Filtered
Heptachlorug/L
0.005Sampled Apr 2026
≤ 0.4
0.005
Total pesticidesug/L
0.038Sampled Apr 2026
≤ 0.5
0.038
Herbicides
Herbicides
Parameter
Unfiltered tap water
Allowed range
Filtered
D 2 4ug/L
0.02Sampled Apr 2026
≤ 70
0.02
Atrazineug/L
0.01Sampled Apr 2026
≤ 3
0.01
Perfluorinated chemicals
Perfluorinated chemicals
Parameter
Unfiltered tap water
Allowed range
Filtered
PFOAug/L
0.001Sampled Apr 2026
No limit
0.001
PFOSug/L
0.001Sampled Apr 2026
No limit
0.001
PFNAug/L
0.001Sampled Apr 2026
No limit
0.001
Total PFASug/L
0Sampled Apr 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
44
No limit
44
Uraniumug/L
0.23Sampled Apr 2026
No limit
0.23
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.
