BOEN SUR LIGNON LE GUET · Sainte-Agathe-la-Bouteresse
CA LOIRE FOREZ AGGLOMÉRATION
Water safety
Water safety
Parameter
Unfiltered tap water
Allowed range
Filtered
Free Chlorinemg CL2/l
0.17 ● (Near the limit)
0.2 – 1
0.003 ▲
Total Chlorinemg CL2/l
0.26
No limit
0.052
General
General
Parameter
Unfiltered tap water
Allowed range
Filtered
TemperatureC
13.9
No limit
13.9
Hardnessmg CaCO3/l
38.9 ● (Near the limit)
80 – 459
38.9 ●
Hardness fF
3.89
No limit
3.89
pH
6.7
6.5 – 9.5
6.7
TurbidityNTU
0.27
≤ 4
0.027
ColorColor Units
5
≤ 15
5
ConductivityμS / cm
153
≤ 2,500
153
TDSmg/l
97.9estimated
0 – 1,199
97.9
Alkalinitymg CaCO3/l
29
No limit
29
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 Jun 2025
≤ 50
0.5
Fluoridemg F/l
0.05Sampled Jun 2025
≤ 1.5
0.015
Mercuryμg Hg/l
0.01Sampled Jun 2025
≤ 1
0.001
Nitritesmg NO2/l
0.02
≤ 0.5
0.008
Nitratesmg NO3/l
5.7
≤ 50
1.71
Minerals
Minerals
Parameter
Unfiltered tap water
Allowed range
Filtered
Magnesiummg/l
2.8Sampled Jun 2025
No limit
2.8
Calciummg/l
11.6Sampled Jun 2025
No limit
11.6
Potassiummg/l
1.7Sampled Jun 2025
No limit
1.7
Chloridemg/l
20
≤ 250
20
Metals
Metals
Parameter
Unfiltered tap water
Allowed range
Filtered
Aluminiumμg/l
25Sampled Jun 2025
≤ 200
25
Arsenicμg/l
3Sampled Jun 2025
≤ 10
1.5
Bariumμg/l
25Sampled Jun 2025
≤ 1,000
25
Ironμg/l
67Sampled Jun 2025
≤ 200
67
Manganeseμg/l
10Sampled Jun 2025
≤ 50
10
Leadμg/l
Not reported
≤ 10
—
Seleniumμg/l
2Sampled Jun 2025
≤ 10
2
Sodiummg/l
10.4Sampled Jun 2025
≤ 200
10.4
Chlorine by-products
Chlorine by-products
Parameter
Unfiltered tap water
Allowed range
Filtered
Trichloroethyleneμg/l
0.1Sampled Jun 2025
No limit
0.005
Total Trihalomethanesμg/l
17.4Sampled Jun 2025
≤ 100
0.87
Pesticides
Pesticides
Parameter
Unfiltered tap water
Allowed range
Filtered
Heptachlorug/L
0.005Sampled Jun 2025
≤ 0.4
0.005
Total pesticidesug/L
0.005Sampled Jun 2025
≤ 0.5
0.005
Herbicides
Herbicides
Parameter
Unfiltered tap water
Allowed range
Filtered
D 2 4ug/L
0.02Sampled Jun 2025
≤ 70
0.02
Atrazineug/L
0.005Sampled Jun 2025
≤ 3
0.005
Perfluorinated chemicals
Perfluorinated chemicals
Parameter
Unfiltered tap water
Allowed range
Filtered
PFOAug/L
0.001Sampled Jun 2025
No limit
0.001
PFOSug/L
0.001Sampled Jun 2025
No limit
0.001
PFNAug/L
0.001Sampled Jun 2025
No limit
0.001
Total PFASug/L
0.028Sampled Jun 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
7.7
No limit
7.7
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.
