SERA - SYNDICAT DES EAUX DE LA REGION D'AMBERIEU-EN-BUGEY
Water safety
Water safety
Parameter
Unfiltered tap water
Allowed range
Filtered
Free Chlorinemg CL2/l
0.33
0.2 – 1
0.007 ▲
Total Chlorinemg CL2/l
0.38
No limit
0.076
General
General
Parameter
Unfiltered tap water
Allowed range
Filtered
TemperatureC
19.8
No limit
19.8
Hardnessmg CaCO3/l
245.5
80 – 459
245.5
Hardness fF
24.6
No limit
24.6
pH
7.8
6.5 – 9.5
7.8
TurbidityNTU
0.1
≤ 4
0.01
ColorColor Units
5
≤ 15
5
ConductivityμS / cm
457
≤ 2,500
457
TDSmg/l
292.5estimated
0 – 1,199
292.5
Alkalinitymg CaCO3/l
227
No limit
227
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 Aug 2025
≤ 50
0.5
Fluoridemg F/l
0.05Sampled Aug 2025
≤ 1.5
0.015
Mercuryμg Hg/l
0.01Sampled Aug 2025
≤ 1
0.001
Nitritesmg NO2/l
0.01
≤ 0.5
0.004
Nitratesmg NO3/l
4.8
≤ 50
1.44
Minerals
Minerals
Parameter
Unfiltered tap water
Allowed range
Filtered
Magnesiummg/l
1.1
No limit
1.1
Calciummg/l
96.4
No limit
96.4
Potassiummg/l
0.3Sampled Aug 2025
No limit
0.3
Chloridemg/l
1.8
≤ 250
1.8
Metals
Metals
Parameter
Unfiltered tap water
Allowed range
Filtered
Aluminiumμg/l
10Sampled Aug 2025
≤ 200
10
Antimonyμg/l
1Sampled Jan 2025
≤ 5
1
Arsenicμg/l
2Sampled Aug 2025
≤ 10
1
Bariumμg/l
10Sampled Aug 2025
≤ 1,000
10
Cadmiumμg/l
1Sampled Jan 2025
≤ 5
1
Chromiumμg/l
5Sampled Jan 2025
≤ 50
5
Copperμg/l
16Sampled Jan 2025
≤ 2,000
0.8
Ironμg/l
10Sampled Aug 2025
≤ 200
10
Manganeseμg/l
10Sampled Aug 2025
≤ 50
10
Leadμg/l
2Sampled Jan 2025
≤ 10
0.1
Nickelμg/l
5Sampled Jan 2025
≤ 20
5
Seleniumμg/l
2Sampled Aug 2025
≤ 10
2
Sodiummg/l
1Sampled Aug 2025
≤ 200
1
Chlorine by-products
Chlorine by-products
Parameter
Unfiltered tap water
Allowed range
Filtered
Trichloroethyleneμg/l
0.1Sampled Aug 2025
No limit
0.005
Total Trihalomethanesμg/l
0.21Sampled Aug 2025
≤ 100
0.011
Pesticides
Pesticides
Parameter
Unfiltered tap water
Allowed range
Filtered
Heptachlorug/L
0.005Sampled Aug 2025
≤ 0.4
0.005
Total pesticidesug/L
0.005Sampled Aug 2025
≤ 0.5
0.005
Herbicides
Herbicides
Parameter
Unfiltered tap water
Allowed range
Filtered
D 2 4ug/L
0.02Sampled Aug 2025
≤ 70
0.02
Atrazineug/L
0.005Sampled Aug 2025
≤ 3
0.005
Perfluorinated chemicals
Perfluorinated chemicals
Parameter
Unfiltered tap water
Allowed range
Filtered
PFOAug/L
0.001Sampled Aug 2025
No limit
0.001
PFOSug/L
0.001Sampled Aug 2025
No limit
0.001
PFNAug/L
0.001Sampled Aug 2025
No limit
0.001
Total PFASug/L
0.029Sampled Aug 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
0.01
No limit
0.003
Sulfatemg/l
5.4
No limit
5.4
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.
