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Italy · Comune

Drinking water in Ferno

One supply zone, published by ALFA S.r.l.. The values come from the publications of the Italian water suppliers (gestori), which D.Lgs. 18/2023 requires of them from 12 January 2026. Italian parametric values apply: trihalomethanes 30 instead of 50 µg/l, chromium 25 µg/l, uranium 30 instead of 10 µg/l; for hardness there is no maximum value, it is given in French degrees (°F).

Comune di Ferno

ALFA S.r.l.
Key values Comune di Ferno
Parameter Value Parametric value Share of the parametric value Reference
Nitrate 8 mg/l 50 mg/l
16 %
Median · Comune di Ferno · Source [1]
Lead < 1 µg/l
below limit of quantification
10 µg/l
< 10 % *
Maximum · Comune di Ferno · Source [1]
Escherichia coli (E. coli) 0 UFC/100ml 0/100 ml Maximum · Median 0 · Comune di Ferno · Source [1]
Sulphate 9 mg/l 250 mg/l
4 %
Median · Comune di Ferno · Source [1]
Sodium 16 mg/l 200 mg/l
8 %
Median · Comune di Ferno · Source [1]

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

Show all recorded parameters (55 — most recent value per parameter)

Microbiology (2)

Microbiology – Comune di Ferno
Parameter Value Parametric value Share of the parametric value Reference
Escherichia coli (E. coli) 0 UFC/100ml 0/100 ml Maximum · Median 0 · Comune di Ferno · Source [1]
Intestinal enterococci 0 UFC/100ml 0/100 ml Maximum · Median 0 · Comune di Ferno · Source [1]

Chemical parameters (31)

Chemical parameters – Comune di Ferno
Parameter Value Parametric value Share of the parametric value Reference
1,2-dichloroethane < 0,9 µg/l
below limit of quantification
3 µg/l
< 30 % *
Maximum · Comune di Ferno · Source [1]
Alachlor < 0,01 µg/l
below limit of quantification
Maximum · Comune di Ferno · Source [1]
Antimony < 1 µg/l
below limit of quantification
10 µg/l
< 10 % *
Maximum · Comune di Ferno · Source [1]
Arsenic 2 µg/l 10 µg/l
20 %
Median · Comune di Ferno · Source [1]
Atrazine < 0,01 µg/l
below limit of quantification
Maximum · Comune di Ferno · Source [1]
Bentazone < 0,01 µg/l
below limit of quantification
Maximum · Comune di Ferno · Source [1]
Benzene < 0,3 µg/l
below limit of quantification
1 µg/l
< 30 % *
Maximum · Comune di Ferno · Source [1]
Boron < 0,3 mg/l
below limit of quantification
1.5 mg/l
< 20 % *
Maximum · Comune di Ferno · Source [1]
Bromodichloromethane 2 µg/l Maximum · Comune di Ferno · Source [1]
Cadmium < 1,0 µg/l
below limit of quantification
5 µg/l
< 20 % *
Maximum · Comune di Ferno · Source [1]
Chlorate < 0,05 mg/l
below limit of quantification
0,25 — bzw. 0,70 bei Desinfektion mit Chlordioxid Maximum · Comune di Ferno · Source [2]
Chlorite < 0,05 mg/l
below limit of quantification
0,25 — bzw. 0,70 bei Desinfektion mit Chlordioxid Maximum · Comune di Ferno · Source [2]
Chromium < 5 µg/l
below limit of quantification
50 µg/l
< 10 % *
Maximum · Comune di Ferno · Source [1]
Copper < 0,2 mg/l
below limit of quantification
2 mg/l
< 10 % *
Maximum · Comune di Ferno · Source [1]
Dibromochloromethane 2 µg/l Maximum · Comune di Ferno · Source [1]
Fluoride < 0,1 mg/l
below limit of quantification
1.5 mg/l
< 7 % *
Maximum · Comune di Ferno · Source [1]
Lead < 1 µg/l
below limit of quantification
10 µg/l
< 10 % *
Maximum · Comune di Ferno · Source [1]
Molinate < 0,01 µg/l
below limit of quantification
Maximum · Comune di Ferno · Source [1]
Nickel < 2 µg/l
below limit of quantification
20 µg/l
< 10 % *
Maximum · Comune di Ferno · Source [1]
Nitrate 8 mg/l 50 mg/l
16 %
Median · Comune di Ferno · Source [1]
Nitrite < 0,05 mg/l
below limit of quantification
0.5 mg/l
< 10 % *
Maximum · Comune di Ferno · Source [1]
Propazine < 0,01 µg/l
below limit of quantification
Maximum · Comune di Ferno · Source [1]
Selenium < 1 µg/l
below limit of quantification
20 µg/l
< 5 % *
Maximum · Comune di Ferno · Source [1]
Simazine < 0,01 µg/l
below limit of quantification
Maximum · Comune di Ferno · Source [1]
Terbuthylazine < 0,01 µg/l
below limit of quantification
Maximum · Comune di Ferno · Source [1]
Tetrachloroethene < 1 µg/l
below limit of quantification
Maximum · Comune di Ferno · Source [1]
Tetrachloroethene and Trichloroethene (sum) 1 µg/l 10 µg/l
10 %
Maximum · Comune di Ferno · Source [4]
Tribromomethane (bromoform) 2 µg/l Maximum · Comune di Ferno · Source [1]
Trichloroethene < 1 µg/l
below limit of quantification
Maximum · Comune di Ferno · Source [1]
Trichloromethane (chloroform) 2 µg/l Maximum · Comune di Ferno · Source [1]
Trihalomethanes — Total 2 µg/l 30 µg/l
7 %
Median · Comune di Ferno · Source [1]

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

PFAS (3)

PFAS – Comune di Ferno
Parameter Value Parametric value Share of the parametric value Reference
HFPO-DA (GenX) < 0,0010 µg/l
below limit of quantification
Maximum · Comune di Ferno · Source [4]
Perfluorodecane sulfonic acid (PFDS) < 0,0010 µg/l
below limit of quantification
Maximum · Comune di Ferno · Source [4]
Sum of 4 PFAS 0,0013 ug/l 20 ng/l
7 %
Maximum · Comune di Ferno · Source [4]

Indicator parameters (11)

Indicator parameters – Comune di Ferno
Parameter Value Parametric value Share of the parametric value Reference
Aluminium < 20 µg/l
below limit of quantification
0.2 mg/l
< 10 % *
Maximum · Comune di Ferno · Source [1]
Ammonium < 0,13 mg/l
below limit of quantification
0.5 mg/l
< 26 % *
Maximum · Comune di Ferno · Source [1]
Chloride 11 mg/l 250 mg/l
4 %
Median · Comune di Ferno · Source [1]
Coliform bacteria 0 UFC/100ml 0/100 ml Maximum · Median 0 · Comune di Ferno · Source [1]
Colony count 22 °C 0 UFC/1ml senza variazioni anomale Median · Comune di Ferno · Source [1]
Iron 11 µg/l 0.2 mg/l
5 %
Median · Comune di Ferno · Source [3]
Manganese 7 µg/l 50 µg/l
14 %
Median · Comune di Ferno · Source [3]
pH 7,3 pH_unit 6,5–9,5 Median · Comune di Ferno · Source [1]
Sodium 16 mg/l 200 mg/l
8 %
Median · Comune di Ferno · Source [1]
Sulphate 9 mg/l 250 mg/l
4 %
Median · Comune di Ferno · Source [1]
Turbidity 0,39 NTU accettabile per i consumatori, senza variazioni anomale Median · Comune di Ferno · Source [1]

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

Further parameters (8)

Further parameters – Comune di Ferno
Parameter Value Parametric value Share of the parametric value Reference
Barium < 2 mg/l
below limit of quantification
Maximum · Comune di Ferno · Source [1]
Calcium 38 mg/l Median · Comune di Ferno · Source [1]
Dry residue 222 mg/l Median · Comune di Ferno · Source [1]
Magnesium 9 mg/l Median · Comune di Ferno · Source [1]
Potassium 1 mg/l Median · Comune di Ferno · Source [1]
Total hardness 13,2 ° f Median · Comune di Ferno · Source [1]
Vanadium < 10 µg/l
below limit of quantification
0.14 mg/l
< 7 % *
Maximum · Comune di Ferno · Source [1]
Zinc 10 µg/l Median · Comune di Ferno · Source [4]

* Value below the limit of quantification: the actual share of the parametric value is not known; it lies somewhere below the stated upper bound. The marker shows where the limit of quantification of the measurement lies relative to the parametric value.

Values taken unchanged from the publications linked below — for each parameter the most recent recorded value. „—" in the parametric value column: no currently valid legal parametric value is stored in our database for this parameter; the parameter register with all parametric values is being expanded continuously.

Sources: [1] https://www.alfavarese.it/sites/default/files/public%3A//report_acqua/Dati%20I%20e%20II%20Trimestre%202025_RETE.xlsx · I Semestre 2025_RETE_Alfa · Campionamenti dal 13.02.2025 al 26.06.2025 · retrieved on 08/07/2026 [2] https://www.alfavarese.it/sites/default/files/public%3A//report_acqua/III%20Trimestre.xlsx · III Trimestre 2025_RETE_Alfa · Campionamenti dal 17.09.2025 al 17.09.2025 · retrieved on 08/07/2026 [3] https://www.alfavarese.it/sites/default/files/public%3A//report_acqua/I%20Trimestre.xlsx · Alfa - I trimestre 2026 · Campionamenti dal 02.02.2026 al 02.03.2026 · retrieved on 08/07/2026 [4] https://www.alfavarese.it/sites/default/files/public%3A//report_acqua/IV%20Trimestre.xlsx · IV Trimestre 2025_RETE_Alfa · Campionamenti dal 08.10.2025 al 17.11.2025 · retrieved on 08/07/2026

How to read the share of the parametric value

12 % Share of the parametric value. The proportion of the permitted maximum that the measured value uses — here 12 %, so just over an eighth.
< 10 % * Below the limit of quantification. The substance was not detectable. The mark shows where the detection limit lies relative to the parametric value — the actual share of the parametric value is below that.

Several samples per year: for chemical parameters the mean value is given, for microbiological ones the highest measured value. There the parametric value is zero — a single finding would disappear in the average, and it is precisely that finding which is the information. Which reference applies is stated in the last column of the table.

Legal basis: Art. 18 D.Lgs. 18/2023 as amended by D.Lgs. 102/2025 (transposition of EU Directive 2020/2184). The values are not official — the publication of the Gestore, to which every row links, remains authoritative. Assignment of the comune: information in the analysis document, resolved against the municipality list of ISTAT (territorial status 01.01.2026, CC BY 4.0).