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In 2016, Italy had 3114 urban waste water agglomerations of more then 2 000 population equivalent (p.e). These agglomerations generated a total load of 77 150 067 p.e. 95% of this load is connected to collecting systems and 4% addressed through Individual and Appropriate Systems (storage or septic tanks, micro-stations,...). These agglomerations are connected to 151 primary treatment plant, 403 secondary treatment plants and 3335 more stringent treatment plants. All these treatment plants have a total design capacity of 102 326 996 p.e.

Agglomeration : Generated load by collection

Generated Load by collection type (population equivalent – p.e.)
See the data table
Generated Load by collection type (population equivalent – p.e.)
See diagram
Destination2016
Collected by collecting system73,178,106 pe, 94.9 %
Individual and Appropriate Systems3,406,522 pe, 4.4 %
Discharged without treatment565,439 pe, 0.7 %
Total77,150,067 pe, 100 %
*pe: Population equivalent, *%: Rate
Generated Load by sewage network type (population equivalent – p.e.)
See the data table
Generated Load by sewage network type (population equivalent – p.e.)
See diagram
Network type2016
Combine system23,834,921 pe
373 na
Separative and combine system20,410,559 pe
233 na
Separative system4,879,980 pe
125 na
No information28,024,607 pe
2,383 na
*pe: Population equivalent, *na: Number of agglomeration

Agglomeration : Generated load by compliance

Total generated load by compliance (population equivalent – p.e.)
See the data table
Total generated load by compliance (population equivalent – p.e.)
See diagram
Compliance state2016
Compliant36,724,723 pe
Not Compliant40,425,344 pe
Total77,150,067 pe
*pe: Population equivalent
Number of agglomerations by compliance
See the data table
Number of agglomerations by compliance
See diagram
Compliance state2016
Compliant1,926
Not Compliant1,188
Total3,114
*: Number of elements

Waste water treatment plant : Load entering by compliance

Total load entering by compliance (population equivalent – p.e.)
See the data table
Total load entering by compliance (population equivalent – p.e.)
See diagram
Compliance state2016
Compliant62,002,654 pe
Not Compliant8,676,916 pe
Not relevant269,043 pe
Total70,948,613 pe
*pe: Population equivalent
Number of treatment plant by compliance
See the data table
Number of treatment plant by compliance
See diagram
Compliance state2016
Compliant3,214
Not Compliant618
Not relevant57
Total3,889
*: Number of elements

Waste water treatment plant : Load entering by treatment type

Total load entering by treatment type (population equivalent – p.e.)
See the data table
Total load entering by treatment type (population equivalent – p.e.)
See diagram
Treatment type2016
More stringent treatment66,349,733 pe
Secondary treatment4,076,430 pe
Primary treatment522,450 pe
Total70,948,613 pe
*pe: Population equivalent
Number of treatment plant by treatment type
See the data table
Number of treatment plant by treatment type
See diagram
Treatment type2016
More stringent treatment3,335
Secondary treatment403
Primary treatment151
Total3,889
*: Number of elements

Agglomeration : generated load by agglomeration size

Total generated load by agglomeration size (population equivalent – p.e.)
See the data table
Total generated load by agglomeration size (population equivalent – p.e.)
See diagram
Size2016
< 10,000 pe9,204,456 pe
10,000 to 100,000 pe30,636,626 pe
> 100,000 pe37,308,985 pe
Total77,150,067 pe
*pe: Population equivalent
Number of agglomeration by size
See the data table
Number of agglomeration by size
See diagram
Size2016
< 10,000 pe1,974
10,000 to 100,000 pe1,007
> 100,000 pe133
Total3,114
*: Number of elements

Waste water treatment plant : Total load entering and discharged

Total load entering and discharged
See the data table
Total load entering and discharged
See diagram
2016
ParameterEnteringDischarged
BOD34,411,903,300.25 tons/year18,640,199,405.76 tons/year
COD65,597,418,057.89 tons/year15,585,577,793.33 tons/year
N28,353,836,705.80 tons/year31,900.07 tons/year
P19,445.40 tons/year22,715.28 tons/year
BOD, COD, N, P concentration
See the data table
BOD, COD, N, P concentration
See diagram
2016
ParameterEnteringDischarged
BOD477,460.01 mg/l258,629.98 mg/l
COD910,154.36 mg/l216,247.56 mg/l
N393,405.24 mg/l0.44 mg/l
P0.27 mg/l0.32 mg/l

MS Level statistics

Sludge destination
See the data table
In 2016, 564,768 Tons DS of sludge was generated
Sludge destination
See diagram
In 2016, 564,768 Tons DS of sludge was generated
Destination2016
Discharged into surface waters : Pipelines0.0
Discharged into surface waters : Ships0.0
Discharged into surface waters : Others0.0
Re-used: Soil and agriculture245,616.0
Re-used: Others124,573.0
Disposed: Landfill80,770.7
Disposed: Incineration27,720.4
Disposed: Others86,087.0
Missing0.9
Total564,768.0

Legal compliance

Legal compliance for collection in p.e.
See the data table
Legal compliance for collection in p.e.
See diagram
YearCompliantNot compliantNot relevant
201672,941,0574,209,010 -
Legal compliance for collection by number of agglomerations
See the data table
Legal compliance for collection by number of agglomerations
See diagram
YearCompliantNot compliantNot relevant
20162,860254 -
Legal compliance for 2nd treatment in p.e.
See the data table
Legal compliance for 2nd treatment in p.e.
See diagram
YearCompliantNot compliantNot relevant
201652,377,44320,505,094295,568
Legal compliance for 2nd treatment by number of agglomerations
See the data table
Legal compliance for 2nd treatment by number of agglomerations
See diagram
YearCompliantNot compliantNot relevant
20162,12192172
Legal compliance for 3rd treatment in p.e.
See the data table
Legal compliance for 3rd treatment in p.e.
See diagram
YearCompliantNot compliantNot relevant
201622,517,57211,592,41539,068,119
Legal compliance for 3rd treatment by number of agglomerations
See the data table
Legal compliance for 3rd treatment by number of agglomerations
See diagram
YearCompliantNot compliantNot relevant
20164481132,553