Graphs for national stats

In 2018, Italy had 3034 urban waste water agglomerations of more then 2 000 population equivalent (p.e). These agglomerations generated a total load of 78 024 142 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 120 primary treatment plant, 395 secondary treatment plants and 3176 more stringent treatment plants. All these treatment plants have a total design capacity of 101 855 779 p.e.

Agglomeration : Generated load by collection

Generated Load by collection type (population equivalent – p.e.)

Generated Load by collection type (population equivalent – p.e.)

Destination	2018
Collected by collecting system	74,396,560 pe, 95.4 %
Individual and Appropriate Systems	3,053,790 pe, 3.9 %
Discharged without treatment	573,727 pe, 0.7 %
Total	78,024,077 pe, 100 %

pe: Population equivalent, %: Rate

Generated Load by sewage network type (population equivalent – p.e.)

Network type	2018
Separative and combine system	19,930,909 pe 316 na
No information	25,234,104 pe 2,162 na
Combine system	27,927,322 pe 427 na
Separative system	4,931,807 pe 129 na

pe: Population equivalent, na: Number of agglomerations

Agglomeration : Generated load by compliance

Total generated load by compliance (population equivalent – p.e.)

Compliance state	2018
Compliant	43,987,893 pe
Not Compliant	34,036,249 pe
Total	78,024,142 pe

*pe: Population equivalent

Number of agglomerations by compliance

Compliance state	2018
Compliant	2,055
Not Compliant	979
Total	3,034

*: Number of elements

Waste water treatment plant : Load entering by compliance

Total load entering by compliance (population equivalent – p.e.)

Compliance state	2018
Not connected	425,914 pe
Not Compliant	7,514,621 pe
Not relevant	354,862 pe
Compliant	62,418,555 pe
Total	70,713,952 pe

*pe: Population equivalent

Number of treatment plants by compliance

Compliance state	2018
Not connected	1,574
Not Compliant	505
Not relevant	56
Compliant	3,130
Total	5,265

*: Number of elements

Waste water treatment plant : Load entering by treatment type

Total load entering by treatment type (population equivalent – p.e.)

Treatment type	2018
Secondary treatment	4,258,714 pe
Primary treatment	402,863 pe
Not connected	282,742 pe
More stringent treatment	65,769,633 pe
Total	70,713,952 pe

*pe: Population equivalent

Number of treatment plants by treatment type

Treatment type	2018
Secondary treatment	396
Primary treatment	533
Not connected	1,083
More stringent treatment	3,253
Total	5,265

*: Number of elements

Agglomeration : generated load by agglomeration size

Total generated load by agglomeration size (population equivalent – p.e.)

Size	2018
< 10,000 pe	8,878,074 pe
10,000 to 100,000 pe	29,852,743 pe
> 100,000 pe	39,293,325 pe
Total	78,024,142 pe

*pe: Population equivalent

Number of agglomerations by size

Size	2018
< 10,000 pe	1,920
10,000 to 100,000 pe	978
> 100,000 pe	136
Total	3,034

*: Number of elements

Waste water treatment plant : Total load entering and discharged

Total load entering and discharged

	2018
Parameter	Entering	Discharged
BOD	556,936.21 tons/year	27,698.24 tons/year
COD	1,171,972.20 tons/year	98,098.57 tons/year
N	117,503.88 tons/year	21,046.11 tons/year
P	505,711.25 tons/year	9,646.68 tons/year

BOD, COD, N, P concentration

	2018
Parameter	Entering	Discharged
BOD	7.72 mg/l	0.38 mg/l
COD	16.24 mg/l	1.36 mg/l
N	1.63 mg/l	0.29 mg/l
P	7.01 mg/l	0.13 mg/l

MS Level statistics

Sludge destination

In 2018, 387,289 Tons DS of sludge was generated

Sludge destination

In 2018, 387,289 Tons DS of sludge was generated

Destination	2018
Discharged into surface waters : Pipelines	0.0
Discharged into surface waters : Ships	0.0
Discharged into surface waters : Others	0.0
Re-used: Soil and agriculture	92,705.2
Re-used: Others	121,953.2
Disposed: Landfill	44,080.6
Disposed: Incineration	49,209.0
Disposed: Others	79,340.6
Missing	0.0
Total	387,288.6

Data on wastewater reuse percentage are available only for a few regions (not at national level) and vary from 0.28% to 5%. Wastewater is mainly reused in agriculture and for environmental purposes (e.g. improvement of water bodies qualitative status).

Legal compliance

Legal compliance for collection in p.e.

Year	Compliant	Not compliant	Not relevant
2018	74,134,130	3,890,012	-

Legal compliance for collection by number of agglomerations

Year	Compliant	Not compliant	Not relevant
2018	2,821	213	-

Legal compliance for 2nd treatment in p.e.

Year	Compliant	Not compliant	Not relevant
2018	59,958,743	14,696,304	294,811

Legal compliance for 2nd treatment by number of agglomerations

Year	Compliant	Not compliant	Not relevant
2018	2,245	716	73

Legal compliance for 3rd treatment in p.e.

Year	Compliant	Not compliant	Not relevant
2018	29,271,365	6,002,659	39,132,169

Legal compliance for 3rd treatment by number of agglomerations

Year	Compliant	Not compliant	Not relevant
2018	475	75	2,484

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