Faq: see the answers to the most frequently questions

In this section you can find the answers to the most frequently questions

Why is it necessary to build new wastewater collection and treatment plants in Garda?

The current system is not able to meet the needs of about 200 thousand equivalent inhabitants. Therefore, a structural intervention is necessary to solve the under-dimensioning

How are the works progressing on the Veronese shore?

The tendering procedure for the first lot of the collection works is underway.

Is the condition of the sublacustrine piping compatible with the construction schedule for a new water treatment plant?

The monitoring and maintenance programs must guarantee the efficient state of the pipelines until they are decommissioned.

What are the costs of maintaining the sublacual pipelines each year?

In the last 4 years, there have been 2 maintenance operations worth 2 million each. In total, about 4 million euros have been spent in 4 years.

Why is the new sewage treatment plant a priority when the Garda system has not yet separated black water from white water?

From an economic and technical point of view, 100% separation of black and white water is unfeasible: it would cost hundreds of millions of euros and would require invasive interventions, with no guarantee of effectiveness in historic centers and private homes. Moreover, the regulations require purification treatment even for first rain water. 

How is it possible to deal with the issue of purification of the Garda without having concluded the ongoing study on the functioning of the sewerage system?

The two projects have different objectives: the new collection and purification system is aimed at adjusting its capacity with respect to the equivalent inhabitants, while the modeling study of the sewer network aims to remedy the local criticalities of the networks, for example the reduction of the presence of parasite water.

Why is it not possible to reuse disused quarries as lamination basins for agricultural purposes?

The use of quarries using natural watercourses is a solution that would produce agricultural benefits. Storing treated water in quarries would be equivalent to discharging it to the ground.

Why is it not possible to deal with the purification of Lake Garda as a unicum, and not with three different solutions depending on the Region?

Addressing these issues with a global and not sectorial approach has been a criterion with which we have been working since the first studies in 2007. The same program agreement of 2017 sees Lombardy and Veneto together.

Is the status of the Chiese compatible with the discharge of purified water?

The Ministry of the Environment has declared the discharge into the Chiese compatible with its environmental status. It also pointed out that the Chiese would benefit from the resolution of current deficiencies in collection and purification and from the irrigation reuse of purified water.

Why have no design alternatives been identified other than Peschiera with discharge into the Mincio River?

The increasing urbanization of the territory, the presence of complex interferences (freeway, TAV, railway) and the numerous lifts necessary for the correct functioning of the collectors make it technically very complex, as well as economically burdensome, to transport all the wastewater collected on the Brescia side of Lake Garda to the Mincio. 

Why can't the capacity of the Peschiera plant be increased, despite the fact that Acque Bresciane has a capital share?

The solution had been evaluated in the first feasibility analysis in 2019 and had been excluded because it generates additional costs of about 50 million euros. 

Why was the Lonato hypothesis not already identified in the 2019 feasibility analysis?

The Lonato solution had not been included in the feasibility study because it was very similar to the one involving a single facility in Montichiari. In addition, the Monitichiari solution was more advantageous because it would have been built in an area already dedicated to a functioning technological plant.

Could Lonato be a possible location even though it would be self-sufficient?

Currently, part of Lonato's wastewater is collected in Peschiera, and the Veronese project no longer provides for this. Moreover, the existing plants are obsolete and malfunctioning and will have to be decommissioned. 

Why is it technically unsustainable to foresee a collector route passing through the morainic ridges?

The only management costs of additional electricity would be 30% higher than those of the proposed alternative solutions.

Which criticalities/urban planning constraints must be taken into account when evaluating possible locations?

Which criticalities/urban planning constraints must be taken into account when evaluating possible locations?It is necessary to evaluate the compatibility of the use of the areas identified. It is also necessary to consider whether the new planned collectors will interfere with the infrastructures already present (e.g. railway networks, roads, sewers or aqueducts, etc.).

Why was it chosen to adopt a criterion related to the size of the plants?

The regional legislation on plant flexibility considers a purification scheme to be more efficient from a technical and operational point of view, the more the number of plants spread over the territory is reduced and the more the purification capacity (potential) of individual plants is high.

Why will Desenzano and Sirmione continue to discharge into Peschiera?

From a technical and economic point of view, it is the most advantageous solution. Once the planned interventions on the Brescia side of the river have been completed, the size of the current collection scheme in Peschiera will be suitable to continue to receive the wastewater from Desenzano and Sirmione.

What advantages and disadvantages would the expansion of the Peschiera plant entail?

The technical-economic feasibility project of 2019 shows that Peschiera is a viable solution but overall disadvantageous compared to the other hypotheses evaluated. Its main strength lies in its proximity to a suitable receiving body, the Mincio River. However, to be realized, this solution would entail costs of up to 50 million euros higher than the Montichiari alternative.

Why were criteria introduced for evaluating alternatives not provided for in the Regional Regulations?

The regional regulation provides an indication of the criteria to be adopted for the evaluation of alternatives, but also suggests contextualizing the analysis with respect to the different situations, providing, if necessary, further elements of comparison

Do we want to discharge Garda wastewater in other territories in order not to degrade those "renowned" areas to the detriment of other territories?

The Ministry of Environment has included among the criteria for the release of the contribution of 100 million euros for the construction of the work the maximum protection of the Garda basin. The protection of the natural, environmental, social, cultural, economic and touristic value of the lake will not be at the expense of neighboring territories, equally rich in value. The new collection and purification scheme will also produce environmental benefits for the Chiese, such as the resolution of current deficiencies in collection and purification and the irrigation reuse of purified water. 

What threshold defines a 'safe discharge'?

There is a specific regional regulation on discharge limits to protect the environment. Lombardy's is the most restrictive in Italy.

What chemicals would the purified water carry?

The purification process does not involve the use of chemicals. High and frequent controls on the quality of purified water before it is returned to the environment guarantee its safety.

Who will check the quality of the purified water?

The plant operator constantly monitors the quality of the purified water. In addition, ARPAL guarantees ordinary and extraordinary third-party controls, with a frequency established by regional regulations according to the size of the plant.

Can purified water be reused in agriculture?

Both solutions make it possible to reuse almost 30% of the purified water for irrigation purposes, covering around 2,000 hectares of cultivated land.

Could the purified water pollute the water table?

There is no contact between the water table and the sewage treatment plant discharge.

Does AB's project include spillways at the lake?

One of the objectives of the project is to reduce the impact of discharges on the lake spillways thanks to the capacity of the new collection scheme.

Does the project include measures to combat illegal discharges into the lake?

Acque Bresciane undertakes to identify and collect all present discharges, whether legitimate or unauthorised, including industrial discharges, and to carry out adequate collection and purification of the areas currently lacking, as indicated in the prescriptions of the Ministry of the Environment.

Where will the new facilities be built?

Alternative design solutions must meet three criteria: no discharge to the lake, compatibility with the morphology of the area and compatibility with the location of the final receptor bodies.

Why cannot the plants be built in the municipalities bordering the lake (from S. Felice to Desenzano)?

Since it is not possible to discharge into the lake, it would cost 30% more each year to transport waste water from the municipalities facing the lake to the Chiese, beyond the moraine hills. The most sustainable passages are at Tormini and Lonato.

Has the Mincio been considered as a possible receptor?

Discharging purified water into the Mincio was considered possible in the Peschiera solution and too complex for the morphology of the territory in the Lonato solution.

How much is the total investment worth?

The total investment to adapt the entire Garda water collection and purification system is worth about 230 million euro. The work planned on the Brescia side is worth about 130 million euro.

What impact will the investment have on utility bills?

The impact of the project on utility bills can be considered marginal. Thanks to the 50% contribution to the total cost of the work granted by the Ministry of the Environment, the residual investment by the operator amounts to approximately 65 million euros - a figure that can be fully integrated into the one billion investments on a provincial scale planned by Acque Bresciane in its 2045 Business Plan.

How do you plan to minimise the impact of the construction sites on the road network, for residents and tourists?

The final project will include an in-depth plan to minimise the impact of construction work, for example by defining specific construction methods, giving priority to night work where possible, and suspending work during the tourist season. These and other solutions will be carefully assessed with the municipalities directly affected by the works.

Why is there no timetable for the construction of the new installations?

The feasibility study contains rough time estimates for the decommissioning of the sublacustrine pipelines (8 years for Lonato and 5 years for Gavardo and Montichiari). A more precise timetable will only be possible with the final project.

Is it better to have one medium-sized water purifier or many small ones?

According to the regulations in force in Lombardy, the larger the plant, the more restrictive the quality requirements for the purified water.

If the water purification plant were to be disrupted by particular weather conditions or abnormal pollutant discharges, would the effluent end up in the receptor without being purified?

To cope with particular meteorological events, the project envisages the construction of a lamination tank at the head of each plant. to extend the safety margins for high flows. On the other hand, as regards possible anomalous pollutants, the sizing of more than 100,000 AE makes it possible to treat this type of anomaly without compromising the quality of the discharges themselves.

Are there plans to mitigate the environmental impact?

Yes, mitigation measures are envisaged: minimisation of odours and noise, particular attention to integration into the existing landscape, attention to biodiversity with definition of the ecological value of the site before/after the intervention, zero carbon emission plant, use of eco-sustainable and recycled materials, energy balancing, reduction and optimisation of the use of energy sources.

What are the stages of the authorisation process for this type of work?

The authorisation process provides for the convening of a preliminary Services Conference, which will lead to the drafting of a final project, to be submitted for environmental impact assessment as part of the single regional authorisation measure. The results will be the subject of a decisive Services Conference, which will lead to the declaration of public utility and the drafting of the executive project. 

What criteria were used to select the University of Brescia as scientific advisor?

The University of Brescia was chosen because the DICATAM department, which was responsible for drafting the study, had previously been involved as a consultant by the Lombardy Region for the drafting of Regulation 06/2019, in particular with regard to the definition of the evaluation criteria for the choice of alternatives (Annex L).

Will municipalities and citizens have the opportunity to express their position in official fora?

The municipalities will be involved during the assessment and approval process of the project both in the preliminary and decisional services conference and in the Environmental Impact Assessment (EIA) procedure. Current legislation does not provide for the direct involvement of citizens in the process.

Why wasn't a path shared from the beginning with the territories involved?

The regulatory procedure was followed, which stipulates that the territories should only be involved once the preliminary services conference has been launched.

Why was there no provision for involving mayors in the famous 'steering committee'?

The Steering Committee was set up by the Ministry of the Environment according to the relevant rules. The decision on which participants to involve is therefore not the responsibility of the operator.

Will other non-public companies be involved in the construction and management of the facility(s)?

The Gavardo-Montichiari solution foresees the involvement of A2A since the Montichiari purification plant is under its jurisdiction.

What was the outcome of the technical round table convened by the Ministry in 2020?

The technical round table concluded with a Ministerial report declaring the compatibility of the Chiese as a receptor body and indicating a number of prescriptions, including the re-use of water in agriculture, the application of more restrictive limits and controls on substances wider than those provided for by the standards, the minimisation of odours and noise from the plant, the accurate environmental integration of the buildings, the reduction of the impact of the flood spillways, the identification and collection of all drains in the basin.