The integrated water supply development program comprises rehabilitation of existing facilities and construction of new ones

In order to ensure reliable drinking water supply and to guarantee compliance of drinking water quality with regulatory requirements, rehabilitation of four major water treatment plants with construction of new water treatment blocks at Main WTP, Northern WTP, Southern WTP and Kolpino WTP is planned.

It is planned to build two new WTPs in Molodezhnoye and Dyuny (“Rzhavaya kanava”) to supply water to the customers of Kurortny district from local groundwater sources.

Establishment of St. Petersburg Water Supply Management System

The main purpose of the project is to establish a reliable and efficient water supply system, monitor the operation of the water supply network, rational use of resources and cost savings.

Water metering system will be introduced for each water supply zone, and commercial water metering units for all customers will be upgraded to provide automatic data transmission. This will allow to get real-time information about the water consumption of customers and about volumes of water supplied to the water supply zone. It will enable to perform on-line monitoring of the failure of metering devices or possible interference of the customer in the operation of the meter, to analyze automatically the condition of the network and flow dynamics, as well as to identify leakages in water supply network.

As part of the project, an integrated modernization of booster pumping stations with replacement of pumping units will be performed, a frequency control system for pressure control will be introduced, and the pump control system using pressure data in the network checkpoints will be implemented.

A pilot project for the implementation of such a system was implemented in St. Petersburg in 2008 in the area of Uritskaya pumping station.

The project currently covers the southern part of the city (the Southern Water Supply Zone). The project area is 195 square kilometers with about 1 million 300 thousand inhabitants. It includes five city districts - Frunzensky, Moskovsky and a part of Kirovsky, Krasnoselsky, and the left-bank part of Nevsky district. The following activities were carried out to implement the project:

• replacement of power equipment with energy-saving and energy-efficient equipment;
• installation and commissioning of water metering devices equipped with collection and transmission of data on the customers’ water consumption;
• installation and commissioning of flow meters in the network and at the pumping stations;
• installation and commissioning of pressure sensors in the water distribution network;
• installation and commissioning of water turbidity control devices at the inlets of the booster pumping stations and at the customers’ water metering units;
• establishment of NemoAkva information system, including introduction of the software system for measuring and recording water consumption in the Southern Water Supply Zone of St. Petersburg, integration of the data water supply, water consumption and pressure at the facilities into NemoAkva information system.

The establishment of the automated water supply management system in the southern districts of the city in 2018 ensured a 28% reduction in energy consumption. The number of failures at the water supply network decreased by 61%. Moreover, the water losses at the distribution system went down by 58%.

Today, SUE “Vodokanal of St. Petersburg” carries on its work on the establishment of the water supply management system in the territory of the Northern and Central Water Supply Zones.

In 2018, replacement of pumping units at Murinskaya water pumping station and Kushelevskaya water pumping station in the Northern Water Supply Zone was completed. Vodokanal finalized the reconstruction of Petrogradskaya booster pumping station in the Central Water Supply Zone.

In the future, the company plans to implement the water supply management system throughout the territory of St. Petersburg.

Reconstruction of water networks and replacement of valves

In order to reduce the breakdown rate of water networks and provide reliable water supply service to the customers, 200-250 km of networks should be rehabilitated, constructed or repaired annually.

 Great importance is attached to the replacement of valves and fire hydrants. Over 92,000 valves (including 27,000 directly buried valves) and over 24,000 fire hydrants (including 6 up-to-date hydrants) were installed in the water network.

Vodokanal replaces all valves and fire hydrants in the water networks with the advanced directly buried valves and hydrants. Replacement of valves ensures reliable operation of the network, reduction of customers’ disconnections during the scheduled maintenance or emergency repairs from 8 to 2 disconnections on the average. Replacement of fire hydrants will ensure their better performance and will improve reliability of fire extinguishing. Furthermore, installation of directly buried valves and fire hydrants will reduce the operating and maintenance costs and ensure safety of maintenance works carried by line crews