IVAR treats all drinking water so that it will be safe and healthy to drink. The purification methods vary a little at the different water treatment plants.

IVAR currently owns and operates five waterworks and supplies drinking water to 11 owner municipalities. The IVAR Water Treatment Plant at Langevatn is the largest and supplies over 300 000 persons with drinking water. Krokaheia Waterworks is located in Strand municipality and is the primary supply to the Jørpeland — Tau area. Hjelmeland Waterworks supplies Hjelmeland municipality. Oltedal Waterworks supplies 800 persons in Oltedal, Dirdal Waterworks in Gjesdal supplies the Gilja and Dirdal areas.

At IVAR's largest water treatment plant at Langevatn, the purpose of the water treatment is first and foremost to reduce the corrosive properties of the raw water, as well as ensuring the hygienic quality.

The Drinking Water Regulation sets strict requirements concerning the quality of good drinking water. The water IVAR delivers meets these requirements.

IVAR treats all drinking water so that it will be safe and healthy to drink. The purification methods vary a little at the different water treatment plants.

IVAR currently owns and operates five waterworks and supplies drinking water to 11 owner municipalities. The IVAR Water Treatment Plant at Langevatn is the largest and supplies over 300 000 persons with drinking water. Krokaheia Waterworks is located in Strand municipality and is the primary supply to the Jørpeland — Tau area. Hjelmeland Waterworks supplies Hjelmeland municipality. Oltedal Waterworks supplies 800 persons in Oltedal, Dirdal Waterworks in Gjesdal supplies the Gilja and Dirdal areas.

At IVAR's largest water treatment plant at Langevatn, the purpose of the water treatment is first and foremost to reduce the corrosive properties of the raw water, as well as ensuring the hygienic quality.

The Drinking Water Regulation sets strict requirements concerning the quality of good drinking water. The water IVAR delivers meets these requirements.

Objective and scope:

Process chemicals will be procured for the operation of water treatment plants run by IVAR IKS. The process chemicals include:

• sodium hypochlorite15 % solution (chlorine);

• sodium hydroxide 50 % solution (lye);

• sodium sulphate in granules;

• iron chloride (PIX318);

• sodium silicate Krystazil 40 R17 and 40 R2.

Annual deliveries are estimated to be:

60 m3 15 % NaHl by tanker approx. three deliveries per year

3 m3 15 % NaHl in 1,000 L tanks approx. three deliveries per year

2 m3 Sodium silicate Krystazil 40 R17 in 1,000 L tank approx. two deliveries per year

6 m3 Sodium hydroxide 50 % by tanker approx. two deliveries per year

6 tonnes of Sodium sulphate granulate in large sacks 800 kg and the possibility of 25 kg sacks

35 m3 PIX 318 iron chloride sulphate

The quantities are estimated based on the existing consumption and anticipate future consumption in connection with the new water treatment plant at Langevatn. Regardless, the scope is variable due to the quality of the raw water. The estimated annual consumption is non binding for IVAR.