Table 1. Indicators of water quality in Tabriz comparing to East Azerbaijan Province .

Indicator	Tabriz City		Azerbaijan Province
	Total no.	In accordance with standard	Total no.	In accordance with standard
Microbial test	5378	5372
Chemical test	32	32
Heterotrophic Plate Count
Reservoir	411	407	4710	4698
Distribution network	2245	2239	9014	8938
Residual Chlorine	45864	44753
Turbidity	16776	16546	64201	58701