Table 2.

Levels of Ammonia Nitrogen (mg/L) in Water from Different Sources

	‘88 Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	‘89 Jan.	Feb.	Mar.	Apr.	May.
Water plant A	0.4	0.1	0.2	0.4	0.4	0.4	0.4	0.4	0.4	0.2	0.4	0.3
Water plant B	–	0.01	–	–	0.01	–	–	–	–	–	–	–

^–:undetectable