Table 1 Discharge and removal of phosphorus and nitrogen at municipal waste water treatment plants (wwtp), and estimated treatment efficiency. 1999

1	Discharge and removal of phosphorus and nitrogen at municipal waste water treatment plants (wwtp), and estimated treatment efficiency. 1999

	Discharge from wwtps (tonnes)		Removed from waste water (tonnes)		Treatment efficiency (per cent)

	Phosphorus	Nitrogen	Phosphorus	Nitrogen	Phosphorus	Nitrogen

Whole country (01-20)	836	13 494	1 848	4 306	69	24
North Sea counties (01-10)	120	6 942	1 574	3 268	93	32
Other counties (11-20)	717	6 553	275	1 038	26	14

01 Østfold	14	761	382	211	96	22
02/03 Akershus og Oslo	30	2 740	670	2 152	96	44
04 Hedmark	7	503	94	161	93	24
05 Oppland	5	496	85	202	94	29
06 Buskerud	9	602	103	191	92	24
07 Vestfold	14	655	89	108	86	14
08 Telemark	9	518	74	84	89	14
09 Aust-Agder	17	255	25	88	60	26
10 Vest-Agder	15	413	53	72	78	15
11 Rogaland	82	1 033	74	202	47	16
12 Hordaland	149	1 392	53	253	26	15
14 Sogn og Fjordane	40	313	7	43	15	12
15 Møre og Romsdal	105	832	25	83	19	9
16 Sør-Trøndelag	88	952	55	185	38	16
17 Nord-Trøndelag	44	405	27	81	38	17
18 Nordland	100	773	18	110	15	12
19 Troms	66	505	10	55	13	10
20 Finnmark	42	346	7	24	15	6

Source: Waste water treatment statistics, Statistics Norway.