Miljöbarometern
Totalfosfor analyseras för att få ett mått på graden av övergödning. Halterna avser årsmedianvärde.
Totalfosfor innefattar både fosfor som är direkt tillgänglig för växterna och fosfor som är bunden i organismer och mineraler.
Fosforkoncentration
| Rad-id | Mätområde | Datum | Värde (µg/l) |
|---|---|---|---|
|
0 |
Malmsjöns utlopp |
2011 |
17,0 |
|
1 |
Axån |
1993 |
91,0 |
|
2 |
Axån |
1994 |
75,0 |
|
3 |
Axån |
1995 |
70,0 |
|
4 |
Axån |
1996 |
100 |
|
5 |
Axån |
1997 |
70,0 |
|
6 |
Axån |
1998 |
100 |
|
7 |
Axån |
1999 |
97,0 |
|
8 |
Axån |
2000 |
65,0 |
|
9 |
Axån |
2001 |
83,0 |
|
10 |
Axån |
2002 |
63,0 |
|
11 |
Axån |
2003 |
51,0 |
|
12 |
Axån |
2004 |
76,0 |
|
13 |
Axån |
2005 |
91,0 |
|
14 |
Axån |
2006 |
64,0 |
|
15 |
Axån |
2007 |
93,0 |
|
16 |
Axån |
2008 |
74,0 |
|
17 |
Axån |
2009 |
57,0 |
|
18 |
Axån |
2010 |
45,0 |
|
19 |
Axån |
2011 |
45,0 |
|
20 |
Axån |
2012 |
43,0 |
|
21 |
Axån |
2013 |
37,0 |
|
22 |
Axån |
2014 |
46,0 |
|
23 |
Axån |
2015 |
43,0 |
|
24 |
Axån |
2016 |
46,0 |
|
25 |
Axån |
2017 |
61,0 |
|
26 |
Axån |
2018 |
44,0 |
|
27 |
Axån |
2019 |
54,0 |
|
28 |
Axån |
2020 |
49,0 |
|
29 |
Axån |
2021 |
46,0 |
|
30 |
Axån |
2022 |
69,0 |
|
31 |
Axån |
2023 |
69,0 |
|
32 |
Axån |
2024 |
49,0 |
|
33 |
Axån |
2025 |
74,0 |
|
34 |
Brinkbäcken |
1993 |
40,0 |
|
35 |
Brinkbäcken |
1994 |
39,0 |
|
36 |
Brinkbäcken |
1995 |
56,0 |
|
37 |
Brinkbäcken |
1996 |
38,0 |
|
38 |
Brinkbäcken |
1997 |
47,0 |
|
39 |
Brinkbäcken |
1998 |
40,0 |
|
40 |
Brinkbäcken |
1999 |
49,0 |
|
41 |
Brinkbäcken |
2000 |
41,0 |
|
42 |
Brinkbäcken |
2001 |
50,0 |
|
43 |
Brinkbäcken |
2002 |
48,0 |
|
44 |
Brinkbäcken |
2003 |
65,0 |
|
45 |
Brinkbäcken |
2004 |
72,0 |
|
46 |
Brinkbäcken |
2005 |
57,0 |
|
47 |
Brinkbäcken |
2006 |
66,0 |
|
48 |
Brinkbäcken |
2007 |
67,0 |
|
49 |
Brinkbäcken |
2008 |
62,0 |
|
50 |
Brinkbäcken |
2009 |
69,0 |
|
51 |
Brinkbäcken |
2010 |
64,0 |
|
52 |
Brinkbäcken |
2011 |
73,0 |
|
53 |
Brinkbäcken |
2012 |
54,0 |
|
54 |
Brinkbäcken |
2013 |
51,0 |
|
55 |
Brinkbäcken |
2014 |
64,0 |
|
56 |
Brinkbäcken |
2015 |
50,0 |
|
57 |
Brinkbäcken |
2016 |
50,0 |
|
58 |
Brinkbäcken |
2017 |
52,0 |
|
59 |
Brinkbäcken |
2018 |
55,0 |
|
60 |
Brinkbäcken |
2019 |
61,0 |
|
61 |
Brinkbäcken |
2020 |
55,0 |
|
62 |
Brinkbäcken |
2021 |
71,0 |
|
63 |
Brinkbäcken |
2022 |
50,0 |
|
64 |
Brinkbäcken |
2023 |
52,0 |
|
65 |
Brinkbäcken |
2024 |
47,0 |
|
66 |
Brinkbäcken |
2025 |
41,0 |
|
67 |
Kagghamraån |
1993 |
49,0 |
|
68 |
Kagghamraån |
1994 |
48,0 |
|
69 |
Kagghamraån |
1995 |
50,0 |
|
70 |
Kagghamraån |
1996 |
45,0 |
|
71 |
Kagghamraån |
1997 |
46,0 |
|
72 |
Kagghamraån |
1998 |
52,0 |
|
73 |
Kagghamraån |
1999 |
48,0 |
|
74 |
Kagghamraån |
2000 |
43,0 |
|
75 |
Kagghamraån |
2001 |
51,0 |
|
76 |
Kagghamraån |
2002 |
50,0 |
|
77 |
Kagghamraån |
2003 |
65,0 |
|
78 |
Kagghamraån |
2004 |
51,0 |
|
79 |
Kagghamraån |
2005 |
51,0 |
|
80 |
Kagghamraån |
2006 |
49,0 |
|
81 |
Kagghamraån |
2007 |
47,0 |
|
82 |
Kagghamraån |
2008 |
47,0 |
|
83 |
Kagghamraån |
2009 |
51,0 |
|
84 |
Kagghamraån |
2010 |
49,0 |
|
85 |
Kagghamraån |
2011 |
47,0 |
|
86 |
Kagghamraån |
2012 |
44,0 |
|
87 |
Kagghamraån |
2013 |
44,0 |
|
88 |
Kagghamraån |
2014 |
55,0 |
|
89 |
Kagghamraån |
2015 |
45,0 |
|
90 |
Kagghamraån |
2016 |
52,0 |
|
91 |
Kagghamraån |
2017 |
48,0 |
|
92 |
Kagghamraån |
2018 |
40,0 |
|
93 |
Kagghamraån |
2019 |
46,0 |
|
94 |
Kagghamraån |
2020 |
38,0 |
|
95 |
Kagghamraån |
2021 |
46,0 |
|
96 |
Kagghamraån |
2022 |
50,0 |
|
97 |
Kagghamraån |
2023 |
45,0 |
|
98 |
Kagghamraån |
2024 |
41,0 |
|
99 |
Kagghamraån |
2025 |
41,0 |
|
100 |
Norrgaån |
1993 |
43,0 |
|
101 |
Norrgaån |
1994 |
36,0 |
|
102 |
Norrgaån |
1995 |
33,0 |
|
103 |
Norrgaån |
1996 |
40,0 |
|
104 |
Norrgaån |
1997 |
27,0 |
|
105 |
Norrgaån |
1998 |
36,0 |
|
106 |
Norrgaån |
1999 |
40,0 |
|
107 |
Norrgaån |
2000 |
40,0 |
|
108 |
Norrgaån |
2001 |
46,0 |
|
109 |
Norrgaån |
2002 |
29,0 |
|
110 |
Norrgaån |
2003 |
35,0 |
|
111 |
Norrgaån |
2004 |
50,0 |
|
112 |
Norrgaån |
2005 |
38,0 |
|
113 |
Norrgaån |
2006 |
48,0 |
|
114 |
Norrgaån |
2007 |
48,0 |
|
115 |
Norrgaån |
2008 |
39,0 |
|
116 |
Norrgaån |
2009 |
40,0 |
|
117 |
Norrgaån |
2010 |
48,0 |
|
118 |
Norrgaån |
2011 |
39,0 |
|
119 |
Norrgaån |
2012 |
40,0 |
|
120 |
Norrgaån |
2013 |
38,0 |
|
121 |
Norrgaån |
2014 |
37,0 |
|
122 |
Norrgaån |
2015 |
40,0 |
|
123 |
Norrgaån |
2016 |
47,0 |
|
124 |
Norrgaån |
2017 |
44,0 |
|
125 |
Norrgaån |
2018 |
51,0 |
|
126 |
Norrgaån |
2019 |
40,0 |
|
127 |
Norrgaån |
2020 |
35,0 |
|
128 |
Norrgaån |
2021 |
41,0 |
|
129 |
Norrgaån |
2022 |
43,0 |
|
130 |
Norrgaån |
2023 |
41,0 |
|
131 |
Norrgaån |
2024 |
41,0 |
|
132 |
Norrgaån |
2025 |
51,0 |
|
133 |
Snäckstaviksbäcken |
2012 |
106 |
|
134 |
Snäckstaviksbäcken |
2014 |
121 |
|
135 |
Snäckstaviksbäcken |
2015 |
137 |
|
136 |
Snäckstaviksbäcken |
2016 |
138 |
|
137 |
Snäckstaviksbäcken |
2017 |
129 |
|
138 |
Snäckstaviksbäcken |
2018 |
115 |
|
139 |
Snäckstaviksbäcken |
2019 |
112 |
|
140 |
Snäckstaviksbäcken |
2020 |
86,0 |
|
141 |
Snäckstaviksbäcken |
2021 |
99,0 |
|
142 |
Snäckstaviksbäcken |
2022 |
90,0 |
|
143 |
Snäckstaviksbäcken |
2023 |
81,0 |
|
144 |
Snäckstaviksbäcken |
2024 |
76,0 |
|
145 |
Snäckstaviksbäcken |
2025 |
86,0 |
|
146 |
Tumbaån |
1997 |
62,0 |
|
147 |
Tumbaån |
1998 |
45,0 |
|
148 |
Tumbaån |
1999 |
42,0 |
|
149 |
Tumbaån |
2000 |
51,0 |
|
150 |
Tumbaån |
2001 |
60,0 |
|
151 |
Tumbaån |
2002 |
20,0 |
|
152 |
Tumbaån |
2003 |
13,0 |
|
153 |
Tumbaån |
2004 |
33,0 |
|
154 |
Tumbaån |
2005 |
32,0 |
|
155 |
Tumbaån |
2006 |
24,0 |
|
156 |
Tumbaån |
2007 |
28,0 |
|
157 |
Tumbaån |
2008 |
22,0 |
|
158 |
Tumbaån |
2009 |
32,0 |
|
159 |
Tumbaån |
2010 |
35,0 |
|
160 |
Tumbaån |
2011 |
25,0 |
|
161 |
Tumbaån |
2012 |
46,0 |
|
162 |
Tumbaån |
2013 |
43,0 |
|
163 |
Tumbaån |
2014 |
35,0 |
|
164 |
Tumbaån |
2016 |
32,0 |
|
165 |
Tumbaån |
2017 |
29,0 |
|
166 |
Tumbaån |
2018 |
34,0 |
|
167 |
Tumbaån |
2019 |
39,0 |
|
168 |
Tumbaån |
2020 |
40,0 |
|
169 |
Tumbaån |
2021 |
38,0 |
|
170 |
Tumbaån |
2022 |
38,0 |
|
171 |
Tumbaån |
2023 |
46,0 |
|
172 |
Tumbaån |
2024 |
36,0 |
|
173 |
Tumbaån |
2025 |
32,0 |
|
174 |
Uringeån |
1993 |
24,0 |
|
175 |
Uringeån |
1994 |
26,0 |
|
176 |
Uringeån |
1995 |
28,0 |
|
177 |
Uringeån |
1996 |
31,0 |
|
178 |
Uringeån |
1997 |
35,0 |
|
179 |
Uringeån |
1998 |
24,0 |
|
180 |
Uringeån |
1999 |
25,0 |
|
181 |
Uringeån |
2000 |
27,0 |
|
182 |
Uringeån |
2001 |
46,0 |
|
183 |
Uringeån |
2002 |
49,0 |
|
184 |
Uringeån |
2003 |
54,0 |
|
185 |
Uringeån |
2004 |
60,0 |
|
186 |
Uringeån |
2005 |
33,0 |
|
187 |
Uringeån |
2006 |
44,0 |
|
188 |
Uringeån |
2007 |
44,0 |
|
189 |
Uringeån |
2008 |
41,0 |
|
190 |
Uringeån |
2009 |
44,0 |
|
191 |
Uringeån |
2010 |
35,0 |
|
192 |
Uringeån |
2011 |
56,0 |
|
193 |
Uringeån |
2012 |
37,0 |
|
194 |
Uringeån |
2013 |
58,0 |
|
195 |
Uringeån |
2014 |
64,0 |
|
196 |
Uringeån |
2015 |
33,0 |
|
197 |
Uringeån |
2016 |
44,0 |
|
198 |
Uringeån |
2017 |
30,0 |
|
199 |
Uringeån |
2018 |
35,0 |
|
200 |
Uringeån |
2019 |
41,0 |
|
201 |
Uringeån |
2020 |
32,0 |
|
202 |
Uringeån |
2021 |
38,0 |
|
203 |
Uringeån |
2022 |
29,0 |
|
204 |
Uringeån |
2023 |
31,0 |
|
205 |
Uringeån |
2024 |
26,0 |
|
206 |
Uringeån |
2025 |
26,0 |
|
207 |
Älvestaån |
1999 |
132 |
|
208 |
Älvestaån |
2000 |
81,0 |
|
209 |
Älvestaån |
2001 |
102 |
|
210 |
Älvestaån |
2002 |
110 |
|
211 |
Älvestaån |
2003 |
107 |
|
212 |
Älvestaån |
2004 |
92,0 |
|
213 |
Älvestaån |
2005 |
85,0 |
|
214 |
Älvestaån |
2006 |
85,0 |
|
215 |
Älvestaån |
2007 |
85,0 |
|
216 |
Älvestaån |
2008 |
99,0 |
|
217 |
Älvestaån |
2009 |
112 |
|
218 |
Älvestaån |
2010 |
102 |
|
219 |
Älvestaån |
2011 |
87,0 |
|
220 |
Älvestaån |
2012 |
69,0 |
|
221 |
Älvestaån |
2013 |
81,0 |
|
222 |
Älvestaån |
2014 |
93,0 |
|
223 |
Älvestaån |
2015 |
93,0 |
|
224 |
Älvestaån |
2016 |
97,0 |
|
225 |
Älvestaån |
2017 |
93,0 |
|
226 |
Älvestaån |
2018 |
100 |
|
227 |
Älvestaån |
2019 |
101 |
|
228 |
Älvestaån |
2020 |
105 |
|
229 |
Älvestaån |
2021 |
55,0 |
|
230 |
Älvestaån |
2022 |
77,0 |
|
231 |
Älvestaån |
2023 |
57,0 |
|
232 |
Älvestaån |
2024 |
51,0 |
|
233 |
Älvestaån |
2025 |
69,0 |
Datakälla: Botkyrka kommun
Kommentar
Hittills under 2000-talet har fosforhalterna i Tumbaån samt Älvestaån varierat utan tydlig tendens. Fosforhalterna i Malmsjöns utlopp har minskat medan halterna i Kagghamraåns mynning har en svagt minskande tendens.