Seaview Odour Neutraliser Trial Shutdown
Following feedback from the community regarding the odour neutralisers at the Seaview Wastewater Treatment Plant, a trial shutdown was completed from Wednesday 4th December, to Wednesday 18th December. Community feedback was collected throughout this period, and continued to be collected for two weeks once the odour neutralisers were turned back on to set a 'baseline' of responses.
This was to help understand whether the smell is better, worse, or the same when the odour neutralisers are on, or off.
The trial has now been completed, and the odour neutralisers have been turned back on for works on the primary sedimentation tanks while we analyse the results and determine the best next steps.
Thanks to all who provided feedback. We will provide a decision on the next steps with the use of the odour neutralisers in due course.
Trial Shutdown Results
Rate the smell between 1 to 5 (5 being worst)
|
DATE |
TOTAL |
RATED 1 or 2 |
RATED 3 |
RATED 4 or 5 |
|
4/12/24 – 18/12/24 |
|
|
|
|
|
4 December 2024 |
14 |
6 |
1 |
7 |
|
5 December 2024 |
18 |
6 |
3 |
9 |
|
6 December 2024 |
119 |
4 |
23 |
92 |
|
7 December 2024 |
17 |
3 |
7 |
7 |
|
8 December 2024 |
3 |
2 |
0 |
1 |
|
9 December 2024 |
12 |
5 |
1 |
6 |
|
10 December 2024 |
6 |
4 |
0 |
2 |
|
11 December 2024 |
7 |
3 |
1 |
3 |
|
12 December 2024 |
9 |
1 |
2 |
6 |
|
13 December 2024 |
4 |
1 |
0 |
3 |
|
14 December 2024 |
2 |
1 |
1 |
0 |
|
15 December 2024 |
2 |
1 |
0 |
1 |
|
16 December 2024 |
7 |
3 |
2 |
2 |
|
17 December 2024 |
6 |
1 |
2 |
3 |
|
18 December 2024 |
15 |
2 |
4 |
7 |
|
|
241 |
43 |
47 |
149 |
|
Note: Two people on 18 December did not leave a rating |
|
|||
Trial Part 2 - 19 December 2024 - 2 January 2025
|
DATE |
TOTAL |
RATED 1 OR 2 |
RATED 3 |
RATED 4 OR 5 |
|
19 December 2024 |
1 |
0 |
0 |
1 |
|
20 December 2024 |
4 |
0 |
0 |
4 |
|
26 December 2024 |
1 |
0 |
1 |
0 |
|
No date provided |
11 |
4 |
2 |
5 |
|
|
17 |
4 |
3 |
10 |
How does the smell compare to previous months?
|
DATE |
TOTAL |
ABOUT THE SAME |
NOT AS BAD |
WORSE |
|
|
4/12/24 – 18/12/24 |
|
|
|
|
|
|
4 December 2024 |
13 |
2 |
5 |
6 |
|
|
5 December 2024 |
18 |
4 |
7 |
7 |
|
|
6 December 2024 |
119 |
53 |
18 |
47 |
|
|
7 December 2024 |
17 |
9 |
5 |
3 |
|
|
8 December 2024 |
2 |
0 |
1 |
1 |
|
|
9 December 2024 |
10 |
4 |
5 |
1 |
|
|
10 December 2024 |
5 |
0 |
3 |
2 |
|
|
11 December 2024 |
6 |
0 |
4 |
2 |
|
|
12 December 2024 |
9 |
4 |
2 |
3 |
|
|
13 December 2024 |
3 |
2 |
0 |
1 |
|
|
14 December 2024 |
2 |
0 |
1 |
1 |
|
|
15 December 2024 |
2 |
0 |
1 |
1 |
|
|
16 December 2024 |
7 |
2 |
4 |
1 |
|
|
17 December 2024 |
6 |
4 |
1 |
1 |
|
|
18 December 2024 |
15 |
4 |
8 |
3 |
|
|
|
234 |
88 |
65 |
80 |
|
Trial Part 2 - 19 December 2024 - 2 January 2025
|
DATE |
TOTAL |
ABOUT THE SAME |
NOT AS BAD |
WORSE |
|||
|
19 December 2024 |
1 |
1 |
0 |
0 |
|||
|
20 December 2024 |
4 |
0 |
0 |
4 |
|||
|
26 December 2024 |
1 |
1 |
0 |
0 |
|||
|
No date provided |
11 |
0 |
5 |
6 |
|||
|
|
17 |
2 |
5 |
10 |
|||
Of responses rating the odour at 4 or 5, how did the odour compare to previous months?
|
DATE |
RATED 4 OR 5 |
ABOUT THE SAME |
NOT AS BAD |
WORSE |
|
4/12/24 – 18/12/24 |
|
|
|
|
|
4 December 2024 |
7 |
1 |
0 |
6 |
|
5 December 2024 |
9 |
3 |
1 |
5 |
|
6 December 2024 |
92 |
44 |
4 |
45 |
|
7 December 2024 |
7 |
2 |
3 |
2 |
|
8 December 2024 |
1 |
0 |
0 |
1 |
|
9 December 2024 |
6 |
2 |
3 |
1 |
|
10 December 2024 |
2 |
0 |
0 |
2 |
|
11 December 2024 |
3 |
0 |
1 |
2 |
|
12 December 2024 |
6 |
3 |
0 |
3 |
|
13 December 2024 |
3 |
2 |
0 |
1 |
|
14 December 2024 |
0 |
0 |
0 |
0 |
|
15 December 2024 |
1 |
0 |
0 |
1 |
|
16 December 2024 |
2 |
1 |
0 |
1 |
|
17 December 2024 |
3 |
2 |
0 |
1 |
|
18 December 2024 |
7 |
3 |
1 |
3 |
|
|
|
63 |
13 |
74 |
Trial Part 2 - 19 December 2024 - 2 January 2025
|
19 December 2024 |
1 |
1 |
0 |
0 |
|
20 December 2024 |
4 |
0 |
0 |
4 |
|
26 December 2024 |
0 |
1 |
0 |
0 |
|
No date provided |
5 |
0 |
0 |
5 |
|
|
|
2 |
0 |
9 |
|
|
|
|
|
|
Location where odour was smelt (4 December 2024 - 2 January 2025)
|
SUBURB |
TOTAL |
1 OR 2 |
3 |
4 OR 5 |
|
Alicetown |
2 |
0 |
2 |
0 |
|
Boulcott |
2 |
0 |
0 |
2 |
|
Eastbourne |
4 |
0 |
0 |
4 |
|
Epuni |
1 |
0 |
0 |
1 |
|
Gracefield |
15 |
3 |
0 |
12 |
|
Lower Hutt |
22 |
1 |
6 |
15 |
|
Moera/Hutt Park |
25 |
2 |
4 |
18 |
|
Naenae |
2 |
0 |
2 |
0 |
|
Petone |
5 |
0 |
0 |
5 |
|
Point Howard |
5 |
1 |
2 |
2 |
|
Seaview |
86 |
21 |
7 |
59 |
|
Sorrento Bay |
5 |
4 |
0 |
1 |
|
Wainuiomata |
6 |
0 |
3 |
3 |
|
Waiwhetū |
63 |
16 |
17 |
29 |
|
Waterloo |
16 |
1 |
3 |
12 |
|
Woburn |
7 |
0 |
1 |
6 |
|
|
266 |
49 |
47 |
169 |