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Water

According to the National Policy Statement for Freshwater Management (2020), if any single E. coli level at a monitored site is above 260 E. coli per 100 mL, the regional council must (unless the council is satisfied that the elevated result is temporary or the cause is being addressed):

(a) increase sampling frequency to daily, where practicable; and
(b) take all practicable steps to identify potential causes of microbial contamination.

Additionally, if any single E. coli level is above 540 E. coli per 100 mL, the regional council must, as soon as practicable, take all practicable steps to notify the public and keep the public informed that the site is unsuitable for primary contact, until further sampling shows a result of 540 E. coli per 100 mL or less

Bay of Plenty Regional Council has set their safe swimming limit for Freshwater at 550 E. coli CFU/100 ml of water based on the Microbiological Water Quality Guidelines (2003). Our data has been coloured to reflect their practice.

Safe E.coli level to swim

Current E.coli level



Date
(oldest to newest)

E. coli (CFU)

Unsafe to swim 
(above 550 CFU)

26 Oct 21

500

550

2 Nov 21

1800

550

17 Nov 21

500

550

30 Nov 21

600

550

13 Jan 22

1000

550

28 Jan 22

7250

550

4 Feb 22

16000

550

11 Feb 22

16000

550

19 Feb 22

3865

550

25 Feb 22

2300

550

4 Mar 22

5600

550

11 Mar 22

1750

550

18 Mar 22

4300

550

25 Mar 22

16000

550

1 Apr 22

1380

550

8 Apr 22

1200

550

15 Apr 22

6000

550

22 Apr 22

16000

550

29 Apr 22

4500

550

6 May 22

3800

550

13 May 22

2788

550

19 May 22

7200

550

26 May 22

6500

550

2 Jun 22

9820

550

9 Jun 22

16000

550

16 Jun 22

7530

550

23 Jun 22

6800

550

30 Jun 22

5230

550

7 Jul 22

1070

550

14 Jul 22

9500

550

28 Jul 22

16000

550

4 Aug 22

7490

550

11 Aug 22

3240

550

18 Aug 22

6000

550

24 Aug 22

8490

550

1 Sept 22

3010

550

8 Sept 22

5500

550

22 Sept 22

4250

550

29 Sept 22

5970

550

6 Oct 22

6730

550

13 Oct 22

5240

550

20 Oct 22

6000

550

27 Oct 22

6720

550

6 Nov 22

7200

550

10 Nov 22

6000

550

17 Nov 22

8500

550

25 Nov 22

6250

550

30 Nov 22

6000

550

8 Dec 22

7250

550

15 Dec 22

4900

550

22 Dec 22

4920

550

29 Dec 22

2250

550

5 Jan 22

5500

550

19 Jan 22

12400

550

1 Feb 23

3730

550

15 Feb 23

6930

550

1 Mar 23

4750

550

15 Mar 23

5920

550

29 Mar 23

5950

550

 

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