✨ Freshwater Management Regulations
NEW ZEALAND GAZETTE, No. 81 — 10 AUGUST 2017
| Attribute Unit | Biovolume - mm³/L (cubic millimetres per litre) |
|---|
| Attribute State | Numeric Attribute State | Narrative Attribute State |
|---|---|---|
| **80th percentile*** | ||
| A | ||
| (Blue) | ≤0.5 mm³/L biovolume equivalent for the combined total of all cyanobacteria | Risk exposure from cyanobacteria is no different to that in natural conditions (from any contact with fresh water). |
| B | ||
| (Green) | >0.5 and ≤1.0 mm³/L biovolume equivalent for the combined total of all cyanobacteria | Low risk of health effects from exposure to cyanobacteria (from any contact with fresh water). |
| C | ||
| (Yellow) | >1.0 and ≤1.8 mm³/L biovolume equivalent of potentially toxic cyanobacteria OR | |
| >1.0 and ≤10 mm³/L total biovolume of all cyanobacteria | Moderate risk of health effects from exposure to cyanobacteria (from any contact with fresh water). |
| National Bottom Line | 1.8 mm³/L biovolume equivalent of potentially toxic cyanobacteria OR
10 mm³/L total biovolume of all cyanobacteria |
| D
(Orange/Red) | >1.8 mm³/L biovolume equivalent of potentially toxic cyanobacteria OR
10 mm³/L total biovolume of all cyanobacteria | High health risks (eg, respiratory, irritation and allergy symptoms) exist from exposure to cyanobacteria (from any contact with fresh water). |
- The 80th percentile must be calculated using a minimum of 12 samples collected over 3 years.
30 samples collected over 3 years is recommended.
-
Appendix 3 title amended
In the title for Appendix 3, after the reference to “Policy CA3(b)”, insert “and Policy CB3(c).” -
New Appendix 5 and 6 inserted
After Appendix 4, insert:
“Appendix 5: Surveillance Monitoring of E. coli at Primary Contact Sites
Monitoring requirements for E. coli
Where a regional plan has identified primary contact sites, the regional council will:
a. for each primary contact site, identify the date range or date ranges, and flow conditions within which it is or would be used for primary contact;
b. identify a sampling site (or sites) that is representative of the primary contact site (or primary contact sites); and
c. for each sampling site, and within the date range or date ranges identified in (a) undertake weekly sampling for E. coli, unless;
i. a single sample from a sampling site is greater than 260 E. coli per 100ml, in which case, increase sampling frequency to daily where practicable, and take all reasonable steps to identify potential causes of microbiological contamination; and
ii. a single sample is greater than 540 E. coli per 100 ml, in which case take all reasonable steps to notify, and keep the public informed, that the site is unsuitable for recreation until further sampling shows a result of 540 E. coli per 100ml or less.
Appendix 6: National Target for Water Quality Improvement
The national target is to increase proportions of specified rivers and lakes that are suitable for primary contact (those that are in the blue, green and yellow categories) to at least 80% by 2030, and 90% no later
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NZ Gazette 2017, No 81
✨ LLM interpretation of page content
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National Policy Statement for Freshwater Management Amendment Order 2017
(continued from previous page)
🏛️ Governance & Central AdministrationFreshwater Management, National Policy Statement, Resource Management Act, Water Quality, Water Quantity, Amendment Order, Cyanobacteria, E. coli, Monitoring Requirements, National Target