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Maps show most NZ rivers are excluded from swimming standard

Maps show most NZ rivers are excluded from swimming standard


4th March 2016


Forest & Bird has released a series of maps showing that the majority of New Zealand’s rivers and streams will not be covered by any swimmability standard, under the Government’s proposed new water quality measures.

“Environment Minister Nick Smith has said that 90% of New Zealand’s rivers will be swimmable by 2040, but actually the majority of our smaller rivers and streams are excluded from the proposed standards,” says Forest & Bird’s Chief Executive Kevin Hague.

Link to maps here.

While most debate has so far focused on how valid the Government’s proposed test of swimmability is, most New Zealanders won’t have realised that what the proposals really mean is that up to 90% of rivers and streams won’t be required to meet any level of safety for human health.

“The streams that are not covered by the Government’s standards are often the places that are popular with local families. While they may be too small for adults to swim in, they are frequently the safe, slow rivers and streams that are popular with families and children to explore and play in."

There are 450,000kms of mapped streams and rivers in New Zealand, but only 45,000kms (just 10%) of them are covered by the Government’s proposed new National Policy Statement on Freshwater.

Only larger ‘Fourth Order’ rivers (blue rivers on our maps) must meet the proposed swimmability standard. It will be up to regional councils to set E.coli limits for lesser order tributaries of those big rivers so that the lower 4th order reaches are safe for human contact. In effect this means that only some tributaries of these big rivers may be managed for human contact, and many may not be.

For those streams and rivers that never feed into a fourth order river, of which there are many, they are simply exempt from any standard whatsoever.

"Given the popularity of many of these rivers and streams, this places Kiwi families at an unacceptable risk of contracting illness.” says Mr Hague.

“Minister Smith has given New Zealander’s the impression that 90% of our waterways will be required to meet some kind of swimmability standard, but the reality is that the majority of our streams and rivers will not be required to meet any health standard at all,” says Mr Hague.

Notes for Journalists:

Popular swimming spots
The Land and Water Aotearoa website shows where rivers are tested, allowing you to compare Forest & Bird maps to the location of your region’s popular swimming spots.

River categories
New Zealand rivers are classified according to a hierarchy determined by the number of tributaries. The first tributary is 1st order. After two tributaries join they become a 2nd order stream. When two of these join they become a 3rd order. The Government’s proposed standard applies to orders 4 and above.

In the maps, the stretches of river that will be required to meet the proposed swimmability standard are shown in blue (4th order and above). Lesser order rivers and streams (orders 1, 2 and 3) will not be required to meet any standard are shown in orange.

Where lower order tributaries feed into big (4th order) rivers, those tributaries may need to be managed in order to achieve the standard downstream. Because 4th order rivers are so big, many of their tributaries could be very polluted and still not impact on the quality of the lower reaches. In this situation, the proposed NPS does not require those polluted tributaries to be made safe for human contact.

E.coli
E.coli in water comes from animal faeces, and therefore large quantities of E.coli relate to high levels of excrement in the stream. The presence of E.coli also correlates to nutrients such nitrogen and phosphorous that impact on ecological health of waterways.

Regional examples of rivers and streams excluded from new standard:

Whangarei:
• Tutukaka river
• Pataua River
• Taiharuru River
North Shore:
• Orewa River
• Weiti River
• Okura River
• Wairau Creek at Milford Beach
• Almost every stream and river on the Northshore, north to Hatfields Beach
Auckland:
• Only one river in Eastern Auckland is included in the standard
• Only 5 rivers in West Auckland are included in the standard: Oratia Stream, Mumutu Stream, Brigham Creek, and Rangitopuni River.
Tauranga
• Wainui River
• Waipapa River
• Kopurerua Stream
Rotorua
• New standard only applies to 4 of the waterways that flow into lake Rotorua.
• None of the waterways from Waiteti north and around the eastern lake back to Rotorua are included.
• None of the rivers and stream feeding into lake Okareka
Hawke’s Bay
• The stream flowing beside the popular Waipatiki Farm Park north of Napier will not be covered
• Waipuka Stream at Ocean Beach won’t have to meet the standard. Waipuka is a popular swimming place and suffers from water quality issues
• Maraetotara Falls
New Plymouth
• Te Henui Stream
• Herekawe Stream
• Mangaotuku Stream
• Huatoki Stream
• Waitaha Strean
• Mangati Stream
Taupo
• Motuoapu – all streams
• From Rangiita to Hapete – all streams
• Waitahanui
• Acacia Bay to Kinloch
• Okaia Stream (Kinloch) to Kawakawa point – all streams.
Wellington
• Wainui Stream
• Wharemauku Stream
• Waimeha Stream/Ngarara Stream
Banks Peninsula
• None of the waterways draining into either Lyttleton or Akaroa Harbours
• All other waterways on the peninsular except Opara Stream, Takiritawa River (into Lake Forsyth), and the Kaituna River

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