✨ Freshwater Management Standards
4 JULY 2014
NEW ZEALAND GAZETTE, No. 71
2015
| Value | Human health for recreation |
|---|---|
| Freshwater Body Type | Lakes and rivers |
| Attribute | E. coli* |
| Attribute Unit | E. coli/100 mL (number of E. coli per hundred millilitres) |
| Attribute State | Numeric Attribute State | Sampling Statistic | Narrative Attribute State |
|---|---|---|---|
| A | ≤260 | Annual median | People are exposed to a very low risk of infection (less than 0.1% risk) from contact with water during activities with occasional immersion and some ingestion of water (such as wading and boating) |
| 95th percentile | People are exposed to a low risk of infection (up to 1% risk) when undertaking activities likely to involve full immersion. | ||
| B | >260 and ≤540 | Annual median | People are exposed to a low risk of infection (less than 1% risk) from contact with water during activities with occasional immersion and some ingestion of water (such as wading and boating). |
| 95th percentile | People are exposed to a moderate risk of infection (less than 5% risk) when undertaking activities likely to involve full immersion. 540 / 100ml is the minimum acceptable state for activities likely to involve full immersion. | ||
| C | >540 and ≤1000 | Annual median | People are exposed to a moderate risk of infection (less than 5% risk) from contact with water during activities with occasional immersion and some ingestion of water (such as wading and boating). |
| National Bottom Line | 1000 | Annual median | People are exposed to a high risk of infection (greater than 5% risk) from contact with water during activities likely to involve immersion. |
| D | >1000 | Annual median | People are exposed to a high risk of infection (greater than 5% risk) from contact with water during activities with occasional immersion and some ingestion of water (such as wading and boating). |
* Escherichia coli
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NZ Gazette 2014, No 71
✨ LLM interpretation of page content
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Freshwater Management Standards for Rivers
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🏛️ Governance & Central AdministrationRivers, Ecosystem Health, Dissolved Oxygen, Water Quality, Environmental Standards