A mining sector group says New Zealand should be doing more to capitalise on the use of pollution-soaking clay to clean up dairy land.

Discharging untreated wastewater into the sea is "not an option" for the Wanganui District Council, says Mayor Annette Main.

Thirteen days before the world's top male triathletes dived into the chilly, salty Waitemata Harbour for the grand final of their championship series, the water was sampled for signs of bacterial contamination.

Auckland Council scientists are developing a computer model that will predict, for beach swimmers, the amount of sewage pollution on any given day.

John Key has dismissed criticism of New Zealand's "100% Pure" brand, by comparing it to a McDonalds marketing campaign.

Editorial: Russel Norman is absolutely right to say that scientists must be free to perform their academic duty to report environmental degradation.

The green waste dumped and leaching into Dunedin's urban streams is "offensive" and endangering the brown trout, Fish & Game says.

According to the latest update, the salvage crew lost two work days last week because of poor weather, but on the remaining days good progress was made.

Daina Shipping representative Konstantinos Zacharatos again apologised on behalf of the company to the Bay of Plenty community and people of New Zealand.

It is appalling that so many of our rivers are not clean enough for swimming.The reason is obvious. This is a farming country.

More than half of monitored recreational sites on our rivers are unsafe for swimming, a report has revealed.

As valuable to marine life as it is prized by humans, the Hauraki Gulf is in decline. Though solutions seem as elusive as the gulf's fish stocks, a groundswell is building for collaboration.

Air pollution from motor vehicles will kill about 255 Kiwis this year - and while we've got emissions standards, there's no serious testing regime in place.