{"id":77126,"date":"2026-05-14T12:31:19","date_gmt":"2026-05-14T00:31:19","guid":{"rendered":"https:\/\/www.greenpeace.org\/aotearoa\/?p=77126"},"modified":"2026-05-14T12:32:16","modified_gmt":"2026-05-14T00:32:16","slug":"nitrate-in-drinking-water-linked-to-stomach-cancer-risk-new-study","status":"publish","type":"post","link":"https:\/\/www.greenpeace.org\/aotearoa\/press-release\/nitrate-in-drinking-water-linked-to-stomach-cancer-risk-new-study\/","title":{"rendered":"Nitrate in drinking water linked to stomach cancer risk"},"content":{"rendered":"\n<p>A new Danish study has <a href=\"https:\/\/link.springer.com\/article\/10.1007\/s10654-026-01390-6\">linked elevated levels of nitrate in drinking water to an increased risk of stomach cancer<\/a>. Greenpeace Aotearoa says it\u2019s yet more reason to lower New Zealand\u2019s nitrate limits, following studies that have linked low-level nitrate to risks of bowel cancer, dementia, and pre-term birth.<\/p>\n\n<p><strong>Greenpeace freshwater campaigner Will Appelbe says,<\/strong> \u201cThis adds to a mountain of scientific research that indicates potential health risks associated with nitrate levels much lower than New Zealand\u2019s legal limits.<\/p>\n\n<p>\u201cFrom bowel cancer and preterm birth, to potential risks of dementia and now stomach cancer, it\u2019s clear that nitrate contamination is a very real risk for New Zealanders, and the Coalition Government is failing to address it adequately.\u201d<\/p>\n\n<p>Greenpeace will be running <a href=\"https:\/\/www.greenpeace.org\/aotearoa\/story\/free-water-testing-nitrate-contamination\/\">free drinking water testing for nitrate contamination in Southland this weekend<\/a>, as part of a long-standing programme to ensure that New Zealanders have access to information about what\u2019s in their drinking water.<\/p>\n\n<p>The organisation will be at the Mataura Community Centre from 10am-4pm on Friday; \u014ctautau Primary School from 10am-4pm on Saturday; and Lumsden Hall from 10am-3pm on Sunday.<\/p>\n\n<p>International studies have shown that levels of nitrate as low as 1 mg\/L are associated with an <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/29435982\/\">increased risk of bowel cancer <\/a>and potentially an <a href=\"https:\/\/alz-journals.onlinelibrary.wiley.com\/doi\/10.1002\/alz.70995\">increased dementia risk<\/a>. At levels of 5 mg\/L or higher, pregnant people are at an <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/33949893\/\">increased risk of preterm birth<\/a>. New Zealand\u2019s current legal health limit of 11.3mg\/L was set in the 1950s to prevent blue baby syndrome, and has not been updated since.&nbsp;<\/p>\n\n<p>Appelbe says that far too many New Zealanders are exposed to potentially unsafe levels of nitrate, with many not even knowing that there is a risk at all.<\/p>\n\n<p>\u201cWe\u2019re talking about people\u2019s basic health and wellbeing here. Everybody, no matter where they live, should have access to clean, safe drinking water. Right now in New Zealand, that\u2019s not the case, and it\u2019s shameful that as a nation, we\u2019ve let things get this bad.<\/p>\n\n<p>\u201cRather than tackling nitrate at the source &#8211; the intensive dairy industry and the overuse of synthetic nitrogen fertiliser &#8211; successive Governments have chosen to sit back and watch as this crisis gets worse. Now we must deal with the results of decades of inaction.\u201d<\/p>\n\n<p>Greenpeace is calling on the Government to lower the nitrate limit, and regulate the intensive dairy industry to prevent further nitrate contamination.<\/p>\n\n<p>\u201cThe Government must act now to lower the nitrate limit in line with current health science, and prevent further nitrate contamination by phasing out synthetic nitrogen fertiliser use and reducing the size of the dairy herd.\u201d<\/p>\n\t\t\t<section\n\t\t\tclass=\"boxout post-15662 \"\n\t\t\t\n\t\t>\n\t\t\t<a\n\t\t\t\tdata-ga-category=\"Take Action Boxout\"\n\t\t\t\tdata-ga-action=\"Image\"\n\t\t\t\tdata-ga-label=\"n\/a\"\n\t\t\t\tclass=\"cover-card-overlay\"\n\t\t\t\thref=\"https:\/\/www.greenpeace.org\/aotearoa\/petition\/petition-get-nitrates-out-of-our-drinking-water\/\" \n\t\t\t><\/a>\n\t\t\t\t\t\t\t<img\n\t\t\t\t\t\tsrc=\"https:\/\/www.greenpeace.org\/static\/planet4-aotearoa-stateless\/2021\/02\/6976888c-jana-sabeth-7b1w1mcwekw-unsplash-1024x683.jpg\"\n\t\t\t\t\t\tsrcset=\"https:\/\/www.greenpeace.org\/static\/planet4-aotearoa-stateless\/2021\/02\/6976888c-jana-sabeth-7b1w1mcwekw-unsplash-600x400.jpg 600w, https:\/\/www.greenpeace.org\/static\/planet4-aotearoa-stateless\/2021\/02\/6976888c-jana-sabeth-7b1w1mcwekw-unsplash-1024x683.jpg 1024w, https:\/\/www.greenpeace.org\/static\/planet4-aotearoa-stateless\/2021\/02\/6976888c-jana-sabeth-7b1w1mcwekw-unsplash-768x512.jpg 768w, https:\/\/www.greenpeace.org\/static\/planet4-aotearoa-stateless\/2021\/02\/6976888c-jana-sabeth-7b1w1mcwekw-unsplash-510x340.jpg 510w, https:\/\/www.greenpeace.org\/static\/planet4-aotearoa-stateless\/2021\/02\/6976888c-jana-sabeth-7b1w1mcwekw-unsplash.jpg 1402w\"\n\t\t\t\t\t\tsizes=\"(min-width: 1000px) 358px, (min-width: 780px) 313px, 88px\"\n\t\t\t\t\t\talt=\"\" title=\"\"\n\t\t\t\t\/>\n            \t\t\t<div class=\"boxout-content\">\n\t\t\t\t\t\t\t\t\t<a\n\t\t\t\t\t\tclass=\"boxout-heading medium\"\n\t\t\t\t\t\tdata-ga-category=\"Take Action Boxout\"\n\t\t\t\t\t\tdata-ga-action=\"Title\"\n\t\t\t\t\t\tdata-ga-label=\"n\/a\"\n\t\t\t\t\t\thref=\"https:\/\/www.greenpeace.org\/aotearoa\/petition\/petition-get-nitrates-out-of-our-drinking-water\/\"\n\t\t\t\t\t\t\n\t\t\t\t\t>\n\t\t\t\t\t\tPETITION: Lower nitrate limits in drinking water\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<p class=\"boxout-excerpt\">Call on the Government to lower the limit for nitrates in drinking water to safe levels.<\/p>\n\t\t\t\t                                    <a\n                        class=\"btn btn-primary\"\n                        data-ga-category=\"Take Action Boxout\"\n                        data-ga-action=\"Call to Action\"\n                        data-ga-label=\"n\/a\"\n                        href=\"https:\/\/www.greenpeace.org\/aotearoa\/petition\/petition-get-nitrates-out-of-our-drinking-water\/\"\n                        \n                    >\n                        Take Action\n                    <\/a>\n                \t\t\t<\/div>\n\t\t\t\t\t<\/section>\n\t","protected":false},"excerpt":{"rendered":"<p>A new Danish study has linked elevated levels of nitrate in drinking water to an increased risk of stomach cancer.<\/p>\n","protected":false},"author":90,"featured_media":65010,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_planet4_optimize_post_is_variant":false,"_planet4_optimize_experiment_name":"","_planet4_optimize_variant_name":"","ep_exclude_from_search":false,"p4_og_title":"","p4_og_description":"","p4_og_image":"","p4_og_image_id":"","p4_seo_canonical_url":"","p4_campaign_name":"","p4_local_project":"","p4_basket_name":"","p4_department":"","footnotes":""},"categories":[10],"tags":[19,22,23],"p4-page-type":[7],"class_list":["post-77126","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-greenpeace","tag-food-and-farming","tag-freshwater","tag-health","p4-page-type-press-release"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.8 (Yoast SEO v26.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Nitrate in drinking water 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