") no-repeat center center;background-size:10px 16px;content:' '}@media(min-width:768px){.gpjOba::before{display:none}}.hWxisF{width:100%;box-sizing:border-box}@media(min-width:768px){.hWxisF{max-width:634px}}@media(min-width:1250px){.hWxisF{max-width:622px}}.lmuuNK{display:flex;width:auto;box-sizing:border-box;align-items:center;justify-content:flex-start;gap:4px;color:#0074bd}.ctXiMg{display:block;font:bold 14px/20px 'Indy Sans','Indy Sans Fallback',sans-serif;text-decoration-line:underline;margin-block:0;text-align:center}.SKFrh{display:inline-flex;align-items:center;justify-content:center;gap:4px}.SKFrh:hover .sc-aja53j-2,.SKFrh:hover .sc-a5wy94-0{color:#005c97}.ghJHgZ{font:normal 16px/20px 'Indy Sans','Indy Sans Fallback',sans-serif}.jlvSeZ{display:flex;position:relative;overflow:hidden;width:auto;height:40px;flex-direction:column;order:-1;gap:8px;opacity:1;transition:all .5s ease-in-out;transition-behavior:allow-discrete}.jlvSeZ::after{--fade-from:rgba(255,255,255,0);--fade-mid:rgba(255,255,255,0.5);--fade-to:#fff;position:absolute;bottom:0;left:0;z-index:1;width:100%;height:40px;background-image:linear-gradient(to bottom,var(--fade-from) 0,var(--fade-mid) 50%,var(--fade-to) 100%);content:'';opacity:1;transition:opacity 150ms ease-out}@media(min-width:768px){.ifXxYf{order:-1}}@media(min-width:768px){.gYsKvs{display:flex;position:relative;align-items:flex-start;margin-top:12px}}@media(min-width:1000px){.qHctg .taboola{display:none}}.qHctg:has(#taboola-carousel-thumbnails){min-height:426px}.qHctg:has(#taboola-mid-article-thumbnails-crime){min-height:405px}@media(min-width:1000px){.qHctg:has(#taboola-carousel-thumbnails),.qHctg:has(#taboola-mid-article-thumbnails-crime){min-height:0}}.hCEqSm .tp-container-inner,.hCEqSm .sc-1suqprf-0{position:relative;box-shadow:0 -22px 16px 22px rgba(255,255,255,0.95)}.hCEqSm.closed{display:none}.kePfEG{width:32px;color:#0074bd}@media(min-width:768px){.kePfEG.mobile-only{display:none}}.kePfEG:hover{color:#005c97}.wViVX{display:flex;gap:12px}.kWPFaS{position:fixed;top:0;left:0;z-index:2147483644;background:rgba(0,0,0,0.5);cursor:pointer;opacity:0;transition:opacity 300ms ease-in-out}.kWPFaS.overlay-background--open{width:100vw;height:100vh;opacity:1}.gXmchn{--trans:300ms ease-in-out;position:fixed;top:0;left:0;z-index:2147483645;width:100vw;height:100vh;opacity:0;pointer-events:none;transform:translateY(-24px);transform-origin:top center;transition:transform var(--trans),opacity var(--trans)}.gXmchn.overlay--open{opacity:1;transform:translateY(0);transition-delay:150ms}.gXmchn.overlay--open>:first-child{pointer-events:auto}.cArLiK .sc-17yxc4y-0{display:none}.cArLiK:hover .sc-17yxc4y-0,.cArLiK.bookmark-button-saved .sc-17yxc4y-0{display:block}.cArLiK:hover .sc-17yxc4y-1,.cArLiK.bookmark-button-saved .sc-17yxc4y-1{display:none}.cArLiK.bookmark-button-saved .sc-17yxc4y-0{display:block}.cArLiK.bookmark-button-saved .sc-17yxc4y-1{display:none}.cArLiK.bookmark-button-saved:hover .sc-17yxc4y-0{display:none}.cArLiK.bookmark-button-saved:hover .sc-17yxc4y-1{display:block}.jKfqFn{--margin-x:12px;--modal-width:calc(100% - (var(--margin-x) * 2));--modal-max-width:351px;--padding:60px 16px 42px;--line-height:1.25;display:flex;position:fixed;top:50%;left:50%;overflow:auto;width:var(--modal-width);max-width:var(--modal-max-width);max-height:100vh;box-sizing:border-box;flex-direction:column;align-items:center;justify-content:center;padding:var(--padding);background-color:#eaf2f2;box-shadow:0 1px 1px rgba(0,0,0,0.5);line-height:var(--line-height);transform:translate(-50%,-50%)}@media(min-width:768px){.jKfqFn{--modal-width:600px;--modal-max-width:none;--padding:72px 80px 64px;--line-height:1.2}}@media(min-width:1000px){.jKfqFn{--modal-width:635px}}.eYHQuU{--close-button-margin:16px;position:absolute;top:var(--close-button-margin);right:var(--close-button-margin)}@media(min-width:768px){.eYHQuU{--close-button-margin:24px}}.gVWZyJ{width:100%;max-width:437px;margin-bottom:20px}@media(min-width:768px){.gVWZyJ{margin-bottom:18px}}.gvKsFx{position:absolute;overflow:hidden;width:.01em;height:.01em;padding:0;border:0;clip:rect(0,0,0,0);white-space:nowrap}.loKuIs{width:100%;margin:0}.ktFUxH{margin:0 0 30px;font:bold 26px/1.15 'Indy Serif','Indy Serif Fallback',serif}@media(min-width:768px){.ktFUxH{font:bold 28px/1.15 'Indy Serif','Indy Serif Fallback',serif}}.cnAboz{display:block;width:100%;padding:0;margin:0 0 30px;font:normal 16px/1.44 'Indy Sans','Indy Sans Fallback',sans-serif}@media(min-width:768px){.cnAboz{font:normal 20px/1.44 'Indy Sans','Indy Sans Fallback',sans-serif}}.bdfufZ{display:block;margin-top:30px;color:#222;font:normal 16px/normal 'Indy Sans','Indy Sans Fallback',sans-serif}.cVoYmY{padding:0}.ldnLrS{display:inline-block;width:32px;height:32px;color:#337e81}.ixvYXS{display:flex;flex-direction:row;justify-content:center;gap:12px}.hCHeth{display:flex;position:relative;justify-content:center}@media(min-width:768px){.hCHeth{justify-content:flex-end;padding-top:12px;margin:0}}.hvJvAA{display:flex}.sticky .hvJvAA{flex-direction:column}.kciiLJ{overflow:hidden;height:23px;margin-bottom:8px;border-bottom:0;clear:both}@media(min-width:768px){.kciiLJ{height:25px}}.fSsEip{display:inline-block;flex-shrink:0;margin:0 12px 0 0;font:bold 14px/normal 'Indy Sans','Indy Sans Fallback',sans-serif}.fSsEip::after{content:':'}.kdqbii{display:inline-block;margin-right:12px;margin-bottom:4px;color:#222;font:normal 14px/1.29 'Indy Sans','Indy Sans Fallback',sans-serif;text-decoration:underline}.kdqbii::first-letter {text-transform:capitalize}@media(min-width:1000px){.subscribed .eXIHQG{margin-top:-184px}.article-feature:not(.article-feature-video) .subscribed .eXIHQG{margin-top:-407px}}.eXIHQG>p{margin:16px 0}.article-premium .eXIHQG>p{line-height:27px}.eXIHQG>h2{font-size:21px}.article-climate .eXIHQG>h2{color:#0074bd}.article-sgi .eXIHQG>h2{color:#0074bd}.eXIHQG>p:first-child{margin-top:0}.eXIHQG span:first-child~p:first-of-type{margin-top:0}.cnknzo{display:flex;position:relative;max-width:100%;min-height:600px;justify-content:center;margin:0 auto;background-color:transparent;clear:both}@media(min-width:1000px){.cnknzo{min-height:450px}}.teads .cnknzo{display:block}.cnknzo [data-mpu]{position:sticky;top:16px}@media(min-width:1000px){.dTdlgq{display:none}}.dTdlgq[data-mpu1]{min-height:600px}.dTdlgq.pb-20{padding-bottom:20px}.gMxIQB{margin:0 0 24px;font:normal 16px/20px 'Indy Sans','Indy Sans Fallback',sans-serif}.fJIQUi{font:bold 16px/20px 'Indy Sans','Indy Sans Fallback',sans-serif}.eFDpwi{overflow:hidden;width:100%;box-sizing:border-box;margin-bottom:16px}@media(min-width:768px){.eFDpwi{max-width:634px}}@media(min-width:1250px){.eFDpwi{max-width:622px}}.bZTzYt{width:100%;box-sizing:border-box;padding:8px 12px 12px;border-top:8px solid #0074bd;background-color:#e5f1f8}@media(min-width:768px){.bZTzYt{padding-top:4px;padding-bottom:12px}}.dDFcwe{font:bold 22px/26px 'Indy Serif','Indy Serif Fallback',serif;margin:0 0 12px;text-align:center}@media(min-width:768px){.dDFcwe{font:bold 30px/34px 'Indy Serif','Indy Serif Fallback',serif;letter-spacing:-0.048px;margin-bottom:12px;text-align:left}}.jbPJqN{display:block;margin-bottom:12px}@media(min-width:768px){.jbPJqN{display:none}}.kKulbz{display:flex;width:100%;box-sizing:border-box;align-items:center;justify-content:center;gap:4px;background-color:#e5f1f8;color:#0074bd}@media(min-width:768px){.kKulbz{width:auto;justify-content:flex-start}}.bcQtEw{display:block;font:bold 14px/20px 'Indy Sans','Indy Sans Fallback',sans-serif;text-decoration-line:underline;margin-block:0;text-align:center}.jDmWqj{display:inline-flex;align-items:center;justify-content:center;gap:4px}.jDmWqj:hover .sc-hez36s-5,.jDmWqj:hover .sc-a5wy94-0{color:#005c97}.bhFQeV{font:normal 16px/20px 'Indy Sans','Indy Sans Fallback',sans-serif}.kqOtlp{display:flex;width:100%;flex-direction:column}@media(min-width:768px){.kqOtlp{display:flow-root;gap:24px;transition:margin-bottom .3s ease-in-out}}.bvgAkY{display:flex;width:100%;flex-direction:column;align-items:center;justify-content:center}@media(min-width:768px){.bvgAkY{position:relative;z-index:1;width:212px;flex-shrink:0;justify-content:flex-start;margin-left:24px;float:right}}.ZbvOr{display:none;flex-direction:row;align-items:center;justify-content:center;gap:8px;margin-top:8px}@media(min-width:768px){.ZbvOr{display:flex;margin-top:12px}}.cqHcKs{display:flex;width:100%;align-items:center;justify-content:center;gap:8px;margin-top:8px;margin-bottom:12px}@media(min-width:768px){.cqHcKs{display:none}}@media(min-width:768px){.bjQKsM{order:-1}}.ikTXHr .sc-aja53j-5::after{--fade-from:rgba(229,241,248,0);--fade-mid:rgba(229,241,248,0.5);--fade-to:#e5f1f8}@media(min-width:360px){.ikTXHr .sc-aja53j-5 .sc-aja53j-7{display:none}}.dVyExd{display:flex;min-height:600px;justify-content:center}@media(min-width:1000px){.dVyExd{min-height:450px}}.jHlYLm{min-height:600px}@media(min-width:1000px){.jHlYLm{min-height:450px}}.jHlYLm.mobile-only{display:block}@media(min-width:1000px){.jHlYLm.mobile-only{display:none}}.jHlYLm.desktop-only{display:none}@media(min-width:1000px){.jHlYLm.desktop-only{display:block;margin-bottom:16px}}.jHlYLm.desktop-only+p{margin-top:0}.jHlYLm .third-party-ad{position:sticky;top:16px}.czoMqL{width:100%;flex-grow:1}.czoMqL .amp-article-content[amp-access][amp-access-hide]{display:block;overflow:hidden;max-height:360px}.czoMqL .amp-article-content[amp-access][amp-access-hide] .social-share{display:none}.czoMqL .amp-article-content[amp-access][amp-access-hide].show-all-content{max-height:100%}@media(max-width:594px){.czoMqL .amp-article-content[amp-access][amp-access-hide]{max-height:530px}}.czoMqL .amp-newsletter-reg-gate{position:relative;left:-12px;width:calc(100% + 24px)}.czoMqL .social-share{width:100%;padding-top:10px;padding-bottom:20px}@media(min-width:768px){.czoMqL .social-share{justify-content:flex-start}}.czoMqL .social-share.sticky{display:none}@media(min-width:1000px){.czoMqL .social-share.sticky{display:flex;position:sticky;top:14px;width:34px;flex-direction:column;padding-top:0;margin-top:0;margin-left:-25%}.czoMqL .social-share.sticky amp-social-share,.czoMqL .social-share.sticky .sc-mgcah7-0{margin:0 0 16px}.article-feature-video .czoMqL .social-share.sticky{margin-top:0}.article-feature:not(.article-feature-video) .czoMqL .social-share.sticky{margin-top:35%}}.czoMqL.sponsored-article img,.czoMqL.sponsored-article video{width:100%;max-width:602px;height:auto}.czoMqL.sponsored-article iframe{max-width:602px;max-height:400px}.czoMqL .under-article-prompt-donations{padding-bottom:8px;margin-top:-3px}.czoMqL .big-letter{--color:#222;display:flex;position:relative;width:0;height:0;align-items:center;justify-content:center;padding:40px;margin-top:22px;margin-right:12px;border:1px solid var(--color);float:left;font:normal 52px/1 'Indy Serif','Indy Serif Fallback',serif;text-transform:uppercase}.czoMqL .big-letter:first-child{margin-top:6px}.czoMqL .big-letter::before{position:absolute;top:0;left:0;width:100%;height:100%;box-sizing:border-box;border:1px solid var(--color);border-radius:50%;content:''}.czoMqL #taboola-below-article-1{min-height:2350px}@media(min-width:768px){.czoMqL #taboola-below-article-1{min-height:3370px}}.czoMqL #taboola-below-article-1-split-num-1{min-height:130px}@media(min-width:768px){.czoMqL #taboola-below-article-1-split-num-1{min-height:415px}}.czoMqL .sc-fwko30-0+.sc-1xtsh2b-0{margin-top:-16px}@media(min-width:768px){.czoMqL{max-width:636px;margin:0}}@media(min-width:1000px){.czoMqL{max-width:624px;margin:0}.czoMqL.subscribed{max-width:636px}}@media(max-width:999px){.czoMqL{padding-right:0}.czoMqL .under-article-prompt-donations{margin-top:-18px}}.czoMqL .anchor-nav-header{scroll-margin-top:79px}.czoMqL .anchor-nav-header a{color:#222}.czoMqL .anchor-nav-header a:hover{color:#222}.clVPNf{display:flex;flex-wrap:wrap;justify-content:flex-start;margin-bottom:8px;color:#646464;font:normal 16px/20px 'Indy Sans','Indy Sans Fallback',sans-serif}@media(min-width:768px){.clVPNf{width:70%;align-items:center;justify-content:flex-start;margin-bottom:0;font:normal 16px/24px 'Indy Sans','Indy Sans Fallback',sans-serif}}@media(min-width:1000px){.clVPNf{width:70%;margin-bottom:0}}.hIiCJP{display:flex;height:20px;margin:0 12px 8px 0}.article-voices .hIiCJP{height:auto}@media(min-width:425px){.article-voices .hIiCJP{height:20px}}.hIiCJP::before{display:inline-block;align-self:center;margin-top:1px;margin-right:12px;content:'\2022';transform:scale(1.5)}.hIiCJP:first-child::before{content:none}@media(min-width:768px){.hIiCJP{height:24px;margin-bottom:0}.hIiCJP::before{margin-top:2px}}.hIiCJP time{display:block}.hIiCJP time::first-letter {text-transform:capitalize}.ecYkhF{display:inline-block;margin:0 12px 8px 0;color:#0074bd;font:bold 16px/20px 'Indy Sans','Indy Sans Fallback',sans-serif;letter-spacing:-0.5px}.ecYkhF:hover,.ecYkhF:active{color:#005c97}@media(min-width:768px){.ecYkhF{margin-bottom:0}}.cePgis{margin:0 4px 8px 0}.cePgis::before{display:inline-block;margin-top:2px;margin-right:12px;color:#646464;content:'\2022';transform:scale(1.5)}.cePgis:first-child::before{display:none}@media(min-width:768px){.cePgis{margin-bottom:0}}.kuCYzg{display:flex;justify-content:flex-start;padding:0;margin:0 0 16px}@media(min-width:768px){.kuCYzg{display:flex;width:30%;align-items:center;justify-content:flex-end;margin:0}}@media(min-width:1000px){.kuCYzg{width:30%}}.gpMjkH{padding-top:0;border-top:0;border-bottom:0}@media(min-width:768px){.gpMjkH{display:flex;flex-flow:row wrap;padding-bottom:16px}.gpMjkH .sc-1qz44j0-0{order:1}.gpMjkH .sc-1qz44j0-6{order:2}}@media(min-width:1000px){.gpMjkH{flex-direction:row}}.hqOfkx{padding:16px 12px 12px;text-align:left;font:bold 14px/18px 'Indy Sans','Indy Sans Fallback',sans-serif}@media(min-width:768px){.hqOfkx{padding:16px 16px 12px}}.article-infact .hqOfkx{padding:16px 0}@media(min-width:1000px){.hqOfkx{padding:24px 0 19px}.article-feature .hqOfkx{max-width:968px;margin:0 auto}}.hqOfkx a{color:#222}.hqOfkx a:hover{color:#005c97}.hqOfkx a:hover::after{color:#222}.hqOfkx a::after{margin-right:4px;margin-left:4px;content:'>'}.hqOfkx a:last-child::after{display:none}.bPeEQC{margin:0 0 20px;letter-spacing:0}.iHWilb{margin:0;color:#646464;font:normal 16px/20px 'Indy Sans','Indy Sans Fallback',sans-serif}@media(min-width:768px){.iHWilb{font:normal 18px/22px 'Indy Sans','Indy Sans Fallback',sans-serif}}@media(min-width:1000px){.iHWilb{font:normal 20px/24px 'Indy Sans','Indy Sans Fallback',sans-serif}}.iHWilb p{font:inherit}.article-feature .iHWilb a{font-weight:bold}.gRuXKg{max-width:968px;margin:0 auto;background:#fff}@media(min-width:1000px){.gRuXKg{padding:0 16px}.parallax .gRuXKg{max-width:1240px}}.clZtvZ{font:bold 32px/36px 'Indy Serif','Indy Serif Fallback',serif;letter-spacing:-0.0156em}@media(min-width:768px){.clZtvZ{font:bold 44px/48px 'Indy Serif','Indy Serif Fallback',serif;letter-spacing:-0.0113em}}@media(min-width:1000px){.clZtvZ{font:bold 54px/58px 'Indy Serif','Indy Serif Fallback',serif;letter-spacing:-0.0092em}}.gLQzaj .sc-qvufca-0{margin:0 12px}@media(min-width:768px){.gLQzaj .sc-qvufca-0{max-width:968px;margin-right:16px;margin-left:16px}}@media(min-width:1000px){.gLQzaj .sc-qvufca-0{margin-right:auto;margin-left:auto}}.gLQzaj .sc-qvufca-2{margin-bottom:16px;color:#222}@media(min-width:768px){.gLQzaj .sc-qvufca-2{margin-bottom:18px}}@media(min-width:1000px){.gLQzaj .sc-qvufca-2{margin-top:0}}.article-feature .gLQzaj .sc-qvufca-2{text-align:center}@media(min-width:1000px){.article-feature .gLQzaj .sc-qvufca-2{max-width:968px}}.gLQzaj .sc-aeekvc-0{margin-bottom:16px}@media(min-width:1000px){.gLQzaj .sc-aeekvc-0{max-width:968px}}.gLQzaj .sc-aeekvc-0 p{margin-top:0}@media(min-width:768px){.gLQzaj .sc-aeekvc-0 p{margin-bottom:16px}}@media(min-width:2560px){.gLQzaj .sc-aeekvc-0 p{margin-bottom:12px}}.ldpSwp{--bleed:12px;display:flex;box-sizing:border-box;flex-direction:row;gap:32px;padding:16px var(--bleed);background-color:#fff}.article-liveblog .ldpSwp{background-color:#f7f7f7}@media(min-width:768px){.ldpSwp{--bleed:0;max-width:1000px;margin:0 auto}}@media(min-width:1000px){.ldpSwp{--bleed:16px;max-width:1000px;padding:var(--bleed)}}.ilJfaV{overflow:hidden;height:0;color:transparent}.fIgmuu{max-width:100%;margin:0 0 20px}.fIgmuu.sticky{position:sticky;top:16px}.grPbuS{min-height:600px}.grPbuS #mpu1{position:sticky;top:16px}.jfSvuX{min-height:250px}.kdHApG{max-width:100%}.dgoHoz{margin:0 0 6px;color:#646464;font-family:'Indy Sans','Indy Sans Fallback',sans-serif;font-size:15px}.eSkAOW{margin:0 0 12px}.ctSnkl{height:380px}.cCOQKx{width:100%;height:51px}.NgRo{margin-bottom:16px;border-bottom:1px solid #919191}.ksidoU{margin-bottom:16px}.ksidoU [role='listitem']{position:relative;margin-bottom:12px;border-bottom:1px solid #d3d3d3}.ksidoU [role='listitem'] .sc-u4n1j-0{display:flex;position:absolute;bottom:16px;left:10px;width:32px;height:32px;align-items:center;justify-content:center;border-radius:50%;background-color:#ec1a2e}.ksidoU [role='listitem'] .sc-u4n1j-0>svg{width:90%;fill:#fff;stroke:transparent}.ksidoU [role='listitem']:first-child{display:block;padding-bottom:0;margin-bottom:12px}.ksidoU [role='listitem']:first-child .sc-u4n1j-0{top:-15px;bottom:auto;left:12px}.ksidoU [role='listitem']:first-child>*:first-child{display:block;width:100%;height:205px}.ksidoU [role='listitem']:first-child>*:last-child{--content-bg:#222;--content-bg-opaque:rgba(34,34,34,0.7);position:absolute;bottom:0;width:100%;padding:28px 12px 12px;background:linear-gradient(to top,var(--content-bg) 70%,var(--content-bg-opaque) 100%) no-repeat;color:#fff;font-size:17px;font-weight:bold}.ksidoU [role='listitem']:last-child{margin-bottom:0;border-bottom:0 none}.bhdekM{min-height:1924px}@media(max-width:767px){.bhdekM{display:none}}.dvQXpA{width:308px}.dvQXpA.hidden{display:none}@media(max-width:999px){.dvQXpA{display:none}}.article-liveblog .bZTaXI{background-color:#f7f7f7}.wQyIS{justify-content:center}.jQYxbM{justify-content:center}
Stay up to date with notifications from The Independent Notifications can be managed in browser preferences.
Not now Yes please
Climate News Buried mink may have contaminated groundwater in Denmark, scientists warn 'It is deeply worrying,' says water industry chief, amid fears it could pose risk to drinking water
Subscribe to Independent Premium to bookmark this article Want to bookmark your favourite articles and stories to read or reference later? Start your Independent Premium subscription today.
Subscribe Already subscribed? Log in Mink that were removed from cages were killed and buried in pits last month (REUTERS) Your support helps us to tell the story From reproductive rights to climate change to Big Tech, The Independent is on the ground when the story is developing. Whether it's investigating the financials of Elon Musk's pro-Trump PAC or producing our latest documentary, 'The A Word', which shines a light on the American women fighting for reproductive rights, we know how important it is to parse out the facts from the messaging.
At such a critical moment in US history, we need reporters on the ground. Your donation allows us to keep sending journalists to speak to both sides of the story.
The Independent is trusted by Americans across the entire political spectrum. And unlike many other quality news outlets, we choose not to lock Americans out of our reporting and analysis with paywalls. We believe quality journalism should be available to everyone, paid for by those who can afford it.
Your support makes all the difference. Read more Millions of dead mink that were buried in Denmark to halt the spread of coronavirus may have contaminated groundwater, an official study has reportedly found.
Water industry chiefs are warning it poses a risk to drinking water , and authorities are being to act quickly, Denmark’s Radio4 reported.
The Danish government ordered a cull of the country’s 17 million mink last month after outbreaks of coronavirus hit hundreds of farms and authorities found mutated strains of the virus among people.
Most of the animals’ bodies were buried in pits in a military area in western Denmark under more than six feet of soil.
But some resurfaced from the mass graves as gasses from the decomposition process pushed the mink out of the ground. The government considered digging up them up again to cremate them.
Now, the new study prepared by the Geological Survey of Denmark and Greenland and the Technical University of Denmark says groundwater may already have become contaminated by fluid from the bodies, Radio4 said after seeing a copy of the report.
Before the dead mink were buried, authorities had said the bodies would not pose a risk to drinking water or protected areas.
The Danish Environmental Protection Agency, which commissioned the report, is assessing the environmental impact of the graves, with results expected early next year.
The burial sites, guarded 24 hours a day to keep people and animals away, have drawn complaints from residents about possible health risks. Newspapers have referred to "zombie mink".
"Under a number of assumptions, the upper groundwater may have already been polluted," said Claus Kjøller, state geologist and a researcher behind the report.
One of the pits, in Viborg municipality, northern Denmark, is very close to the local waterworks.
"It is deeply worrying, and it confirms that when we have raised the issues we have raised, then there has been reason for it," said Susan Münster, chairman of Danske Vandværker, the industry organisation for Denmark’s water supplies.
"If it flows towards the drinking water, then it poses a huge risk," she told Radio4.
The Danish Environmental Protection Agency did not immediately respond to a request for comment.
A key recommendation of the report is to create a roof over the mink graves as soon as possible to prevent rain from accelerating seepage of harmful substances into the groundwater.
Additional reporting by Reuters
Thank you for registering Please refresh the page or navigate to another page on the site to be automatically logged in Please refresh your browser to be logged in
Join our commenting forum
Join thought-provoking conversations, follow other Independent readers and see their replies
Comments