CINXE.COM

<!DOCTYPE html><html lang="en-US"><head><title>Just a moment...</title><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=Edge"><meta name="robots" content="noindex,nofollow"><meta name="viewport" content="width=device-width,initial-scale=1"><style>*{box-sizing:border-box;margin:0;padding:0}html{line-height:1.15;-webkit-text-size-adjust:100%;color:#313131;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol,Noto Color Emoji}body{display:flex;flex-direction:column;height:100vh;min-height:100vh}.main-content{margin:8rem auto;max-width:60rem;padding-left:1.5rem}@media (width <= 720px){.main-content{margin-top:4rem}}.h2{font-size:1.5rem;font-weight:500;line-height:2.25rem}@media (width <= 720px){.h2{font-size:1.25rem;line-height:1.5rem}}#challenge-error-text{background-image:url(data:image/svg+xml;base64,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);background-repeat:no-repeat;background-size:contain;padding-left:34px}@media (prefers-color-scheme:dark){body{background-color:#222;color:#d9d9d9}}</style><meta http-equiv="refresh" content="120"></head><body class="no-js"><div class="main-wrapper" role="main"><div class="main-content"><noscript><div class="h2"><span id="challenge-error-text">Enable JavaScript and cookies to continue</span></div></noscript></div></div><script>(function(){window._cf_chl_opt={cvId: '3',cZone: "publications.waset.org",cType: 'non-interactive',cRay: '9136b68c5c4ca042',cH: 'AOeCTsWlxVurNhAcZnIZ.HWiYfrjeKfGLjGoobMxqp0-1739805119-1.2.1.1-8kzPisuLhssEdLE.Ric6xeDb0u.DdVBnz77dizCp7_rhFWZd6r9f0u.6KCMs3DA.',cUPMDTk: "\/abstracts\/search?q=non-point%20of%20source%20pollution&__cf_chl_tk=poA4BGWLVzHk44TuYx65Iup9ahyXoUXRM_4pN2xtqVI-1739805119-1.0.1.1-.v3Lw3dOgDASk9CmA6JwAWMQFHk0Idf1WYsue57diWo",cFPWv: 'g',cITimeS: '1739805119',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/abstracts\/search?q=non-point%20of%20source%20pollution&__cf_chl_f_tk=poA4BGWLVzHk44TuYx65Iup9ahyXoUXRM_4pN2xtqVI-1739805119-1.0.1.1-.v3Lw3dOgDASk9CmA6JwAWMQFHk0Idf1WYsue57diWo",md: "qWq4g0vAgQNQc_gVhtZxQw6lhRSLrstKqgBaGlr70HA-1739805119-1.2.1.1-K1MuT1PdG5ppHSI9mA_XE_5UjQarNB3yP.3lxZpz4uMp04P6H9TzCco1Uv1z5HYdPDkUC_wP5EZ9CQM0cKPFxtnVftSNBAaDGLUUnBMYNfHh4QQxaRx82auVndCiipP.pEw8ecRbOp9leYO.C00ia2f8995b6JNlwzYaJyPMt3YePiu.dx7z89GjMesFg5mtxO0MgezxkrSA6fKDoRbQNAfYnfifhRPYbca606cdoCYowqvwihegvj3U_DOau.F3uFxYvxQwK53wFdJHm4O3wlWJYliobJEGE8urX8XRSk6TCjcpvkiK8pdzbD8DevjfovpIEDaXn.CmvUdMAJLWaki_lGS464ddaL3zsAYU5q71SFJtUNPR3e7pIX_MpldGyNW4jMiuW56KLd4lF4bZOwlHRc8dBR2Y1pvOAkodafHeI1J0IfkR3zwleVt3q3vxnJOy5IS0xZuVXIcs.ZtJdVoWLNN4w2cWnyM7k_4B_WbD7l4jiYYNTv_uX6UIKykjbgAzgaYy2XJlCcfYHbO0ovnsXdYkw9Upo9oXEepQxAEui3iKq9F2rFGaYPNxPSYi_F.mbciccyAiFnQ212Yz6LmZrJ4jzaNsKOArkqut4spssXMlumhVzFxVRJkqh.1OI03akBSunVSlb3JTq7SRjTcql9oR2lsFpAuhjfPJ2JemIFAi_9zW_omuQdWDKFyqOeIeyeHhja57I6LE7F.FddXp3yMmDMcxvvzkJ_ZM32UOoT8iytMHw.ARXUaqZJf43CQ9D3wHk7uOw1snKxSblvCCBNLhzppAwo3RFUM3ncWIaQs9.lqGAEYJm6ZB3vT11lF0rPwV6W2ytk.PSSII09YFpJZjt3z.doHvcbw.2JscVBTYDSa4HNW.C0lXyraFh2kQAMpjq.Pmzcc6UyeV4u.xtMMYzSruqcugle_P5OBz3KSv17TYug4oSSR5rlifudltGHdqO_LdN8p8SlNuOfF5JjJb.iHj24uNxyUGu1cNKmdvQtzxl_ZZ9PtQFsyN3IZiCtO6sjaRGoCbUrat2RQA5sbfW2nXtztQI4yBU1WJe3Bs44RtPcZK2CTom1Epdyj3buAEllIBK_P7kbvGuECnLtbWZS5YnSpvTcb_I1MDcV.M9dnDpCvRQnaeGlCGPIfsGuxrrxcFJZawR7z3788M8F4Q6kecCseZMj2M5ClTvCr.syRZHu8A2A0Vj7ba2tw_TRdrgJHouV1fYrqlqIG9mT7sSkrZiDSVuCUWWUaU6Sp.q5YuRM4yvp7zYzaRnYoLROpD08p3RGspDeR1PTC7c7kT9YIodClt1L7J6vtd97LuTOZBCCj29TXFdYwkcPLcD2aNeIicB_3TVvef2xOE8SCCL.P_134oVzk1iiJMn0ia3hX8pljtHIfRcxe9CRMhvQ5k4kGn_Ha2TvZd.1MLrXv_1o8JqpMyB8LnHr6ijN98ee4DGKCObG9zGGXppunH_ziYZ_xJ5cvakBiavbx5FFwavEnmQyt5cZdlSiwcnxoE172ZKH1BRFz4xMFiXgyVFVRbItjbS1L87t0IQQpeeg_1Sl02gD.h4Bft.aH9Z2q74JzA3ORcOLN9t6cKbObeMn7r7i3K1uz9ncSXBH4z44A4oZtATCJO1E8nbjLlqe9qG66wDv1ACYKVuv6_Io31u4w.kUxYlg2g7m0aPE5zVzXrHlKpE_zIHYmc5qL_JdfzzCL2r.XLJQ3x9lPPognM.Xjx74BPbhfisAT08O90yClChyqnIImwTqgD2nP_5goG8lSj1deRuI3SepC0WXbxtOMfZLuLucPU6gJ7NH9u2z9Rj1H44NdGz6MqqXE6t9hoTDfsffoOz0ll84S2K2h6TnfBiwukAD6XcPFL_vhChIOjY_NEasLZkPbybgrxNLLL.43eK49QapV_O1WocT0lQWtAJficrhdVla.Zy4yW3M9YRX6Y7R0LVolSlEWCHjNNWruqdF6wB575qxZrWgQLsYTFyWrFEkq_mhPxUQ",mdrd: "u7qkkXRnH0VJg8RXuuApcIridnPMTMh_snls6p_mjOk-1739805119-1.2.1.1-r3lWgbUqRMOYYEz0q_pca18cTC7vApnPDHAtZQtdTOzPdsn6wXzmlcLWXBISdUjkwIs19pAZQaNqqCI28pA3voUCxc89CLt60mtApHWCQxvduvLcvrJ.tFGwJtR1R2dnCTGiS5axFr9hkG1TVEpWjWLs5_zzChNGnX49vIRgVtvf0OAdox8fmDNV1qxfLm.jGxoRRV2jyoV0PhAJHotGTTEuQ2II8bVCV6qNYQ3KeTidFmTeRQJsrIEeAoRsZM724l_OjndOg1B21MkzzsslDpngFFoanS3q79msd_RAgQrFtpYZhN7c8KrD3FcZalczrz1adv8oW0NlwPbkc28tBzCteI6MlKSgJyoOTi1SsBQqXZz1mlFMrPMQEB1i1XAI1K5KDAPbNnUne1NxKqcihDxebNyQ3v11MjPdTPKPq5CFQGgGwS0Afmrbqf14HTkvqLhh37ml3M21Z00mbgEVsCH8p9vF82lr2w19fnhNdJQHrslLlgwog8SUxgLWDrx72_x_.XFvtpgtY331rXs0qQ.pmrEQYh84uJwbFpQa4tpfVkkH.EgpJFqj1wO9HiPLkqBHrByukM_LdZc7NOl7bdNQZiOffAdFiVEokDTO9GyJ4_68Oylt0Zy4secsxlNo5sxo2j1QNza3uDj.I1vB7BRvxFzQoZ0Vuk56XQp7H6rDw9C2PUuHhF2JxftLUQ0q0QTibsVSj_dj8tba1AZWwyWTmxqvhKy_z2iy28l3R7uME7KdTgUAh3OTn8B520eCu6axF9TphLZtPrVcSDYkDwIeccICAaC6Hi3IUd508DO.t52p.TEVVGik1xQ4Ek7FpqxVzUB6i5mZZgLIpJxV0FJUXKE1zzvcNNepJMlR2E2TKvAGuHHYMau_netu1USUwXhxl.KIzAn0I74mxsIwv7ebwkgXmC0ugmhUR60Z7kxmkpEgMNAqTqemEqGi.AfveYgqufgG.VX_8pd2h7pQ.K6KZmKa3k_6EV2Eb3HXyeDI8wmtQl_otZLxRo1Lsz.ltpOpq8baXqe3ZaPK.4pl0L6J9GULnpObNXT.YYXMAUboTIDDh9jlb7454cB_1jVn9HIJr6OVKa5.zF_u7Dfa41h9MveaJs27S4HFIsdEkD8CxC.AR00GxF050mr.mG55gcOIIqP2Gdcu8D5EGe83PSdjCGXbPIO3xfoH6ymL8q9v3_WpN0lt49KMGICTW7wFEE_tpYAktahKXYQwQegfsO6XeSs0437uO8VMO3FFNjuSsV.93_lWt74d0d6cVrDe464.M8RAENwMuS20IiF8V5R41hU.VO3ewY0LmbnXa4xG8CFy8uPSJ_4so0cblHlvxShJfjb0oHE.JLaHLkcaQfBcJq2mQoFWQ.S_I6veyumNnnyPLPQVpQJxLlWx8RdybyidXp9zCTZeYuc4vyf3NALTDvdcZJ7IF7lTcCOHN81xAqpf7TfjJJmrwmn5EvAVdUUDeIvrYaLceAS6h.SBjZ2R3pDtiZpJLQxrdbx4z.kGZdh_r.AWzFA8Khgy4J_3M1KH1F_QU_pP5ReIJ8QmxU138R33Y3tv8TxFWMTZezCGWcT7NS8ULQ5fScz.jWjD9cZXacUnAcRiFbM.0XTFnqYskN3KOXDRdw77k3sUXadU.lQDEL0ZRUT70l9g0xJ9J974uDklyY9GGMafBbcjlUyiywNSD6v3faDKvIUQQApkifQ5blsq_AAnq7Ygcev8pXA1h.lFsvk84O5TRssFrNDaOya4efPqlngJ.lG0va8ktx8Iatv43giGmcgEkQiLJjEdq0Q.pnpFRdeSQ0BjU0J4TjNR6zpKj3MtvUrO0E5Z5MbNmW2aywgnecOoWI_uq9Lglj6tQd_MuiVzFS5ZULIBMnl.9y9RlUn5Rr6KhXomDn6eYbscnj2lMjJ_FGXyEIn75uurCgUQtvRdaFEtSP45ehVk4bwi1M71rk8p7RRurVcl_lSIBC3SSXlv1DOy5tgb1igk1FX0RAESugsuyA"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=9136b68c5c4ca042';window._cf_chl_opt.cOgUHash = location.hash === '' && location.href.indexOf('#') !== -1 ? '#' : location.hash;window._cf_chl_opt.cOgUQuery = location.search === '' && location.href.slice(0, location.href.length - window._cf_chl_opt.cOgUHash.length).indexOf('?') !== -1 ? '?' : location.search;if (window.history && window.history.replaceState) {var ogU = location.pathname + window._cf_chl_opt.cOgUQuery + window._cf_chl_opt.cOgUHash;history.replaceState(null, null, "\/abstracts\/search?q=non-point%20of%20source%20pollution&__cf_chl_rt_tk=poA4BGWLVzHk44TuYx65Iup9ahyXoUXRM_4pN2xtqVI-1739805119-1.0.1.1-.v3Lw3dOgDASk9CmA6JwAWMQFHk0Idf1WYsue57diWo" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>