3   paloma aguirre - water quality issues and the solutions in the tijuana-san diego border region
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3 paloma aguirre - water quality issues and the solutions in the tijuana-san diego border region






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  • Introduce self and talkaboutwhyyougotinvolvedwith WiLDCOAST. Exposedto a potentiallylifethreateningdisease.
  • Totalkaboutwaterquality in theborderregionweneedtotalkaboutthe Tijuana RiverWatershed as itisthemostpollutedbody of water and mainpolluterforborderregionbeaches. Cover Tijuana RiverWatershedstats. Tijuana River Valley, Estuary and new Marine Protectedarea at the Tijuana Rivermouth¾ in Mexico ¼ in U.S. Dischargessouth of Imperial Beach. The TJ Riverisonly a seasonalriver and flowsduringorafter rain events in thewinter. It can carry up to 3 BGD
  • Tijuana is on of the fastest growing cities in latinamericaIt is a popular tourist destinationIt is rich in art and cultureBut one of the main reasons it grow so fast is due to free trade agreements and a very high employment rate compared to third world countriesAbout 90% of the electronics we purchase in the U.S. have been assembled in TijuanaTextiles, car parts, metal industry, furniture etcBecause of the
  • Unregulatedurbandevelopments are one of themainsources of pollutionbecausesome of theseneighborhoodsdonthaveenoughinfrastructuresuch as sewagecollectionortrashcollectionservices. So thelocals are forcedto use creekbeds as landfills. Many of thesecreeks are tributariestothe Tijuana River and uponthefirst rain flusheddown and acrosstheborderwastewater and trash
  • So why do theseareasdonthaveenoughinfratrastructure?Beacuse a severelack of rfinancialresources. As you can seeherethese are the 2013 budgetsforthecities of Tijuana and San Diego. Tijuana and San Diego haveroughlythesameamount of residentsyet Tijuana only has about 14% of itsresources.
  • Mentionthecleanup and theslaughterhouserightnexttothecleanupsitethatdrainedintothecreek.
  • June 2010SewagespillDecember2011 40 MilliongallonsewageApril 4 2012 4 milliongallonsewagespillApril 22nd 3 milliongallonsewagespill
  • March 18 2013 sewagespill happening duringwhilethispicturewastaken. Itwas a holiday in Mexico so no onewasnotifiedbecuaseoftheholidaysUntilwewenttoinvestigatethesourcethe of weirdsmells in Imperial Beach itwasmadeknownthat a sewagespillwas happening in Playas, where a pipeline hadbroken and wasspillingrawsewagedirectlyintothebeach
  • A differentsource of pollutionotherthanailingsewageinfrastrastructure and the Tijuana River are theeffluentscomingfromtheNorthern Baja coastaltreatmentplants. Unfortunately, most of theseplantsonlytreatwastewater at a veryrudimentarylevel.
  • Forexamplethe San Antonio de Los Buenos Sewagetreatmentplantlocatedjustnorthfromhere. AS you can see in thepicturethehavesedimentationponds and chlorinatetheeffluentbeforebeingdischargeintothe surf zone. AdditionallyMexicanpolicydoesnotrequiresewagestretamentplanteffluentto be discharged offshore as the U.S. Does. So thereis a higherprobabilityforhealthimpactstooceanusers. Anotherexampleisthe Rosarito sewagetreatmentplantjustnexttous, thatneedto be updgraded.Depending in oceancurrentdirectionthisflowparticularly in thesummerwhenwegetthesouthswells can impactbeachwaterqualityalltheway up to Imperial BeachAlso, anotherissuesspecifictothisarea in Rosarito are theresidentialdevelopmentsonthehillsides.Sometimethesedevelopersibtain municipal permitforconstruction and committtobuilding and maintaingthereown micro sewagetretamentplants. Butthenthisbecomestoocostly and theysimplyleavethem. Aso youhavemanyissueswithrawsewageflowingstraightdownhillintotheocean.
  • A newthreatthat has recently emerged istheunseasonalcross-borderflow in the Tijuana River.
  • Twostate ofthe art sewagetreatmentplants in Tijuana called Arturo Herrera and La Morita are treating a largesection of thecity’ssewagetotertiarylevels. Thistreatedeffluent can be usedforirrigiationorother beneficial uses. Unfortunatelythestaetpublicservicescommissiondoes no havethenecessaryinfrsatructuretoconveythistreatedeffluent and isforcedtodischargeintothe TJ River, whereis mixes withrenegadeflows and otherpollutants. Approximately 16 milliongallons of thistreatedeffluentisdischargedintotherivereveryday. A pumpstationcommonlyknown as the CILA divertersystemwas placed right at theborder and ismeantto capture thisunseasonalflow and redirecttothe SAP treatmentplantpreventingitfromcomingacrosstheborder, yetit has onlylimitedcapacity and alsobreakdownduetothesystembeingoverwhelmed and in need of maintenance. Whenthishappensit has to be turned off. Theflowthen comes across and flowallthewayintotheoceanimactingbeachwaterquality as farnorth as IB orsouth as Playas de Tijuana
  • 3 in 5 OceanUsers in Imperial Beach ReportOcean -relatedIlnesses
  • SDSU School of publichealthttooksamples of the Imperial Beach pier and the Tijuana Rivermouthafter a rain event and foundthereis a one in ten chance of contracting Hepatitis A aftercoming in contactwithoceanwaterpollutedbythe TJ river.
  • Detection of viruseswaspositivelycorrelatedwiththepresence of infectiousviruses. Furtherresearchisneededto determine ifdetection of virusesbyrapidmethodssuch as RT-QPCR can be a usefulwaterqualitymonitoringtooltoassesshealthrisks in recreationalwaters.Journal of Water and Health
  • Local inter-agencyworkinggroupssuch as theCleanBeachesCommittees of Playas and Rosarito haveprovento be a venuetoaddressthesewaterqualityissues and collaborationbetween agencies at thelcoal, state and federal level as well as NGO’s and memebrfromthe academia
  • The ITWP in San Ysidro CA right at theborderwasbuilt in the 90’s under a binational treatyagreementbetweentheInternaitonal and BoundarywaterCommission and itsMexicancounterpart CILA. Thispplantcollectssewagefromthecity of Tijuana and treats in the US. at a sharedcost. WilDCOASTamongmanyotheradvocacygroupshelpedpass a 66 milliondollarupgradethatwasrecentlyfinsishedtonowtreatsewage at advancedprimarylevels.
  • WILDCOAST throughtheCleanBeachesCommittee has beenawarded a granttoconduct a beachwaterqualitymonitoringprojectto revise and upgradethebeachclosureprotocal and publicnotificationsystem. Throughtehsefundsbeachsignswill be purchased, managed and placed bythe local Playas lifeguards.
  • Asmentionedearlierthe new sewagetreatmentplants in thecity of tijuanahavesome of themoststate of the art treatmentfacilities and in thefutureitishopedthatundergoinganadditionallevle of treatmentcouldprovidedrinkingwater in thefuture

3   paloma aguirre - water quality issues and the solutions in the tijuana-san diego border region 3 paloma aguirre - water quality issues and the solutions in the tijuana-san diego border region Presentation Transcript

  • Beach Water Quality in Southern California-Northern Baja CaliforniaThreats, Impacts, ImprovementsGlobal Wave ConferenceRosarito, Baja California, MEXICOMay 6, 2013
  • Threats
  • High Inmigration Rate Due to Free TradeAgreements like NAFTATijuanais one ofthefastestgrowingcities inLatin-America
  • Unregulated Urban Developments or “Shanty Neighborhoods”
  • Insufficient Financial ResourcesCity of San Diego:2 million residentsBudget: 2.7 billion dollarsCity of Tijuana:2 million residentsBudget: 391 million dollars
  • Rural Conditions
  • Aging Sewage Infrastructure
  • Sewage Spills
  • Inadequate Public Notification of Sewage Spills
  • Insufficiently Treated Sewage Effluentfrom CoastalTreatment Plants in theBorder Region
  • San Antonio de Los Buenos Sewage Treatment Plant or“Punta Bandera”
  • Unseasonal Flow in the Tijuana River
  • Impacts
  • High Level of Ocean-Related Ilnesses Reported
  • High Levels of Hepatitis A in Coastal Waters Impacted by Tijuana RiverPollution
  • Study published in the Journal of Water and Health Found:High Viral Count of Entero and Adeno- VirusesHigh concentrations of viruses found incoastal samples collected at:• Baja Malibu, Baja CA• Punta Bandera, Baja CA• Tijuana River Mouth
  • Improvements
  • Local Inter-Agency Working Groups
  • Multi-million dollar upgrade toIWTP
  • EPA-Funded Project to Improve Water Quality Monitoring atPlayas de Tijuana
  • Two New Sewage Treatment Plants Arturo Herrera and La Morita
  • Upgrade to Rosarito SewageTreatment Plant.2014?
  • Upgrade to the San Antonio de losBuenos Treatment Plant (PuntaBandera)
  • Moving Forward
  • Improvements Needed1. Increase the number of sampling sites inthe Rosarito–Playas de Tijuana region toimprove water quality monitoring for oceanusers and beach goers.2. Revise and improve beach closureprotocol and public notification.3.Scientific research is needed on the publichealth impacts to ocean users in theRosarito-Playas de Tijuana area.
  • Conclusions
  • Surfers play a vital stewardship role in beach water quality monitoring andimprovements. Education and awareness are key in pushing forward solutions.
  • Gracias!Paloma AguirreBorder Conservation Directorpaloma@wildcoast.net