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Government strategy

The National Water Plan 2007-2012, aims to recognize how valuable water is and promote its sustainable use thereby ensuring water quality and quantity.

The eight objectives of the plan are: (i) improving agricultural production, (ii) increasing access and quality of water supply as well as sanitation services, (iii) river basin level water resources management promotion, (iv) upgrading water sector administrative, technical and financial development, (v) encourage water users and the rest of the society to contribute in water management, (vi) lessen risks from water, (vii) estimate the impacts that climate change may have on existing water resources and (viii) ensure that everyone complies with the National Water Law . Water quality

Water Quality Index has shown astonishing figures with 96% different levels of pollution in Mexico’s surface water bodies and 100% pollutants concentration in the Valle de Mexico region. This condition is mainly due to the untreated disposal of the water, solid waste deposits into rives and lakes, and the absence of control of seepage from unsanitary landfills. Engineering strategies: Wastewater treatment The wastewater treated in wastewater treatment plants in Mexico State are used for local reuse projects including reestablishing groundwater, as well as for irrigating agricultural and urban landscapes.

The untreated portion

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is discharged to the drainage system reused in irrigated agriculture. Combined sewer system • Singled combined sewer system for Greater Mexico City collects municipal waste, industrial waste and storm water. Artificial ground water recharge Artificial ground water recharge is being used in Greater Mexico City utilizing both flood water and treated wastewater. Earlier projects were involved only in channel modification, runoff retention, as well as surface spreading and infiltration wells.

The Texcoco Project is about indirect potable reuse of wastewater done by artificially recharging the aquifers and final effluent is used in infiltrating ponds or injection wells. Environmental strategies: Water challenges Major water challenges are land subsidence, groundwater overexploitation, the impacts of increasing urbanization, chance of major flooding, less water quality and an unbalanced supply, improper water use, low level of wastewater treatment, health concerns in reusing wastewater for irrigation and not cost effective methods.

Greater Mexico City lacking infrastructure for monitoring the water supply is a long standing challenge. Groundwater overexploitation Due to population exploitation in the Greater Mexico, there is a problem for the water resources. There are different types of water resources such as the groundwater (59. 5 m3/s) which is the major source of water and imports from Lerma Basin & Cutzamala System (20 m3/s) and rivers and springs contributing with 2. 7 m3/s. The amount of water used for the municipality (64. 7 m3/s) is very high compared to the usage of other sectors industries (4. 6 m3/s) and agriculture (12. 6 m3/s).

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