Wastewater Effluent & Reclaimed Water:Innovative Strategies Now

and into the Future

Arizona League of Cities & TownsAugust 21, 2014Phoenix, Arizona

Kathleen M. Chavez, P.E.Water Policy Manager

Pima County

Southern Arizona Water Users Association

Goals & Objectives

A Proactive Forum to Protect the Quantity and

Quality of Water Resources Within and Available to

Southern Arizona

15 Members

Avra WaterBKW FarmsCommunity Water of Green ValleyFICOFlowing Wells IDKai FarmsMarana

Green Valley DWIDMetro DWIDOro ValleyPima CountyRed RockSahuaritaSahuarita WaterTucson Water

Pima County

2010 Population 980,000

Unincorporated Population 353,000

Five Incorporated Jurisdictions

85% Land is Federal, State or Native American

Nine Wastewater Reclamation Facilities

3,400 miles of Sewer

Reclaimed Water Production2012: 66,900 acre-feet*

61,393 AF

3,698 AF

896 AF 511 AF 295 AF 100 AF

Pima County Metropolitan 92%

Pima County Non-Metropolitan 6%

Town of Sahuarita 1%

Saddlebrooke Ranch 1%

Town of Marana <1%

U of A Tech Park <1%

Reclaimed Water AllocationsMetropolitan Facilities

2012 Allocations• SAWRSA 46%• City of Tucson 41%• Pima County 5%• Metro Water 4%• Oro Valley 3%• Flowing Wells 1%• Spanish Trail < 1%

• Conservation Effluent Pool* 0%

What Does Everyone Do With Their Water?Allocation(AF/yr)

Direct Reuse

Off Channel Recharge

In Channel Recharge

Long-Term Storage

Outflow at Trico Road

City of Tucson 25,092 √ √ √ √ √

Bureau ofReclamation 28,200 √ √ √

Pima CountyMetro 3,319 √ √ √ √

Pima CountyNon-Metro 3,698 √ √ √

Metro Water 2,172 √ √ √

Allocation(af/yr)

Direct Reuse

Off Channel Recharge

In Channel Recharge

Long-Term Storage

Outflow at Trico Road

Oro Valley 1,929 √

Sahuarita 896 √ √

Flowing Wells 639 √ √

Saddle-brooke 511 √ √

Marana 300 √

Spanish Trail 43 √ √

Water Quality Upgrades

Plant Interconnect

Agua Nueva WRF 32 mgd

Tres Rios WRF 50 mgd

Class A+ Water

Regional Optimization Management Plan

Opportunities

Environmental Restoration

Reclaimed Water Strategies

Production

Allotment

Utilization

Long-Term Storage

Water Quality

Opportunities