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Pass on Grease

Often times preparing  meals result in lots of waste fats,oil and grease.  Fats, oil, and grease are collectively referred to as FOG.  

 The City of Sedona Wastewater Department requests that you not place fats, oils, and grease down your sewer drain.  The reason is that these things clog sewer pipes like our arteries plug with plaque. Although FOG may be liquid when they are poured down your drain, as they travel miles in the sewer they cool and solidify.  As FOG solidifies it builds up on the walls of the sewer pipe.  This reduces the space in the pipe available for sewerage flow.  If  space in the pipe is reduced enough the sewerage will flow out of the  manholes, other surface openings onto the ground .

 

You can reduce the amount of FOG in the sewer system.  The Wastewater Department offers these suggestions:

 

1.      Consider saving the fat, oils, and greases for reuse. You may find this link informative.

 

2.      Pour liquid grease and oil into containers such a cans, bottles, and milk cartons.  Dispose of these in your garbage can.

 

3.      Scrape plates, pots and pans over the garbage.

 

4.      Reduce food grinder use. Many foods, such as vegetables contain significant amounts of FOG.  Grinding frees the FOG from the food.  

 

 

The City of San Diego has produced an informative video on this subject.  You can watch it by clicking here.

  

 
Sedona Receives Awards at
Arizona Forward’s 34th Annual Environmental Excellence Awards Ceremony
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Award of Merit
 
On September 20, 2014, three entities from Sedona received awards at the Arizona Forward 34th Annual Environmental Excellence Awards ceremony, held in partnership with SRP.

The Sedona Fire District Fire Station No. 6 (LEA Architects, LLC) received top honors with the Crescordia award in the Governor’s Award for Energy & Technology Innovation for Northern Arizona category. The coveted Crescordia – a Greek term meaning “growing in harmony” – is given as the highest honor in each category.

The City of Sedona nominated the Sedona Wetlands Preserve and received an Award of Merit in the Environmental Stewardship – SRP category for Northern Arizona. In addition, Keep Sedona Beautiful (KSB) received the Award of Merit for Environmental Stewardship.

Nearly 100 entries were received in Arizona’s oldest and most prestigious awards competition focusing exclusively on sustainability. Arizona Forward and SRP presented 20 first-place Crescordia awards and 24 Awards of Merit. The winning projects set standards for achieving a balance between the built and natural environment in Arizona’s physical, technical, social and aesthetic development.

Arizona Forward is an advocate for a balance between economic development and environmental quality, and convenes business, community and civic leaders in thoughtful public dialogue on critical sustainability issues. The Association is a blend of members including large and small businesses, government jurisdictions, the education and non-profit communities, as well as others that share a goal of promoting cooperation to improve the environment and quality of life in Arizona. For more information, visit www.arizonaforward.org. 
 
 
  

The Quality of Treated Water

The City has undertaken several tests to gain a better understanding of the quality of its treated water at the Wastewater Reclamation Plant.  This includes testing for the presence of Constituents of Emerging Concern (CEC) in the treated water and comparing the water's quality to State and Federal drinking water standards.   The City has performed this investigation as part of its evaluation of a program to develop injection wells which will put treated water into the aquifer below the City’s Wastewater Plant.  Reports on these test have been provided to the City.

CECs  are   chemical compounds, many of which are  found in items such as pharmaceuticals, personal care products ( for example deodorants, make-up, lotions, shampoo),  food additives ( for example caffeine, sweeteners, preservatives), and other consumer products.    Chemicals from these products enter the waste water system as we dispose of water used in  pools, restrooms, showers, and other places.  The waters draining to the wastewater plant contain high levels of chemicals from these products.   Even after treatment, although over 90 % of the chemicals may be removed, some remain and can be detected in parts  per trillion using modern testing methods.[1] The concern arises because the presence of most of these chemicals in drinking water is generally unregulated and their potential for health impacts in drinking water has not been fully assessed. The City has tested for the presence of  over 100 of these constituents. [2]

A report completed in August 2014 states none of the CECs tested for were found in the water samples from Arizona Water Company and Oak Creek Water Company.  In Oak Creek (the stream not the water company)  only DEET, an ingredient in insect repellent, was found using current detection methods.   The treated Wastewater Plant water contained higher levels of CECs. This is not totally unexpected considering the focused disposal of these compounds in the relatively limited quantity of water in the wastewater system as compared to an aquifer[3].   On average the City’s current treatment process reduces the levels of the analyzed CECs in the water by about 90%[4].    These levels are well below the levels developed by the WaterReuse Research Foundation in their recommendations for direct potable reuse.[5]

The quality of water at the plant has been compared to State and Federal drinking water standards.   To date the it has  been determined that the treated water meets drinking water standards, although the City is not using it for drinking water.  Current State regulations do not allow it to be directly used as drinking water. 

Below are links to the various reports the City has conducted and the text of a statement by Dr. Shane Snyder to the Senate Subcommittee on Transportation Safety, Infrastructure Security, and Water Quality in April 2008. 

Dr. Shane Snyder

February 2014 Report  (full)  (Short)

August 2014 Report (full)  (Short)



[1] One part per trillion is 1 drop of water in 20 Olympic-size swimming pools (13,200,000 gallons)

 

[2] There are hundreds of compounds but the  ones tested are common in municipal wastewater

 

[3] Drinking water for the City of Sedona is drawn from aquifers below the City.

 

[4] If the impact of the sweetener Sucralose is removed from the result the process removes 99%.

 

[5] Direct potable reuse means no further treatment of the treated wastewater before using it as drinking water. Water injected into the aquifer at the Sedona plant would receive additional treatment through dilution and subsurface movement of the water.