Water Quality Report 2015

Water Quality Report 2015

Is my water safe? This report is a snapshot of your water quality. Included are details about where your water comes from, what it contains, and how it compares to standards set by regulatory agencies. We are committed to providing you with information because informed customers are our best allies. View Report

Water Quality Report 2014

Water Quality Report 2014

Why do I need to read this? In 1996, Congress passed amendments that require drinking water systems to give consumers important information about their water, including where it comes from, what is in the water, and how your water quality compares to federal standards. This report is brought to you in accordance with EPA's 40 Code of Federal Regulations NPDWR Parts 141 and 142. We want you to understand the efforts we make to continually improve the water treatment process and protect our water resources. It is recommended that you keep this report as a reference source, as it provides useful information, as well as contacts and phone numbers you may need from time to time. View Report

Water Quality Report 2013

Water Quality Report 2013

The Water We Drink In 2013, TOUA served approximately 3000 water customers on the Tohono O'odham Nation. The water supply came from 62 ground water wells located in and around Tohono O'odham communities. Approximately 1.0 parts per million (ppm) of chorine (12.5 % sodium hypo- chlorite solution) is added to the drinking water supply at wells sites to provide assurance that water delivered to customers will remain free of microbiological contamination. This is also ensures that the water meets microbiological drinking water standards from the time it is pumped from the ground until it reaches the customer's tap. Veiw Report

Water Quality Report 2012

Water Quality Report 2012

The Water We Drink The TOUA Water Department professionals within the Tohono O’odham Nation are very proud to provide you with the 2012 Annual Drinking Water Quality Report in order to keep you informed of the water quality and services we delivered to you over the past year. Our primary commitment is, and always will be, to provide you with a safe and dependable supply of drinking water. If you are a non- English speaking resident you may call TOUA at 383-2236 for a Tohono O’odham translation. The Utility Authority has regularly scheduled board meetings. If you have any questions about the meetings, this report, or questions concerning your water quality, please contact the water quality control laboratory at 520-383-5832. We want our valued customers to be informed about their drinking water quality. View Report

Water Quality Report 2011

Water Quality Report 2011

The Water We Drink In 2011, TOUA served approximately 3000 water customers in the Tohono O’odham Nation. The water supply came from 65 ground water wells located in and around Tohono O’odham communities. Approximately 1.0 parts per million (ppm) of chlorine (12.5 % sodium hypo-chlorite solution) is added to the drinking water supply at well sites to provide assurance that water delivered to customers will remain free of microbiological contamination. This also ensures that the water meets microbiological drinking water standards from the time it is pumped from the ground until it reaches the customer’s tap. View Report

Water Quality Report 2010

Water Quality Report 2010

The Water We Drink In 2010, TOUA served approximately 3000 water customers in the Tohono O’odham Nation.The water supply came from 66 ground water wells located in and around Tohono O’odhamcommunities. Approximately 1.0 parts per million (ppm) of chlorine (12.5 % sodium hypochloritesolution) is added to the drinking water supply at well sites to provide assurance that water delivered to customers will remain free of microbiological contamination. This also ensures that the water meets microbiological drinking water standards from the time it is pumped from the ground until it reaches the customer’s tap. View Report

Water Quality Report 2009

Water Quality Report 2009

The Water We Drink In 2009, TOUA served approximately 3000 water customers in the Tohono O’odham Nation.The water supply came from 66 ground water wells located in and around Tohono O’odhamcommunities. Approximately 1.0 parts per million (ppm) of chlorine (12.5 % sodium hypochloritesolution) is added to the drinking water supply at well sites to provide assurance that water delivered to customers will remain free of microbiological contamination. This also ensures that the water meets microbiological drinking water standards from the time it is pumped from the ground until it reaches the customer’s tap. View Report

Water Quality Report 2008

Water Quality Report 2008

The Water We Drink In 2008, TOUA served approximately 3000 water customers in the Tohono O’odham Nation.The water supply came from 68 ground water wells located in and around Tohono O’odhamcommunities. Approximately 1.0 parts per million (ppm) of chlorine (12.5 % sodium hypochloritesolution) is added to the drinking water supply at well sites to provide assurance that water delivered to customers will remain free of microbiological contamination. This also ensures that the water meets microbiological drinking water standards from the time it is pumped from the ground until it reaches the customer’s tap. View Report

Water Quality Report 2007

Water Quality Report 2007

The Water We Drink In 2007, TOUA served approximately 3000 water customers in the Tohono O’odham Nation.The water supply came from 66 ground water wells located in and around Tohono O’odham communities. Approximately 1.0 parts per million (ppm) of chlorine (12.5 %sodium hypochlorite solution) is added to the drinking water supply at well sites to provide assurance that water delivered to customers will remain free of microbiological contamination. This also ensures that the water meets microbiological drinking water standards from the time it is pumped from the ground until it reaches the customer’s tap. View Report

Water Quality Report 2006

Water Quality Report 2006

The Water We Drink In 2006, TOUA served approximately 3000 water customers in the Tohono O’odham Nation. The water supply came from 73 ground water wells located in and around Tohono O’odham communities. Approximately 1.0 parts per million (ppm) of chlorine (12.5 %sodium hypo chlorite solution) is added to the drinking water supply at well sites to provide assurance that water delivered to customers will remain free of microbiological contamination. This also ensures that the water meets microbiological drinking water standards from the time it is pumped from the ground until it reaches the customer’s tap. View Report

Did you know?

Drinking water is a very highly regulated utility.  The United States Environmental Protection Agency, Region 9, in San Francisco, California sets standards for approximately 90 contaminants in drinking water.  Each of these contaminants has a legal limit we are not allowed to exceed. This is known as a maximum contaminate level (MCL).  Every gallon of drinking water delivered to your home from one of TOUA’s community water systems must comply with each and every one of those contaminant limits.  It does not matter what you use that water for; i.e. Drinking, cooking, watering the lawn, or filling your toilets, all of it meets the safe drinking water standards when it is delivered to your home or business, or we have to tell you it does not, and tell you what we are going to do about it to fix it.

Did you know?

Today TOUA currently operates and monitors 67 groundwater wells that serve 32 community water systems throughout our service area.  Those numbers are down from 2006 when we had 73 groundwater wells to serve 40 community water systems.  Over the years, TOUA has been able to intertie different distribution systems to a larger supply of water that serves more than one community. This allows or a more reliable quantity of water and in most cases a better quality of water.  It also reduces the chance of running out of water by having two or more wells that supply water to an area instead of a single water well.

Why would we want to get rid of a water well that was already drilled?

All of our wells pump a different amount of water. Usually referred to as gallons per minute (GPM).  Some of our wells only pump 7 or 8 GPM where some other wells may pump 400 to 600 GPM. When we can inter-tie a couple of communities, that each had only one well, with an area that has two or more wells, that results in a much larger supply of water and we all benefit from that.

Do different wells have different water quality?

Yes.That is another reason we may want to intertie more than one community and retire a well that is nearing or exceeding the water quality contaminate limits.  Let’s look at some examples!  In 2066 EPA, reduced the maximum contaminant level of arsenic from 50 parts per billion (PPB) to 10 parts per billion.  At that time, we had 19 of our 40 community water systems that exceeded the new arsenic regulated contaminant levels. Some of this compliance was achieved by interties, where we added new wells and abandoned high arsenic wells. Some of the compliance was achieved by treatment.  

Where do we have treatment?

In 2006 TOUA put in an arsenic treatment plan in Covered Wells.  In 2011 the community of Siul Himatk was intertied to that treated water from Covered Wells,  In 2012 and early 2013, TOUA put in arsenic treatment plants in Nolic, Kohatk, Ak Chin, San Miguel, New Fields, Cockleburr, Greater Santa Rosa Regional, San Xavier ORD, Jack rabbit, and Ak Chin Nursing Home.  We also put in nitrate treatment in Cockleburr. The Menagers Dam distribution system was intertied to the Kerwo water wells to achieve compliance for arsenic. There are future plans to drill another well in Kerwo to add even more capacity to that system.  The distribution system in North Komelic was intertied to the Greater Santa Rosa Regional System as there are future plans to intertie the distribution systems of Ak Chin and Archie Hendricks Nursing Home Facility to the Greater Santa Rosa Regional System. Two thousand twelve (2012)  and 2013 were big years for the water department at the Tohono O’odham Utility Authority. There is always more to do.  Environmental regulations never get less, they always get more.  So that means we will be striving to do more also – for you…our customers, our neighbors, and our friends.  Should you ever have a concern about your drinking water PLEASE do not hesitate to contact us at 5250-383-5831.  Thank you for allowing us to serve YOU!