Quintero
100%

In the desert southwest, water resource management and planning are important to
ensure that current and future generations have an adequate water supply. Every drop
of Peoria’s drinking water is treated using modern, state-of-the-art treatment technology.
Hundreds of tests are performed each day to be certain that your drinking water meets
all federal, state and local water quality standards.

Peoria

Peoria’s conservative fiscal practices coupled with state-of-the-art technology
ensure excellent value per gallon.
Peoria has continuous access to its secure, diverse water sources.
Dedicated, certified operations and engineering personnel treat, test and
deliver safe water, conveniently on demand.
Water conservation is a necessary way of life in the desert southwest.
Remember, Peoria has enough water to use,
but never enough to waste.™

Source Water Assessment
The Arizona Department of Environmental Quality (ADEQ) performed a
source water assessment for 24 wells used by the City.The assessment reviewed the adjacent
land uses that may pose a potential risk to the sources. One of Peoria’s wells was found to have
one adjacent land use that posed a high risk of contamination. Please understand that this one
well’s high risk rating does not imply poor water quality, only its potential to becoming contaminated. The assessment report is available for review at ADEQ, 1110 W. Washington Street,
Phoenix, AZ 85007 between the hours of 8 am – 5 pm. Electronic copies are available from
ADEQ at dml@azdeq.gov.

Vistancia
100%

All Other 34% 35%
Areas Served
by the City
31%
Colorado River via
the Central Arizona Project
Recovered (well) water
Salt and Verde Rivers via
the Salt River Project

A Message from the Environmental Protection Agency
To ensure that tap water is safe to drink, the Environmental Protection Agency (EPA) prescribes regulations that limit the amount of certain contaminants in water
provided by public water systems.The Food and Drug Administration (FDA) regulations establish limits for contaminants in bottled water which must provide the
same protection for public health.
Drinking water, including bottled water, may reasonably be expected to contain at least small amounts of some contaminants. The presence of contaminants does
not necessarily indicate that water poses a health risk. More information about contaminants and potential health effects can be obtained by calling the EPA’s Safe
Drinking Water Hotline (1-800-426-4791).
The sources of drinking water (both tap and bottled water) include rivers, lakes, streams, ponds, reservoirs, springs and wells. As water travels over the surface of
the land or through the ground, it dissolves naturally occurring minerals and, in some cases, radioactive material and can pick up substances resulting from the
presence of animals or from human activity. Following are contaminants that may be present in source water:
• Microbial contaminants, such as viruses and bacteria that may be from sewage treatment plants, septic systems, agricultural livestock operations, or wildlife;
• Inorganic contaminants, such as salts and metals, that can be naturally occurring or result from urban storm water runoff, industrial or domestic wastewater
discharges, oil and gas production, mining, or farming;
• Pesticides and herbicides that may come from a variety of sources such as agriculture, urban storm water runoff and residential uses;
• Organic chemical contaminants, including synthetic and volatile organic chemicals that are by-products of industrial processes and petroleum production and can
also come from gas stations, urban storm water runoff and septic systems; and
• Radioactive contaminants that can be naturally-occurring or can be the result of oil and gas production and mining activities.

SPECIAL HEALTH INFORMATION
Some people may be more vulnerable to contaminants in drinking water than the general population. Immuno-compromised persons such as persons with cancer
undergoing chemotherapy, persons who have undergone organ transplants, people with HIV/AIDS or other immune system disorders, some elderly and infants
can be particularly at risk from infections.These people should seek advice from their health care providers. EPA/CDC (Centers for Disease Control) guidelines
on appropriate means to lessen the risk of infection by Cryptosporidium and other microbial contaminants along with more information about contaminants and
potential health effects are available from the Safe Drinking Water Hotline (1-800-426-4791).
Nitrate, Arsenic, Lead & Copper,Turbidity and Trihalomethanes
Nitrate at levels above 10 mg/L is a health risk for infants of less than six months of age. High nitrate levels in drinking water can cause blue baby syndrome. Nitrate
levels may rise quickly for short periods of time because of rainfall or agricultural activity. If you are caring for an infant, you should ask advice from your health
care provider.
While your drinking water meets EPA’s standard for Arsenic, it does contain low levels. EPA’s standard balances the current understanding of arsenic’s possible
health effects against the costs of removing arsenic from drinking water. EPA continues to research the health effects of low levels of arsenic, which is a mineral
known to cause cancer in humans at high concentrations and is linked to other health effects such as skin damage and circulatory problems. Some people who
drink water containing arsenic in excess of the MCL over many years could experience skin damage or problems with their circulatory system and may have an
increased risk of getting cancer.
If present, elevated levels of lead can cause serious health problems, especially for pregnant women and young children. Lead in drinking water is primarily from
materials and components associated with service lines and home plumbing. The City of Peoria is responsible for providing high quality drinking water, but cannot
control the variety of materials used in plumbing components. When your water has been sitting for several hours, you can minimize the potential for lead
exposure by flushing your tap for 30 seconds to 2 minutes before using water for drinking or cooking. If you are concerned about lead in your drinking water,
you may wish to have your water tested. Information on lead in drinking water, testing methods and steps you can take to minimize exposure is available from
EPA’s Safe Drinking Water Hotline, 1-800-426-4791, or at www.epa.gov/lead.
Turbidity is a measure of the cloudiness of water and is an indication of the effectiveness of our filtration system. Turbidity has no health effects. However, turbidity
can interfere with disinfection and provide a medium for microbial growth. Turbidity may indicate the presence of disease-causing organisms. These organisms
include bacteria, viruses and parasites that can cause symptoms such as nausea, cramps, diarrhea and associated headaches.
Some people who drink water containing trihalomethanes in excess of the MCL over many years may experience problems with their liver, kidneys, or central
nervous systems and may have an increased risk of getting cancer.
Este informe contiene información importante sobre su agua potable. Si usted tiene preguntas sobre este informe, por favor llame al 623-773-7561.
The information and data contained in this report apply only to those who receive their water from the City of Peoria. There are several private water companies that serve residents in certain
areas of the City. If you receive your water from the Sunrise, Rose Valley or EPCOR water companies, you should contact your water supplier directly for water data that affects you:

Sunrise: 623-972-6133

Rose Valley: 623-889-2275; info@rosevalleywaterco.com

EPCOR: 800-383-0834 (Agua Fria District)

Published June 2018

2017 WATER QUALITY REPORT
ANALYTE

UNITS

PEORIA WATER SYSTEM
04-07-096

QUINTERO WATER SYSTEM
04-07-513

VISTANCIA WATER SYSTEM
04-07-520

EPA LIMIT

EPA LIMIT

RANGE

AVERAGE

RANGE

AVERAGE

RANGE

AVERAGE

MCL

MCLG

Alkalinity

mg/L

114 - 186

135

~

~

~

~

N/A

N/A

Arsenic

µg/L

1.2 - 9.1

5.2

2.2 - 3.0

2.6

6.1 ***

6.1 ***

10

0

Barium

mg/L

0.01 - 0.12

0.06

0.118-0.120

0.119

~

~

2

2

Bromate*

µg/L

ND - 5.0

1.7

~

~

~

~

10

0

Chromium

µg/L

ND - 22

5.5

ND

ND

~

~

100

100

Fluoride

mg/L

0.14 - 0.68

0.28

0.33 - 0.35

0.34

0.24 ***

0.24

4

N/A

Gross Alpha

pCi/L

1.2 - 2.6

2.3

3.1***

3.1***

~

~

15

0

Hardness

Gr/gal

4 - 17

10

16 - 17

16

14 - 16

15

N/A

N/A

Nitrate

mg/L

0.63 - 8.6

3.6

0.27

0.27

1.21 ***

1.21

10

10

pH Units

6.63 - 7.96

7.1

~

~

~

~

N/A

N/A

Selenium

µg/L

ND - 4.0

2.65

ND - 4

2

~

~

50

50

Sodium

mg/L

32-70.5

46.9

99.1 - 100

99.6

~

~

N/A

N/A

Total Organic
Carbon % Removal

%

27.7 - 55.8%

39%

~

~

~

~

TT

N/A

Total Haloacetic
Acids*

µg/L

5.4 - 20.4

14.4

ND

ND

ND - 4

2

60*

N/A

Total
Trihalomethanes*

µg/L

18.7 - 63.4

50

ND - 0.4

0.2

8.2 - 34.3

21.3

80*

N/A

Uranium

µg/L

4.9

4.9

~

~

~

~

30

0

Xylenes

µg/L

ND - 0.6

0.04

ND

ND

~

~

10

10

Turbidity

NTU

0.278

N/A

0.19

N/A

~

~

TT=1 NTU

0

100.00%

N/A

100.00%

N/A

~

~

TT=%of
samples
<0.3 NTU

0

0.07%

N/A

0**

N/A

0**

N/A

0

pH

Total Coliforms

Present/
Absent

Fecal coliform or
E. coli bacteria

Present/
Absent

0.00%

N/A

0**

N/A

0**

N/A

5% of
monthly
samples
are
positive

Chlorine Residual

mg/L

0.05 - 2.17

0.94

0.25 - 1.55

0.6

0.62 - 1.8

1.12

4

4

UNITS

90TH
PERCENTILE
REPORTED

NUMBER
OF SITES
ABOVE AL

90TH
PERCENTILE
REPORTED

NUMBER
OF SITES
ABOVE AL

90TH
PERCENTILE
REPORTED

NUMBER
OF SITES
ABOVE AL

EPA
ACTION
LEVEL (AL)

EPA
LIMIT
MCLG

Copper

mg/L

0.34 (2016)

None

0.685 (2016)

None

0.243 (2015)

None

1.3

1.3

Lead

µg/L

<5 (2016)

None

12.1 (2016)

Two

5.4 (2015)

None

15

0

ANALYTE

POSSIBLE SOURCES

0

POSSIBLE SOURCES

The EPA’s Long Term 2 Enhanced Surface Water Treatment Rule (LT2ESWTR) required Peoria and other large water systems to conduct monthly monitoring for Cryptosporidium in their source water.
In 2015, Peoria began the twenty-four month LT2ESWTR source water monitoring for Cryptosporidium. The results of the monitoring have shown that no additional treatment is required to remove
the level of Cryptosporidium found. Results range from not detected to 0.667 organisms per liter.
Cryptosporidium is a microbial pathogen found in surface water throughout the U.S. Ingestion of Cryptosporidium may cause cryptosporidiosis, an abdominal infection. Symptoms of infection include
nausea, diarrhea, and abdominal cramps. Most healthy individuals can overcome the disease within a few weeks. However, immuno-compromised people, infants and small children, and the elderly are at
greater risk of developing life-threatening illness. Although filtration removes Cryptosporidium, the most commonly-used filtration methods cannot guarantee 100 percent removal. Our monitoring
indicates, although infrequent, these organisms are present in our source water. Current test methods do not allow us to determine if the organisms are dead or if they are capable of causing disease.

KEY TO TABLE
AL

MCL

MCLG

MRL

MRDL

MRDLG

Action Level - The concentration of a contaminant that, if
exceeded, triggers treatment or
other requirements that a water
system must follow.
Max. Contaminant Level The highest level of a contaminant
that is allowed in drinking water.
MCLs are set as close to the
MCLGs as feasible using the best
available treatment technology.
Max. Contaminant Level
Goal - The level of a contaminant
in drinking water below which
there is no known or expected
risk to health. MCLGs allow
for a margin of safety.
Min. Reporting Level The lowest accurately reportable
concentration.

N/A

Not Applicable.

ND

Not Detected.

Gr/Gal

Grains per Gallon.

NTU

Nephelometric Turbidity
Unit - Measure of how light is
scattered by particulate matter
in water.

pCi/L

pico-Curies per Liter Measure of radioactivity.

Naturally present in
the environment
Erosion of
natural deposits
Soil runoff

By-product of
drinking water
chlorination

Discharge
from steel
and pulp mills

By-product of
drinking water
ozonation

Discharge from
petroleum
factories

Water additive
used to control
microbes

Discharge
from chemical
factories
Discharge
from mines

mg/L

parts per million Unit of measurement equal
to milligrams per liter.

Human or animal
fecal waste

µg/L

parts per billion Unit of measurement equal
to micrograms per liter.

Runoff from
orchards

Water additive
used to promote
strong teeth

ng/L

parts per trillion Unit of measurement equal
to nanograms per liter.

Fertilizer runoff

N/A

Max. Residual Disinfectant
TT
Treatment Technique Level - The highest level of a
Required process intended to
disinfectant allowed in drinking
reduce the level of a contaminant
water. There is convincing evidence
in drinking water.
that addition of a disinfectant is
necessary for control of microbial * MCL is based on a running annual average.
contaminants.
The average given is the highest average.
Max. Residual Disinfectant
Level Goal - The level of a
drinking water disinfectant below
which there is no known or
expected risk to health. MRDLGs
do not reflect the benefits of the
use of disinfectants to control
microbial contaminants.

LEGEND

** If a system collecting fewer than 40 samples
per month has two or more positive samples
in one month, the system has a MCL violation.
*** Only one sample collected.
~ Not required

To learn more about water quality...
Peoria: www.peoriaaz.gov/envresources
or 623-773-7561
USEPA: http://water.epa.gov/drink
ADEQ: www.azdeq.gov
Maricopa County: www.maricopa.gov/envsvc
Tap Into Quality: www.tapintoquality.com
Cryptosporidium was tested for, but not found, at
Pyramid Peak and Greenway Water Treatment Plants.

Corrosion of
home plumbing
systems