Annual D r i n k i n g Water Q u a l i t y R e p o r t

ALEXIS

IL1874000

Annual Water Q u a l i t y Report f o r the p e r i o d of January 1 t o December 31, 2016 This r e p o r t i s intended t o pr o v i d e you w i t h important i n f o r m a t i o n about your d r i n k i n g water and the e f f o r t s made by the water system t o pr o v i d e safe d r i n k i n g water.

The source of d r i n k i n g water used by ALEXIS i s Ground Water

For more i n f o r m a t i o n r e g a r d i n g t h i s r e p o r t c o n t a c t :

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The sources of d r i n k i n g water (both tap water and b o t t l e d water) i n c l u d e r i v e r s , lakes, streams, ponds, r e s e r v o i r s , s p r i n g s , and w e l l s . As water t r a v e l s over the surface of the land or through the ground, i t d i s s o l v e s n a t u r a l l y - o c c u r r i n g minerals and, i n some cases, r a d i o a c t i v e m a t e r i a l , and can pic k up substances r e s u l t i n g from the presence of animals or from human a c t i v i t y .

Source of D r i n k i n g Water

Contaminants t h a t may be present i n source water i n c l u d e :

M i c r o b i a l contaminants, such as v i r u s e s and ba c t e r i a , which may come from sewage treatment p l a n t s , s e p t i c systems, a g r i c u l t u r a l l i v e s t o c k o p erations, and w i l d l i f e .

I n o r g a n i c contaminants, such as s a l t s and metals, which can be n a t u r a l l y - o c c u r r i n g or r e s u l t from urban storm water r u n o f f , i n d u s t r i a l or domestic wastewater discharges, o i l and gas production, mining, or farming.

P e s t i c i d e s and h e r b i c i d e s , which may come from i v a r i e t y o f sources such as a g r i c u l t u r e , urban storm water r u n o f f , and r e s i d e n t i a l uses.

Organic chemical contaminants, i n c l u d i n g s y n t h e t i c and v o l a t i l e o rganic chemicals, which are by-products of i n d u s t r i a l processes and petroleum p r o d u c t i o n , and can als o come from gas s t a t i o n s , urban storm water r u n o f f , and s e p t i c systems.

Radioactive contaminants, which can be n a t u r a l l y - o c c u r r i n g or be the r e s u l t of o i l and gas production and mining a c t i v i t i e s .

D r i n k i n g water, i n c l u d i n g b o t t l e d water, may reasonably be expected t o c o n t a i n a t l e a s t small amounts of some contaminants. The presence of contaminants does not n e c e s s a r i l y i n d i c a t e t h a t water poses a h e a l t h r i s k . More i n f o r m a t i o n about contaminants and p o t e n t i a l h e a l t h e f f e c t s can be obtained by c a l l i n g the EPAs Safe D r i n k i n g Water H o t l i n e a t (800) 426-4791.

I n order t o ensure t h a t tap water i s safe t o d r i n k , EPA p r e s c r i b e s r e g u l a t i o n s which l i m i t the amount of c e r t a i n contaminants i n water provided oy p u b l i c water systems. FDA r e g u l a t i o n s e s t a b l i s h l i m i t s f o r contaminants i n b o t t l e d water which nust p r o v i d e the same p r o t e c t i o n f o r p u b l i c h e a l t h .

Some people may be more v u l n e r a b l e t o contaminants i n d r i n k i n g water than the general p o p u l a t i o n . Immuno-compromised persons such as persons w i t h cancer undergoing chemotherapy, persons who have undergone organ t r a n s p l a n t s , people w i t h HIV/AIDS or o t h e r immune system d i s o r d e r s , some e l d e r l y and i n f a n t s can be p a r t i c u l a r l y at r i s k from i n f e c t i o n s . These people should seek advice about d r i n k i n g water from t h e i r h e a l t h care p r o v i d e r s . EPA/CDC g u i d e l i n e s on a p p r o p r i a t e means t o lessen the r i s k of i n f e c t i o n by Cryptosporidium and o t h e r m i c r o b i a l contaminants are a v a i l a b l e from the Safe D r i n k i n g Water H o t l i n e (800-426-4791).

I f present, e l e v a t e d l e v e l s of lead can cause serious h e a l t h problems, e s p e c i a l l y f o r pregnant women and young c h i l d r e n . Lead i n d r i n k i n g water i s p r i m a r i l y from m a t e r i a l s and components associated w i t h s e r v i c e l i n e s and home plumbing. We cannot c o n t r o l the v a r i e t y of m a t e r i a l s used i n plumbing components. When your water has been s i t t i n g f o r s e v e r a l hours, you can minimize the p o t e n t i a l f o r lead exposure by f l u s h i n g your tap f o r 3 0 seconds t o 2 minutes before u s i n g water f o r d r i n k i n g or cooking. I f you are concerned about lead i n your water, you may wish t o have your water t e s t e d . I n f o r m a t i o n on lead i n d r i n k i n g water, t e s t i n g methods, and steps you can take t o minimize exposure i s a v a i l a b l e from the Safe D r i n k i n g Water H o t l i n e o r a t http://www.epa.gov/safewater/lead.

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Source Water Information

Source Water Name Type of Water Report Status L o c a t i o n

WELL 2 (52025) GW 1 ELK S 1 ELK E (700FT SE) EL TNK

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Source Water Assessment

We want our valued customers t o be informed about t h e i r water q u a l i t y . I f you would l i k e t o l e a r n more, please f e e l welcome t o a t t e n d any of our r e g u l a r l y scheduled meetings. The source water assessment f o r our supply has been completed by the I l l i n o i s EPA. I f you would l i k e a copy of t h i s i n f o r m a t i o n , please stop by C i t y H a l l or c a l l our water o p e rator a t ''?aC^\-''\'t»7y- "^^'^'^ • To view a summary v e r s i o n of the completed Source Water Assessments, i n c l u d i n g : Importance of Source Water; S u s c e p t i b i l i t y t o Contamination Determination; and documentation/recommendation of Source Water P r o t e c t i o n E f f o r t s , you may access the I l l i n o i s EPA website a t http://www.epa.state.il.us/cgi-bin/wp/swap-fact-sheets.pi.

Source of Water: ALEXISTo determine A l e x i s ' s s u s c e p t i b i l i t y t o groundwater contamination, a Well S i t e Survey, pu b l i s h e d i n 1990 by the I l l i n o i s EPA, and a Source Water Assessment Program, were reviewed. Based on the i n f o r m a t i o n contained i n these documents, seventeen p o t e n t i a l sources of groundwater contamination are present t h a t c ould pose a hazard t o groundwater pumped by the A l e x i s community water supply w e l l s . These i n c l u d e Harrison's Service, A l e x i s Motor Company, A l e x i s F i r e Equipment p a i n t i n g and below ground f u e l storage. V i l l a g e of A l e x i s V i l l a g e H a l l , unknown antique storage, Simpson's Repair Service, A l e x i s Lumber Company, A l e x i s E l e v a t o r , stockyard feed s t o r e , below ground f u e l storage a t stockyard feed s t o r e , two unknown g r a i n storages. Remington T i r e s , Texaco, M&M A g r i c u l t u r a l Service, and a car wash. Based on i n f o r m a t i o n provided by A l e x i s ' s water supply o f f i c i a l s , the f o l l o w i n g f a c i l i t i e s , a l s o i n d i c a t e d as p o t e n t i a l sources i n the s i t e data t a b l e , are no longer i n e x i s t e n c e : A l e x i s F i r e Equipment, M&M A g r i c u l t u r a l Service, Simpson's Repair Service, Harrison's Service, A l e x i s Motor Company, Stockyard Feed Store, an unknown antique storage, an unknown g r a i n storage, and the C i t y of A l e x i s C i t y Hall.Based upon t h i s i n f o r m a t i o n , the I l l i n o i s EPA has determined t h a t A l e x i s Wells #1 and #2 are not s u s c e p t i b l e t o IOC, VOC, or SOC contamination. This d e t e r m i n a t i o n i s based on a number of c r i t e r i a i n c l u d i n g : m o n i t o r i n g conducted a t the w e l l s ; m o n i t o r i n g conducted a t the e n t r y p o i n t t o the d i s t r i b u t i o n system; and the a v a i l a b l e hydrogeologic data f o r the w e l l s . I n a n t i c i p a t i o n of the U.S. EPA's proposed Ground Water Rule, the I l l i n o i s EPA has determined t h a t A l e x i s ' s community water supply w e l l s are not v u l n e r a b l e t o v i r a l contamination. This d e t e r m i n a t i o n i s based upon the e v a l u a t i o n o f the f o l l o w i n g c r i t e r i a d u r i n g the V u l n e r a b i l i t y Waiver Process: the community's w e l l s are p r o p e r l y c o n s t r u c t e d w i t h sound i n t e g r i t y and proper s i t e c o n d i t i o n s ; t h e r e i s a hydrogeologic b a r r i e r t h a t r e s t r i c t s pathogen movement; a l l p o t e n t i a l routes and s a n i t a r y d e f e c t s have been m i t i g a t e d such t h a t the source water i s adequately p r o t e c t e d ; m o n i t o r i n g data d i d not i n d i c a t e a h i s t o r y of disease outbreak; and the s a n i t a r y survey o f the water supply d i d not i n d i c a t e a v i r a l c ontamination t h r e a t . However, having s t a t e d t h i s , the U.S. EPA i s proposing t o r e q u i r e States t o i d e n t i f y systems i n k a r s t , g r a v e l and f r a c t u r e d rock a q u i f e r systems as s e n s i t i v e . Water systems u t i l i z i n g these a q u i f e r types would be r e q u i r e d t o perform r o u t i n e source water m o n i t o r i n g . Because the community's w e l l s are c o n s t r u c t e d i n a co n f i n e d a q u i f e r , which should provide an adequate degree of p r o t e c t i o n t o prevent the movement of pathogens i n t o the w e l l s , w e l l h y d r a u l i c s were not considered t o be a s i g n i f i c a n t f a c t o r i n the v u l n e r a b i l i t y d e t e r m i n a t i o n .

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2016 Regulated Contaminants Detected

Lead and Copper D e f i n i t i o n s : A c t i o n Level Goal (ALG): The l e v e l of a contaminant i n d r i n k i n g water below which t h e r e i s no known or expected r i s k t o h e a l t h . ALGs a l l o w f o r a margin of sa f e t y .

Lead and Copper Date Sampled MCLG A c t i o n Level (AL)

90th P e r c e n t i l e

# S i t e s Over AL

Un i t s V i o l a t i o n L i k e l y Source of Contamination

Copper 2016 1.3 1.3 0.649 0 ppm N Erosion of n a t u r a l d e p o s i t s ; Leaching from wood p r e s e r v a t i v e s ; Corrosion of household plumbing systems.

Lead 2016 0 15 0 1 ppb N Corrosion of household plumbing systems; Erosion of n a t u r a l d e p o s i t s .

Water Q u a l i t y T e s t R e s u l t s

D e f i n i t i o n s ;

Avg:

Level 1 Assessment:

Level 2 Assessment:

Maximum Contaminant Level or MCL:

Maximum Contaminant Level Goal or MCLG:

Maximum r e s i d u a l d i s i n f e c t a n t l e v e l or MRDL: Maximum r e s i d u a l d i s i n f e c t a n t l e v e l g o a l or MRDLG:

na:

mrem:

ppb:

ppm:

Treatment Technique or TT:

The f o l l o w i n g t a b l e s c o n t a i n s c i e n t i f i c terms and measures, some of which may r e q u i r e e x p l a n a t i o n .

Regulatory compliance w i t h some MCLs are based on running annual average o f monthly samples.

A Level 1 assessment i s a study of the water system t o i d e n t i f y p o t e n t i a l problems and determine ( i f p o s s i b l e ) why t o t a l c o l i f o r m b a c t e r i a have been found i n our water system. A Level 2 assessment i s a very d e t a i l e d study o f the water system t o i d e n t i f y p o t e n t i a l problems and determine ( i f

p o s s i b l e ) why an E. c o l i MCL v i o l a t i o n has occurred and/or why t o t a l c o l i f o r m b a c t e r i a have been found i n our water system on m u l t i p l e occasions. The h i g h e s t l e v e l o f a contaminant t h a t i s allowed i n d r i n k i n g water. MCLs are set as close t o the MCLGs as f e a s i b l e u s i n g the best a v a i l a b l e treatment technology. The l e v e l of a contaminant i n d r i n k i n g water below which t h e r e i s no known or expected r i s k t o h e a l t h . MCLGs a l l o w f o r a margin of s a f e t y . The h i g h e s t l e v e l of a d i s i n f e c t a n t allowed i n d r i n k i n g water. There i s convincing evidence t h a t a d d i t i o n of a d i s i n f e c t a n t i s necessary f o r c o n t r o l of m i c r o b i a l contaminants. The l e v e l of a d r i n k i n g water d i s i n f e c t a n t below which t h e r e i s no known or expected r i s k t o h e a l t h . MRDLGs do not r e f l e c t the b e n e f i t s of the use of d i s i n f e c t a n t s t o c o n t r o l m i c r o b i a l contaminants.

not a p p l i c a b l e .

m i l l i r e m s per year (a measure of r a d i a t i o n absorbed by the body)

micrograms per l i t e r or p a r t s per b i l l i o n - or one ounce i n 7,350,000 g a l l o n s of water,

m i l l i g r a m s per l i t e r or p a r t s per m i l l i o n - or one ounce i n 7,350 g a l l o n s of water.

A r e q u i r e d process intended t o reduce the l e v e l of a contaminant i n d r i n k i n g water.

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Regulated Contaminants D i s i n f e c t a n t s and D i s i n f e c t i o n By­products

C o l l e c t i o n Date

Highest Level Detected

Range of Levels Detected

MCLG MCL Un i t s V i o l a t i o n L i k e l y Source of Contamination

C h l o r i n e 12/31/2016 1.2 0.5 - 2 MRDLG = 4 MRDL = 4 ppm N Water a d d i t i v e used t o c o n t r o l microbes.

Haloacetic Acids (HAAS)

2016 2 1.8 - 1.8 No goal f o r the t o t a l

60 ppb N By-product o f d r i n k i n g water d i s i n f e c t i o n .

T o t a l Trihalomethanes (TTHM)

2016 4 4.3 - 4.3 No goal f o r the t o t a l

80 ppb N By-product o f d r i n k i n g water d i s i n f e c t i o n .

I n o r g a n i c Contaminants

C o l l e c t i o n Date

Highest Level Detected

Range of Levels Detected

MCLG MCL Un i t s V i o l a t i o n L i k e l y Source of Contamination

Barium 11/18/2015 0.0185 0.0185 - 0.0185 2 2 ppm N Discharge of d r i l l i n g wastes; Discharge from metal r e f i n e r i e s ; Erosion of n a t u r a l d e p o s i t s .

F l u o r i d e 11/18/2015 1.8 1.8 - 1.8 4 4.0 ppm N Erosion of n a t u r a l d e p o s i t s ; Water a d d i t i v e which promotes s t r o n g t e e t h ; Discharge from f e r t i l i z e r and aluminum f a c t o r i e s .

I r o n 11/18/2015 0.0668 0.0668 - 0.0668 1.0 ppm N This contaminant i s not c u r r e n t l y r e g u l a t e d by the USEPA. However, the s t a t e r e g u l a t e s . Erosion of n a t u r a l d e p o s i t s .

N i t r a t e [measured as Nitrogen]

2016 0 .103 0.103 - 0.103 10 10 ppm N Runoff from f e r t i l i z e r use; Leaching from s e p t i c tanks, sewage; Erosion of n a t u r a l d e p o s i t s .

Sodium 11/18/2015 290 290 - 290 ppm N Erosion from n a t u r a l l y o c c u r i n g d e p o s i t s : Used i n water s o f t e n e r r e g e n e r a t i o n .

Radioactive Contaminants

C o l l e c t i o n • Date

Highest Level Detected

Range of Levels Detected

MCLG MCL Un i t s V i o l a t i o n L i k e l y Source of Contamination

Combined Radium 226/228

01/14/2015 8.7 8.7 - 8.7 0 5 pCi/L N Erosion o f n a t u r a l d e p o s i t s .

Gross alpha e x c l u d i n g radon and uranium

01/14/2015 12.9 12.9 - 12.9 0 15 pCi/L N Erosion of n a t u r a l d e p o s i t s .

Uranium 01/09/2012 0.02682 0.02682 -0.02682

0 30 ug/1 N Erosion of n a t u r a l d e p o s i t s .

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