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Tap water quality report

Fairfield

EPA monitoring tested this supplier for 109 contaminants and detected 25. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

109
contaminants tested
25
detected
6,202
people served
4
health-based violations
Illinois rankingsLead in IllinoisPFAS in Illinois
Water source
Surface water
Ownership
Local government
Counties served
Wayne

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

4
health-based violations
139
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Archived 2025-10-01 → 2025-12-31
TT Health-based Archived 2025-10-01 → 2025-12-31
TT Health-based Archived 2025-10-01 → 2025-12-31
TT Health-based Archived 2025-10-01 → 2025-12-31
MR Monitoring Resolved 2025-07-01 → 2025-09-30
MR Monitoring Resolved 2025-07-01 → 2025-09-30
MR Monitoring Resolved 2025-07-01 → 2025-09-30
MR Monitoring Resolved 2025-07-01 → 2025-09-30
MR Monitoring Resolved 2025-07-01 → 2025-09-30
MR Monitoring Resolved 2025-07-01 → 2025-09-30

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Bromodichloromethane
25.6 µg/L
No EPA limit set
 57/57 SYR4 2012–2019
Chloroform
58.6 µg/L
No EPA limit set
 57/57 SYR4 2012–2019
Dibromochloromethane
10.5 µg/L
No EPA limit set
 57/57 SYR4 2012–2019
TTHM
91.5 µg/L 114%
of the EPA limit, in the worst sample — 80 µg/L
 57/57 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
59 µg/L 98%
of the EPA limit 60 µg/L
 56/57 SYR4 2012–2019
Dichloroacetic Acid
32.9 µg/L
No EPA limit set
 55/57 SYR4 2012–2019
Trichloroacetic Acid
18 µg/L
No EPA limit set
 54/57 SYR4 2012–2019
Dibromoacetic Acid
7.84 µg/L
No EPA limit set
 42/57 SYR4 2012–2019
Copper
350 µg/L 27%
of the EPA limit 1300 µg/L
 21/40 SYR4 2014–2017
Chlorite
540 µg/L 54%
of the EPA limit 1000 µg/L
 21/27 SYR4 2012–2014
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 18/18 LCR 2025
Bromoform
2.19 µg/L
No EPA limit set
 17/57 SYR4 2012–2019
Monochloroacetic Acid
5.34 µg/L
No EPA limit set
 16/57 SYR4 2012–2019
Nitrate
620 µg/L 6.2%
of the EPA limit 10000 µg/L
 14/16 SYR4 2012–2019
Fluoride
1180 µg/L 30%
of the EPA limit 4000 µg/L
 8/8 SYR4 2012–2019
Barium
46.8 µg/L 2.3%
of the EPA limit 2000 µg/L
 7/8 SYR4 2012–2019
Simazine
1.5 µg/L 38%
of the EPA limit 4 µg/L
 7/30 SYR4 2012–2019
Arsenic
7.8 µg/L 78%
of the EPA limit 10 µg/L
 6/8 SYR4 2012–2019
Lead
1.9 µg/L 13%
of the EPA limit 15 µg/L
 6/40 SYR4 2014–2017
Nitrate-Nitrite
620 µg/L 6.2%
of the EPA limit 10000 µg/L
 5/6 SYR4 2012–2018
Atrazine
2.1 µg/L 70%
of the EPA limit 3 µg/L
 4/29 SYR4 2012–2019
Monobromoacetic Acid
1.98 µg/L
No EPA limit set
 4/57 SYR4 2012–2019
Bhc-Gamma
0.0250 µg/L 13%
of the EPA limit 0.2000 µg/L
 1/26 SYR4 2012–2019
Combined Radium (-226 And -228)
0.8300 pCi/L 17%
of the EPA limit 5 pCi/L
 1/1 SYR4 2014
Heptachlor Epoxide
0.0660 µg/L 33%
of the EPA limit 0.2000 µg/L
 1/26 SYR4 2012–2019
84 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
YOUNG, CHRISTIAN COLE
Phone
618-516-2039
Email
waterdept@fairfieldilcitygov.us

Frequently asked questions about Fairfield

Is Fairfield tap water safe to drink?

EPA monitoring detected 25 contaminants in Fairfield's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Fairfield's water?

EPA monitoring detected Bromodichloromethane, Chloroform, Dibromochloromethane, TTHM, Total Haloacetic Acids (HAA5), and others. The full list with the level and data source for each is above.

How many people does Fairfield serve?

Fairfield reports serving 6,202 people in Illinois, per its EPA record.

Has Fairfield had any water quality violations?

The EPA has 139 violations on file for Fairfield, of which 4 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.