Tap WaterIndex

← Illinois

Tap water quality report

Auburn

EPA monitoring tested this supplier for 44 contaminants and detected 11. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

44
contaminants tested
11
detected
4,574
people served
27
health-based violations
Illinois rankingsLead in IllinoisPFAS in Illinois
Water source
SWP
Ownership
Local government
Counties served
Sangamon

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.

27
health-based violations
49
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2010-07-01 → 2010-07-31
TT Health-based Resolved 2010-07-01 → 2010-07-31
TT Health-based Resolved 2010-07-01 → 2010-07-31
TT Health-based Resolved 2010-07-01 → 2010-07-31
TT Health-based Resolved 2010-07-01 → 2010-07-31
MCL Health-based Resolved 2010-05-01 → 2010-05-31
MCL Health-based Resolved 2010-05-01 → 2010-05-31
MCL Health-based Resolved 2010-05-01 → 2010-05-31
MCL Health-based Resolved 2010-05-01 → 2010-05-31
MCL Health-based Resolved 1994-04-01 → 1994-06-30

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
Chloroform
105 µg/L
No EPA limit set
 63/63 SYR4 2012–2019
Dichloroacetic Acid
38.8 µg/L
No EPA limit set
 63/63 SYR4 2012–2019
TTHM
124.1 µg/L 155%
of the EPA limit, in the worst sample — 80 µg/L
 63/63 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
74.1 µg/L 123%
of the EPA limit, in the worst sample — 60 µg/L
 63/63 SYR4 2012–2019
Trichloroacetic Acid
32.9 µg/L
No EPA limit set
 63/63 SYR4 2012–2019
Bromodichloromethane
16.9 µg/L
No EPA limit set
 62/63 SYR4 2012–2019
Dibromochloromethane
4 µg/L
No EPA limit set
 62/63 SYR4 2012–2019
Lead
0.0027 mg/L 18%
of the EPA limit 0.0150 mg/L
 17/17 LCR 2025
Copper
384 µg/L 30%
of the EPA limit 1300 µg/L
 16/40 SYR4 2014–2017
Monochloroacetic Acid
4.6 µg/L
No EPA limit set
 8/63 SYR4 2012–2019
Dibromoacetic Acid
1.1 µg/L
No EPA limit set
 3/63 SYR4 2012–2019
33 contaminants tested, none detected
11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaBromoformHfpo-DaLeadMonobromoacetic AcidNetfosaaNfdhaNmefosaaPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaLithium

Utility contact

Contact
HENSON, JR., THOMAS
Phone
217-438-6605

Frequently asked questions about Auburn

Is Auburn tap water safe to drink?

EPA monitoring detected 11 contaminants in Auburn'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 Auburn's water?

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

How many people does Auburn serve?

Auburn reports serving 4,574 people in Illinois, per its EPA record.

Has Auburn had any water quality violations?

The EPA has 49 violations on file for Auburn, of which 27 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.