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Tap water quality report

Southeast Regional Water Facility

EPA monitoring tested this supplier for 44 contaminants and detected 14. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

44
contaminants tested
14
detected
6,940
people served
2
health-based violations
Illinois rankingsLead in IllinoisPFAS in Illinois
Water source
SWP
Ownership
Local government
Counties served
DuPage

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.

2
health-based violations
5
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 1991-12-01 → 1991-12-31
MCL Health-based Archived 1991-12-01 → 1991-12-31
MR Monitoring Resolved 2023-01-01 → 2025-12-31
MR Monitoring Resolved 2023-01-01 → 2025-12-31
MR Monitoring Resolved 2023-01-01 → 2025-12-31

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
16.4 µg/L
No EPA limit set
 35/35 SYR4 2012–2019
Chloroform
40.1 µg/L
No EPA limit set
 35/35 SYR4 2012–2019
Dibromochloromethane
7.09 µg/L
No EPA limit set
 35/35 SYR4 2012–2019
TTHM
63 µg/L 79%
of the EPA limit 80 µg/L
 35/35 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
24 µg/L 40%
of the EPA limit 60 µg/L
 34/35 SYR4 2012–2019
Trichloroacetic Acid
12.7 µg/L
No EPA limit set
 34/35 SYR4 2012–2019
Dichloroacetic Acid
10.3 µg/L
No EPA limit set
 27/35 SYR4 2012–2019
Copper
226 µg/L 17%
of the EPA limit 1300 µg/L
 26/80 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 17/17 LCR 2025
Monobromoacetic Acid
1.59 µg/L
No EPA limit set
 13/35 SYR4 2012–2019
Dibromoacetic Acid
1.7 µg/L
No EPA limit set
 11/35 SYR4 2012–2019
Bromoform
0.5400 µg/L
No EPA limit set
 2/35 SYR4 2012–2019
Lead
2.3 µg/L 15%
of the EPA limit 15 µg/L
 2/80 SYR4 2012–2019
Monochloroacetic Acid
3.3 µg/L
No EPA limit set
 1/35 SYR4 2012–2019
30 contaminants tested, none detected
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Utility contact

Contact
ADAMS, JONATHAN
Phone
630-964-7503
Email
jonathan.adams@dupagecounty.gov

Frequently asked questions about Southeast Regional Water Facility

Is Southeast Regional Water Facility tap water safe to drink?

EPA monitoring detected 14 contaminants in Southeast Regional Water Facility'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 Southeast Regional Water Facility'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 Southeast Regional Water Facility serve?

Southeast Regional Water Facility reports serving 6,940 people in Illinois, per its EPA record.

Has Southeast Regional Water Facility had any water quality violations?

The EPA has 5 violations on file for Southeast Regional Water Facility, of which 2 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.