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Tap water quality report

North Regional Water Fac

EPA monitoring tested this supplier for 50 contaminants and detected 14. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

50
contaminants tested
14
detected
770
people served
6
health-based violations
Illinois rankingsLead in IllinoisPFAS in Illinois
Water source
Ground water
Ownership
Private
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.

6
health-based violations
103
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 1995-06-01
TT Health-based Resolved 1994-11-21
MCL Health-based Archived 1992-04-01 → 1992-04-30
MCL Health-based Archived 1992-04-01 → 1992-04-30
MCL Health-based Archived 1992-02-01 → 1992-02-29
MCL Health-based Archived 1992-02-01 → 1992-02-29
MR Monitoring Archived 2020-01-01 → 2025-12-31
MR Monitoring Archived 2020-01-01 → 2025-12-31
MR Monitoring Resolved 1994-01-01 → 1994-06-30
MR Monitoring Resolved 1993-10-01

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
Copper
140 µg/L 11%
of the EPA limit 1300 µg/L
 21/30 SYR4 2012–2018
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 14/14 LCR 2024
Nitrate
70 µg/L 0.7%
of the EPA limit 10000 µg/L
 8/16 SYR4 2012–2019
Lead
7.5 µg/L 50%
of the EPA limit 15 µg/L
 4/30 SYR4 2012–2018
Barium
3.4 µg/L 0.2%
of the EPA limit 2000 µg/L
 2/2 SYR4 2014–2017
Chloroform
0.6580 µg/L
No EPA limit set
 2/7 SYR4 2014–2019
Fluoride
1050 µg/L 26%
of the EPA limit 4000 µg/L
 2/2 SYR4 2014–2017
TTHM
1.716 µg/L 2.1%
of the EPA limit 80 µg/L
 2/7 SYR4 2014–2019
Xylenes, Total
2.04 µg/L 0%
of the EPA limit 10000 µg/L
 2/10 SYR4 2014–2019
Arsenic
1 µg/L 10%
of the EPA limit 10 µg/L
 1/2 SYR4 2014–2017
Bromodichloromethane
0.5530 µg/L
No EPA limit set
 1/7 SYR4 2014–2019
Combined Radium (-226 And -228)
0.2400 pCi/L 4.8%
of the EPA limit 5 pCi/L
 1/1 SYR4 2014
Dibromochloromethane
0.5050 µg/L
No EPA limit set
 1/7 SYR4 2014–2019
Nitrate-Nitrite
70 µg/L 0.7%
of the EPA limit 10000 µg/L
 1/4 SYR4 2012–2018
36 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-DichloropropaneAntimony, TotalBenzeneBeryllium, TotalBromoformChlorobenzeneCyanideCadmiumCarbon TetrachlorideChromiumDichloromethaneDibromoacetic AcidDichloroacetic AcidEthylbenzeneMercuryMonobromoacetic AcidMonochloroacetic AcidNitriteSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneTotal Haloacetic Acids (HAA5)Trichloroacetic AcidTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

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

Frequently asked questions about North Regional Water Fac

Is North Regional Water Fac tap water safe to drink?

EPA monitoring detected 14 contaminants in North Regional Water Fac'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 North Regional Water Fac's water?

EPA monitoring detected Copper, Lead, Nitrate, Lead, Barium, and others. The full list with the level and data source for each is above.

How many people does North Regional Water Fac serve?

North Regional Water Fac reports serving 770 people in Illinois, per its EPA record.

Has North Regional Water Fac had any water quality violations?

The EPA has 103 violations on file for North Regional Water Fac, of which 6 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.