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Tap water quality report

Lake Barrington

EPA monitoring tested this supplier for 78 contaminants and detected 18. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

78
contaminants tested
18
detected
500
people served
0
health-based violations
Illinois rankingsLead in IllinoisPFAS in Illinois
Water source
Ground water
Ownership
Local government
Counties served
Lake

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.

0
health-based violations
6
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2007-07-01 → 2007-07-31
MR Monitoring Resolved 2007-07-01 → 2007-07-31
MR Monitoring Resolved 2007-07-01 → 2007-09-30
MR Monitoring Resolved 2007-07-01 → 2007-09-30
MR Monitoring Resolved 2007-01-01 → 2007-03-31
MR Monitoring Resolved 2007-01-01 → 2007-03-31

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 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Copper
545 µg/L 42%
of the EPA limit 1300 µg/L
worst single sample: 1100 µg/L
51/51 SYR4 2013–2019
Lead
42.75 µg/L 285%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 48 µg/L
26/51 SYR4 2013–2019
Lead
0.0150 mg/L 100%
of the EPA limit 0.0150 mg/L
 19/19 LCR 2025
Bromodichloromethane
9.352 µg/L
No EPA limit set
worst single sample: 9.52 µg/L
8/8 SYR4 2013–2019
Bromoform
4.9485 µg/L
No EPA limit set
worst single sample: 5.12 µg/L
8/8 SYR4 2013–2019
Chloroform
6.7985 µg/L
No EPA limit set
worst single sample: 8.09 µg/L
8/8 SYR4 2013–2019
Dibromoacetic Acid
4.5245 µg/L
No EPA limit set
worst single sample: 4.99 µg/L
8/8 SYR4 2013–2019
Dibromochloromethane
10.425 µg/L
No EPA limit set
worst single sample: 10.6 µg/L
8/8 SYR4 2013–2019
Dichloroacetic Acid
4.6445 µg/L
No EPA limit set
worst single sample: 4.76 µg/L
8/8 SYR4 2013–2019
Nitrate
400 µg/L 4%
of the EPA limit 10000 µg/L
 8/16 SYR4 2012–2019
TTHM
27.981 µg/L 35%
of the EPA limit 80 µg/L
worst single sample: 28.24 µg/L
8/8 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
10.7635 µg/L 18%
of the EPA limit 60 µg/L
worst single sample: 10.97 µg/L
8/8 SYR4 2013–2019
Barium
168.85 µg/L 8.4%
of the EPA limit 2000 µg/L
worst single sample: 171 µg/L
2/2 SYR4 2014–2017
Combined Radium (-226 And -228)
2.135 pCi/L 43%
of the EPA limit 5 pCi/L
worst single sample: 2.2 pCi/L
2/2 SYR4 2012–2018
Fluoride
905.404 µg/L 23%
of the EPA limit 4000 µg/L
worst single sample: 953 µg/L
2/2 SYR4 2014–2017
Trichloroacetic Acid
2.2365 µg/L
No EPA limit set
worst single sample: 2.29 µg/L
2/8 SYR4 2013–2019
Monobromoacetic Acid
1.04 µg/L
No EPA limit set
 1/8 SYR4 2013–2019
Monochloroacetic Acid
1.34 µg/L
No EPA limit set
 1/8 SYR4 2013–2019
60 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
PETERSON, SHARON
Phone
847-842-6080
Email
[email protected]

Frequently asked questions about Lake Barrington

Is Lake Barrington tap water safe to drink?

EPA monitoring detected 18 contaminants in Lake Barrington'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 Lake Barrington's water?

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

How many people does Lake Barrington serve?

Lake Barrington reports serving 500 people in Illinois, per its EPA record.

Has Lake Barrington had any water quality violations?

The EPA has 6 violations on file for Lake Barrington, of which 0 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.