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Contaminant guide

Chlorobenzene in drinking water

The EPA limit for Chlorobenzene in drinking water is 100 µg/L. Of the 34,515 water suppliers tested, 117 had it detected.

100 µg/L
EPA limit (MCL)
0.3%
of suppliers detected it
(117/34,515)

What the EPA limit means

⚖️

100 µg/L

Maximum Contaminant Level — the enforceable ceiling a supplier must stay under.

🎯

100 µg/L

Health goal (MCLG) — the level with no known health effect. It is a goal, not a legal limit, and is often zero for carcinogens.

🧪

SYR4

Where these measurements come from. Hover the tag for the EPA programme and years.

Where Chlorobenzene was found

The water suppliers reporting the highest levels, worst first. For lead and copper that is the 90th-percentile result the action level is written against; for Six-Year Review data, the 95th percentile of each system's samples.

SupplierCityStateLevel vs EPA limit
Freeman Creek Bayfield CO
25.6 µg/L 26%
of the EPA limit 100 µg/L
Irvine Municipal Utilities Irvine KY
9.8 µg/L 9.8%
of the EPA limit 100 µg/L
Riviera Beach Utility District, City of Riviera Beach FL
6.8655 µg/L 6.9%
of the EPA limit 100 µg/L
North Attleboro Water Dept North Attleborough MA
6.54 µg/L 6.5%
of the EPA limit 100 µg/L
Elfrida Wid Elfrida AZ
4.717 µg/L 4.7%
of the EPA limit 100 µg/L
Georgetown Municipal Water Service Georgetown KY
4.6 µg/L 4.6%
of the EPA limit 100 µg/L
Atwood Atwood IL
4.2 µg/L 4.2%
of the EPA limit 100 µg/L
Torreon-Ojo Encino East - Ntua Torreon/Ojo Encino, New Mexico AZ
3 µg/L 3%
of the EPA limit 100 µg/L
Artesian Water Company — —
2.8 µg/L 2.8%
of the EPA limit 100 µg/L
Madison Water Dept Madison boro-1417 NJ
2.61 µg/L 2.6%
of the EPA limit 100 µg/L
West Kern Water District Taft CA
2.525 µg/L 2.5%
of the EPA limit 100 µg/L
Fairmont, Town of Fairmont NC
2.44 µg/L 2.4%
of the EPA limit 100 µg/L
Garden City Park Wd New Hyde Park NY
2.4 µg/L 2.4%
of the EPA limit 100 µg/L
Ferron - Castle Valley Ssd Castledale UT
2.3075 µg/L 2.3%
of the EPA limit 100 µg/L
Burnside Water Company Burnside KY
2 µg/L 2%
of the EPA limit 100 µg/L
Worcester Dpwp, Water Supply Division Worcester MA
1.9 µg/L 1.9%
of the EPA limit 100 µg/L
Burkesville Water Works Burkesville KY
1.77 µg/L 1.8%
of the EPA limit 100 µg/L
City of Holly Hill Holly Hill FL
1.7 µg/L 1.7%
of the EPA limit 100 µg/L
Gaston Heights S/D Littleton NC
1.7 µg/L 1.7%
of the EPA limit 100 µg/L
Harpeth Valley U.D. Nashville TN
1.622 µg/L 1.6%
of the EPA limit 100 µg/L
Piedmont Municipal Wtr Wks Piedmont WV
1.5 µg/L 1.5%
of the EPA limit 100 µg/L
Wa of Western Nassau North Hempstead NY
1.4975 µg/L 1.5%
of the EPA limit 100 µg/L
Manchester By the Sea Dpw Manchester MA
1.4 µg/L 1.4%
of the EPA limit 100 µg/L
Riverside Campground Sevierville TN
1.37 µg/L 1.4%
of the EPA limit 100 µg/L
Mt Vernon Water Works Brodhead KY
1.37 µg/L 1.4%
of the EPA limit 100 µg/L

Frequently asked questions about Chlorobenzene

What is Chlorobenzene in drinking water?

Chlorobenzene is monitored in US public drinking water under EPA rules. Each supplier's result is reported to the EPA and published here with its source and period.

What is the EPA limit for Chlorobenzene?

The EPA's Maximum Contaminant Level for Chlorobenzene is 100 µg/L, and its health goal (MCLG) is 100 µg/L. A result above the limit means the supplier must act; the goal is the level at which no health effects are expected.

How common is Chlorobenzene in US tap water?

Of the 34,515 water suppliers with results on file, 117 detected Chlorobenzene — 0.3% of those tested.