Tap WaterIndex

← All contaminants

Contaminant guide

Pentachlorophenol in drinking water

The EPA limit for Pentachlorophenol in drinking water is 1 µg/L. Of the 28,082 water suppliers tested, 186 had it detected.

1 µg/L
EPA limit (MCL)
0.7%
of suppliers detected it
(186/28,082)

What Pentachlorophenol is, and why it's regulated

Pentachlorophenol was a wood preservative; it damages the liver and kidneys and is a probable carcinogen.

What the EPA limit means

⚖️

1 µg/L

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

🎯

0.0 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 Pentachlorophenol was found

The water suppliers reporting the highest levels, worst first.

SupplierCityStateLevel vs EPA limit
Sunnyview Mobile Home Park Salem OR
4.51 µg/L 451%
of the EPA limit, in the worst sample — 1 µg/L
Avalon Gardens Water System Tubac AZ
1 µg/L 100%
of the EPA limit 1 µg/L
Epcor - Tubac Tubac AZ
1 µg/L 100%
of the EPA limit 1 µg/L
Hebron Hebron IL
0.9200 µg/L 92%
of the EPA limit 1 µg/L
San Gabriel Valley Water Co.-El Monte El Monte CA
0.8500 µg/L 85%
of the EPA limit 1 µg/L
City of Industry Waterworks Systems La Puente CA
0.8100 µg/L 81%
of the EPA limit 1 µg/L
City of Gonzales Water System Gonzales LA
0.7540 µg/L 75%
of the EPA limit 1 µg/L
Jacksonville Jacksonville IL
0.7200 µg/L 72%
of the EPA limit 1 µg/L
Pleasant View Mhp — PA
0.6900 µg/L 69%
of the EPA limit 1 µg/L
Webster Municipal Water Works Webster IA
0.6460 µg/L 65%
of the EPA limit 1 µg/L
Ridgewood Manor Mhp — MI
0.6400 µg/L 64%
of the EPA limit 1 µg/L
Phillips Mobile Home Park Aspen CO
0.6300 µg/L 63%
of the EPA limit 1 µg/L
Oak Terrace Estates Water System — TX
0.5800 µg/L 58%
of the EPA limit 1 µg/L
Harris County Wcid 114 Houston TX
0.5700 µg/L 57%
of the EPA limit 1 µg/L
Garrison Lake Pump District — —
0.5600 µg/L 56%
of the EPA limit 1 µg/L
Inscription Canyon Water Company Chino Valley AZ
0.5400 µg/L 54%
of the EPA limit 1 µg/L
Noble Oaks Subdivision Water Association Cedar Lake IN
0.5300 µg/L 53%
of the EPA limit 1 µg/L
Glendale-City, Water Dept. Glendale CA
0.5100 µg/L 51%
of the EPA limit 1 µg/L
White Mesa Ntua White Mesa AZ
0.5000 µg/L 50%
of the EPA limit 1 µg/L
Pecatonica Pecatonica IL
0.4800 µg/L 48%
of the EPA limit 1 µg/L
Artesian Water Company — —
0.4700 µg/L 47%
of the EPA limit 1 µg/L
Sisar Mutual Water Co Santa Paula CA
0.4000 µg/L 40%
of the EPA limit 1 µg/L
Walnut Grove Mhc — MI
0.4000 µg/L 40%
of the EPA limit 1 µg/L
Consolidated Mutual Maple Grove Lakewood CO
0.4000 µg/L 40%
of the EPA limit 1 µg/L
Pitkin Water System Pitkin LA
0.3960 µg/L 40%
of the EPA limit 1 µg/L

Frequently asked questions about Pentachlorophenol

What is Pentachlorophenol in drinking water?

Pentachlorophenol was a wood preservative; it damages the liver and kidneys and is a probable carcinogen.

What is the EPA limit for Pentachlorophenol?

The EPA's Maximum Contaminant Level for Pentachlorophenol is 1 µg/L, and its health goal (MCLG) is 0.0 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 Pentachlorophenol in US tap water?

Of the 28,082 water suppliers with results on file, 186 detected Pentachlorophenol — 0.7% of those tested.