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EPA SDWIS

Pentachlorophenol in Drinking Water

5.5 violations per affected system (47,460 across 8,602) - mid load (≤ 5.8 violations per affected system).

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EPA contaminant code: 2326

Total Violations
47,460
Systems Affected
8,602
Health-Based %
0.1%
Violations / System
5.5

Pentachlorophenol standing, mid-volume SDWIS third

Pentachlorophenol lands in the middle third by violation volume (47,460), large enough for peer comparisons but not one of the handful of analytes that dominate the fleet-wide SDWIS ledger. Load sits mid-pack at 5.5 violations per affected system (mid load (≤ 5.8 violations per affected system)). Health-based share is only 0.1% - almost all of this analyte's trail is monitoring/reporting rather than MCL exceedance. Among 157 indexable contaminants, this page is #58 by violation volume. Utilities listed below are ranked by cumulative violation count for this analyte; pair that with population served to gauge household exposure scale.

Nationwide similar contaminants

Nearest by violation volume

2,4,5-TP (47,520) Toxaphene (47,945) Chlordane (46,503) Di(2-ethylhexyl) phthalate (48,493)

Nearest by systems affected

Beryllium, Total (8,691 systems) Picloram (8,434 systems) Thallium, Total (8,780 systems) Heptachlor (8,396 systems)

Pentachlorophenol: mixed health vs monitoring split

0.1% health-based · 99.9% monitoring/reporting across 47,460 records.

Health-based (0.1%) Monitoring/Reporting (99.9%)

Most Affected Water Systems

System State Violations Population
Salem Heights Estate PA 156 62
Congregation Ohr Menachem PA 148 30
Skyview Estates IL 124 56
Prague OK 111 2,395
Dabob Cove Community WA 110 24
Marble Water System WA 107 94
Vista del Rio Mobile Home Park WA 90 352
27 Maple Drive CT 88 38
Aqua PA Sun Valley PA 79 120
Lewis River Golf Course WA 77 300
Indian Creek Valley Water Auth PA 76 7,000
Neshaminy Manor Center PA 74 2,100
Springhill Park Subdivision MT 72 90
Sage Hills Second Water System WA 71 34
Christ Mission Lutheran Church IL 70 150
PA American Audubon PA 67 8,200
Willow Springs MHP IN 66 25
Helena RV and Mobile Home Park MT 66 250
Taggares Fruit Co WA 66 152
Paradise Stream Resor PA 65 774
Oilton OK 64 1,435
Seneca Trail Christian Academy WV 64 100
Malta City Of MT 63 1,800
Congregation Beth Judea IL 62 25
Save a Pet IL 61 50
Newport Boro Water Auth PA 61 3,200
Bella Vista City Water System AZ 60 20,045
Ambler Boro Water Dept PA 60 20,000
Vogel Farm Spring Water Co PA 60 25
Taleem Ul Haq IL 56 100

Context: understanding water quality data · is my water safe?

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the EPA Safe Drinking Water Information System (SDWIS). Consult a qualified professional before making decisions based on this data.

Read our methodology - how this data is sourced, computed, and verified.

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This page draws directly on EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.