COPPER, FREE in Drinking Water
100% of 253 recorded violations are health-based - 36 systems in the EPA SDWIS extract.
EPA contaminant code: 1022
COPPER, FREE standing, low-volume SDWIS third
COPPER, FREE is in the lower third by violation volume (253). Sparse counts make each listed system more of the story, the table below is closer to the full affected set than it is for high-volume analytes. Load is concentrated: 7.0 violations per affected system (dense load (> 5.8 violations per affected system)), which usually means repeat findings on the same PWSIDs rather than one-off detections spread thin. Health-based share is 100% - most of this analyte's ledger is MCL or treatment-technique exceedance, not paperwork. Among 157 indexable contaminants, this page is #105 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
COPPER, FREE: mostly health-based findings
100% health-based · 0.0% monitoring/reporting across 253 records.
Most Affected Water Systems
| System | State | Violations | Population |
|---|---|---|---|
| Pottersville Water District | NY | 49 | 300 |
| North Granville WD #1 | NY | 22 | 800 |
| Green Mansions HOA Tennis & Swim | NY | 20 | 180 |
| Northern Adirondack Cen. Sch. | NY | 14 | 1,154 |
| Granville Village | NY | 14 | 2,450 |
| Lewis WD | NY | 12 | 428 |
| Keene WD | NY | 10 | 300 |
| Evergreen Homeowners Assoc. | NY | 8 | 100 |
| Bolton Water District | NY | 7 | 1,800 |
| Metlakatla | 10 | 7 | 1,575 |
| Altona Correctional Facility | NY | 6 | 650 |
| Indian Lake WD | NY | 6 | 900 |
| Chestertown Water District | NY | 6 | 750 |
| Salmon River Central School | NY | 5 | 1,600 |
| Princetown Water Supply | NY | 5 | 900 |
| Charlestown Elementary School | RI | 5 | 350 |
| Putnam Central School | NY | 5 | 60 |
| Quileute Water System | 10 | 4 | 885 |
| Yosemite Nps-Hodgdon Meadow | CA | 4 | 51 |
| Stillwater Village (Scwa) | NY | 4 | 1,600 |
| Cottrell Paper Company | NY | 4 | 37 |
| Arcady Bay Estates | NY | 4 | 470 |
| Washington Center | NY | 4 | 225 |
| Brainardsville WD | NY | 4 | 115 |
| Chateaugay V | NY | 3 | 1,100 |
| Agri-Mark Inc | NY | 3 | 150 |
| Belleayre Ski Center | NY | 3 | 260 |
| Long Lake WD | NY | 3 | 800 |
| Paul Smiths College | NY | 3 | 1,100 |
| Del Oro Water Co.-Magalia | CA | 2 | 340 |
Context: understanding water quality data · is my water safe?
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.