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EPA SDWIS

Nickel in Drinking Water

4.0 violations per affected system (29,603 across 7,418) - mid load (≤ 5.8 violations per affected system).

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EPA contaminant code: 1036

Total Violations
29,603
Systems Affected
7,418
Health-Based %
0.4%
Violations / System
4.0

Nickel standing, mid-volume SDWIS third

Nickel lands in the middle third by violation volume (29,603), 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 4.0 violations per affected system (mid load (≤ 5.8 violations per affected system)). Health-based share is only 0.4% - almost all of this analyte's trail is monitoring/reporting rather than MCL exceedance. Among 157 indexable contaminants, this page is #81 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

Diquat (29,815) CYANIDE (28,582) Endothall (26,423) LEAD AND COPPER RULE REVISIONS (32,859)

Nearest by systems affected

Dalapon (7,487 systems) ETHYLENE DIBROMIDE (7,606 systems) HEXACHLOROBENZENE (7,902 systems) Benzo(a)pyrene (7,904 systems)

Nickel: mixed health vs monitoring split

0.4% health-based · 99.6% monitoring/reporting across 29,603 records.

Health-based (0.4%) Monitoring/Reporting (99.6%)

Most Affected Water Systems

System State Violations Population
Ridgefield Public Works WA 113 20,967
PA American Audubon PA 76 8,200
Coal Mountain Water WV 56 80
Hiawatha Water WV 51 63
Nottingham Manor M H Court PA 49 473
Washington Township Mua NJ 48 48,000
Shrewsbury Borough PA 48 4,727
Iron Oak Energy Wyeville Dry Plant WI 46 39
Culvers Hill - North Webster IN 40 75
Pinnacle Water Association WV 40 85
Happy Camper RV Park CO 37 40
Creekside South Estates Metro District CO 36 160
Burlington City Of CO 36 3,720
Windmill Estates IL 36 65
South Bend Water Department WA 36 2,930
East Cherry Creek Valley WSD CO 34 66,130
Paint Brush Hills CO 34 4,994
Willow Springs MHP IN 34 25
Deerfield Park S/D NC 33 440
Hilltop Village Association PA 32 86
Far Away Auburn PA 32 25
Akhiok AK 31 90
Estates at Bromley CO 30 150
Pacheco Trailer Park CO 30 36
Whispering Pines MHP NC 30 305
Mount Eagle Water Assoc PA 29 130
Central Hampshire Psd Green Spring WV 29 1,046
Town of Princess Anne MD 28 3,300
Maybrook Village NY 28 3,150
Robinwood Village PA 28 70

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.