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EPA SDWIS High-volume analyte Dense per-system load

Combined Uranium in Drinking Water

41.6 violations per affected system (184,297 across 4,427) - dense load (> 5.8 violations per affected system).

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EPA contaminant code: 4006

Total Violations
184,297
Systems Affected
4,427
Health-Based %
10.2%
Violations / System
41.6

Combined Uranium standing, high-volume SDWIS third

Combined Uranium sits in the upper third of this extract by raw violation count (184,297), so the national record is thick enough that system-level lists below are a sample of a much larger compliance trail rather than a near-complete inventory. Load is concentrated: 41.6 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 10.2% - a material slice of the record is exposure-relevant, with the rest monitoring or reporting. Among 157 indexable contaminants, this page is #10 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

Arsenic (171,997) Chlorine (199,108) Consumer Confidence Rule (201,666) Surface Water Treatment Rule (165,477)

Nearest by systems affected

Glyphosate (5,017 systems) Endothall (5,163 systems) Radium-228 (3,547 systems) Radium-226 (3,237 systems)

Combined Uranium: mixed health vs monitoring split

10.2% health-based · 89.8% monitoring/reporting across 184,297 records.

Health-based (10.2%) Monitoring/Reporting (89.8%)

Most Affected Water Systems

System State Violations Population
West Jackson Co Utility Dist MS 1,132 28,544
Town of Aberdeen MS 864 7,783
Keesler Air Force Base MS 785 8,006
Rosemount Water Co NV 582 54
City of New Albany MS 534 8,900
City of Ripley MS 532 11,351
City of Gulfport MS 502 75,056
Buckatunna Water Association MS 496 4,686
Sebastopol Water Association MS 494 6,207
City of Pontotoc MS 488 9,398
City of Corinth MS 456 15,000
Barrontown W/A MS 438 7,999
City of Biloxi MS 432 23,310
Tallahala W/A-Antioch MS 430 3,427
Wren W/A MS 430 3,068
North Lee W/a #1-Barnes Crosng MS 428 2,672
Smiths Crossing Water Assn MS 420 4,480
City of Ocean Springs MS 416 26,168
City of Greenville MS 416 29,602
Tunica County Utility District MS 405 6,690
City of Forest MS 402 5,430
Harrisville W/A MS 384 1,967
City of Senatobia MS 380 8,354
Gulf Park MS 379 4,813
Mooreville-Richmond W/a #1 MS 377 3,807
J P Utility District MS 360 3,839
Riviera Wcid TX 358 729
Shady Grove Utility District MS 356 2,390
Copiah-New Zion Water Assn,inc MS 352 3,791
Hub Water Association MS 352 3,260

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.