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EPA SDWIS ~155K water systems EPA + UCMR5

Radium-228

EPA SDWIS quarterly extract data for this analyte. Detection counts and health-based violation counts reflect the most recent federal release.

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EPA contaminant code: 4030

Total Violations
113,334
Systems Affected
3,547
Health-Based %
0%
Most Affected State
-

What this means

Radium-228 appears in EPA SDWIS with 113,334 recorded violations across 3,547 public water systems. Of those, 0% are classified as health-based, meaning the reading exceeded a federally enforceable Maximum Contaminant Level or a treatment-technique requirement rather than a monitoring or reporting lapse. Health-based violations are the subset that trigger formal corrective action and public notification, so the share is a useful signal of real-world exposure risk rather than paperwork drift. State-level concentration data is not consistently reported for this contaminant, so regional interpretation should lean on the system table below rather than state aggregates. Utilities listed below are ranked by cumulative violation count, so a higher rank reflects persistence in the record rather than a single spike; readers comparing systems should consider population served alongside violation count to gauge how many households were actually exposed.

Violation Type Split

Radium-228 violations broken down by EPA classification.

Health-based (0%) Monitoring/Reporting (100%)

Health-based violations indicate the contaminant exceeded an EPA Maximum Contaminant Level (MCL) or treatment-technique requirement; monitoring/reporting violations are procedural.

Most Affected Water Systems

System State Violations Population
West Jackson Co Utility Dist MS 669 28,544
Town of Aberdeen MS 590 7,783
Keesler Air Force Base MS 533 8,006
City of Ripley MS 364 11,351
City of New Albany MS 364 8,900
City of Pontotoc MS 360 9,398
Sebastopol Water Association MS 360 6,207
Buckatunna Water Association MS 360 4,686
Barrontown W/A MS 324 7,999
North Lee W/a #1-Barnes Crosng MS 320 2,672
Harrisville W/A MS 312 1,967
Circle H MHP NC 311 68
City of Ocean Springs MS 308 26,168
Gulf Park MS 300 4,813
Tallahala W/A-Antioch MS 300 3,427
Wren W/A MS 300 3,068
Smiths Crossing Water Assn MS 300 4,480
Copiah-New Zion Water Assn,inc MS 284 3,791
J P Utility District MS 280 3,839
Mooreville-Richmond W/a #1 MS 277 3,807
City of Forest MS 264 5,430
City of Senatobia MS 260 8,354
Shady Grove Utility District MS 256 2,390
Town of Sallis MS 240 2,785
Rawls Springs Utility District MS 240 3,168
G T & Y Water District Inc MS 240 3,965
Poor House W/a #1 MS 240 2,806
City of Waveland MS 240 6,400
Lorman Water Association MS 240 2,162
City of Ellisville MS 240 4,600

Drinking Water Guides

Understanding Water Quality Data

What EPA SDWIS tracks, how violations are classified, and what MCLs mean.
PFAS in Drinking Water

What forever chemicals are, EPA testing results, and 2024 standards.
Is My Water Safe?

How to assess your local water quality and when to take precautions.

Frequently Asked Questions

What is Radium-228 in drinking water? ▼
Radium-228 is a contaminant tracked by the EPA under the Safe Drinking Water Act. It has caused 113,334 violations across 3,547 public water systems nationwide. 0% of these violations are health-based, meaning the contaminant exceeded Maximum Contaminant Levels (MCLs) or treatment technique requirements.
How many water systems have Radium-228 violations? ▼
3,547 public water systems across the United States have at least one Radium-228 violation recorded in the EPA SDWIS database.
Are Radium-228 violations dangerous? ▼
0% of Radium-228 violations are health-based, meaning the contaminant level exceeded safe limits set by the EPA. Health-based violations require corrective action by the water system. Not all violations indicate immediate health risk, but they signal that water quality standards were not met.
Which state has the most Radium-228 violations? ▼
State-level breakdown data is not available for this contaminant.
Where does this contaminant data come from? ▼
All violation data comes from the EPA Safe Drinking Water Information System (SDWIS), which tracks compliance for all public water systems regulated under the Safe Drinking Water Act. SDWIS records violations including Maximum Contaminant Level (MCL) exceedances, treatment technique failures, and monitoring/reporting issues.

Data Sources

Contaminant violation data from the EPA Safe Drinking Water Information System (SDWIS). Violations are categorized as health-based (Maximum Contaminant Level exceedances, treatment technique failures) or monitoring/reporting violations.

Related

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

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.