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EPA SDWIS

Gross Beta Particle Activity in Drinking Water

4.1 violations per affected system (3,274 across 792) - mid load (≤ 5.8 violations per affected system).

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EPA contaminant code: 4100

Total Violations
3,274
Systems Affected
792
Health-Based %
0.1%
Violations / System
4.1

Gross Beta Particle Activity standing, mid-volume SDWIS third

Gross Beta Particle Activity lands in the middle third by violation volume (3,274), 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 4.1 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 #92 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

Chlorite (3,255) Stage 2 Disinfectants and Disinfection Byproducts Rule (3,102) COLIPHAGE (2,523) Chloramine (2,449)

Nearest by systems affected

Long Term 2 Enhanced Surface Water Treatment Rule (871 systems) Stage 1 Disinfectants and Disinfection Byproducts Rule (1,347 systems) Cryptosporidium (202 systems) Coliform (Pre-TCR) (174 systems)

Gross Beta Particle Activity: mixed health vs monitoring split

0.1% health-based · 99.9% monitoring/reporting across 3,274 records.

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

Most Affected Water Systems

System State Violations Population
Eastside MHP OK 268 32
Brooksville OK 164 90
Pecan Tree Water Assn OK 106 22
Rock Creek OK 54 33
Southern Hills Estates OK 51 200
Konawa PWA OK 42 1,479
Grady Co RWD #2 OK 39 455
Abes RV Park OK 39 175
Jefferson Co Cons RWD #1 OK 37 8,398
Gracemont PWA OK 34 336
Bristow Municipal Authority OK 32 3,700
Canoe Mountain Water System OK 31 26
England Shores MHP OK 31 55
Bridgeport OK 30 109
Stonetown Clearview Mhc OK 30 170
Walnut Park Estates OK 28 42
4T Investors LLC OK 25 98
Sasakwa PWA OK 25 150
Penn State Univ PA 25 37,000
Wayne Water Districts NC 24 39,403
Apache OK 22 1,521
Chattanooga PWS OK 21 627
Deer Creek Rural Water Corp OK 21 5,500
Welch PWA OK 20 800
Craig Co RWS & Swmd #3 OK 20 1,100
Canute OK 20 524
Oak Ridge Estates I & II Water Assoc. OK 20 62
Southern Okla Water Corp OK 18 11,250
Blue Jacket PWA OK 16 274
Harper Co RWD #1 OK 16 198

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.