What the EPA limit means
No federal limit
The EPA has not set an enforceable numeric limit for this contaminant.
—
Health goal (MCLG) — the level with no known health effect. It is a goal, not a legal limit, and is often zero for carcinogens.
SYR4
Where these measurements come from. Hover the tag for the EPA programme and years.
Where Gross Beta Particle Activity was found
The water suppliers reporting the highest levels, worst first.
| Supplier | City | State | Level vs EPA limit |
|---|---|---|---|
| Silver Creek Village Wsc | Burnet | TX | 597 pCi/L No EPA limit set |
| So. Cal. Edison Co.-Santa Catalina | Avalon | CA | 390 pCi/L No EPA limit set |
| Carlsbad Desalination Plant | Carlsbad | CA | 327 pCi/L No EPA limit set |
| Shelby, City of | Shelby | NC | 261 pCi/L No EPA limit set |
| Ramah Town of | Ramah | CO | 239 pCi/L No EPA limit set |
| Brownsville Waterworks | Brownsville | WI | 188 pCi/L No EPA limit set |
| Rye Field Manor Elderly Housing | Old Lyme | CT | 177 pCi/L No EPA limit set |
| Ak-Chin Village | Ak-Chin Village | AZ | 163 pCi/L No EPA limit set |
| Trinidad City of | Trinidad | CO | 144 pCi/L No EPA limit set |
| Chart House Condominium | Richardson | TX | 130 pCi/L No EPA limit set |
| Millersview Doole Wsc | Millersview | TX | 116 pCi/L No EPA limit set |
| Council Creek Village | Des Peres | MO | 113 pCi/L No EPA limit set |
| Lymewood Elderly Housing | Old Lyme | CT | 104 pCi/L No EPA limit set |
| Tradewinds S/D | Raleigh | NC | 97.8 pCi/L No EPA limit set |
| Middleburg, Town of | Mount Jackson | VA | 95.8 pCi/L No EPA limit set |
| Lagoon Point Water District | Greenbank | WA | 92 pCi/L No EPA limit set |
| Kensington Place S/D | Oak Ridge | AL | 88.6 pCi/L No EPA limit set |
| Arbor Hills Water Works | Lewisboro | NY | 78.1 pCi/L No EPA limit set |
| City of Brady Water System | Brady | TX | 74.3 pCi/L No EPA limit set |
| Tow Water System | Austin | TX | 74.2 pCi/L No EPA limit set |
| Scwa, Chesterfield Division | Montville | CT | 71 pCi/L No EPA limit set |
| Saratoga Springs City | Saratoga Springs | UT | 70 pCi/L No EPA limit set |
| City of San Angelo | San Angelo | TX | 66.5 pCi/L No EPA limit set |
| Contra Costa Water District | Concord | CA | 65 pCi/L No EPA limit set |
| South Council Creek 2 | Des Peres | MO | 59.5 pCi/L No EPA limit set |
Frequently asked questions about Gross Beta Particle Activity
What is Gross Beta Particle Activity in drinking water?
Gross Beta Particle Activity is monitored in US public drinking water under EPA rules. Each supplier's result is reported to the EPA and published here with its source and period.
Does the EPA limit Gross Beta Particle Activity?
The EPA has not set a numeric Maximum Contaminant Level for Gross Beta Particle Activity. It is still measured and reported, so levels can be compared between suppliers.
How common is Gross Beta Particle Activity in US tap water?
Of the 10,700 water suppliers with results on file, 6,294 detected Gross Beta Particle Activity — 58.8% of those tested.