What Barium is, and why it's regulated
What the EPA limit means
2000 µg/L
Maximum Contaminant Level — the enforceable ceiling a supplier must stay under.
2000 µg/L
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 Barium was found
The water suppliers reporting the highest levels, worst first.
| Supplier | City | State | Level vs EPA limit |
|---|---|---|---|
| Andover Village Public Water | Andover | NY | 28200 µg/L 1410% of the EPA limit, in the worst sample — 2000 µg/L |
| West Dundee | West Dundee | IL | 16000 µg/L 800% of the EPA limit, in the worst sample — 2000 µg/L |
| Camelot S/D | Garner | NC | 11200 µg/L 560% of the EPA limit, in the worst sample — 2000 µg/L |
| Choconut Creek Apartments | Binghamton | NY | 8960 µg/L 448% of the EPA limit, in the worst sample — 2000 µg/L |
| Watchtower Farms I | Shawangunk | NY | 7900 µg/L 395% of the EPA limit, in the worst sample — 2000 µg/L |
| Country Meadows Mhp | Schuyler | NY | 7700 µg/L 385% of the EPA limit, in the worst sample — 2000 µg/L |
| Indian Lake Wd | Indian Lake | NY | 7100 µg/L 355% of the EPA limit, in the worst sample — 2000 µg/L |
| Moorefield S/D | Knightdale | NC | 7000 µg/L 350% of the EPA limit, in the worst sample — 2000 µg/L |
| Westover Hills Mhp | Ashland | NY | 6500 µg/L 325% of the EPA limit, in the worst sample — 2000 µg/L |
| Redwood Glen Camp & Conference Ctr | Loma Mar | CA | 6200 µg/L 310% of the EPA limit, in the worst sample — 2000 µg/L |
| Sterling Lake | Warwick | NY | 6000 µg/L 300% of the EPA limit, in the worst sample — 2000 µg/L |
| South Elgin | South Elgin | IL | 5500 µg/L 275% of the EPA limit, in the worst sample — 2000 µg/L |
| Jones Dairy Farm S/D | Wake Forest | NC | 5000 µg/L 250% of the EPA limit, in the worst sample — 2000 µg/L |
| Monterey Rural Water System Inc | Monterey | LA | 5000 µg/L 250% of the EPA limit, in the worst sample — 2000 µg/L |
| Napa River Ranch | Napa | CA | 4900 µg/L 245% of the EPA limit, in the worst sample — 2000 µg/L |
| Silver Lake Water Works | Silver Lake | IN | 4600 µg/L 230% of the EPA limit, in the worst sample — 2000 µg/L |
| Bloomfield, Village of | Pell Lake | WI | 4300 µg/L 215% of the EPA limit, in the worst sample — 2000 µg/L |
| German Valley | German Valley | IL | 4100 µg/L 205% of the EPA limit, in the worst sample — 2000 µg/L |
| Stonehenge S/D | Raleigh | NC | 3940 µg/L 197% of the EPA limit, in the worst sample — 2000 µg/L |
| New London Water & Fp Authority | Cropwell | AL | 3703 µg/L 185% of the EPA limit, in the worst sample — 2000 µg/L |
| Oak Brook Estates | Kokomo | OH | 3650 µg/L 183% of the EPA limit, in the worst sample — 2000 µg/L |
| Deerhurst Mhc | Wendell | FL | 3647 µg/L 182% of the EPA limit, in the worst sample — 2000 µg/L |
| Lake Zurich | Lake Zurich | IL | 3400 µg/L 170% of the EPA limit, in the worst sample — 2000 µg/L |
| Summerville Boro Mun Auth | Summerville | PA | 3400 µg/L 170% of the EPA limit, in the worst sample — 2000 µg/L |
| Maple Park | Maple Park | IL | 3370 µg/L 169% of the EPA limit, in the worst sample — 2000 µg/L |
Frequently asked questions about Barium
What is Barium in drinking water?
Barium enters water from natural mineral deposits and drilling waste; high levels can raise blood pressure.
What is the EPA limit for Barium?
The EPA's Maximum Contaminant Level for Barium is 2000 µg/L, and its health goal (MCLG) is 2000 µg/L. A result above the limit means the supplier must act; the goal is the level at which no health effects are expected.
How common is Barium in US tap water?
Of the 33,736 water suppliers with results on file, 26,603 detected Barium — 78.9% of those tested.