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.
UCMR-5
Where these measurements come from. Hover the tag for the EPA programme and years.
Where Pfhxa was found
The water suppliers reporting the highest levels, worst first. For lead and copper that is the 90th-percentile result the action level is written against; for Six-Year Review data, the 95th percentile of each system's samples.
| Supplier | City | State | Level vs EPA limit |
|---|---|---|---|
| Experimental | Juana Diaz | PR | 0.2600 µg/L No EPA limit set |
| Widefield Wsd | Colorado Springs | CO | 0.1406 µg/L No EPA limit set |
| Commonwealth Utilities Corp (Saipan) | Saipan | MP | 0.1216 µg/L No EPA limit set |
| Emerald Coast Utilities Authority (Ecua) | Pensacola | FL | 0.1110 µg/L No EPA limit set |
| Telford Borough Authority | Telford | PA | 0.0946 µg/L No EPA limit set |
| Caernarvon Twp Auth | Morgantown | PA | 0.0920 µg/L No EPA limit set |
| Artesian Water Company | — | — | 0.0722 µg/L No EPA limit set |
| Great Bend, City of | Great Bend | KS | 0.0690 µg/L No EPA limit set |
| Yeshiva Farm Settlement | New Castle | NY | 0.0690 µg/L No EPA limit set |
| Georgetown Water Department | Georgetown | DE | 0.0680 µg/L No EPA limit set |
| Hatfield Water Dept | Hatfield | MA | 0.0608 µg/L No EPA limit set |
| Raynham Center Water District | Raynham | MA | 0.0588 µg/L No EPA limit set |
| Mdwasa - Main System | Miami | FL | 0.0580 µg/L No EPA limit set |
| Bayleaf Master | Raleigh | NC | 0.0573 µg/L No EPA limit set |
| North Bay Village, City of | North Bay Village | FL | 0.0529 µg/L No EPA limit set |
| Valley Utilities Water Company Glendale | Glendale | AZ | 0.0520 µg/L No EPA limit set |
| Ottawa Village | Ottawa | OH | 0.0518 µg/L No EPA limit set |
| Fountain City of | Fountain | CO | 0.0508 µg/L No EPA limit set |
| Southwood | Tacoma | WA | 0.0480 µg/L No EPA limit set |
| Suffolk County Water Authority | Southold | NY | 0.0435 µg/L No EPA limit set |
| Stratmoor Hills Wsd | Colorado Springs | CO | 0.0420 µg/L No EPA limit set |
| Emmaus Borough Public Water | Emmaus | PA | 0.0415 µg/L No EPA limit set |
| Yarmouth Water Department | Yarmouth | MA | 0.0406 µg/L No EPA limit set |
| Bal Harbour Village | Bal Harbour | FL | 0.0380 µg/L No EPA limit set |
| Gwa Northern Water System | Tumon | GU | 0.0371 µg/L No EPA limit set |
Frequently asked questions about Pfhxa
What is Pfhxa in drinking water?
Pfhxa 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 Pfhxa?
The EPA has not set a numeric Maximum Contaminant Level for Pfhxa. It is still measured and reported, so levels can be compared between suppliers.
How common is Pfhxa in US tap water?
Of the 9,676 water suppliers with results on file, 1,707 detected Pfhxa — 17.6% of those tested.