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 Monochloroacetic Acid was found
The water suppliers reporting the highest levels, worst first.
| Supplier | City | State | Level vs EPA limit |
|---|---|---|---|
| Midland Boro Muni Auth | Midland | PA | 2300 µg/L No EPA limit set |
| Whitefish City of | Whitefish | MT | 1600 µg/L No EPA limit set |
| Reynolds Water Company | Greenville | PA | 1340 µg/L No EPA limit set |
| North Sewickley Mun Water Auth | Beaver Falls | PA | 1300 µg/L No EPA limit set |
| Bear Valley Joint Auth | St Thomas | PA | 1000 µg/L No EPA limit set |
| Johnsonburg Municipal Auth | Johnsonburg | PA | 1000 µg/L No EPA limit set |
| Monaca Boro Water Dept | Monaca | PA | 630 µg/L No EPA limit set |
| City of Nacogdoches | Nacogdoches | TX | 410 µg/L No EPA limit set |
| Petroleum Valley Rwa | Petrolia | PA | 330 µg/L No EPA limit set |
| Jackson Twp Water Auth | Johnstown | PA | 290 µg/L No EPA limit set |
| Dallas, Town of | Dallas | NC | 193 µg/L No EPA limit set |
| Bodega Water Company | Bodega | CA | 180 µg/L No EPA limit set |
| Longton, City of | Longton | KS | 160 µg/L No EPA limit set |
| Masontown Muni Water Works | Masontown | PA | 160 µg/L No EPA limit set |
| Meyersdale Muni Auth | Meyersdale | PA | 150 µg/L No EPA limit set |
| Bear Springs Trails Subdivision | Pipe Creek | TX | 140.9 µg/L No EPA limit set |
| Williamsburg Public Water Supply | Williamsburg | IA | 138 µg/L No EPA limit set |
| Town of Plain Dealing Water System | Plain Dealing | LA | 135 µg/L No EPA limit set |
| Severy, City of | Severy | KS | 130 µg/L No EPA limit set |
| Seneca Sanitary Dist No 1 | Seneca | WI | 121 µg/L No EPA limit set |
| Town of Ferriday Water System | Ferriday | LA | 120 µg/L No EPA limit set |
| Huston Twp Muni Auth | Penfield | PA | 120 µg/L No EPA limit set |
| Batavia City | — | — | 115 µg/L No EPA limit set |
| Onalaska Waterworks | Onalaska | WI | 113 µg/L No EPA limit set |
| Village of Mermentau Water System | Mermentau | LA | 110 µg/L No EPA limit set |
Frequently asked questions about Monochloroacetic Acid
What is Monochloroacetic Acid in drinking water?
Monochloroacetic Acid 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 Monochloroacetic Acid?
The EPA has not set a numeric Maximum Contaminant Level for Monochloroacetic Acid. It is still measured and reported, so levels can be compared between suppliers.
How common is Monochloroacetic Acid in US tap water?
Of the 28,686 water suppliers with results on file, 10,754 detected Monochloroacetic Acid — 37.5% of those tested.