What Bromate is, and why it's regulated
What the EPA limit means
10 µg/L
Maximum Contaminant Level — the enforceable ceiling a supplier must stay under.
0.0 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 Bromate 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 |
|---|---|---|---|
| West Grand Valley Wa | Rocky Ford | CO | 171.33 µg/L 1713% of the EPA limit, at the 95th percentile of samples — 10 µg/L |
| Hilltop Wc | Rocky Ford | CO | 164.65 µg/L 1647% of the EPA limit, at the 95th percentile of samples — 10 µg/L |
| Riverside Wc | Rocky Ford | CO | 114.875 µg/L 1149% of the EPA limit, at the 95th percentile of samples — 10 µg/L |
| Vaughn Wc Inc | Bakersfield | CA | 100.55 µg/L 1006% of the EPA limit, at the 95th percentile of samples — 10 µg/L |
| Crwa Lake Dunlap Wtp | — | TX | 73.04 µg/L 730% of the EPA limit, at the 95th percentile of samples — 10 µg/L |
| Bassi Ranch Mutual Water Co. | Grover Beach | CA | 63.9 µg/L 639% of the EPA limit, at the 95th percentile of samples — 10 µg/L |
| Chandler City of | Chandler | AZ | 63.8 µg/L 638% of the EPA limit, at the 95th percentile of samples — 10 µg/L |
| City of Cushing | Cushing | TX | 49.1 µg/L 491% of the EPA limit, at the 95th percentile of samples — 10 µg/L |
| Lawton | Lawton | OK | 42.97 µg/L 430% of the EPA limit, at the 95th percentile of samples — 10 µg/L |
| Manhattan Beach-City, Water Dept. | Manhattan Beach | CA | 38.1 µg/L 381% of the EPA limit, at the 95th percentile of samples — 10 µg/L |
| Konocti County Water District | Clearlake | CA | 36.2 µg/L 362% of the EPA limit, at the 95th percentile of samples — 10 µg/L |
| Oklahoma City | Oklahoma City | OK | 34.14 µg/L 341% of the EPA limit, at the 95th percentile of samples — 10 µg/L |
| Emporia, City of | Emporia | KS | 28.65 µg/L 287% of the EPA limit, at the 95th percentile of samples — 10 µg/L |
| Mesa City of | Mesa | AZ | 28.29 µg/L 283% of the EPA limit, at the 95th percentile of samples — 10 µg/L |
| City of Stockton | Stockton | CA | 26.95 µg/L 270% of the EPA limit, at the 95th percentile of samples — 10 µg/L |
| Rayburn Country Mud | Jasper | TX | 26 µg/L 260% of the EPA limit, at the 95th percentile of samples — 10 µg/L |
| Hastings Muni Auth | Hastings | PA | 23 µg/L 230% of the EPA limit, at the 95th percentile of samples — 10 µg/L |
| Amarillo Municipal Water System | — | TX | 20.81 µg/L 208% of the EPA limit, at the 95th percentile of samples — 10 µg/L |
| Southwest Milam Wsc | Rockdale | TX | 19.7625 µg/L 198% of the EPA limit, at the 95th percentile of samples — 10 µg/L |
| Iola, City of | Iola | KS | 19.1 µg/L 191% of the EPA limit, at the 95th percentile of samples — 10 µg/L |
| Ingalls Water Company | Ingalls | IN | 17.95 µg/L 180% of the EPA limit, at the 95th percentile of samples — 10 µg/L |
| Central Wy Regional Water System Jpb | Casper | WY | 16.4 µg/L 164% of the EPA limit, at the 95th percentile of samples — 10 µg/L |
| Antelope Valley E Kern Wtr Agy-Rosamond | — | CA | 15.75 µg/L 158% of the EPA limit, at the 95th percentile of samples — 10 µg/L |
| Mwra | Boston | MA | 15.6 µg/L 156% of the EPA limit, at the 95th percentile of samples — 10 µg/L |
| Fargo City of | Fargo | ND | 14.7 µg/L 147% of the EPA limit, at the 95th percentile of samples — 10 µg/L |
Frequently asked questions about Bromate
What is Bromate in drinking water?
Bromate forms when ozone used to disinfect water reacts with natural bromide; it is a probable carcinogen.
What is the EPA limit for Bromate?
The EPA's Maximum Contaminant Level for Bromate is 10 µg/L, and its health goal (MCLG) is 0.0 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 Bromate in US tap water?
Of the 338 water suppliers with results on file, 167 detected Bromate — 49.4% of those tested.