National Drinking Water Database
Dichloroacetic acid in Iowa
Dichloroacetic acid is a disinfection byproduct regulated by EPA as one of five haloacetic acids that are formed when chlorine, chloramines or other disinfectants react with organic and inorganic matter in water. [read more]
The Most Polluted Communities in Iowa
650 water utilities reported detecting Dichloroacetic acid in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies
Ranked by highest average Dichloroacetic acid level
| Rank | System | Population Served | Positive test results of total reported tests | Average Level (Range) |
|---|---|---|---|---|
| 1 | Bloomfield Muni Water Dept Bloomfield, IA | 2,601 | 22 of 22 | 37.49 ppb (7.65 to 113 ppb) |
| 2 | Davis City Water Supply Creston, IA | 275 | 14 of 14 | 27 ppb (11 to 44 ppb) |
| 3 | Ellston Municipal Water Works Creston, IA | 57 | 14 of 14 | 26.5 ppb (14 to 38 ppb) |
| 4 | Sirwa #3 (Osceola) Creston, IA | 2,260 | 23 of 23 | 25.8 ppb (17 to 57 ppb) |
| 5 | Blockton Water Supply Blockton, IA | 192 | 5 of 5 | 25.4 ppb (25 to 27 ppb) |
| 6 | Kellerton Water Supply Kellerton, IA | 372 | 9 of 9 | 25 ppb (21 to 31 ppb) |
| 7 | Southwest Reg Water District (Clarinda) Clarinda, IA | 2,092 | 21 of 22 | 24.8 ppb (0 to 49 ppb) |
| 8 | Diagonal Water Department Diagonal, IA | 312 | 13 of 13 | 24.69 ppb (16 to 32 ppb) |
| 9 | Sirwa #2 (Creston) Creston, IA | 22,721 | 28 of 28 | 24.54 ppb (15.75 to 38.75 ppb) |
| 10 | Bedford Water Works Bedford, IA | 1,620 | 21 of 23 | 24.05 ppb (0 to 50.2 ppb) |
Health Based Limits for Dichloroacetic acid
| Standard | Description | Level |
|---|---|---|
| Maximum Contaminant Limit Goal (MCLG) | A non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency. | 0 ppb |
| One in one million (10-6) Cancer Risk | The concentration of a chemical in drinking water corresponding to an excess estimated lifetime cancer risk of 1 in 1,000,000. Source: U.S. Environmental Protection Agency. | 0.7 ppb |
| Maximum Contaminant Limit (MCL) | The enforceable standard which defines the highest level of a contaminant that is allowed in drinking water. MCLs are set as close to health-based limits (Maximum Contaminant Level Goals, or MCLGs) as feasible using the best available analytical and treatment technologies and taking cost into consideration. Source: U.S. Environmental Protection Agency. | 60 ppb |
| One in ten thousand (10-4) Cancer Risk | The concentration of a chemical in drinking water corresponding to an excess estimated lifetime cancer risk of 1 in 10,000. Source: U.S. Environmental Protection Agency. | 70 ppb |
| Drinking Water Equivalent Level | A lifetime exposure concentration protective of adverse, noncarcinogenic health effects, that assumes all of the exposure to a contaminant is from drinking water. Source: U.S. Environmental Protection Agency. | 100 ppb |
| Children's health-based limit for 1-day exposure | Concentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic health effects for up to one day of exposure. The One-Day health-based limit (or Health Advisory, HA) is typically set to protect a 10-kg child consuming 1 liter of water per day. Source: U.S. Environmental Protection Agency. | 5000 ppb |
| Children's health-based limit for 10-day exposure | Concentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic effects for up to ten days of exposure. The Ten-Day health-based limit (or Health Advisory, HA) is typically set to protect a 10-kg child consuming 1 liter of water per day. Source: U.S. Environmental Protection Agency. | 5000 ppb |
Violation Summary for Dichloroacetic acid in Iowa
There are no violations reported for this contaminant in Iowa