Monochloroacetic acid
Butte-Silver Bow Water Department
Monochloroacetic acid, one of the group of five haloacetic acids regulated by federal standards, is formed when chlorine or other disinfectants are used to treat drinking water. Haloacetic acids and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | 0.535 ppb | 48 | 24 | ND - 1.60 ppb |
2015 | 0.571 ppb | 48 | 20 | ND - 3.40 ppb |
2016 | 0.503 ppb | 48 | 21 | ND - 1.80 ppb |
2017 | 1.02 ppb | 32 | 26 | ND - 2.20 ppb |
2018 | 0.180 ppb | 16 | 3 | ND - 1.10 ppb |
2019 | 0.0994 ppb | 16 | 2 | ND - 0.810 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 53 ppb
The EWG Health Guideline of 53 ppb for monochloroacetic acid was proposed in 2020 by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk.. This health guideline protects against system toxicity.
ppb = parts per billion
All test results
Date | Lab ID | Result |
---|---|---|
2014-03-12 | B14030943-001B | 0.770 ppb |
2014-03-12 | B14030943-002B | ND |
2014-03-12 | B14030943-003B | ND |
2014-03-12 | B14030943-004B | 0.750 ppb |
2014-03-12 | B14030943-005B | ND |
2014-03-12 | B14030943-006B | ND |
2014-03-12 | B14030943-007B | ND |
2014-03-12 | B14030943-008B | ND |
2014-03-12 | B14030943-009B | 0.810 ppb |
2014-03-12 | B14030943-010B | 0.880 ppb |
2014-03-12 | B14030943-011B | 1.60 ppb |
2014-03-12 | B14030943-012B | ND |
2014-06-09 | B14060874-001B | 1.20 ppb |
2014-06-09 | B14060874-002B | 1.20 ppb |
2014-06-09 | B14060874-003B | 1.40 ppb |
2014-06-09 | B14060874-004B | 1.10 ppb |
2014-06-09 | B14060874-005B | 0.910 ppb |
2014-06-09 | B14060874-006B | 1.10 ppb |
2014-06-09 | B14060874-007B | ND |
2014-06-09 | B14060874-008B | 0.960 ppb |
2014-06-09 | B14060874-009B | ND |
2014-06-09 | B14060874-010B | ND |
2014-06-09 | B14060874-011B | ND |
2014-06-09 | B14060874-012B | ND |
2014-09-15 | B14091399-001B | 1.10 ppb |
2014-09-15 | B14091399-002B | 1.20 ppb |
2014-09-15 | B14091399-003B | 1.60 ppb |
2014-09-15 | B14091399-004B | 1.40 ppb |
2014-09-15 | B14091399-005B | 1.10 ppb |
2014-09-15 | B14091399-006B | 1.20 ppb |
2014-09-15 | B14091399-007B | 0.890 ppb |
2014-09-15 | B14091399-008B | 1.10 ppb |
2014-09-15 | B14091399-009B | 0.950 ppb |
2014-09-15 | B14091399-010B | 0.940 ppb |
2014-09-15 | B14091399-011B | 0.780 ppb |
2014-09-15 | B14091399-012B | ND |
2014-12-10 | B14121049-001B | 0.760 ppb |
2014-12-10 | B14121049-002B | ND |
2014-12-10 | B14121049-003B | ND |
2014-12-10 | B14121049-004B | ND |
2014-12-10 | B14121049-005B | ND |
2014-12-10 | B14121049-006B | ND |
2014-12-10 | B14121049-007B | ND |
2014-12-10 | B14121049-008B | ND |
2014-12-10 | B14121049-009B | ND |
2014-12-10 | B14121049-010B | ND |
2014-12-10 | B14121049-011B | ND |
2014-12-10 | B14121049-012B | ND |
2015-03-09 | B15030709-001B | ND |
2015-03-09 | B15030709-002B | ND |
2015-03-09 | B15030709-003B | ND |
2015-03-09 | B15030709-004B | ND |
2015-03-09 | B15030709-005B | ND |
2015-03-09 | B15030709-006B | ND |
2015-03-09 | B15030709-007B | ND |
2015-03-09 | B15030709-008B | ND |
2015-03-09 | B15030709-009B | ND |
2015-03-09 | B15030709-010B | ND |
2015-03-09 | B15030709-011B | ND |
2015-03-09 | B15030709-012B | ND |
2015-06-08 | B15060859-001B | 1.000 ppb |
2015-06-08 | B15060859-002B | 1.40 ppb |
2015-06-08 | B15060859-003B | 1.20 ppb |
2015-06-08 | B15060859-004B | 1.90 ppb |
2015-06-08 | B15060859-005B | 1.60 ppb |
2015-06-08 | B15060859-006B | 0.770 ppb |
2015-06-08 | B15060859-007B | 3.40 ppb |
2015-06-08 | B15060859-008B | 2.30 ppb |
2015-06-08 | B15060859-009B | 0.940 ppb |
2015-06-08 | B15060859-010B | ND |
2015-06-08 | B15060859-011B | ND |
2015-06-08 | B15060859-012B | ND |
2015-09-14 | B15091265-001B | 1.000 ppb |
2015-09-14 | B15091265-002B | 0.790 ppb |
2015-09-14 | B15091265-003B | 1.50 ppb |
2015-09-14 | B15091265-004B | 1.40 ppb |
2015-09-14 | B15091265-005B | 1.30 ppb |
2015-09-14 | B15091265-006B | 1.50 ppb |
2015-09-14 | B15091265-007B | 0.920 ppb |
2015-09-14 | B15091265-008B | 1.50 ppb |
2015-09-14 | B15091265-009B | 0.750 ppb |
2015-09-14 | B15091265-010B | 0.840 ppb |
2015-09-14 | B15091265-011B | 1.40 ppb |
2015-09-14 | B15091265-012B | ND |
2015-12-09 | B15120901-001B | ND |
2015-12-09 | B15120901-002B | ND |
2015-12-09 | B15120901-003B | ND |
2015-12-09 | B15120901-004B | ND |
2015-12-09 | B15120901-005B | ND |
2015-12-09 | B15120901-006B | ND |
2015-12-09 | B15120901-007B | ND |
2015-12-09 | B15120901-008B | ND |
2015-12-09 | B15120901-009B | ND |
2015-12-09 | B15120901-010B | ND |
2015-12-09 | B15120901-011B | ND |
2015-12-09 | B15120901-012B | ND |
2016-03-09 | B16031005-001B | ND |
2016-03-09 | B16031005-002B | ND |
2016-03-09 | B16031005-003B | ND |
2016-03-09 | B16031005-004B | ND |
2016-03-09 | B16031005-005B | ND |
2016-03-09 | B16031005-006B | ND |
2016-03-09 | B16031005-007B | ND |
2016-03-09 | B16031005-008B | ND |
2016-03-09 | B16031005-009B | ND |
2016-03-09 | B16031005-010B | ND |
2016-03-09 | B16031005-011B | ND |
2016-03-09 | B16031005-012B | ND |
2016-06-07 | B16060715-001B | 1.80 ppb |
2016-06-07 | B16060715-002B | 1.20 ppb |
2016-06-07 | B16060715-003B | 1.50 ppb |
2016-06-07 | B16060715-004B | 1.30 ppb |
2016-06-07 | B16060715-005B | 1.10 ppb |
2016-06-07 | B16060715-006B | 0.940 ppb |
2016-06-07 | B16060715-007B | 1.30 ppb |
2016-06-07 | B16060715-008B | 0.910 ppb |
2016-06-07 | B16060715-009B | 0.980 ppb |
2016-06-07 | B16060715-010B | 0.850 ppb |
2016-06-07 | B16060715-011B | 0.790 ppb |
2016-06-07 | B16060715-012B | ND |
2016-09-08 | B16090760-001B | 1.40 ppb |
2016-09-08 | B16090760-002B | 0.910 ppb |
2016-09-08 | B16090760-003B | 1.30 ppb |
2016-09-08 | B16090760-004B | 1.30 ppb |
2016-09-08 | B16090760-005B | 1.10 ppb |
2016-09-08 | B16090760-006B | 1.30 ppb |
2016-09-08 | B16090760-007B | ND |
2016-09-08 | B16090760-008B | 1.10 ppb |
2016-09-08 | B16090760-009B | 0.880 ppb |
2016-09-08 | B16090760-010B | 1.10 ppb |
2016-09-08 | B16090760-011B | 1.10 ppb |
2016-09-08 | B16090760-012B | ND |
2016-12-12 | B16120906-001B | ND |
2016-12-12 | B16120906-002B | ND |
2016-12-12 | B16120906-003B | ND |
2016-12-12 | B16120906-004B | ND |
2016-12-12 | B16120906-005B | ND |
2016-12-12 | B16120906-006B | ND |
2016-12-12 | B16120906-007B | ND |
2016-12-12 | B16120906-008B | ND |
2016-12-12 | B16120906-009B | ND |
2016-12-12 | B16120906-010B | ND |
2016-12-12 | B16120906-011B | ND |
2016-12-12 | B16120906-012B | ND |
2017-03-13 | B17030964-001B | 1.000 ppb |
2017-03-13 | B17030964-002B | 1.20 ppb |
2017-03-13 | B17030964-003B | 1.20 ppb |
2017-03-13 | B17030964-004B | 1.000 ppb |
2017-03-13 | B17030964-005B | 1.20 ppb |
2017-03-13 | B17030964-006B | 1.20 ppb |
2017-03-13 | B17030964-007B | 1.30 ppb |
2017-03-13 | B17030964-008B | 0.930 ppb |
2017-03-13 | B17030964-009B | 1.10 ppb |
2017-03-13 | B17030964-010B | 1.20 ppb |
2017-03-13 | B17030964-011B | 1.000 ppb |
2017-03-13 | B17030964-012B | ND |
2017-06-13 | B17061376-001A | 0.820 ppb |
2017-06-13 | B17061376-002A | 1.000 ppb |
2017-06-13 | B17061376-003A | 0.800 ppb |
2017-06-13 | B17061376-004A | 1.60 ppb |
2017-06-13 | B17061376-005A | 1.80 ppb |
2017-06-13 | B17061376-006A | 1.90 ppb |
2017-06-13 | B17061376-007A | 2.20 ppb |
2017-06-13 | B17061376-008A | 1.80 ppb |
2017-06-13 | B17061376-009A | 1.40 ppb |
2017-06-13 | B17061376-010A | 1.30 ppb |
2017-06-13 | B17061376-011A | 1.30 ppb |
2017-06-13 | B17061376-012A | 1.000 ppb |
2017-09-13 | B17091212-001B | 1.10 ppb |
2017-09-13 | B17091212-002B | 1.30 ppb |
2017-09-13 | B17091212-003B | ND |
2017-09-13 | B17091212-004B | ND |
2017-12-13 | B17121307-001B | 0.850 ppb |
2017-12-13 | B17121307-002B | ND |
2017-12-13 | B17121307-003B | ND |
2017-12-13 | B17121307-004B | ND |
2018-03-14 | B18031225-001B | ND |
2018-03-14 | B18031225-002B | ND |
2018-03-14 | B18031225-003B | ND |
2018-03-14 | B18031225-004B | ND |
2018-06-11 | B18061054-001B | 1.10 ppb |
2018-06-11 | B18061054-002B | 1.000 ppb |
2018-06-11 | B18061054-003B | ND |
2018-06-11 | B18061054-004B | 0.780 ppb |
2018-09-11 | B18090899-001A | ND |
2018-09-11 | B18090899-002A | ND |
2018-09-11 | B18090899-003A | ND |
2018-09-11 | B18090899-004A | ND |
2018-12-12 | B18121075-001A | ND |
2018-12-12 | B18121075-002A | ND |
2018-12-12 | B18121075-003A | ND |
2018-12-12 | B18121075-004A | ND |
2019-03-13 | B19031024-001A | ND |
2019-03-13 | B19031024-002A | ND |
2019-03-13 | B19031024-003A | ND |
2019-03-13 | B19031024-004A | ND |
2019-06-12 | B19061217-001A | 0.780 ppb |
2019-06-12 | B19061217-002A | 0.810 ppb |
2019-06-12 | B19061217-003A | ND |
2019-06-12 | B19061217-004A | ND |
2019-09-11 | B19091090-001A | ND |
2019-09-11 | B19091090-002A | ND |
2019-09-11 | B19091090-003A | ND |
2019-09-11 | B19091090-004A | ND |
2019-12-11 | B19121117-001A | ND |
2019-12-11 | B19121117-002A | ND |
2019-12-11 | B19121117-003A | ND |
2019-12-11 | B19121117-004A | ND |