DC Water & Sewer Authority is a large public water system in EPA region 03 that provides tap water for the 20001 - 20013, 20016 - 20020, 20024, 20027, 20030, 20033, 20036 - 20045, 20049, 20050, 20053, 20056 - 20071, 20074 - 20078, 20081, 20082, 20091, 20202 - 20204, 20207, 20208, 20211 - 20224, 20227 - 20230, 20233, 20237 - 20242, 20245, 20251, 20252, 20260 - 20262, 20266, 20270, 20289, 20301, 20306, 20314, 20318, 20319, 20340, 20355, 20372 - 20376, 20388 - 20395, 20401 - 20408, 20411 - 20429, 20433 - 20437, 20440 - 20442, 20447, 20453, 20460, 20468 - 20470, 20500 - 20511, 20520 - 20531, 20534 - 20544, 20547 - 20549, 20552 - 20555, 20559, 20560, 20566, 20571 - 20573, 20576 - 20581, 20586, 20591, 20594, 20599 zip codes. It has 3 facilities where the water supply was tested for 23 chemical contaminants that impact tap water quality and human health.
1-butanol is a class of Alcohol that has a minimum reporting level of 2 µg/L and a reference level of 700 µg/L. All the latest water samples for DC Water & Sewer Authority showed levels of 1-butanol that were below unsafe concentration levels. Learn more about 1-butanol.
| Dale 18 Dalecarlia Connection
| 11/14/2018 80 months ago
| <2.0 µg/L Below Reporting Level
|
|---|---|---|
| McMillan J South McMillan Connection
| 11/14/2018 80 months ago
| <2.0 µg/L Below Reporting Level
|
2-methoxyethanol is a class of Alcohol that has a minimum reporting level of 0.4 µg/L and a reference level of 21 µg/L. All the latest water samples for DC Water & Sewer Authority showed levels of 2-methoxyethanol that were below unsafe concentration levels. Learn more about 2-methoxyethanol.
| Dale 18 Dalecarlia Connection
| 11/14/2018 80 months ago
| <0.4 µg/L Below Reporting Level
|
|---|---|---|
| McMillan J South McMillan Connection
| 11/14/2018 80 months ago
| <0.4 µg/L Below Reporting Level
|
2-propen-1-ol (Allyl Alcohol) is a class of Alcohol that has a minimum reporting level of 0.5 µg/L and a reference level of 35 µg/L. All the latest water samples for DC Water & Sewer Authority showed levels of 2-propen-1-ol (Allyl Alcohol) that were below unsafe concentration levels. Learn more about 2-propen-1-ol (Allyl Alcohol).
| Dale 18 Dalecarlia Connection
| 11/14/2018 80 months ago
| <0.5 µg/L Below Reporting Level
|
|---|---|---|
| McMillan J South McMillan Connection
| 11/14/2018 80 months ago
| <0.5 µg/L Below Reporting Level
|
HAA5 (five regulated haloacetic acids) are a class of Disinfection Byproducts that includes Dibromoacetic Acid, Dichloroacetic Acid, Monobromoacetic Acid, Monochloroacetic Acid, Trichloroacetic Acid and has a minimum reporting level of 0.5 µg/L and a reference level of 60 µg/L. All the latest water samples for DC Water & Sewer Authority showed levels of HAA5 (five regulated haloacetic acids) that were below unsafe concentration levels. The maximum reported value was 38.3 µg/L. Learn more about HAA5 (five regulated haloacetic acids).
| 8th St. NE Distribution System
| 11/14/2018 80 months ago
| 35 µg/L ⚠️ Exceeds 50% of Reference Level
|
|---|---|---|
| E. Capital St. NE Distribution System
| 11/14/2018 80 months ago
| 37.9 µg/L ⚠️ Exceeds 50% of Reference Level
|
| Bunker Hill Rd. NE Distribution System
| 11/14/2018 80 months ago
| 7.5 µg/L Meets Reporting Threshold
|
| Rhode Island Ave. NE Distribution System
| 11/14/2018 80 months ago
| 33 µg/L ⚠️ Exceeds 50% of Reference Level
|
| Kenndey St. NW Distribution System
| 11/14/2018 80 months ago
| 38.3 µg/L ⚠️ Exceeds 50% of Reference Level
|
| Kalmia Rd. NW Distribution System
| 11/14/2018 80 months ago
| 16.2 µg/L Meets Reporting Threshold
|
| Broad Branch Rd. NW Distribution System
| 11/14/2018 80 months ago
| 31.8 µg/L ⚠️ Exceeds 50% of Reference Level
|
| 56th St. NE Distribution System
| 11/14/2018 80 months ago
| 13.6 µg/L Meets Reporting Threshold
|
| Martin Luther King Ave. SE Distribution System
| 11/14/2018 80 months ago
| 35 µg/L ⚠️ Exceeds 50% of Reference Level
|
| Overlook Ave. SW Distribution System
| 11/14/2018 80 months ago
| 34 µg/L ⚠️ Exceeds 50% of Reference Level
|
| 49th St. NE Distribution System
| 11/14/2018 80 months ago
| 30 µg/L Meets Reporting Threshold
|
| Water St. SW Distribution System
| 11/14/2018 80 months ago
| 32 µg/L ⚠️ Exceeds 50% of Reference Level
|
HAA6Br (six brominated haloacetic acids) are a class of Disinfection Byproducts that includes Bromochloroacetic Acid, Bromodichloroacetic Acid, Dibromoacetic Acid, Dibromochloroacetic Acid, Monobromoacetic Acid, Tribromoacetic Acid and has a minimum reporting level of 0 µg/L and is a potential threat to human health. Learn more about HAA6Br (six brominated haloacetic acids).
| 8th St. NE Distribution System
| 11/14/2018 80 months ago
| 7.22 µg/L |
|---|---|---|
| E. Capital St. NE Distribution System
| 11/14/2018 80 months ago
| 7.92 µg/L |
| Bunker Hill Rd. NE Distribution System
| 11/14/2018 80 months ago
| 1.81 µg/L |
| Rhode Island Ave. NE Distribution System
| 11/14/2018 80 months ago
| 6.8 µg/L |
| Kenndey St. NW Distribution System
| 11/14/2018 80 months ago
| 7.23 µg/L |
| Kalmia Rd. NW Distribution System
| 11/14/2018 80 months ago
| 3.02 µg/L |
| Broad Branch Rd. NW Distribution System
| 11/14/2018 80 months ago
| 6.72 µg/L |
| 56th St. NE Distribution System
| 11/14/2018 80 months ago
| 3.25 µg/L |
| Martin Luther King Ave. SE Distribution System
| 11/14/2018 80 months ago
| 7.2 µg/L |
| Overlook Ave. SW Distribution System
| 11/14/2018 80 months ago
| 7.41 µg/L |
| 49th St. NE Distribution System
| 11/14/2018 80 months ago
| 6.56 µg/L |
| Water St. SW Distribution System
| 11/14/2018 80 months ago
| 6.68 µg/L |
HAA9 (nine haloacetic acids) are a class of Disinfection Byproducts that includes Bromochloroacetic Acid, Bromodichloroacetic Acid, Chlorodibromoacetic Acid, Dibromoacetic Acid, Dichloroacetic Acid, Monobromoacetic Acid, Monochloroacetic Acid, Tribromoacetic Acid, Trichloroacetic Acid and has a minimum reporting level of 0 µg/L and is a potential threat to human health. Learn more about HAA9 (nine haloacetic acids).
| 8th St. NE Distribution System
| 11/14/2018 80 months ago
| 42.22 µg/L |
|---|---|---|
| E. Capital St. NE Distribution System
| 11/14/2018 80 months ago
| 45.82 µg/L |
| Bunker Hill Rd. NE Distribution System
| 11/14/2018 80 months ago
| 9.31 µg/L |
| Rhode Island Ave. NE Distribution System
| 11/14/2018 80 months ago
| 39.8 µg/L |
| Kenndey St. NW Distribution System
| 11/14/2018 80 months ago
| 45.53 µg/L |
| Kalmia Rd. NW Distribution System
| 11/14/2018 80 months ago
| 19.22 µg/L |
| Broad Branch Rd. NW Distribution System
| 11/14/2018 80 months ago
| 38.52 µg/L |
| 56th St. NE Distribution System
| 11/14/2018 80 months ago
| 16.85 µg/L |
| Martin Luther King Ave. SE Distribution System
| 11/14/2018 80 months ago
| 42.2 µg/L |
| Overlook Ave. SW Distribution System
| 11/14/2018 80 months ago
| 41.41 µg/L |
| 49th St. NE Distribution System
| 11/14/2018 80 months ago
| 36.56 µg/L |
| Water St. SW Distribution System
| 11/14/2018 80 months ago
| 38.68 µg/L |
alpha-hexachlorocyclohexane is a chemical contaminant that has a reference level of 0.006 µg/L. All the latest water samples for DC Water & Sewer Authority showed levels of alpha-hexachlorocyclohexane that were below unsafe concentration levels. Learn more about alpha-hexachlorocyclohexane.
| Dale 18 Dalecarlia Connection
| 11/14/2018 80 months ago
| <0.01 µg/L Below Reporting Level
|
|---|---|---|
| McMillan J South McMillan Connection
| 11/14/2018 80 months ago
| <0.01 µg/L Below Reporting Level
|
anatoxin-a is a chemical contaminant that is a potential threat to human health. Learn more about anatoxin-a.
| Dale 18 Dalecarlia Connection
| 10/15/2018 81 months ago
| <0.03 µg/L Below Reporting Level
|
|---|---|---|
| McMillan J South McMillan Connection
| 10/15/2018 81 months ago
| <0.03 µg/L Below Reporting Level
|
Butylated Hydroxyanisole is a chemical contaminant that is a potential threat to human health. Learn more about Butylated Hydroxyanisole.
| Dale 18 Dalecarlia Connection
| 11/14/2018 80 months ago
| <0.03 µg/L Below Reporting Level
|
|---|---|---|
| McMillan J South McMillan Connection
| 11/14/2018 80 months ago
| <0.03 µg/L Below Reporting Level
|
chlorpyrifos is a chemical contaminant that has a reference level of 2 µg/L. All the latest water samples for DC Water & Sewer Authority showed levels of chlorpyrifos that were below unsafe concentration levels. Learn more about chlorpyrifos.
| Dale 18 Dalecarlia Connection
| 11/14/2018 80 months ago
| <0.03 µg/L Below Reporting Level
|
|---|---|---|
| McMillan J South McMillan Connection
| 11/14/2018 80 months ago
| <0.03 µg/L Below Reporting Level
|
cylindrospermopsin is a chemical contaminant that has a reference level of 0.7 µg/L. All the latest water samples for DC Water & Sewer Authority showed levels of cylindrospermopsin that were below unsafe concentration levels. Learn more about cylindrospermopsin.
| Dale 18 Dalecarlia Connection
| 10/15/2018 81 months ago
| <0.09 µg/L Below Reporting Level
|
|---|---|---|
| McMillan J South McMillan Connection
| 10/15/2018 81 months ago
| <0.09 µg/L Below Reporting Level
|
dimethipin is a chemical contaminant that has a reference level of 140 µg/L. All the latest water samples for DC Water & Sewer Authority showed levels of dimethipin that were below unsafe concentration levels. Learn more about dimethipin.
| Dale 18 Dalecarlia Connection
| 11/14/2018 80 months ago
| <0.2 µg/L Below Reporting Level
|
|---|---|---|
| McMillan J South McMillan Connection
| 11/14/2018 80 months ago
| <0.2 µg/L Below Reporting Level
|
ethoprop is a chemical contaminant that has a reference level of 1.14 µg/L. All the latest water samples for DC Water & Sewer Authority showed levels of ethoprop that were below unsafe concentration levels. Learn more about ethoprop.
| Dale 18 Dalecarlia Connection
| 11/14/2018 80 months ago
| <0.03 µg/L Below Reporting Level
|
|---|---|---|
| McMillan J South McMillan Connection
| 11/14/2018 80 months ago
| <0.03 µg/L Below Reporting Level
|
Germanium is a chemical contaminant that is a potential threat to human health. Learn more about Germanium.
| Dale 18 Dalecarlia Connection
| 11/14/2018 80 months ago
| <0.3 µg/L Below Reporting Level
|
|---|---|---|
| McMillan J South McMillan Connection
| 11/14/2018 80 months ago
| <0.3 µg/L Below Reporting Level
|
Manganese is a chemical contaminant that has a reference level of 300 µg/L. All the latest water samples for DC Water & Sewer Authority showed levels of Manganese that were below unsafe concentration levels. The maximum reported value was 0.75 µg/L. Learn more about Manganese.
| Dale 18 Dalecarlia Connection
| 11/14/2018 80 months ago
| .75 µg/L Meets Reporting Threshold
|
|---|---|---|
| McMillan J South McMillan Connection
| 11/14/2018 80 months ago
| <0.4 µg/L Below Reporting Level
|
o-toluidine is a chemical contaminant that is a potential threat to human health. Learn more about o-toluidine.
| Dale 18 Dalecarlia Connection
| 11/14/2018 80 months ago
| <0.007 µg/L Below Reporting Level
|
|---|---|---|
| McMillan J South McMillan Connection
| 11/14/2018 80 months ago
| <0.007 µg/L Below Reporting Level
|
oxyfluorfen is a chemical contaminant that has a reference level of 200 µg/L. All the latest water samples for DC Water & Sewer Authority showed levels of oxyfluorfen that were below unsafe concentration levels. Learn more about oxyfluorfen.
| Dale 18 Dalecarlia Connection
| 11/14/2018 80 months ago
| <0.05 µg/L Below Reporting Level
|
|---|---|---|
| McMillan J South McMillan Connection
| 11/14/2018 80 months ago
| <0.05 µg/L Below Reporting Level
|
profenofos is a chemical contaminant that has a reference level of 0.3 µg/L. All the latest water samples for DC Water & Sewer Authority showed levels of profenofos that were below unsafe concentration levels. Learn more about profenofos.
| Dale 18 Dalecarlia Connection
| 11/14/2018 80 months ago
| <0.3 µg/L Below Reporting Level
|
|---|---|---|
| McMillan J South McMillan Connection
| 11/14/2018 80 months ago
| <0.3 µg/L Below Reporting Level
|
quinoline is a chemical contaminant that has a reference level of 0.01 µg/L. All the latest water samples for DC Water & Sewer Authority showed levels of quinoline that were below unsafe concentration levels. Learn more about quinoline.
| Dale 18 Dalecarlia Connection
| 11/14/2018 80 months ago
| <0.02 µg/L Below Reporting Level
|
|---|---|---|
| McMillan J South McMillan Connection
| 11/14/2018 80 months ago
| <0.02 µg/L Below Reporting Level
|
tebuconazole is a chemical contaminant that has a reference level of 190 µg/L. All the latest water samples for DC Water & Sewer Authority showed levels of tebuconazole that were below unsafe concentration levels. Learn more about tebuconazole.
| Dale 18 Dalecarlia Connection
| 11/14/2018 80 months ago
| <0.2 µg/L Below Reporting Level
|
|---|---|---|
| McMillan J South McMillan Connection
| 11/14/2018 80 months ago
| <0.2 µg/L Below Reporting Level
|
Total Microcystin is a chemical contaminant that has a reference level of 0.3 µg/L. All the latest water samples for DC Water & Sewer Authority showed levels of Total Microcystin that were below unsafe concentration levels. Learn more about Total Microcystin.
| Dale 18 Dalecarlia Connection
| 10/15/2018 81 months ago
| <0.3 µg/L Below Reporting Level
|
|---|---|---|
| McMillan J South McMillan Connection
| 10/15/2018 81 months ago
| <0.3 µg/L Below Reporting Level
|
Total Permethrin is a chemical contaminant that has a reference level of 3.344 µg/L. All the latest water samples for DC Water & Sewer Authority showed levels of Total Permethrin that were below unsafe concentration levels. Learn more about Total Permethrin.
| Dale 18 Dalecarlia Connection
| 11/14/2018 80 months ago
| <0.04 µg/L Below Reporting Level
|
|---|---|---|
| McMillan J South McMillan Connection
| 11/14/2018 80 months ago
| <0.04 µg/L Below Reporting Level
|
tribufos is a chemical contaminant that has a reference level of 0.6 µg/L. All the latest water samples for DC Water & Sewer Authority showed levels of tribufos that were below unsafe concentration levels. Learn more about tribufos.
| Dale 18 Dalecarlia Connection
| 11/14/2018 80 months ago
| <0.07 µg/L Below Reporting Level
|
|---|---|---|
| McMillan J South McMillan Connection
| 11/14/2018 80 months ago
| <0.07 µg/L Below Reporting Level
|
| Facility Name | Water Type/Source |
|---|---|
| Dalecarlia Connection | Surface Water (SW) |
| McMillan Connection | Surface Water (SW) |
| Distribution System | Surface Water (SW) |
The latest water samples were taken between October 15th, 2018 and November 14th, 2018.