Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Haloacetic acids (HAA5)

Erie County Water Authority (ECWA)

Haloacetic acids are formed when disinfectants such as chlorine are added to tap water. The group of five haloacetic acids regulated by federal standards includes monochloroacetic acid, dichloroacetic acid, trichloroacetic acid, monobromoacetic acid and dibromoacetic acid. Read More.

Haloacetic acids are harmful during pregnancy and may increase the risk of cancer. Haloacetic acids are� genotoxic, which means that they induce mutations and DNA damage. Multiple studies by the National Toxicology Program have demonstrated the cancer-causing properties of individual haloacetic acids in laboratory animals. The Department of Health and Human Services is currently considering listing di- or tri-haloacetic acids for possible inclusion in its comprehensive Report on Carcinogens.

Click here to read more about disinfection byproducts.

MORE ABOUT THIS CONTAMINANT

 

282

Samples

1

Samples exceeding legal limit (MCL)

282

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201422.7 ppb48483.01 ppb - 56.2 ppb
201521.5 ppb51518.50 ppb - 56.0 ppb
201621.9 ppb48489.80 ppb - 68.8 ppb
201721.2 ppb47479.60 ppb - 38.3 ppb
201822.1 ppb484810.7 ppb - 44.8 ppb
201919.9 ppb404011.9 ppb - 35.3 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.1 ppb

The EWG Health Guideline of 0.1 ppb for the group of five haloacetic acids, or HAA5, was defined in a peer-reviewed scientific study by EWG and represents a one-in-a-million lifetime cancer risk level. This health guideline protects against cancer.

EPA Maximum Contaminant
Level (MCL) 60 ppb

The legal limit for the group of five haloacetic acids (HAA5), established in 1998, was based on the need for residual disinfectant levels in water served to customers and the cost of treatment. This limit does not fully protect against the risk of cancer and harm to the developing fetus due to exposure to haloacetic acids.

ppb = parts per billion

All test results

Date Lab ID Result
2014-02-1620140216_52356.2 ppb
2014-02-1620140216_49110.7 ppb
2014-02-1620140216_3403.01 ppb
2014-02-1620140216_53037.6 ppb
2014-02-1620140216_48442.7 ppb
2014-02-1620140216_43331.2 ppb
2014-02-1820140218_104717.1 ppb
2014-02-1820140218_40210.6 ppb
2014-02-1820140218_52711.8 ppb
2014-02-1820140218_39323.1 ppb
2014-02-1820140218_29140.2 ppb
2014-02-1820140218_39113.5 ppb
2014-05-192014051925.6 ppb
2014-05-1920140519_39337.8 ppb
2014-05-1920140519_39120.0 ppb
2014-05-1920140519_29125.4 ppb
2014-05-1920140519_40220.3 ppb
2014-05-1920140519_49122.0 ppb
2014-05-1920140519_53030.6 ppb
2014-05-1920140519_104722.7 ppb
2014-05-1920140519_52717.8 ppb
2014-05-1920140519_34021.0 ppb
2014-05-1920140519_52334.4 ppb
2014-05-1920140519_48438.5 ppb
2014-08-181408F19-00512.3 ppb
2014-08-181408F19-01326.0 ppb
2014-08-181408F19-00114.0 ppb
2014-08-181408F19-00431.0 ppb
2014-08-181408F19-02232.0 ppb
2014-08-181408F19-01721.0 ppb
2014-08-181408F19-00825.0 ppb
2014-08-181408F19-01122.0 ppb
2014-08-181408F19-02040.0 ppb
2014-08-181408F19-01615.8 ppb
2014-08-181408F19-01923.0 ppb
2014-08-181408F19-00717.0 ppb
2014-11-171412027-01914.2 ppb
2014-11-171412027-01417.1 ppb
2014-11-171412027-0129.30 ppb
2014-11-171412027-00924.0 ppb
2014-11-171412027-01313.5 ppb
2014-11-171412027-00211.8 ppb
2014-11-171412027-0109.00 ppb
2014-11-171412027-00110.9 ppb
2014-11-171412027-00540.0 ppb
2014-11-171412027-00714.1 ppb
2014-11-171412027-01710.1 ppb
2014-11-171412027-00422.0 ppb
2015-02-17523-2015021731.5 ppb
2015-02-17340-2015021711.1 ppb
2015-02-17391-2015021713.8 ppb
2015-02-17433-2015021715.2 ppb
2015-02-171047-2015021712.9 ppb
2015-02-17291-2015021710.8 ppb
2015-02-17527-2015021711.3 ppb
2015-02-17393-2015021714.8 ppb
2015-02-17491-2015021711.6 ppb
2015-02-17402-201502178.50 ppb
2015-02-17484-2015021755.4 ppb
2015-02-18530-2015021821.1 ppb
2015-05-1820150518-A20.3 ppb
2015-05-18340616W29.0 ppb
2015-05-18340616L20.0 ppb
2015-05-18340616A18.0 ppb
2015-05-18340616R51.0 ppb
2015-05-18340616B25.0 ppb
2015-05-18340616F21.0 ppb
2015-05-1834066BA19.0 ppb
2015-05-1834061619.0 ppb
2015-05-18340616ED32.0 ppb
2015-05-18340616N19.0 ppb
2015-05-182015051818.8 ppb
2015-05-18340616TR30.0 ppb
2015-05-1820150518-B17.8 ppb
2015-05-18340616M23.0 ppb
2015-08-20347018-219.0 ppb
2015-08-20347018-115.0 ppb
2015-08-21347018-456.0 ppb
2015-08-21347018-628.0 ppb
2015-08-21347018-1015.7 ppb
2015-08-21347018-713.1 ppb
2015-08-21347018-913.6 ppb
2015-08-21347018-332.0 ppb
2015-08-21347018-518.0 ppb
2015-08-21347018-1218.0 ppb
2015-08-21347018-811.3 ppb
2015-08-21347018-1118.0 ppb
2015-11-1611/16/2015-48443.0 ppb
2015-11-1611/16/2015-52323.0 ppb
2015-11-1611/16/2015-34022.0 ppb
2015-11-1611/16/2015-53027.0 ppb
2015-11-1611/16/2015-29119.0 ppb
2015-11-1611/16/2015-43315.0 ppb
2015-11-1611/16/2015-49121.0 ppb
2015-11-1611/16/2015-39315.3 ppb
2015-11-1611/16/2015-40224.0 ppb
2015-11-1611/16/2015-104716.4 ppb
2015-11-1611/16/2015-39113.7 ppb
2015-11-1611/16/2015-52718.5 ppb
2016-02-1602/16/2016-52712.5 ppb
2016-02-1602/16/2016-104723.0 ppb
2016-02-1602/16/2016-39121.0 ppb
2016-02-1602/16/2016-29110.5 ppb
2016-02-1602/16/2016-48440.0 ppb
2016-02-1602/16/2016-39317.1 ppb
2016-02-1602/16/2016-40211.8 ppb
2016-02-1702/17/2016-53024.0 ppb
2016-02-1702/17/2016-52325.0 ppb
2016-02-1802/18/2016-43317.0 ppb
2016-02-1802/18/2016-49112.6 ppb
2016-02-1802/18/2016-34010.2 ppb
2016-05-1605/16/2016-48445.0 ppb
2016-05-1605/16/2016-3409.80 ppb
2016-05-1605/16/2016-29111.6 ppb
2016-05-1605/16/2016-53025.0 ppb
2016-05-1605/16/2016-52713.1 ppb
2016-05-1605/16/2016-40214.0 ppb
2016-05-1605/16/2016-43324.0 ppb
2016-05-1605/16/2016-52328.0 ppb
2016-05-1605/16/2016-39117.6 ppb
2016-05-1605/16/2016-49112.0 ppb
2016-05-1605/16/2016-39319.1 ppb
2016-05-1605/16/2016-104712.3 ppb
2016-08-151608H81-00533.2 ppb
2016-08-151608H81-00813.6 ppb
2016-08-151608H81-01016.5 ppb
2016-08-151608H81-00218.4 ppb
2016-08-151608H81-01352.4 ppb
2016-08-151608H81-01234.5 ppb
2016-08-151608H81-01532.7 ppb
2016-08-151608H81-00725.0 ppb
2016-08-151608H81-01468.8 ppb
2016-08-151608H81-00314.2 ppb
2016-08-151608H81-00118.6 ppb
2016-08-151608H81-00925.1 ppb
2016-11-1470495601014.7 ppb
2016-11-1470533500124.5 ppb
2016-11-1470495600815.5 ppb
2016-11-1470495601318.0 ppb
2016-11-1470465600419.8 ppb
2016-11-1470495601418.0 ppb
2016-11-1470495601718.9 ppb
2016-11-1470495601116.8 ppb
2016-11-1470495600115.6 ppb
2016-11-1470495600229.9 ppb
2016-11-1470495600728.5 ppb
2016-11-1470495602022.9 ppb
2017-02-21701195601217.4 ppb
2017-02-21701195602118.9 ppb
2017-02-21701195600216.2 ppb
2017-02-21701195601616.4 ppb
2017-02-21701195600737.0 ppb
2017-02-21701195600435.3 ppb
2017-02-21701195601918.0 ppb
2017-02-21701195600120.8 ppb
2017-02-21701195601424.8 ppb
2017-02-21701195601523.8 ppb
2017-02-21701195600918.4 ppb
2017-05-15TOPS MRKT 51520113.6 ppb
2017-05-15NAPA AUTO 51520116.2 ppb
2017-05-153330 BAKER 515209.90 ppb
2017-05-15RICE HILL 51520138.0 ppb
2017-05-15MARILLA STAT 51514.3 ppb
2017-05-15FELLOW BAP 5152027.4 ppb
2017-05-15WOHLHUETER 515225.6 ppb
2017-05-15TREVETT TANK 51534.5 ppb
2017-05-15AUTO INF 515201720.0 ppb
2017-05-16BENNING TANK 51619.5 ppb
2017-05-16LACK FIRE 2 516215.0 ppb
2017-08-14702732400512.7 ppb
2017-08-14702731900427.6 ppb
2017-08-14702732400315.0 ppb
2017-08-14702731800724.6 ppb
2017-08-14702732400414.9 ppb
2017-08-14702731800238.3 ppb
2017-08-14702732400113.4 ppb
2017-08-14702731800132.7 ppb
2017-08-14702731900236.6 ppb
2017-08-14702731800422.9 ppb
2017-08-15702732400928.0 ppb
2017-08-15702732400819.6 ppb
2017-12-01703714200325.4 ppb
2017-12-0170371420139.60 ppb
2017-12-01703714200117.7 ppb
2017-12-0170371420029.90 ppb
2017-12-01703714201817.0 ppb
2017-12-01703714200429.3 ppb
2017-12-01703714202012.9 ppb
2017-12-01703714200914.6 ppb
2017-12-01703714201137.9 ppb
2017-12-01703714201610.1 ppb
2017-12-01703714201410.4 ppb
2017-12-01703714200717.3 ppb
2017-12-01703714201715.6 ppb
2018-02-12704288600323.2 ppb
2018-02-12704288601142.6 ppb
2018-02-12704288601214.1 ppb
2018-02-12704288600121.6 ppb
2018-02-12704288601016.2 ppb
2018-02-12704288600424.7 ppb
2018-02-12704288600814.3 ppb
2018-02-12704288601912.7 ppb
2018-02-12704288601729.4 ppb
2018-02-12704288601434.8 ppb
2018-02-12704288600526.2 ppb
2018-02-12704288602142.9 ppb
2018-05-14ECWA12 DBP 2ND Q22.2 ppb
2018-05-14ECWA 1 DBP 2ND Q38.2 ppb
2018-05-14ECWA 6 DBP 2ND Q17.8 ppb
2018-05-14ECWA 5 DBP 2ND Q15.1 ppb
2018-05-14ECWA 4 DBP 2ND Q25.1 ppb
2018-05-14ECWA7 DBP 2ND Q22.1 ppb
2018-05-14ECWA9 DBP 2ND Q18.6 ppb
2018-05-14ECWA 3 DBP 2ND Q14.8 ppb
2018-05-14ECWA10 DBP 2ND Q20.1 ppb
2018-05-14ECWA 2 DBP 2ND Q36.0 ppb
2018-05-15ECWA11 DBP 2ND Q19.9 ppb
2018-05-16ECWA8 DBP 2ND Q24.2 ppb
2018-08-13DBP2 ECWA 3RD Q117.7 ppb
2018-08-13DBP2 ECWA 3RDQ 123.0 ppb
2018-08-13DBP2 ECWA 3RDQ1816.1 ppb
2018-08-13DBP2 ECWA 3RD Q14.4 ppb
2018-08-13DBP2 ECWA 3RD Q144.8 ppb
2018-08-13DBP2 ECWA 3RDQ 117.2 ppb
2018-08-13DBP 2 ECWA 3RDQ18.6 ppb
2018-08-13DBP 2 ECWA 3RDQ20.9 ppb
2018-08-13DBP2 ECWA 3RDQ 131.0 ppb
2018-08-13DBP 2 ECWA 3RD Q22.5 ppb
2018-08-13DBP 2 ECWA 3RDQ122.0 ppb
2018-08-13DBP2 ECWA 3RDQ 134.0 ppb
2018-12-04ECWA DBP 4THQ 1822.2 ppb
2018-12-04ECWA DBP 4TH Q 130.0 ppb
2018-12-04ECWA DBP 4THQ 1817.9 ppb
2018-12-04ECWA DBP 4THQ 1815.5 ppb
2018-12-04ECWA DBP2 4THQ1812.3 ppb
2018-12-04ECWA 4TH Q 18 1218.3 ppb
2018-12-04ECWA DBP 4THQ 1811.4 ppb
2018-12-04ECWA DBP 4TH Q 123.3 ppb
2018-12-04DBP2 ECWA 4THQ 112.6 ppb
2018-12-04ECWA DBP2 4THQ 110.7 ppb
2018-12-04ECWA DBP2 4THQ 113.8 ppb
2018-12-04ECWA DBP 4THQ 1813.4 ppb
2019-02-19DBP 1ST Q 29114.6 ppb
2019-02-19SITE 393 DBP 1ST16.3 ppb
2019-02-19491 DBP 1ST Q 1917.3 ppb
2019-02-19530 DBP 1ST Q 1921.7 ppb
2019-02-19SITE 402 DBP 1ST16.5 ppb
2019-02-19527 DBP 1ST Q 1911.9 ppb
2019-02-19523 DBP 1ST Q 1930.4 ppb
2019-02-19SITE 340 1ST Q 215.7 ppb
2019-02-19SITE 391 DBP 1ST15.4 ppb
2019-02-19484 DBP 1ST Q 1935.3 ppb
2019-02-19433 DBP 1ST Q 1919.3 ppb
2019-02-191047 DBP 1ST Q 115.9 ppb
2019-05-211047 DBP 2ND Q 129.5 ppb
2019-05-21393 DBP 2ND Q 1928.5 ppb
2019-06-20340 DBP 2ND Q 1921.3 ppb
2019-06-20402 DBP 2ND Q 1926.7 ppb
2019-08-27530 3RD Q 19 DBP22.1 ppb
2019-08-27491 3RD Q 19 DBP22.4 ppb
2019-08-275223 3RD Q 19 DB24.3 ppb
2019-08-27340 3RD Q 19 DBP21.8 ppb
2019-08-27402 3RD Q 19 DBP25.6 ppb
2019-08-27391 3RD Q 1914.9 ppb
2019-08-27393 3RD Q 19 DBP14.2 ppb
2019-08-27484 3RD Q 19 DBP26.8 ppb
2019-08-27433 3RD Q 19 DBP13.2 ppb
2019-08-27291 3RD Q 19 DBP17.6 ppb
2019-08-27527 3RD Q 19 DBP16.2 ppb
2019-08-271047 3RD Q 19 DB23.7 ppb
2019-11-19433 4TH Q 2019 D16.1 ppb
2019-11-19530 4TH Q 19 DBP21.4 ppb
2019-11-19393 DBP 4TH Q17.2 ppb
2019-11-19402 4TH Q 2019 D16.6 ppb
2019-11-19484 4TH Q 19 DBP21.9 ppb
2019-11-19340 4TH Q DBP18.2 ppb
2019-11-191047 4TH Q 19 DB18.4 ppb
2019-11-19523 4TH Q 19 DBP25.8 ppb
2019-11-19291 DBP 4TH Q18.5 ppb
2019-11-19491 4TH Q 19 DBP13.6 ppb
2019-11-19527 4TH Q 19 DBP17.2 ppb
2019-11-19391 DBP 4TH Q13.6 ppb