Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Chlorite

City of Longview

Chlorite is a disinfection byproduct resulting from water treatment with chlorine dioxide. Chlorite decreases hemoglobin levels and causes other hematologic effects. Read More.

Chlorite also forms when chlorine dioxide is used as a bleaching agent for textiles, paper pulp, flour and oils, and from the use of chlorine dioxide in food and packaging.� In 2009, California published a public health goal of 50 parts per billion for chlorite in drinking water. California state scientists reported that chlorite causes red blood cell damage, affects sperm and thyroid function, and may alter behavior and neurodevelopment of rat pups exposed in the womb.

Click here to read more about disinfection byproducts.

 

433

Samples

0

Samples exceeding legal limit (MCL)

301

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014115.6 ppb7258ND - 280.0 ppb
2015154.7 ppb7353ND - 440.0 ppb
2016172.9 ppb7266ND - 540.0 ppb
2017224.7 ppb7265ND - 580.0 ppb
2018177.8 ppb7250ND - 708.0 ppb
201969.6 ppb7252ND - 320.0 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 50 ppb

The EWG Health Guideline of 50 ppb for chlorite was defined 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 change in blood chemistry.

EPA Maximum Contaminant
Level (MCL) 1,000 ppb

ppb = parts per billion

All test results

Date Lab ID Result
2014-01-0214-0106-180.0 ppb
2014-01-0214-0106-2ND
2014-01-0214-0106-6120.0 ppb
2014-01-0214-0106-380.0 ppb
2014-01-0214-0106-4150.0 ppb
2014-01-0214-0106-580.0 ppb
2014-02-0314-0206-580.0 ppb
2014-02-0314-0206-2ND
2014-02-0314-0206-690.0 ppb
2014-02-0314-0206-3ND
2014-02-0314-0206-4100.0 ppb
2014-02-0314-0206-1100.0 ppb
2014-03-0414-0310-2ND
2014-03-0414-0310-3140.0 ppb
2014-03-0414-0310-180.0 ppb
2014-03-0414-0310-6160.0 ppb
2014-03-0414-0310-4160.0 ppb
2014-03-0414-0310-5100.0 ppb
2014-04-0214-0404-10ND
2014-04-0214-0404-12ND
2014-04-0214-0404-14160.0 ppb
2014-04-0214-0404-11ND
2014-04-0214-0404-13210.0 ppb
2014-04-1414-0404-15160.0 ppb
2014-05-0514-0507-1960.0 ppb
2014-05-0514-0507-18120.0 ppb
2014-05-0514-0507-22190.0 ppb
2014-05-0514-0507-20140.0 ppb
2014-05-0514-0507-21190.0 ppb
2014-05-0514-0507-23190.0 ppb
2014-06-0914-0611-6130.0 ppb
2014-06-0914-0611-9ND
2014-06-0914-0611-5ND
2014-06-0914-0611-870.0 ppb
2014-06-0914-0611-4ND
2014-06-0914-0611-7130.0 ppb
2014-07-0914-0711-11ND
2014-07-0914-0711-12110.0 ppb
2014-07-0914-0711-15110.0 ppb
2014-07-0914-0711-13170.0 ppb
2014-07-0914-0711-14160.0 ppb
2014-07-0914-0711-10110.0 ppb
2014-08-1214-0815-1380.0 ppb
2014-08-1214-0815-16100.0 ppb
2014-08-1214-0815-17110.0 ppb
2014-08-1214-0815-1420.0 ppb
2014-08-1214-0815-18100.0 ppb
2014-08-1214-0815-15130.0 ppb
2014-09-0914-0912-5280.0 ppb
2014-09-0914-0912-8180.0 ppb
2014-09-0914-0912-7190.0 ppb
2014-09-0914-0912-10150.0 ppb
2014-09-0914-0912-690.0 ppb
2014-09-0914-0912-9110.0 ppb
2014-10-0614-1008-22ND
2014-10-0614-1008-26110.0 ppb
2014-10-0614-1008-23140.0 ppb
2014-10-0614-1008-24170.0 ppb
2014-10-0614-1008-21160.0 ppb
2014-10-0614-1008-25140.0 ppb
2014-11-0514-1107-10200.0 ppb
2014-11-0514-1107-13210.0 ppb
2014-11-0514-1107-12210.0 ppb
2014-11-0514-1107-15210.0 ppb
2014-11-0514-1107-11ND
2014-11-0514-1107-14200.0 ppb
2014-12-1114-1216-2ND
2014-12-1114-1216-6230.0 ppb
2014-12-1114-1216-3210.0 ppb
2014-12-1114-1216-4230.0 ppb
2014-12-1114-1216-1210.0 ppb
2014-12-1114-1216-5220.0 ppb
2015-01-0815-0112-7200.0 ppb
2015-01-0815-0112-650.0 ppb
2015-01-0815-0112-4200.0 ppb
2015-01-0815-0112-5ND
2015-01-0815-0112-840.0 ppb
2015-01-0815-0112-950.0 ppb
2015-02-0315-0206-12100.0 ppb
2015-02-0315-0206-15ND
2015-02-0315-0206-11ND
2015-02-0315-0206-14ND
2015-02-0315-0206-10180.0 ppb
2015-02-0315-0206-13220.0 ppb
2015-03-0315-0310-4260.0 ppb
2015-03-0315-0310-7360.0 ppb
2015-03-0315-0310-6210.0 ppb
2015-03-0315-0310-9ND
2015-03-0315-0310-5ND
2015-03-0315-0310-8200.0 ppb
2015-04-1315-0415-27230.0 ppb
2015-04-1315-0415-24120.0 ppb
2015-04-1315-0415-26110.0 ppb
2015-04-1315-0415-2940.0 ppb
2015-04-1315-0415-25ND
2015-04-1315-0415-2820.0 ppb
2015-05-1415-0519-8ND
2015-05-1415-0519-12ND
2015-05-1415-0519-9ND
2015-05-1415-0519-10200.0 ppb
2015-05-1415-0519-7160.0 ppb
2015-05-1415-0519-11ND
2015-06-0915-0611-11ND
2015-06-0915-0611-15170.0 ppb
2015-06-0915-0611-12160.0 ppb
2015-06-0915-0611-13200.0 ppb
2015-06-0915-0611-10100.0 ppb
2015-06-0915-0611-14170.0 ppb
2015-07-1015-0721-2ND
2015-07-1015-0721-6260.0 ppb
2015-07-1015-0721-4290.0 ppb
2015-07-1015-0721-1360.0 ppb
2015-07-1015-0721-3310.0 ppb
2015-07-1015-0721-5280.0 ppb
2015-08-1015-0812-52310.0 ppb
2015-08-1015-0812-53240.0 ppb
2015-08-1015-0812-50340.0 ppb
2015-08-1015-0812-55240.0 ppb
2015-08-1015-0812-54240.0 ppb
2015-08-1015-0812-5130.0 ppb
2015-09-0915-0911-5ND
2015-09-0915-0911-5ND
2015-09-0915-0911-9290.0 ppb
2015-09-0915-0911-6400.0 ppb
2015-09-0915-0911-7280.0 ppb
2015-09-0915-0911-4350.0 ppb
2015-09-0915-0911-8280.0 ppb
2015-10-1915-1021-3260.0 ppb
2015-10-1915-1021-7310.0 ppb
2015-10-1915-1021-430.0 ppb
2015-10-1915-1021-8280.0 ppb
2015-10-1915-1021-5310.0 ppb
2015-10-1915-1021-6270.0 ppb
2015-11-1115-1113-13190.0 ppb
2015-11-1115-1113-11300.0 ppb
2015-11-1115-1113-16ND
2015-11-1115-1113-14250.0 ppb
2015-11-1115-1113-12ND
2015-11-1115-1113-15120.0 ppb
2015-12-0115-1203-26ND
2015-12-0115-1203-30ND
2015-12-0115-1203-27100.0 ppb
2015-12-0115-1203-28180.0 ppb
2015-12-0115-1203-25440.0 ppb
2015-12-0115-1203-29ND
2016-01-1316-0115-15370.0 ppb
2016-01-1316-0115-18140.0 ppb
2016-01-1316-0115-1650.0 ppb
2016-01-1316-0115-2050.0 ppb
2016-01-1316-0115-17210.0 ppb
2016-01-1316-0115-1990.0 ppb
2016-02-1116-0216-7340.0 ppb
2016-02-1116-0216-10160.0 ppb
2016-02-1116-0216-9440.0 ppb
2016-02-1116-0216-12110.0 ppb
2016-02-1116-0216-8210.0 ppb
2016-02-1116-0216-11150.0 ppb
2016-03-0916-0311-6190.0 ppb
2016-03-0916-0311-10170.0 ppb
2016-03-0916-0311-7280.0 ppb
2016-03-0916-0311-8190.0 ppb
2016-03-0916-0311-5440.0 ppb
2016-03-0916-0311-9170.0 ppb
2016-04-1116-0413-23180.0 ppb
2016-04-1116-0413-27130.0 ppb
2016-04-1116-0413-24240.0 ppb
2016-04-1116-0413-25140.0 ppb
2016-04-1116-0413-22260.0 ppb
2016-04-1116-0413-26130.0 ppb
2016-05-0916-0511-19150.0 ppb
2016-05-0916-0511-16300.0 ppb
2016-05-0916-0511-18300.0 ppb
2016-05-0916-0511-20140.0 ppb
2016-05-0916-0511-17220.0 ppb
2016-05-0916-0511-21170.0 ppb
2016-06-0116-0603-16200.0 ppb
2016-06-0116-0603-13300.0 ppb
2016-06-0116-0603-15390.0 ppb
2016-06-0116-0603-18120.0 ppb
2016-06-0116-0603-14240.0 ppb
2016-06-0116-0603-17170.0 ppb
2016-07-1116-0713-47400.0 ppb
2016-07-1116-0713-5060.0 ppb
2016-07-1116-0713-5160.0 ppb
2016-07-1116-0713-48190.0 ppb
2016-07-1116-0713-4970.0 ppb
2016-07-1116-0713-46540.0 ppb
2016-08-1516-0817-9260.0 ppb
2016-08-1516-0817-12110.0 ppb
2016-08-1516-0817-1180.0 ppb
2016-08-1516-0817-1470.0 ppb
2016-08-1516-0817-10ND
2016-08-1516-0817-1380.0 ppb
2016-09-0616-0908-49120.0 ppb
2016-09-0616-0908-46240.0 ppb
2016-09-0616-0908-50100.0 ppb
2016-09-0616-0908-47250.0 ppb
2016-09-0616-0908-48130.0 ppb
2016-09-0616-0908-45290.0 ppb
2016-10-1816-1020-11100.0 ppb
2016-10-1816-1020-14140.0 ppb
2016-10-1816-1020-1370.0 ppb
2016-10-1816-1020-16120.0 ppb
2016-10-1816-1020-12ND
2016-10-1816-1020-15130.0 ppb
2016-11-0316-1107-7110.0 ppb
2016-11-0316-1107-10120.0 ppb
2016-11-0316-1107-9120.0 ppb
2016-11-0316-1107-12100.0 ppb
2016-11-0316-1107-840.0 ppb
2016-11-0316-1107-11110.0 ppb
2016-12-0716-1209-14330.0 ppb
2016-12-0716-1209-17370.0 ppb
2016-12-0716-1209-16ND
2016-12-0716-1209-19ND
2016-12-0716-1209-15ND
2016-12-0716-1209-18ND
2017-01-1817-0120-670.0 ppb
2017-01-1817-0120-9ND
2017-01-1817-0120-7200.0 ppb
2017-01-1817-0120-8ND
2017-01-1817-0120-4140.0 ppb
2017-01-1817-0120-5ND
2017-02-2017-0222-1660.0 ppb
2017-02-2017-0222-1940.0 ppb
2017-02-2017-0222-15ND
2017-02-2017-0222-1860.0 ppb
2017-02-2017-0222-14160.0 ppb
2017-02-2017-0222-17190.0 ppb
2017-03-0617-0308-3240.0 ppb
2017-03-0617-0308-33180.0 ppb
2017-03-0617-0308-34190.0 ppb
2017-03-0617-0308-35100.0 ppb
2017-03-0617-0308-36130.0 ppb
2017-03-0617-0308-31150.0 ppb
2017-04-1117-0413-2550.0 ppb
2017-04-1117-0413-2650.0 ppb
2017-04-1117-0413-24270.0 ppb
2017-04-1117-0413-23240.0 ppb
2017-04-1117-0413-22ND
2017-04-1117-0413-21310.0 ppb
2017-05-1517-0517-940.0 ppb
2017-05-1517-0517-4260.0 ppb
2017-05-1517-0517-5160.0 ppb
2017-05-1517-0517-6200.0 ppb
2017-05-1517-0517-870.0 ppb
2017-05-1517-0517-7290.0 ppb
2017-06-1417-0616-11230.0 ppb
2017-06-1417-0616-10380.0 ppb
2017-06-1417-0616-9340.0 ppb
2017-06-1417-0616-8240.0 ppb
2017-06-1417-0616-12240.0 ppb
2017-06-1417-0616-7340.0 ppb
2017-07-0517-0717-20280.0 ppb
2017-07-0517-0717-17190.0 ppb
2017-07-0517-0717-21260.0 ppb
2017-07-0517-0717-18220.0 ppb
2017-07-0517-0717-16190.0 ppb
2017-07-0517-0717-19370.0 ppb
2017-08-0217-0804-8ND
2017-08-0217-0804-11210.0 ppb
2017-08-0217-0804-1260.0 ppb
2017-08-0217-0804-9320.0 ppb
2017-08-0217-0804-10270.0 ppb
2017-08-0217-0804-7450.0 ppb
2017-09-1417-0918-6350.0 ppb
2017-09-1417-0918-10330.0 ppb
2017-09-1417-0918-8490.0 ppb
2017-09-1417-0918-7410.0 ppb
2017-09-1417-0918-9450.0 ppb
2017-09-1417-0918-5460.0 ppb
2017-10-0317-1005-21300.0 ppb
2017-10-0317-1005-18200.0 ppb
2017-10-0317-1005-22260.0 ppb
2017-10-0317-1005-20420.0 ppb
2017-10-0317-1005-19300.0 ppb
2017-10-0317-1005-17260.0 ppb
2017-11-0117-1103-2270.0 ppb
2017-11-0117-1103-630.0 ppb
2017-11-0117-1103-3220.0 ppb
2017-11-0117-1103-4310.0 ppb
2017-11-0117-1103-5250.0 ppb
2017-11-0117-1103-1370.0 ppb
2017-12-0517-1207-16490.0 ppb
2017-12-0517-1207-20ND
2017-12-0517-1207-19180.0 ppb
2017-12-0517-1207-15450.0 ppb
2017-12-0517-1207-18560.0 ppb
2017-12-0517-1207-17580.0 ppb
2018-01-0918-0111-19490.0 ppb
2018-01-0918-0111-18370.0 ppb
2018-01-0918-0111-20490.0 ppb
2018-01-0918-0111-1780.0 ppb
2018-01-0918-0111-16620.0 ppb
2018-01-0918-0111-21ND
2018-02-0618-0208-49458.0 ppb
2018-02-0618-0208-52708.0 ppb
2018-02-0618-0208-50ND
2018-02-0618-0208-53ND
2018-02-0618-0208-54ND
2018-02-0618-0208-51143.0 ppb
2018-03-0618-0307-29172.0 ppb
2018-03-0618-0307-32ND
2018-03-0618-0307-31ND
2018-03-0618-0307-28ND
2018-03-0618-0307-30430.0 ppb
2018-03-0618-0307-27550.0 ppb
2018-04-1318-0417-13450.0 ppb
2018-04-1318-0417-16260.0 ppb
2018-04-1318-0417-14ND
2018-04-1318-0417-17120.0 ppb
2018-04-1318-0417-15100.0 ppb
2018-04-1318-0417-18ND
2018-05-0418-0508-23ND
2018-05-0418-0508-18591.0 ppb
2018-05-0481-0508-21258.0 ppb
2018-05-0418-0508-19448.0 ppb
2018-05-0418-0508-2220.0 ppb
2018-05-0418-0508-20647.0 ppb
2018-06-0518-0607-15225.0 ppb
2018-06-0518-0607-18ND
2018-06-0518-0607-1716.0 ppb
2018-06-0518-0607-16ND
2018-06-0518-0607-13310.0 ppb
2018-06-0518-0607-1447.0 ppb
2018-07-1018-0716-5ND
2018-07-1018-0716-6ND
2018-07-1018-0716-4292.0 ppb
2018-07-1018-0716-730.0 ppb
2018-07-1018-0716-828.0 ppb
2018-07-1018-0716-9ND
2018-08-1018-0815-1363.0 ppb
2018-08-1018-0815-10271.0 ppb
2018-08-1018-0815-11ND
2018-08-1018-0815-1448.0 ppb
2018-08-1018-0815-12128.0 ppb
2018-08-1018-0815-1543.0 ppb
2018-09-1018-0912-48ND
2018-09-1018-0912-45108.0 ppb
2018-09-1018-0912-4783.0 ppb
2018-09-1018-0912-4434.0 ppb
2018-09-1018-0912-4681.0 ppb
2018-09-1018-0912-43289.0 ppb
2018-10-0918-1017-19480.0 ppb
2018-10-0918-1017-23211.0 ppb
2018-10-0918-1017-20ND
2018-10-0918-1017-22142.0 ppb
2018-10-0918-1017-24ND
2018-10-0918-1017-21209.0 ppb
2018-11-0518-1107-25270.0 ppb
2018-11-0518-1107-27384.0 ppb
2018-11-0518-1107-24322.0 ppb
2018-11-0518-1107-26475.0 ppb
2018-11-0518-1107-23502.0 ppb
2018-11-0518-1107-28ND
2018-12-0718-1211-6ND
2018-12-0718-1211-816.0 ppb
2018-12-0718-1211-5ND
2018-12-0718-1211-7151.0 ppb
2018-12-0718-1211-4115.0 ppb
2018-12-0718-1211-923.0 ppb
2019-01-154177397ND
2019-01-154177401ND
2019-01-154177396ND
2019-01-154177399160.0 ppb
2019-01-154177398160.0 ppb
2019-01-154177400ND
2019-02-07419413260.0 ppb
2019-02-07419412627.0 ppb
2019-02-074194131ND
2019-02-074194124110.0 ppb
2019-02-074194133320.0 ppb
2019-02-074194125ND
2019-03-074224308130.0 ppb
2019-03-074224332ND
2019-03-07422431076.0 ppb
2019-03-07422433351.0 ppb
2019-03-07422430988.0 ppb
2019-03-074224334260.0 ppb
2019-04-044252713230.0 ppb
2019-04-044252704130.0 ppb
2019-04-04425271270.0 ppb
2019-04-044252706ND
2019-04-044252711ND
2019-04-044252705ND
2019-05-104292696120.0 ppb
2019-05-104292651260.0 ppb
2019-05-104292649ND
2019-05-104292697100.0 ppb
2019-05-10429265040.0 ppb
2019-05-10429269890.0 ppb
2019-06-064320372160.0 ppb
2019-06-064320363320.0 ppb
2019-06-064320361ND
2019-06-06432037496.0 ppb
2019-06-064320362100.0 ppb
2019-06-06432037310.00 ppb
2019-07-15435466746.0 ppb
2019-07-15435465114.0 ppb
2019-07-15435465250.0 ppb
2019-07-154354666ND
2019-07-15435465074.0 ppb
2019-07-154354668150.0 ppb
2019-08-07438029951.0 ppb
2019-08-074380257ND
2019-08-07438030138.0 ppb
2019-08-074380258160.0 ppb
2019-08-07438030011.0 ppb
2019-08-074380259220.0 ppb
2019-09-13442211754.0 ppb
2019-09-13442211898.0 ppb
2019-09-134422116ND
2019-09-24443253747.0 ppb
2019-09-24443253669.0 ppb
2019-09-24443253847.0 ppb
2019-10-07444802235.0 ppb
2019-10-074448018ND
2019-10-07444801971.0 ppb
2019-10-07444802348.0 ppb
2019-10-07444802167.0 ppb
2019-10-07444802071.0 ppb
2019-11-04447996414.0 ppb
2019-11-044479965ND
2019-11-04447996627.0 ppb
2019-11-05448234384.0 ppb
2019-11-05448234247.0 ppb
2019-11-054482341ND
2019-12-06450759556.0 ppb
2019-12-064507592110.0 ppb
2019-12-06450759130.0 ppb
2019-12-06450759054.0 ppb
2019-12-064507593ND
2019-12-064507594ND