Chlorite
City of Rio Grande City
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.
339
Samples
0
Samples exceeding legal limit (MCL)
259
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 278.9 ppb | 72 | 70 | ND - 490.0 ppb |
| 2015 | 293.5 ppb | 42 | 38 | ND - 800.0 ppb |
| 2016 | 146.8 ppb | 69 | 62 | ND - 520.0 ppb |
| 2017 | 152.3 ppb | 72 | 71 | ND - 800.0 ppb |
| 2018 | 99.9 ppb | 48 | 47 | ND - 340.0 ppb |
| 2019 | 36.3 ppb | 36 | 12 | ND - 260.0 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 |
|---|---|---|
| 2014-01-08 | 2954916 | 170.0 ppb |
| 2014-01-08 | 2954915 | 160.0 ppb |
| 2014-01-08 | 2954914 | 200.0 ppb |
| 2014-01-09 | 14-0110-5 | 150.0 ppb |
| 2014-01-09 | 14-0110-6 | ND |
| 2014-01-09 | 14-0110-4 | 70.0 ppb |
| 2014-02-05 | 14-0206-24 | 210.0 ppb |
| 2014-02-05 | 14-0206-26 | 340.0 ppb |
| 2014-02-05 | 14-0206-25 | 120.0 ppb |
| 2014-02-10 | 2971007 | 190.0 ppb |
| 2014-02-10 | 2971008 | 480.0 ppb |
| 2014-02-10 | 2971009 | 480.0 ppb |
| 2014-03-05 | 2986011 | 340.0 ppb |
| 2014-03-05 | 2986010 | 170.0 ppb |
| 2014-03-05 | 2986009 | 200.0 ppb |
| 2014-03-11 | 14-0312-30 | 430.0 ppb |
| 2014-03-11 | 14-0312-32 | 460.0 ppb |
| 2014-03-11 | 14-0312-31 | 450.0 ppb |
| 2014-04-09 | 3005424 | 390.0 ppb |
| 2014-04-09 | 3005423 | 32.0 ppb |
| 2014-04-09 | 3005425 | 390.0 ppb |
| 2014-04-14 | 14-0415-9 | 250.0 ppb |
| 2014-04-14 | 14-0415-8 | 230.0 ppb |
| 2014-04-14 | 14-0415-7 | 320.0 ppb |
| 2014-05-13 | 3025241 | 430.0 ppb |
| 2014-05-13 | 3025240 | 200.0 ppb |
| 2014-05-13 | 3025242 | 340.0 ppb |
| 2014-05-14 | 14-0515-18 | 260.0 ppb |
| 2014-05-14 | 14-0515-20 | 300.0 ppb |
| 2014-05-14 | 14-0515-19 | 360.0 ppb |
| 2014-06-16 | 3043311 | 250.0 ppb |
| 2014-06-16 | 3043313 | 280.0 ppb |
| 2014-06-16 | 3043312 | 280.0 ppb |
| 2014-06-18 | 14-0619-9 | 260.0 ppb |
| 2014-06-18 | 14-0619-7 | 240.0 ppb |
| 2014-06-18 | 14-0619-8 | 220.0 ppb |
| 2014-07-08 | 14-0709-1 | 80.0 ppb |
| 2014-07-08 | 14-0709-2 | 190.0 ppb |
| 2014-07-08 | 14-0709-3 | 230.0 ppb |
| 2014-07-16 | 3064383 | 280.0 ppb |
| 2014-07-16 | 3064382 | 300.0 ppb |
| 2014-07-16 | 3064381 | 270.0 ppb |
| 2014-08-06 | 14-0807-2 | 310.0 ppb |
| 2014-08-06 | 3076455 | 450.0 ppb |
| 2014-08-06 | 3076454 | 380.0 ppb |
| 2014-08-06 | 3076456 | 490.0 ppb |
| 2014-08-06 | 14-0807-3 | 370.0 ppb |
| 2014-08-06 | 14-0807-1 | 190.0 ppb |
| 2014-09-09 | 14-0910-21 | 180.0 ppb |
| 2014-09-09 | 14-0910-20 | 220.0 ppb |
| 2014-09-09 | 14-0910-19 | ND |
| 2014-09-10 | 3100820 | 250.0 ppb |
| 2014-09-10 | 3100819 | 270.0 ppb |
| 2014-09-10 | 3100821 | 250.0 ppb |
| 2014-10-07 | 14-1008-32 | 310.0 ppb |
| 2014-10-07 | 14-1008-30 | 220.0 ppb |
| 2014-10-07 | 14-1008-31 | 270.0 ppb |
| 2014-10-08 | 3119450 | 410.0 ppb |
| 2014-10-08 | 3119451 | 260.0 ppb |
| 2014-10-08 | 3119449 | 370.0 ppb |
| 2014-11-05 | 3133971 | 310.0 ppb |
| 2014-11-05 | 3133970 | 310.0 ppb |
| 2014-11-05 | 3133972 | 310.0 ppb |
| 2014-11-12 | 14-1113-34 | 250.0 ppb |
| 2014-11-12 | 14-1113-35 | 310.0 ppb |
| 2014-11-12 | 14-1113-36 | 300.0 ppb |
| 2014-12-09 | 14-1210-7 | 260.0 ppb |
| 2014-12-09 | 14-1210-8 | 360.0 ppb |
| 2014-12-09 | 14-1210-9 | 370.0 ppb |
| 2014-12-10 | 3153200 | 350.0 ppb |
| 2014-12-10 | 3153202 | 380.0 ppb |
| 2014-12-10 | 3153201 | 370.0 ppb |
| 2015-01-06 | 15-0108-20 | ND |
| 2015-01-06 | 15-0108-19 | 190.0 ppb |
| 2015-01-06 | 15-0108-18 | 110.0 ppb |
| 2015-02-04 | 15-0205-28 | 540.0 ppb |
| 2015-02-04 | 15-0205-29 | 440.0 ppb |
| 2015-02-04 | 15-0205-30 | 410.0 ppb |
| 2015-03-03 | 15-0304-4 | ND |
| 2015-03-03 | 15-0304-5 | 460.0 ppb |
| 2015-03-03 | 15-0304-6 | 440.0 ppb |
| 2015-04-08 | 15-0409-13 | 290.0 ppb |
| 2015-04-08 | 15-0409-14 | 320.0 ppb |
| 2015-04-08 | 15-0409-15 | 300.0 ppb |
| 2015-05-12 | 15-0513-16 | 260.0 ppb |
| 2015-05-12 | 15-0513-17 | 280.0 ppb |
| 2015-05-12 | 15-0513-18 | 180.0 ppb |
| 2015-06-08 | 15-0609-33 | 380.0 ppb |
| 2015-06-08 | 15-0609-34 | 320.0 ppb |
| 2015-06-08 | 15-0609-35 | 180.0 ppb |
| 2015-07-07 | 15-0708-37 | 400.0 ppb |
| 2015-07-07 | 15-0708-38 | 290.0 ppb |
| 2015-07-07 | 15-0708-39 | 230.0 ppb |
| 2015-08-12 | 15-0813-17 | 410.0 ppb |
| 2015-08-12 | 15-0813-16 | 270.0 ppb |
| 2015-08-12 | 15-0813-18 | 420.0 ppb |
| 2015-09-16 | 15-0917-41 | 270.0 ppb |
| 2015-09-16 | 15-0917-40 | 800.0 ppb |
| 2015-09-16 | 15-0917-42 | 270.0 ppb |
| 2015-10-13 | 15-1014-33 | 270.0 ppb |
| 2015-10-13 | 15-1014-34 | 210.0 ppb |
| 2015-10-13 | 15-1014-35 | 120.0 ppb |
| 2015-11-10 | 15-1110-11 | 370.0 ppb |
| 2015-11-10 | 15-1110-10 | 360.0 ppb |
| 2015-11-10 | 15-1110-12 | ND |
| 2015-11-17 | 3360577 | 360.0 ppb |
| 2015-11-17 | 3360576 | ND |
| 2015-11-17 | 3360578 | 370.0 ppb |
| 2015-12-02 | 15-1203-37 | 350.0 ppb |
| 2015-12-02 | 15-1203-36 | 420.0 ppb |
| 2015-12-02 | 3367454 | 460.0 ppb |
| 2015-12-02 | 3397455 | 450.0 ppb |
| 2015-12-02 | 15-1203-38 | 100.0 ppb |
| 2015-12-02 | 3367453 | 29.0 ppb |
| 2016-01-06 | 3382602 | ND |
| 2016-01-06 | 3382604 | 510.0 ppb |
| 2016-01-06 | 3382603 | 510.0 ppb |
| 2016-01-12 | 16-0113-24 | 180.0 ppb |
| 2016-01-12 | 16-0113-23 | 340.0 ppb |
| 2016-01-12 | 16-0113-22 | 520.0 ppb |
| 2016-02-03 | 3395663 | 240.0 ppb |
| 2016-02-03 | 3395664 | 230.0 ppb |
| 2016-02-03 | 3395662 | 13.0 ppb |
| 2016-02-09 | 16-0210-37 | 250.0 ppb |
| 2016-02-09 | 16-0210-38 | 80.0 ppb |
| 2016-02-09 | 16-0210-36 | 220.0 ppb |
| 2016-03-02 | 3409009 | 190.0 ppb |
| 2016-03-02 | 3409008 | 200.0 ppb |
| 2016-03-02 | 3409007 | ND |
| 2016-03-09 | 16-0310-11 | 220.0 ppb |
| 2016-03-09 | 16-0310-10 | 230.0 ppb |
| 2016-03-09 | 16-0310-12 | 260.0 ppb |
| 2016-04-06 | 3426322 | 190.0 ppb |
| 2016-04-06 | 3426321 | 68.0 ppb |
| 2016-04-06 | 3426323 | 180.0 ppb |
| 2016-04-11 | 16-0412-11 | 130.0 ppb |
| 2016-04-11 | 16-0412-10 | 130.0 ppb |
| 2016-04-11 | 16-0412-9 | 180.0 ppb |
| 2016-05-17 | 3452549 | 55.0 ppb |
| 2016-05-17 | 3452548 | 110.0 ppb |
| 2016-05-17 | 3452547 | 33.0 ppb |
| 2016-05-17 | 16-0518-9 | 120.0 ppb |
| 2016-05-17 | 16-0518-8 | 160.0 ppb |
| 2016-05-17 | 16-0518-7 | 140.0 ppb |
| 2016-06-07 | 3467410 | 200.0 ppb |
| 2016-06-07 | 3467409 | ND |
| 2016-06-07 | 3467411 | 200.0 ppb |
| 2016-06-14 | 16-0622-67 | 200.0 ppb |
| 2016-06-14 | 16-0622-69 | 130.0 ppb |
| 2016-06-14 | 16-0622-68 | 130.0 ppb |
| 2016-07-12 | 3492827 | 250.0 ppb |
| 2016-07-12 | 3492826 | 240.0 ppb |
| 2016-07-12 | 3492828 | 270.0 ppb |
| 2016-08-09 | 3518602 | 60.0 ppb |
| 2016-08-09 | 3518603 | 44.0 ppb |
| 2016-08-09 | 3518601 | ND |
| 2016-08-23 | 3531241 | 270.0 ppb |
| 2016-08-23 | 3531242 | 100.0 ppb |
| 2016-08-23 | 3531243 | 51.0 ppb |
| 2016-09-06 | 3541348 | 79.0 ppb |
| 2016-09-06 | 3541346 | 80.0 ppb |
| 2016-09-06 | 3541347 | 60.0 ppb |
| 2016-09-21 | 3550745 | ND |
| 2016-09-21 | 3550747 | 230.0 ppb |
| 2016-09-21 | 3550746 | 77.0 ppb |
| 2016-10-04 | 3559984 | 46.0 ppb |
| 2016-10-04 | 3559985 | 20.0 ppb |
| 2016-10-04 | 3559983 | 94.0 ppb |
| 2016-10-12 | 3564094 | ND |
| 2016-10-12 | 3564096 | 160.0 ppb |
| 2016-10-12 | 3564095 | 90.0 ppb |
| 2016-11-02 | 3578218 | 68.0 ppb |
| 2016-11-02 | 3578217 | 46.0 ppb |
| 2016-11-02 | 3578219 | 270.0 ppb |
| 2016-11-08 | 3583549 | 56.0 ppb |
| 2016-11-08 | 3583550 | 50.0 ppb |
| 2016-11-08 | 3583551 | 210.0 ppb |
| 2016-12-07 | 3600713 | 27.0 ppb |
| 2016-12-07 | 3600714 | ND |
| 2016-12-07 | 3600715 | 260.0 ppb |
| 2016-12-14 | 3605584 | 120.0 ppb |
| 2016-12-14 | 3605585 | 130.0 ppb |
| 2016-12-14 | 3605586 | 120.0 ppb |
| 2017-01-04 | 3615935 | 92.0 ppb |
| 2017-01-04 | 3615937 | 220.0 ppb |
| 2017-01-04 | 3615936 | 120.0 ppb |
| 2017-01-11 | 3620843 | 210.0 ppb |
| 2017-01-11 | 3620844 | 92.0 ppb |
| 2017-01-11 | 3620842 | 110.0 ppb |
| 2017-02-01 | 3630951 | 180.0 ppb |
| 2017-02-01 | 3630950 | 200.0 ppb |
| 2017-02-01 | 3630952 | 120.0 ppb |
| 2017-02-07 | 3635307 | 230.0 ppb |
| 2017-02-07 | 3635306 | 230.0 ppb |
| 2017-02-07 | 3635305 | 62.0 ppb |
| 2017-03-01 | 3647408 | 170.0 ppb |
| 2017-03-01 | 3647409 | 180.0 ppb |
| 2017-03-01 | 3647410 | 210.0 ppb |
| 2017-03-15 | 3655258 | 79.0 ppb |
| 2017-03-15 | 3655256 | 54.0 ppb |
| 2017-03-15 | 3655257 | 59.0 ppb |
| 2017-04-04 | 3668547 | 80.0 ppb |
| 2017-04-04 | 3668549 | 190.0 ppb |
| 2017-04-04 | 3668548 | 65.0 ppb |
| 2017-04-19 | 3678437 | 110.0 ppb |
| 2017-04-19 | 3678438 | 140.0 ppb |
| 2017-04-19 | 3678439 | 140.0 ppb |
| 2017-05-02 | 3687661 | 150.0 ppb |
| 2017-05-02 | 3687662 | 120.0 ppb |
| 2017-05-02 | 3677663 | 49.0 ppb |
| 2017-05-09 | 3692309 | ND |
| 2017-05-09 | 3692310 | 100.0 ppb |
| 2017-05-09 | 3692311 | 130.0 ppb |
| 2017-06-06 | 3708858 | 140.0 ppb |
| 2017-06-06 | 3708856 | 120.0 ppb |
| 2017-06-06 | 3708857 | 74.0 ppb |
| 2017-06-20 | 3719088 | 350.0 ppb |
| 2017-06-20 | 3719086 | 280.0 ppb |
| 2017-06-20 | 3719087 | 380.0 ppb |
| 2017-07-05 | 3726678 | 210.0 ppb |
| 2017-07-05 | 3726677 | 100.0 ppb |
| 2017-07-05 | 3726679 | 150.0 ppb |
| 2017-07-12 | 3731833 | 340.0 ppb |
| 2017-07-12 | 3731832 | 310.0 ppb |
| 2017-07-12 | 3731834 | 62.0 ppb |
| 2017-08-03 | 3747064 | 42.0 ppb |
| 2017-08-03 | 3747063 | 51.0 ppb |
| 2017-08-03 | 3747062 | 120.0 ppb |
| 2017-08-09 | 3753115 | 740.0 ppb |
| 2017-08-09 | 3753116 | 180.0 ppb |
| 2017-08-09 | 3753117 | 800.0 ppb |
| 2017-09-05 | 3773321 | 240.0 ppb |
| 2017-09-05 | 3773323 | 130.0 ppb |
| 2017-09-05 | 3773322 | 130.0 ppb |
| 2017-09-12 | 3778143 | 21.0 ppb |
| 2017-09-12 | 3778144 | 56.0 ppb |
| 2017-09-12 | 3778142 | 33.0 ppb |
| 2017-10-10 | 3797957 | 57.0 ppb |
| 2017-10-10 | 3797956 | 36.0 ppb |
| 2017-10-10 | 3797955 | 99.0 ppb |
| 2017-10-17 | 3802582 | 46.0 ppb |
| 2017-10-17 | 3802583 | 88.0 ppb |
| 2017-10-17 | 3802584 | 190.0 ppb |
| 2017-11-07 | 3817784 | 57.0 ppb |
| 2017-11-07 | 3817785 | 33.0 ppb |
| 2017-11-07 | 3817786 | 290.0 ppb |
| 2017-11-14 | 3822076 | 190.0 ppb |
| 2017-11-14 | 3822077 | 76.0 ppb |
| 2017-11-14 | 3822078 | 240.0 ppb |
| 2017-12-06 | 3834820 | 160.0 ppb |
| 2017-12-06 | 3834821 | 53.0 ppb |
| 2017-12-06 | 3834822 | 130.0 ppb |
| 2017-12-12 | 3838193 | 110.0 ppb |
| 2017-12-12 | 3838195 | 110.0 ppb |
| 2017-12-12 | 3838194 | 51.0 ppb |
| 2018-01-02 | 3847247 | 120.0 ppb |
| 2018-01-02 | 3847245 | 300.0 ppb |
| 2018-01-02 | 3847246 | 230.0 ppb |
| 2018-01-09 | 3850932 | 42.0 ppb |
| 2018-01-09 | 3850931 | 28.0 ppb |
| 2018-01-09 | 3850933 | 340.0 ppb |
| 2018-02-07 | 3868213 | 160.0 ppb |
| 2018-02-07 | 3868214 | 180.0 ppb |
| 2018-02-07 | 3868212 | 86.0 ppb |
| 2018-03-07 | 3886050 | 160.0 ppb |
| 2018-03-07 | 3886051 | 130.0 ppb |
| 2018-03-07 | 3886049 | 160.0 ppb |
| 2018-04-04 | 3904511 | 96.0 ppb |
| 2018-04-04 | 3904510 | 150.0 ppb |
| 2018-04-04 | 3904512 | 220.0 ppb |
| 2018-05-08 | 3932957 | 19.0 ppb |
| 2018-05-08 | 3932958 | 40.0 ppb |
| 2018-05-08 | 3932959 | 20.0 ppb |
| 2018-06-12 | 3961359 | 21.0 ppb |
| 2018-06-12 | 3961357 | 32.0 ppb |
| 2018-06-12 | 3961358 | 30.0 ppb |
| 2018-06-19 | 3969712 | 26.0 ppb |
| 2018-06-19 | 3696713 | 20.0 ppb |
| 2018-06-19 | 3969714 | 27.0 ppb |
| 2018-07-10 | 3986534 | 210.0 ppb |
| 2018-07-10 | 3986533 | 110.0 ppb |
| 2018-07-10 | 3986532 | 200.0 ppb |
| 2018-07-16 | 3994931 | 22.0 ppb |
| 2018-07-16 | 3994930 | 36.0 ppb |
| 2018-07-16 | 3994932 | 31.0 ppb |
| 2018-08-07 | 4016126 | 23.0 ppb |
| 2018-08-07 | 4016127 | 86.0 ppb |
| 2018-08-07 | 4016125 | 93.0 ppb |
| 2018-08-14 | 4025721 | 110.0 ppb |
| 2018-08-14 | 4025720 | 26.0 ppb |
| 2018-08-14 | 4025722 | 110.0 ppb |
| 2018-09-04 | 4046790 | 70.0 ppb |
| 2018-09-04 | 4046789 | 43.0 ppb |
| 2018-09-04 | 4046791 | 140.0 ppb |
| 2018-10-02 | 4077625 | 22.0 ppb |
| 2018-10-02 | 4077623 | 75.0 ppb |
| 2018-10-02 | 4077624 | 96.0 ppb |
| 2018-11-06 | 4115588 | ND |
| 2018-11-06 | 4115586 | 20.0 ppb |
| 2018-11-06 | 4115587 | 27.0 ppb |
| 2018-12-04 | 4141436 | 290.0 ppb |
| 2018-12-04 | 4141437 | 110.0 ppb |
| 2018-12-04 | 4141435 | 210.0 ppb |
| 2019-01-09 | 4169178 | 200.0 ppb |
| 2019-01-09 | 4169179 | 170.0 ppb |
| 2019-01-09 | 4169180 | 260.0 ppb |
| 2019-02-12 | 4196825 | 100.0 ppb |
| 2019-02-12 | 4196826 | 160.0 ppb |
| 2019-02-12 | 4196827 | 84.0 ppb |
| 2019-03-28 | 1770651 | 18.3 ppb |
| 2019-03-28 | 1770649 | 70.9 ppb |
| 2019-03-28 | 1770650 | 25.1 ppb |
| 2019-04-09 | 1773980 | ND |
| 2019-04-09 | 1773979 | ND |
| 2019-04-09 | 1773978 | ND |
| 2019-05-07 | 1781841 | ND |
| 2019-05-07 | 1781842 | ND |
| 2019-05-07 | 1781843 | ND |
| 2019-06-04 | 1789279 | ND |
| 2019-06-04 | 1789278 | ND |
| 2019-06-04 | 1789277 | ND |
| 2019-07-02 | 1806720 | ND |
| 2019-07-02 | 1806719 | ND |
| 2019-07-02 | 1806721 | ND |
| 2019-08-06 | 1813770 | 20.6 ppb |
| 2019-08-06 | 1813769 | ND |
| 2019-08-06 | 1813768 | ND |
| 2019-09-03 | 1815693 | ND |
| 2019-09-03 | 1815695 | 49.7 ppb |
| 2019-09-03 | 1815694 | ND |
| 2019-10-01 | 1825136 | ND |
| 2019-10-01 | 1825135 | ND |
| 2019-10-01 | 1825134 | ND |
| 2019-11-05 | 1835352 | ND |
| 2019-11-05 | 1835353 | ND |
| 2019-11-05 | 1835354 | 148.0 ppb |
| 2019-12-10 | 1846715 | ND |
| 2019-12-10 | 1846713 | ND |
| 2019-12-10 | 1846714 | ND |