Know Your Environment. Protect Your Health.

Perchlorate

Fairview Water Company LLC

Perchlorate, a component of rocket fuel, occurs both naturally and as a synthetic chemical. Ingested perchlorate interferes with thyroid function. Exposure to perchlorate during pregnancy and childhood can impair cognitive development. Read More.

According to the EPA, perchlorate likely contaminates the water of more than 16 million Americans. Perchlorate interferes with iodine uptake in the thyroid, which can result in reduced thyroid hormones and an impact on metabolism, physical development and cognitive development. Children and developing fetuses are the most at risk from perchlorate contamination.

Perchlorate is the only unregulated contaminant for which the EPA has attempted to set a federal drinking water standard since 1996. However, the agency has yet to propose a draft limit for this contaminant. Perchlorate in drinking water is regulated in Arizona, California, Massachusetts, New Jersey, New York and Texas. California set a public health goal of 1 part per billion for perchlorate in 2015.

Click here to read more about perchlorate.

 

66

Samples

0

Samples exceeding legal limit (MCL)

29

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.08 ppb112ND - 7.80 ppb
2019ND120ND
20201.48 ppb124ND - 4.80 ppb
20211.63 ppb105ND - 4.80 ppb
20223.68 ppb12122.20 ppb - 13.0 ppb
20232.00 ppb96ND - 3.40 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 1 ppb

The EWG Health Guideline of 1 ppb for perchlorate 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 hormone disruption.

ppb = parts per billion

All test results

Date Lab ID Result
2018-02-20CA1502670_003_003-201802200950ND
2018-03-27CA1502670_003_003-201803271345ND
2018-04-16CA1502670_003_003-201804160915ND
2018-05-30CA1502670_003_003-201805301050ND
2018-06-18CA1502670_003_003-201806181030ND
2018-07-19CA1502670_003_003-201807191145ND
2018-08-23CA1502670_003_003-201808230840ND
2018-09-11CA1502670_003_003-201809111230ND
2018-10-11CA1502670_003_003-2018101107454.10 ppb
2018-11-28CA1502670_003_003-2018112809007.80 ppb
2018-12-26CA1502670_003_003-201812260959ND
2019-01-09CA1502670_003_003-201901091130ND
2019-02-27CA1502670_003_003-201902271200ND
2019-03-28CA1502670_003_003-201903281000ND
2019-04-25CA1502670_003_003-201904251345ND
2019-05-13CA1502670_003_003-201905131530ND
2019-06-19CA1502670_003_003-201906190945ND
2019-07-31CA1502670_003_003-201907311015ND
2019-08-22CA1502670_003_003-201908221005ND
2019-09-26CA1502670_003_003-201909261430ND
2019-10-16CA1502670_003_003-201910161105ND
2019-11-13CA1502670_003_003-201911130953ND
2019-12-11CA1502670_003_003-201912111030ND
2020-01-09CA1502670_003_003-202001090915ND
2020-02-26CA1502670_003_003-202002261340ND
2020-03-12CA1502670_003_003-2020031211304.80 ppb
2020-04-22CA1502670_003_003-2020042210434.70 ppb
2020-05-07CA1502670_003_003-2020050709274.00 ppb
2020-06-10CA1502670_003_003-202006101030ND
2020-07-22CA1502670_003_003-2020072211004.30 ppb
2020-08-24CA1502670_003_003-202008241330ND
2020-09-24CA1502670_003_003-202009241450ND
2020-10-31CA1502670_003_003-202010311845ND
2020-11-29CA1502670_003_003-202011291231ND
2020-12-21CA1502670_003_003-202012211500ND
2021-01-21CA1502670_003_003-202101211230ND
2021-02-25CA1502670_003_003-202102251650ND
2021-03-29CA1502670_003_003-202103290930ND
2021-04-29CA1502670_003_003-202104290600ND
2021-05-27CA1502670_003_003-202105271340ND
2021-06-30CA1502670_003_003-2021063009303.00 ppb
2021-08-26CA1502670_003_003-2021082615054.80 ppb
2021-09-30CA1502670_003_003-2021093013152.00 ppb
2021-10-28CA1502670_003_003-2021102816302.40 ppb
2021-11-28CA1502670_003_003-2021112804004.10 ppb
2022-02-28CA1502670_003_003-2022022809454.80 ppb
2022-03-31CA1502670_003_003-2022033114453.20 ppb
2022-04-30CA1502670_003_003-2022043005452.40 ppb
2022-05-26CA1502670_003_003-2022052612152.60 ppb
2022-06-23CA1502670_003_003-20220623120013.0 ppb
2022-07-06CA1502670_003_003-2022070615302.30 ppb
2022-07-13CA1502670_003_003-2022071315052.30 ppb
2022-08-30CA1502670_003_003-2022083013502.20 ppb
2022-09-29CA1502670_003_003-2022092914102.50 ppb
2022-10-26CA1502670_003_003-2022102617002.50 ppb
2022-11-30CA1502670_003_003-2022113009103.10 ppb
2022-12-07CA1502670_003_003-2022120714403.30 ppb
2023-01-31CA1502670_003_003-202301311430ND
2023-04-30CA1502670_003_003-202304301630ND
2023-06-30CA1502670_003_003-202306301730ND
2023-07-31CA1502670_003_003-2023073101103.30 ppb
2023-08-28CA1502670_003_003-2023082811302.40 ppb
2023-09-24CA1502670_003_003-2023092412453.40 ppb
2023-10-31CA1502670_003_003-2023103113103.00 ppb
2023-11-29CA1502670_003_003-2023112916102.90 ppb
2023-12-19CA1502670_003_003-2023121912553.00 ppb