Know Your Environment. Protect Your Health.

Formaldehyde

Thousand Trails San Benito Preserve

Formaldehyde is found in particle board, plastics, textiles, glues and other consumer products. Formaldehyde in drinking water can form as a byproduct of ozonation. Formaldehyde irritates the eyes, nose, throat and skin; long-term exposure can cause cancer.

 

103

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.500 ppb61ND - 3.00 ppb
20190.274 ppb312ND - 6.40 ppb
2020ND270ND
2021ND130ND
2022ND140ND
20230.342 ppb122ND - 2.10 ppb

ppb = parts per billion

All test results

Date Lab ID Result
2018-11-14CA3500505_001_001-201811141230ND
2018-11-14CA3500505_005_005-2018111410313.00 ppb
2018-11-27CA3500505_002_002-201811271215ND
2018-12-11CA3500505_002_002-201812111106ND
2018-12-11CA3500505_005_005-201812111035ND
2018-12-11CA3500505_001_001-201812111139ND
2019-01-09CA3500505_001_001-201901091231ND
2019-01-09CA3500505_005_005-201901091215ND
2019-02-11CA3500505_001_001-201902111605ND
2019-02-11CA3500505_005_005-201902111447ND
2019-03-18CA3500505_001_001-201903180945ND
2019-03-18CA3500505_005_005-201903181215ND
2019-03-31CA3500505_002_002-201903311720ND
2019-04-09CA3500505_002_002-201904091007ND
2019-04-09CA3500505_005_005-201904090905ND
2019-04-09CA3500505_001_001-2019040910286.40 ppb
2019-05-13CA3500505_001_001-201905131133ND
2019-05-13CA3500505_002_002-201905130815ND
2019-05-13CA3500505_005_005-201905130835ND
2019-06-03CA3500505_001_001-201906030920ND
2019-06-03CA3500505_002_002-201906030838ND
2019-06-03CA3500505_005_005-201906030855ND
2019-07-01CA3500505_001_001-201907011115ND
2019-07-01CA3500505_005_005-201907011030ND
2019-07-01CA3500505_002_002-2019070110522.10 ppb
2019-08-12CA3500505_005_005-201908121058ND
2019-08-12CA3500505_002_002-201908121123ND
2019-08-19CA3500505_001_001-201908190935ND
2019-09-05CA3500505_001_001-201909050913ND
2019-09-05CA3500505_005_005-201909050807ND
2019-10-24CA3500505_005_005-20191024NULND
2019-10-24CA3500505_001_001-201910241135ND
2019-11-25CA3500505_001_001-201911250850ND
2019-11-25CA3500505_005_005-201911250831ND
2019-12-23CA3500505_002_002-201912231035ND
2019-12-23CA3500505_005_005-201912230940ND
2019-12-23CA3500505_001_001-201912231110ND
2020-01-13CA3500505_001_001-202001131149ND
2020-01-13CA3500505_005_005-202001130952ND
2020-01-13CA3500505_002_002-202001131121ND
2020-02-10CA3500505_002_002-202002101214ND
2020-02-10CA3500505_005_005-202002101130ND
2020-02-10CA3500505_001_001-202002101235ND
2020-03-17CA3500505_001_001-202003171152ND
2020-03-17CA3500505_002_002-202003171047ND
2020-03-17CA3500505_005_005-202003171015ND
2020-04-13CA3500505_001_001-202004131426ND
2020-04-13CA3500505_005_005-202004131326ND
2020-04-13CA3500505_002_002-202004131358ND
2020-05-19CA3500505_001_001-202005190915ND
2020-05-19CA3500505_002_002-202005190820ND
2020-05-19CA3500505_005_005-202005190745ND
2020-06-16CA3500505_002_002-202006160913ND
2020-06-16CA3500505_001_001-202006161040ND
2020-06-16CA3500505_005_005-202006160940ND
2020-07-07CA3500505_005_005-202007071002ND
2020-07-07CA3500505_001_001-202007071019ND
2020-09-22CA3500505_005_005-202009221219ND
2020-09-22CA3500505_001_001-202009221301ND
2020-10-08CA3500505_001_001-202010081235ND
2020-10-08CA3500505_005_005-202010080820ND
2020-11-24CA3500505_001_001-202011241211ND
2020-11-24CA3500505_005_005-202011241142ND
2020-12-22CA3500505_005_005-202012220829ND
2021-01-26CA3500505_005_005-202101261230ND
2021-02-16CA3500505_005_005-202102161137ND
2021-02-16CA3500505_001_001-202102161117ND
2021-03-15CA3500505_005_005-202103151209ND
2021-03-29CA3500505_001_001-202103290656ND
2021-04-19CA3500505_005_005-202104191219ND
2021-04-19CA3500505_001_001-202104190847ND
2021-09-14CA3500505_005_005-202109141225ND
2021-09-14CA3500505_001_001-202109141242ND
2021-11-30CA3500505_001_001-202111301221ND
2021-11-30CA3500505_005_005-202111301201ND
2021-12-28CA3500505_005_005-202112281454ND
2021-12-28CA3500505_001_001-202112281247ND
2022-02-24CA3500505_005_005-202202240855ND
2022-02-24CA3500505_001_001-202202240918ND
2022-03-14CA3500505_001_001-202203141059ND
2022-03-14CA3500505_005_005-202203141051ND
2022-04-20CA3500505_005_005-202204200740ND
2022-05-31CA3500505_005_005-202205311011ND
2022-05-31CA3500505_001_001-202205311020ND
2022-06-27CA3500505_005_005-202206270845ND
2022-08-22CA3500505_001_001-202208221030ND
2022-08-22CA3500505_005_005-202208220858ND
2022-09-26CA3500505_001_001-202209261152ND
2022-09-26CA3500505_005_005-202209261105ND
2022-10-12CA3500505_005_005-202210121231ND
2022-10-12CA3500505_001_001-202210121231ND
2023-02-15CA3500505_005_005-202302151232ND
2023-04-26CA3500505_005_005-202304260950ND
2023-05-17CA3500505_005_005-202305170950ND
2023-07-25CA3500505_001_001-2023072513252.10 ppb
2023-07-25CA3500505_005_005-2023072513002.00 ppb
2023-08-22CA3500505_005_005-202308221018ND
2023-08-22CA3500505_001_001-202308221041ND
2023-09-25CA3500505_001_001-202309251302ND
2023-10-23CA3500505_005_005-202310230713ND
2023-10-23CA3500505_001_001-202310230723ND
2023-12-27CA3500505_005_005-202312271156ND
2023-12-27CA3500505_001_001-202312271051ND