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
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | 0.500 ppb | 6 | 1 | ND - 3.00 ppb |
| 2019 | 0.274 ppb | 31 | 2 | ND - 6.40 ppb |
| 2020 | ND | 27 | 0 | ND |
| 2021 | ND | 13 | 0 | ND |
| 2022 | ND | 14 | 0 | ND |
| 2023 | 0.342 ppb | 12 | 2 | ND - 2.10 ppb |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-11-14 | CA3500505_001_001-201811141230 | ND |
| 2018-11-14 | CA3500505_005_005-201811141031 | 3.00 ppb |
| 2018-11-27 | CA3500505_002_002-201811271215 | ND |
| 2018-12-11 | CA3500505_002_002-201812111106 | ND |
| 2018-12-11 | CA3500505_005_005-201812111035 | ND |
| 2018-12-11 | CA3500505_001_001-201812111139 | ND |
| 2019-01-09 | CA3500505_001_001-201901091231 | ND |
| 2019-01-09 | CA3500505_005_005-201901091215 | ND |
| 2019-02-11 | CA3500505_001_001-201902111605 | ND |
| 2019-02-11 | CA3500505_005_005-201902111447 | ND |
| 2019-03-18 | CA3500505_001_001-201903180945 | ND |
| 2019-03-18 | CA3500505_005_005-201903181215 | ND |
| 2019-03-31 | CA3500505_002_002-201903311720 | ND |
| 2019-04-09 | CA3500505_002_002-201904091007 | ND |
| 2019-04-09 | CA3500505_005_005-201904090905 | ND |
| 2019-04-09 | CA3500505_001_001-201904091028 | 6.40 ppb |
| 2019-05-13 | CA3500505_001_001-201905131133 | ND |
| 2019-05-13 | CA3500505_002_002-201905130815 | ND |
| 2019-05-13 | CA3500505_005_005-201905130835 | ND |
| 2019-06-03 | CA3500505_001_001-201906030920 | ND |
| 2019-06-03 | CA3500505_002_002-201906030838 | ND |
| 2019-06-03 | CA3500505_005_005-201906030855 | ND |
| 2019-07-01 | CA3500505_001_001-201907011115 | ND |
| 2019-07-01 | CA3500505_005_005-201907011030 | ND |
| 2019-07-01 | CA3500505_002_002-201907011052 | 2.10 ppb |
| 2019-08-12 | CA3500505_005_005-201908121058 | ND |
| 2019-08-12 | CA3500505_002_002-201908121123 | ND |
| 2019-08-19 | CA3500505_001_001-201908190935 | ND |
| 2019-09-05 | CA3500505_001_001-201909050913 | ND |
| 2019-09-05 | CA3500505_005_005-201909050807 | ND |
| 2019-10-24 | CA3500505_005_005-20191024NUL | ND |
| 2019-10-24 | CA3500505_001_001-201910241135 | ND |
| 2019-11-25 | CA3500505_001_001-201911250850 | ND |
| 2019-11-25 | CA3500505_005_005-201911250831 | ND |
| 2019-12-23 | CA3500505_002_002-201912231035 | ND |
| 2019-12-23 | CA3500505_005_005-201912230940 | ND |
| 2019-12-23 | CA3500505_001_001-201912231110 | ND |
| 2020-01-13 | CA3500505_001_001-202001131149 | ND |
| 2020-01-13 | CA3500505_005_005-202001130952 | ND |
| 2020-01-13 | CA3500505_002_002-202001131121 | ND |
| 2020-02-10 | CA3500505_002_002-202002101214 | ND |
| 2020-02-10 | CA3500505_005_005-202002101130 | ND |
| 2020-02-10 | CA3500505_001_001-202002101235 | ND |
| 2020-03-17 | CA3500505_001_001-202003171152 | ND |
| 2020-03-17 | CA3500505_002_002-202003171047 | ND |
| 2020-03-17 | CA3500505_005_005-202003171015 | ND |
| 2020-04-13 | CA3500505_001_001-202004131426 | ND |
| 2020-04-13 | CA3500505_005_005-202004131326 | ND |
| 2020-04-13 | CA3500505_002_002-202004131358 | ND |
| 2020-05-19 | CA3500505_001_001-202005190915 | ND |
| 2020-05-19 | CA3500505_002_002-202005190820 | ND |
| 2020-05-19 | CA3500505_005_005-202005190745 | ND |
| 2020-06-16 | CA3500505_002_002-202006160913 | ND |
| 2020-06-16 | CA3500505_001_001-202006161040 | ND |
| 2020-06-16 | CA3500505_005_005-202006160940 | ND |
| 2020-07-07 | CA3500505_005_005-202007071002 | ND |
| 2020-07-07 | CA3500505_001_001-202007071019 | ND |
| 2020-09-22 | CA3500505_005_005-202009221219 | ND |
| 2020-09-22 | CA3500505_001_001-202009221301 | ND |
| 2020-10-08 | CA3500505_001_001-202010081235 | ND |
| 2020-10-08 | CA3500505_005_005-202010080820 | ND |
| 2020-11-24 | CA3500505_001_001-202011241211 | ND |
| 2020-11-24 | CA3500505_005_005-202011241142 | ND |
| 2020-12-22 | CA3500505_005_005-202012220829 | ND |
| 2021-01-26 | CA3500505_005_005-202101261230 | ND |
| 2021-02-16 | CA3500505_005_005-202102161137 | ND |
| 2021-02-16 | CA3500505_001_001-202102161117 | ND |
| 2021-03-15 | CA3500505_005_005-202103151209 | ND |
| 2021-03-29 | CA3500505_001_001-202103290656 | ND |
| 2021-04-19 | CA3500505_005_005-202104191219 | ND |
| 2021-04-19 | CA3500505_001_001-202104190847 | ND |
| 2021-09-14 | CA3500505_005_005-202109141225 | ND |
| 2021-09-14 | CA3500505_001_001-202109141242 | ND |
| 2021-11-30 | CA3500505_001_001-202111301221 | ND |
| 2021-11-30 | CA3500505_005_005-202111301201 | ND |
| 2021-12-28 | CA3500505_005_005-202112281454 | ND |
| 2021-12-28 | CA3500505_001_001-202112281247 | ND |
| 2022-02-24 | CA3500505_005_005-202202240855 | ND |
| 2022-02-24 | CA3500505_001_001-202202240918 | ND |
| 2022-03-14 | CA3500505_001_001-202203141059 | ND |
| 2022-03-14 | CA3500505_005_005-202203141051 | ND |
| 2022-04-20 | CA3500505_005_005-202204200740 | ND |
| 2022-05-31 | CA3500505_005_005-202205311011 | ND |
| 2022-05-31 | CA3500505_001_001-202205311020 | ND |
| 2022-06-27 | CA3500505_005_005-202206270845 | ND |
| 2022-08-22 | CA3500505_001_001-202208221030 | ND |
| 2022-08-22 | CA3500505_005_005-202208220858 | ND |
| 2022-09-26 | CA3500505_001_001-202209261152 | ND |
| 2022-09-26 | CA3500505_005_005-202209261105 | ND |
| 2022-10-12 | CA3500505_005_005-202210121231 | ND |
| 2022-10-12 | CA3500505_001_001-202210121231 | ND |
| 2023-02-15 | CA3500505_005_005-202302151232 | ND |
| 2023-04-26 | CA3500505_005_005-202304260950 | ND |
| 2023-05-17 | CA3500505_005_005-202305170950 | ND |
| 2023-07-25 | CA3500505_001_001-202307251325 | 2.10 ppb |
| 2023-07-25 | CA3500505_005_005-202307251300 | 2.00 ppb |
| 2023-08-22 | CA3500505_005_005-202308221018 | ND |
| 2023-08-22 | CA3500505_001_001-202308221041 | ND |
| 2023-09-25 | CA3500505_001_001-202309251302 | ND |
| 2023-10-23 | CA3500505_005_005-202310230713 | ND |
| 2023-10-23 | CA3500505_001_001-202310230723 | ND |
| 2023-12-27 | CA3500505_005_005-202312271156 | ND |
| 2023-12-27 | CA3500505_001_001-202312271051 | ND |