1,4-Dioxane
Bayleaf Master
1,4-Dioxane is a solvent classified by the EPA as a likely human carcinogen. It contaminates groundwater in many states due to industrial wastewater discharges, plastic manufacturing runoff and landfill runoff. Read More.
Animal studies show that 1,4-dioxane can target the liver, kidneys and respiratory system, and that prenatal exposure can harm the developing fetus. The State of California has set a Public Heatlh Goal of no more than 1 part per billion of 1,4-dioxane in drinking water. The state of Massachusetts sets a legal limit of 0.3 ppb, and New Hampshire's limit is 3 parts per billion. There is no national drinking water standard for this contaminant.
207
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 |
|---|---|---|---|---|
| 2014 | 0.0117 ppb | 104 | 10 | ND - 0.250 ppb |
| 2015 | 0.0138 ppb | 103 | 14 | ND - 0.210 ppb |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 0.35 ppb
The EWG Health Guideline of 0.35 ppb for 1,4-dioxane was defined by the Environmental Protection Agency as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-09-08 | 201409101000AM | ND |
| 2014-09-08 | 201409090419AM | ND |
| 2014-09-08 | 201409090404AM | ND |
| 2014-09-08 | 201409090438AM | ND |
| 2014-09-08 | 201409100867AM | ND |
| 2014-09-08 | 201409100785AM | ND |
| 2014-09-08 | 201409100862AM | ND |
| 2014-09-08 | 201409110309AM | ND |
| 2014-09-08 | 201409090509AM | ND |
| 2014-09-08 | 201409090398AM | ND |
| 2014-09-08 | 201409101010AM | ND |
| 2014-09-10 | 201409110836AM | ND |
| 2014-09-10 | 201409110641AM | ND |
| 2014-09-10 | 201409110842AM | ND |
| 2014-09-10 | 201409110623AM | ND |
| 2014-09-10 | 201409120792AM | ND |
| 2014-09-10 | 201409120786AM | ND |
| 2014-09-10 | 201409110611AM | ND |
| 2014-09-10 | 201409110733AM | ND |
| 2014-09-10 | 201409120849AM | ND |
| 2014-09-11 | 201409120824AM | ND |
| 2014-09-11 | 201409120556AM | ND |
| 2014-09-11 | 201409120566AM | ND |
| 2014-09-11 | 201409120561AM | ND |
| 2014-09-15 | 201409160508AM | ND |
| 2014-09-15 | 201409160512AM | ND |
| 2014-09-15 | 201409170402AM | 0.110 ppb |
| 2014-09-15 | 201409170392AM | 0.110 ppb |
| 2014-09-15 | 201409160530AM | ND |
| 2014-09-15 | 201409160641AM | ND |
| 2014-09-15 | 201409160280AM | ND |
| 2014-09-15 | 201409170400AM | ND |
| 2014-09-15 | 201409160643AM | ND |
| 2014-09-15 | 201409160517AM | ND |
| 2014-09-15 | 201409160409AM | 0.0730 ppb |
| 2014-09-15 | 201409170404AM | ND |
| 2014-09-16 | 201409180294AM | ND |
| 2014-09-16 | 201409170796AM | ND |
| 2014-09-16 | 201409170851AM | ND |
| 2014-09-16 | 201409170769AM | ND |
| 2014-09-16 | 201409180308AM | ND |
| 2014-09-16 | 201409170773AM | ND |
| 2014-09-16 | 201409180359AM | ND |
| 2014-09-16 | 201409180283AM | ND |
| 2014-09-16 | 201409180287AM | ND |
| 2014-09-16 | 201409170859AM | ND |
| 2014-09-17 | 201409180597AM | 0.110 ppb |
| 2014-09-17 | 201409180629AM | ND |
| 2014-09-17 | 201409180637AM | ND |
| 2014-09-17 | 201409190240AM | ND |
| 2014-09-17 | 201409190322AM | 0.0810 ppb |
| 2014-09-17 | 201409190298AM | ND |
| 2014-09-17 | 201409180613AM | 0.0900 ppb |
| 2014-09-17 | 201409180731AM | ND |
| 2014-09-17 | 201409180622AM | ND |
| 2014-09-17 | 201409190305AM | ND |
| 2014-09-18 | 201409190439AM | ND |
| 2014-09-18 | 201409190447AM | ND |
| 2014-09-18 | 201409190441AM | ND |
| 2014-09-18 | 201409190437AM | ND |
| 2014-09-18 | 201409190425AM | ND |
| 2014-09-18 | 201409190422AM | ND |
| 2014-09-18 | 201409190433AM | ND |
| 2014-09-18 | 201409190431AM | 0.0740 ppb |
| 2014-09-22 | 201409230171AM | ND |
| 2014-09-22 | 201409230393AM | ND |
| 2014-09-22 | 201409230403AM | ND |
| 2014-09-22 | 201409230540AM | ND |
| 2014-09-22 | 201409230391AM | ND |
| 2014-09-22 | 201409230411AM | ND |
| 2014-09-22 | 201409230358AM | ND |
| 2014-09-22 | 201409230408AM | ND |
| 2014-09-22 | 201409230330AM | ND |
| 2014-09-22 | 201409230349AM | ND |
| 2014-09-23 | 201409240562AM | ND |
| 2014-09-23 | 201409240435AM | ND |
| 2014-09-23 | 201409240549AM | ND |
| 2014-09-23 | 201409240366AM | ND |
| 2014-09-23 | 201409240473AM | ND |
| 2014-09-23 | 201409240461AM | ND |
| 2014-09-23 | 201409240506AM | ND |
| 2014-09-24 | 201409250539AM | 0.0960 ppb |
| 2014-09-24 | 201409250492AM | 0.220 ppb |
| 2014-09-24 | 201409250594AM | ND |
| 2014-09-24 | 201409250589AM | ND |
| 2014-09-24 | 201409250494AM | ND |
| 2014-09-24 | 201409250629AM | ND |
| 2014-09-24 | 201409250601AM | ND |
| 2014-09-24 | 201409250487AM | ND |
| 2014-09-24 | 201409250506AM | ND |
| 2014-09-24 | 201409250599AM | ND |
| 2014-09-24 | 201409250623AM | ND |
| 2014-09-24 | 201409250619AM | ND |
| 2014-09-24 | 201409250633AM | ND |
| 2014-09-24 | 201409250587AM | ND |
| 2014-09-24 | 201409250627AM | ND |
| 2014-10-22 | 201410230290AM | 0.250 ppb |
| 2014-10-22 | 201410230348AM | ND |
| 2014-10-23 | 201410240192AM | ND |
| 2014-10-28 | 201410290225AM | ND |
| 2014-10-28 | 201410290221AM | ND |
| 2014-10-28 | 201410290364AM | ND |
| 2014-10-28 | 201410290362AM | ND |
| 2014-10-28 | 201410290374AM | ND |
| 2015-03-02 | 201503030745AM | ND |
| 2015-03-02 | 201503030747AM | ND |
| 2015-03-02 | 201503030260AM | ND |
| 2015-03-02 | 201503030753AM | ND |
| 2015-03-02 | 201503030313AM | ND |
| 2015-03-02 | 201503030262AM | ND |
| 2015-03-02 | 201503030421AM | ND |
| 2015-03-02 | 201503030398AM | ND |
| 2015-03-03 | 201503040340AM | 0.0700 ppb |
| 2015-03-03 | 201503040347AM | ND |
| 2015-03-03 | 201503040447AM | ND |
| 2015-03-03 | 201503040312AM | ND |
| 2015-03-03 | 201503040756AM | ND |
| 2015-03-03 | 201503040382AM | ND |
| 2015-03-03 | 201503040753AM | ND |
| 2015-03-03 | 201503040772AM | 0.0790 ppb |
| 2015-03-03 | 201503040768AM | ND |
| 2015-03-03 | 201503040430AM | ND |
| 2015-03-03 | 201503040468AM | ND |
| 2015-03-03 | 201503040385AM | ND |
| 2015-03-04 | 201503050520AM | ND |
| 2015-03-04 | 201503050466AM | ND |
| 2015-03-04 | 201503050451AM | ND |
| 2015-03-04 | 201503050468AM | ND |
| 2015-03-04 | 201503050555AM | ND |
| 2015-03-04 | 201503050477AM | ND |
| 2015-03-04 | 201503050479AM | ND |
| 2015-03-05 | 201503060133AM | ND |
| 2015-03-05 | 201503060336AM | ND |
| 2015-03-05 | 201503060180AM | 0.0970 ppb |
| 2015-03-05 | 201503060339AM | ND |
| 2015-03-05 | 201503060334AM | ND |
| 2015-03-05 | 201503060186AM | ND |
| 2015-03-05 | 201503060315AM | ND |
| 2015-03-05 | 201503060182AM | ND |
| 2015-03-09 | 201503100534AM | ND |
| 2015-03-09 | 201503110233AM | ND |
| 2015-03-09 | 201503110200AM | ND |
| 2015-03-09 | 201503100899AM | ND |
| 2015-03-09 | 201503100583AM | ND |
| 2015-03-09 | 201503110239AM | ND |
| 2015-03-09 | 201503100581AM | ND |
| 2015-03-09 | 201503100585AM | ND |
| 2015-03-09 | 201503110210AM | ND |
| 2015-03-09 | 201503100919AM | ND |
| 2015-03-10 | 201503110880AM | ND |
| 2015-03-10 | 201503110874AM | ND |
| 2015-03-10 | 201503120188AM | 0.0860 ppb |
| 2015-03-10 | 201503120191AM | ND |
| 2015-03-10 | 201503120234AM | ND |
| 2015-03-10 | 201503110945AM | ND |
| 2015-03-10 | 201503120240AM | ND |
| 2015-03-11 | 201503130171AM | 0.150 ppb |
| 2015-03-11 | 201503130153AM | 0.0920 ppb |
| 2015-03-11 | 201503130173AM | 0.150 ppb |
| 2015-03-11 | 201503130131AM | ND |
| 2015-03-11 | 201503130148AM | ND |
| 2015-03-11 | 201503130166AM | ND |
| 2015-03-11 | 201503130164AM | ND |
| 2015-03-12 | 201503140176AM | ND |
| 2015-03-12 | 201503140206AM | ND |
| 2015-03-12 | 201503140179AM | 0.0980 ppb |
| 2015-03-12 | 201503140204AM | ND |
| 2015-03-12 | 201503140187AM | ND |
| 2015-03-12 | 201503140172AM | ND |
| 2015-03-12 | 201503140189AM | ND |
| 2015-03-12 | 201503140197AM | ND |
| 2015-03-16 | 201503170673AM | ND |
| 2015-03-16 | 201503170670AM | ND |
| 2015-03-16 | 201503170735AM | ND |
| 2015-03-16 | 201503170561AM | 0.0720 ppb |
| 2015-03-16 | 201503170490AM | 0.0940 ppb |
| 2015-03-16 | 201503170715AM | ND |
| 2015-03-16 | 201503170717AM | ND |
| 2015-03-16 | 201503170675AM | ND |
| 2015-03-16 | 201503170719AM | ND |
| 2015-03-16 | 201503170523AM | ND |
| 2015-03-17 | 201503180515AM | ND |
| 2015-03-17 | 201503180484AM | ND |
| 2015-03-17 | 201503180738AM | ND |
| 2015-03-17 | 201503180528AM | ND |
| 2015-03-17 | 201503180548AM | ND |
| 2015-03-17 | 201503180446AM | 0.0700 ppb |
| 2015-03-17 | 201503180461AM | ND |
| 2015-03-17 | 201503180830AM | ND |
| 2015-03-17 | 201503180467AM | ND |
| 2015-03-17 | 201503180736AM | ND |
| 2015-03-17 | 201503180819AM | 0.0840 ppb |
| 2015-03-17 | 201503180519AM | ND |
| 2015-03-18 | 201503190491AM | ND |
| 2015-03-18 | 201503190562AM | ND |
| 2015-03-18 | 201503190489AM | ND |
| 2015-03-18 | 201503190548AM | ND |
| 2015-03-18 | 201503190524AM | 0.0710 ppb |
| 2015-03-18 | 201503190508AM | ND |
| 2015-03-24 | 201503250413AM | ND |
| 2015-03-24 | 201503250599AM | 0.210 ppb |
| 2015-03-24 | 201503250532AM | ND |
| 2015-03-30 | 201503160248AM | ND |
| 2015-03-30 | 201503160246AM | ND |
| 2015-03-30 | 201503160250AM | ND |
| 2015-03-30 | 201503160249AM | ND |
| 2015-04-23 | 201504240159AM | ND |