1,2-Dichloroethane in Well Water: The Public 0.005 Line

By SubcontractorHub Editorial Team·Published October 2026

A solvent panel can list several names that share the digits 0.005. The row next to 1,2-dichloroethane is not the row next to dichloromethane, and it is not the row next to benzene. Dealers who sell treatment still have to say which public line they are reading. SubcontractorHub is software for the customer record. This page is the row. It is not a treatment design.

Dichloromethane, also at 0.005 mg/L with a goal of zero, already has its own page: dichloromethane in well water. Vinyl chloride, which marks a different technology column, is vinyl chloride in drinking water. 1,2-Dichloroethane in well water is only this CAS.

The 0.005 Line Is Not Dichloromethane

EPA's national primary table, fetched the day this page was written, lists 1,2-dichloroethane with an MCLG of zero and an MCL of 0.005 mg/L. The potential-effects cell says an increased risk of cancer. The source cell says discharge from industrial chemical factories. Footnote 2 says units are milligrams per liter unless otherwise noted, and that milligrams per liter are equivalent to parts per million.

Dichloromethane, on that same table, also prints an MCLG of zero and an MCL of 0.005 mg/L. Its health cell adds liver problems to the cancer sentence. Its source cell says discharge from drug and chemical factories. The digits match. The sentences do not. Quoting a bare 0.005 without the name lets the next reader pick either row.

Cornell's copy of 40 CFR 141.61 prints 1,2-dichloroethane as table 1 item (4), CAS 107-06-2, MCL 0.005 mg/L. Paragraph (a) says the volatile-organic MCLs apply to community and non-transient, non-community water systems. It does not name a single-home well. If the jug is a private well, say so before anyone treats the public MCL as a pass-fail for that house.

What the 1,2-Dichloroethane in Well Water Note Holds

The table above is the note. It is not a quote, and it is not a removal design. A customer who wants a price still needs a test, a model, and a scope. Those live on the job. This page only stops the dichloromethane health sentence, or a single technology mark, from landing on a row that marked two columns.

What the Two Marks Do Not Promise

Table 2 marks best available technology for the organic rows, except PFAS. The columns are granular activated carbon, packed tower aeration, and oxidation. On the 1,2-dichloroethane row, carbon is marked and aeration is marked. Oxidation is empty. Dichloromethane, on that same table, leaves carbon empty and marks aeration only. Vinyl chloride also leaves carbon empty and marks aeration only. Copying either of those single marks onto this row invents a blank the table did not leave, or drops a mark the table printed.

The introducing paragraph calls the marks the best technology, treatment technique, or other means available for achieving compliance with the MCL. It does not say what percent a tank in a basement will remove. A city plant and a point-of-entry tank are not the same machine. If you sell carbon or aeration, say which one you sell. Do not say the X is a guarantee on this well. No removal percentage was fetched for this row, so none is printed here. No installed price was fetched, so none is printed.

What Should the 1,2-Dichloroethane Note Say?

Five lines keep the next visit from borrowing dichloromethane, or from writing a liver sentence this health cell did not print. Name the contaminant the lab printed, show the goal and the MCL, and say whether the jug is a private well.

1. The contaminant name as the lab printed it, including CAS 107-06-2 if the sheet uses the number, and not dichloromethane.
2. The result and the unit. If the unit is not milligrams per liter, do not drop the unit and call the result 0.005.
3. The public pair you compared it with: MCLG zero and MCL 0.005 mg/L, named as the national 1,2-dichloroethane row.
4. Whether the sample is a private well or a public system. Paragraph (a) names community and non-transient, non-community systems. It does not name a single house.
5. What you did not claim: no removal percent, no installed price, and no statement that 0.005 mg/L is dichloromethane's row.

Where the Row Sits on the Job

The lab sheet belongs with the customer, the address, and the date of the sample. A price for equipment is a later page, after someone has read this row and the solvent rows next to it. Mixing the 0.005 line into a carbon quote because another solvent marked carbon skips the empty oxidation cell and skips the fact that dichloromethane left carbon empty.

The health cell on the fetched table is an increased risk of cancer, described as a potential effect of long-term exposure above the MCL. That sentence is the public table's cell. It is not a finding about the household. If a customer asks what the number means for a person, the honest line is that this page is not medical advice.

How a dealer reads a full panel is the well water testing guide. How the technology columns are named, without turning a mark into a percent, is what best available technology means. The software that holds the customer file is water treatment contractor software. This article does not size a filter and does not tell a household the water is safe to drink.

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