In addition to being called Mahachai, Samut Sakhon also has another name in Teochew dialect, Lang-Ka-Su (Chinese: 龍仔厝; pinyin: Lóng zǐ cuò), literally means 'home of dragon descendants'.

[1] In September 2013, the wreck of an ancient Arab ship was excavated at a shrimp farm in Phanthai Norasing Subdistrict, Mueang Samut Sakhon District.

Soil and water samples from the industrial area of Mueang District were found to be contaminated with high levels of arsenic, lead, cadmium, chromium, zinc, copper, and nickel.

High levels of persistent organic pollutants (POPS), byproducts of industrial processes, were present in eggs from free-range chickens.

An egg tested by researchers was found to have 84 nanograms per kilogram of dioxins and furans, a level 33 times higher than the safety limit observed by the European Union.

Samut Sakhon itself has city status (thesaban nakhon) and covers the three subdistricts Maha Chai, Tha Chalom, and Krokkrak.