LYNN — The Water & Sewer Commission has released its annual water quality report, showing the city’s drinking water remained in full compliance with all federal and state drinking water standards.

According to the report, Lynn operates six public surface water supply sources, three of which are located within the city. The remaining sources are in Lynnfield and Saugus. Water is treated at the Raymond F. Reardon Treatment Plant before being pumped to the low-service reservoir, the distribution system, and storage tanks.

Water Treatment Superintendent Matt Comeau said Lynn’s water is “just as good as it’s always been,” highlighting the system’s zero violations and full compliance.

The report contains results from water testing conducted during 2025. Of the 17 substances tested, none resulted in violations. The report lists four unregulated substances that were detected in the water, none of which constituted a drinking water violation.

Nickel was detected at 2 parts per billion and is naturally occurring.

Perfluorobutanesulfonic acid was detected at 2.10 parts per trillion.

Perfluorohexanoic acid was detected at 3.10 parts per trillion.

Sodium was detected at 75.20 parts per million.

The city also uses surface water from the Massachusetts Water Resources Authority to serve General Electric in Lynn and as an emergency water source for customers.

According to the report, Lynn uses a direct filtration treatment plant to purify drinking water. Raw water is treated with chemicals and filtered to remove particles and microorganisms that can affect taste, odor, and water quality. The treatment process includes chemical treatment, filtration, disinfection, and the addition of corrosion-control chemicals to help protect public health.

The report also states that zinc orthophosphate is added as a corrosion inhibitor to help prevent lead and other metals from leaching from household plumbing into drinking water.