Company: MSEX
Filing Date: 2025-02-28
Form Type: 10-K
Source: 0001174947-25-000251
Chunk: 11

Company: MIDDLESEX WATER CO
Filing Date: 2025-02-28
Form: 10-K
Item: Item 1
Chunk 11
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 with information on the levels of Regulated PFAS in their drinking water
beginning in 2027. Water systems have five years (by April 2029) to implement solutions that reduce Regulated PFAS if monitoring shows
that drinking water levels exceed these MCLs.

Beginning in April 2029, water systems that have
Regulated PFAS in drinking water which exceeds one or more of these MCLs must take action to reduce levels of these PFAS compounds in
their drinking water and must provide notification to the public of the violation.

In anticipation of these new USEPA standards,
in 2023, the Company began implementing its strategy to meet these lower MCLs for Regulated PFAS and is currently performing preliminary
engineering studies to ensure that effective PFAS treatment approaches are implemented.

We treat the groundwater supplies in our Middlesex
System with chlorination for primary disinfection purposes and use air stripping for removal of volatile organic compounds.

Surface water treatment in our Middlesex
System is by conventional treatment; coagulation, sedimentation and filtration. The treatment process includes pH adjustment, ozone and
chlorination for disinfection, and corrosion control for the distribution system.

Treatment of groundwater in our Tidewater System
is by chlorination for disinfection purposes and, in some cases, pH adjustment and filtration for nitrate and iron removal and granular
activated carbon filtration for organics removal. Chloramination is used for final disinfection at Southern Shores.

Treatment of groundwater in the Pinelands Water
System (primary disinfection only) is performed at individual well sites.

Treatment of wastewater in the Pinelands Wastewater
System includes the use of rotating biological contactors.  

The NJDEP and DEDPH monitor our activities and
review the results of water quality tests that are performed for adherence to applicable regulations. Other applicable regulations include
the Lead, Copper and Lead Service Line Rules, the Federal Surface Water Treatment Rule and the Federal Total Coliform Rule and regulations
for maximum contaminant levels established for various volatile organic compounds.

The Company must comply with various environmental
laws and regulations promulgated by the USEPA, NJDEP and other governmental agencies, including the Toxic Catastrophe Prevention Act,
the Spill Prevention, Control, and Countermeasure Rule and the Discharge Prevention Program of the New Jersey Spill Compensation and Control
Act.

Seasonality

Customer demand for our water during the warmer
months is generally greater than other times of the year due primarily to