Unaccounted For Water

The health of a water distribution system is commonly gauged by a statistic known as Unaccounted for Water (UAW).  It is normally expressed as a percentage of the total volume withdrawn during a given year. The volume lost is the difference between the volume withdrawn and the volume that is accounted for.

The easiest way to account for water is through billing.   All of the servcies in Topsfield are metered and we can quickly calculate the total volume of water billed in a year.  The  billing cycles for two-thirds of our customers do not match the calendar year but the differences occur in the winter time when water use is generally lower and more likely to be consistent from year to year. The Department of Environmental Protection allows us to also account for water use that can be 'confidently estimated'. Estimated use includes water used for fire fighting & training, hydrant flushing , water main breaks, drain cleaning and street sweeping.

COVID Update:

The Water & Highway Offices remain open but may switch to appointment only or close to the public in the coming weeks depending on infection rates.

Water Department staff will visit your site for emergencies such as broken pipes, no water, low water pressure, etc. Site visits for other reasons will be evaluated on a case by case basis.

PFAS Articles

Pay your water bill online

81009 83017 0Please visit the Unibank site to pay your water or tax bills online.


Water Department

279 Boston Street

Topsfield, MA 01983


978.887.1543 (Fax)

911 -  After Hours Emergency

Hours: Monday-Friday 7 AM to 3:30 PM

Highway Department

279 Boston Street

Topsfield, MA 01983


978.887.1543 (Fax)

Hours: Monday-Friday 7 AM to 3 PM