SMARTVALVE

Water Rates in Boston, MA

The Boston Water and Sewer Commission serves Boston with a complex rate structure. Understanding your tiers and sewer multiplier is the first step to mitigating an unexpectedly high bill.

Effective Blended Rate

$22.03/kGal

Rate Structure

1 Tiers

flat volumetric Sewer

Last Verified

Feb 2026

Official Rate Card ↗

Volumetric Water Tiers

TierUsage Range (kGal)Rate / kGal
Flat RateFirst $7.43

Sewer & Infrastructure Logic

Boston calculates sewer charges using the flat volumetric method.

Flat sewer rate on all metered usage

Sewer Rates

0 - null kGal$14.60/kGal

Monthly Base Fees (5/8" Meter)

Water Base$5.48
Sewer Base$5.48

Flat Rate Utility

Boston uses a flat rate structure. You are not penalized with higher rates for using more water, but conservation still lowers your bill directly!

Water Quality Alert

Live data from EPA ECHO Database

Check your local water utility for Safe Drinking Water Act (SDWA) violations and contaminant alerts.