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Service Area

Boundaries from the EPA Water System Service Areas dataset. Not all utilities have mapped boundaries.

How we calculated this
Extracted by: Gemini 3 Flash · 05/09/2026
Source:
Quality checks: 8/8 passed
  • ✓ Monotonic pricing
  • ✓ Price range plausible
  • ✓ Fixed charge range
  • ✓ No zero tier prices
  • ✓ Tier count (1–8)
  • ✓ Tier boundary scale
  • ✓ Residential customer class
  • ✓ Effective date parseable
  • — Plausible for MA 
Volume: 6,000 gal = 6.00 kgal
  0–0.14212 kgal  ×  $9.3840/kgal  =  $1.33
  0.14212–0.29164 kgal  ×  $10.0220/kgal  =  $1.50
  0.29164–0.66544 kgal  ×  $10.9300/kgal  =  $4.09
  0.66544–2.60924 kgal  ×  $11.6490/kgal  =  $22.64
  2.60924–6.00 kgal  ×  $12.2610/kgal  =  $41.57
Total: $71.14/mo
About our methodology ↗

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BOSTON, MA

BOSTON WATER AND SEWER COMMISSION (MWRA)

BOSTON WATER AND SEWER COMMISSION (MWRA) serves 675,647 people in BOSTON, MA. The monthly residential water bill at 6,000 gallons is $71.14, 47% above the national average of $48.47.

Updated May 2026

Beta. Data is actively being expanded. Results may vary. if something looks off.

Monthly Rate

$71.14 / 6k gal
+47% vs natl avg

Volumetric Rate

$11.86 / 1k gal

Population Served

675,647

Water Burden

0.9% of income (annual)
of median area income · affordability threshold: 2%

Regional Comparison

Monthly cost (6k gal) vs nearby utilities. Click to navigate.

WORCESTER DPWP, WATER SUPPLY DIVISION
$30.88
WORCESTER DPWP, WATER SUPPLY DIVISION
WORCESTER, MA · $30.88/mo
MWRA
$33.41
MWRA
CHELSEA, MA · $33.41/mo
ABINGTON/ROCKLAND JOINT WTR. WORKS
$63.28
ABINGTON/ROCKLAND JOINT WTR. WORKS
ROCKLAND, MA · $63.28/mo
BOSTON WATER AND SEWER COMMISSION (MWRA)
$71.14
BOSTON WATER AND SEWER COMMISSION (MWRA)
BOSTON · $71.14/mo

Details

Provider Type
Local Govt
Primary Source
SWP
Data Quality
Model estimate
Rate Source
PWSID
MA3035000

Methodology

Rates are standardized to 6,000 gallons per month for a typical residential consumer with a 5/8" or 3/4" meter. Includes fixed base charges and volumetric charges. Excludes taxes, sewer fees, and other surcharges.

Full methodology ↗