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Submetering Apartments in Boston, Massachusetts

On a master meter, one Boston bill covers every unit and the owner eats it. NES submeters each unit, reads them daily, pays the master-meter bill, and bills your residents for what they use. Get a free bid.

Privately owned since
1968Privately owned since
States served
43+States served
Typical utility savings
15-40%Typical utility savings
In-house support
BilingualIn-house support

NES handles water/sewer submetering for apartment communities, condominiums, and mobile home parks across Boston and the Greater Boston. Install, meter reading, resident billing, and compliance, all handled in-house since 1968.

Yes. Submetering is allowed in Boston, Massachusetts, for water and sewer, under strict state rules.

Massachusetts allows water and sewer submetering under strict conditions, with no fees added to resident bills, and NES handles the requirements for you.

What we submeter
  • Water & sewer

    Per-unit water and sewer metering with 24-hour leak alerts.

Rules & compliance

Submetering rules & laws in Boston

Governing rule: M.G.L. c. 186 s. 22 · Massachusetts DPU

Massachusetts state rules

  • Massachusetts law (M.G.L. c. 186 s. 22) allows water and sewer submetering only under strict conditions: meters installed by a licensed plumber, conservation fixtures in every unit, certification to the local board of health, a new tenancy with a written lease, and billing at the water company's rate with no administrative, billing, or other fee. Formula (RUBS) billing for water is not allowed
  • The Department of Public Utilities does not allow reselling electricity or gas to residents, so those utilities are metered by the utility in the resident's name. Trash collection cannot be billed to residents either
  • NES sets up water and sewer billing to meet those conditions, at the water company's rate with no fees added to resident bills
  • NES checks each property against the c. 186 s. 22 conditions before billing starts

Local Boston requirements

  • Water and sewer service in Boston comes from the Boston Water and Sewer Commission, which buys wholesale water from the Massachusetts Water Resources Authority
  • Electricity is provided by Eversource, and natural gas by National Grid or Eversource depending on the address
  • Water and sewer billing in Boston follows state law (M.G.L. c. 186 s. 22): a licensed plumber installs the meters, units have conservation fixtures, the setup is certified to the board of health, and residents pay the water company's rate with no fees
  • Electricity and gas stay with the utility in the resident's name, since Massachusetts does not allow reselling them
  • We serve properties in Boston, Cambridge, Somerville, Brookline, Quincy, Newton, Malden, and Medford
  • NES confirms the rules for your address before the first meter goes in.

How NES keeps you compliant

  • Tracks every Massachusetts and local rule that affects your property
  • Handles rate registrations and required filings
  • Keeps audit-ready billing archives
  • Manages tenant disclosures and meter testing
See how NES handles compliance

Official sources: Mass.gov: Submetering Water for Tenants · M.G.L. c. 186 s. 22 · Mass.gov: Electric Submetering · Boston Water and Sewer Commission

General information only, not legal advice; NES assumes no liability for reliance. Confirm current rules with the Massachusetts DPU or a qualified attorney.

Why owners in Greater Boston use NES

  • Per gallon. Residents pay for what they actually use.
  • 15-30%. Lower utility consumption.
  • Under 24 hr. Leaks flagged the same day.

What happens after you call

  1. Step 1

    Free assessment

    We review your master-meter bills and unit count, then model what you would recover. There is no charge for this.

  2. Step 2

    Install meters

    We install nonproprietary meters at each unit. The equipment is yours, and other companies can read it.

  3. Step 3

    Read & detect

    Daily reads pull usage automatically and flag leaks within 24 hours, before they run up a bill.

  4. Step 4

    Bill & support

    We bill residents, pay the master-meter utility, and field resident questions in-house, in English and Spanish.

Real NES results

140-home community, New MexicoWater & sewer
$264 / yr
owner's annual water and sewer cost, down from $26,400

The owner had been absorbing the whole master-meter bill. After metering each home, residents paid for what they used. Figures from NES property records.

130-home park, TexasWater & sewer
$6,600 / yr
annual water and sewer cost, down from $120,000

The park also gained more than $113,000 in annual revenue once each home was billed for its own use. Figures from NES property records.

Real NES properties. Results vary by property, utility rates, and resident mix.

Common questions

Submetering apartments in Boston

Utility submetering puts a meter on each unit that measures and bills its water/sewer use. The technology has been around since the early 1920s. NES installs the meters, reads them, pays the master-meter bill, and bills your residents, all in-house and with bilingual support.

See what your Boston property can recover.

Send us your master-meter bills and unit count. We’ll run the numbers on your actual property and get back to you within one business day with an estimate.

  • Free estimate
  • We check the local rules first
  • Meters any company can read
Free assessment

Get a free bid for your property

Tell us about your Boston property and we’ll respond within one business day.

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