Cambridge MA Water Bill Help
Need to pay a Cambridge water/sewer bill, call the Tax Collector, request a final water bill, ask about a meter reading, update high-read contact details, understand FY26 rates, or report a water emergency? Use this task-first guide to reach the correct official City of Cambridge route.
Fast Answer: Choose Your Cambridge Water Task
Use the City’s InvoiceCloud portal. Select Water and enter the exact 8-digit account number from your bill.
Pay onlineCall IVR at 617-314-8226. Balance checks are free; a $0.95 fee applies only when payment is made.
Phone payment infoUse the official final water bill request form before property sale, closing, or ownership change.
Final bill infoFor a water-related emergency, call the Water Department at 617-349-4770, 24 hours a day.
Contact Water Dept.Cambridge MA Water Bill Payment Options
Cambridge water/sewer bills are issued quarterly by the Cambridge Water Department together with the Tax Collector’s Office. All bills are due within 30 days of the billing date.
| Payment method | Official detail | Best for | User warning |
|---|---|---|---|
| Online InvoiceCloud portal | Select Water and search by exact 8-digit account number as it appears on the bill. | Fast online payment and bill lookup. | Payment is considered made when received by the Collector. Do not wait until after business close on the due date. |
| One Time Pay | No registration is required for One Time Pay, which is the fastest online route. | Simple one-time water/sewer bill payment. | Use only the official cambridgema.gov or invoicecloud.com/cambridgema route. |
| Credit / debit card | Official pages list a 2.95% card fee. Review the minimum fee shown at checkout. | Convenience payment when card fee is acceptable. | For water/sewer bills, the portal notes Visa is not accepted; MasterCard, Discover and American Express are accepted. |
| E-Check / ACH | E-Check fee is listed as $0.40 per transaction. | Lower-fee online payment by checking account. | Returned check fee may apply if routing/account details or funds are wrong. |
| Phone IVR | Call 617-314-8226. Balance checks are free; an extra $0.95 fee applies only for payments. | Paying or checking a balance by phone. | For urgent payment questions, still call Tax Collector at 617-349-4220. |
| Make checks payable to The City of Cambridge and mail to Tax Collector’s Office, PO Box 399142, Cambridge, MA 02139-9142. | Non-urgent check or money order payment. | Do not rely on postmark. Mail payment must be received by the due date. | |
| City Hall payment mailbox | Payment mailbox is at the rear of City Hall, 795 Massachusetts Avenue, for sealed check or money order payments. | Local drop-off payment without mailing. | Do not place cash in the payment mailbox. |
Online Portal: Exact Account Number Matters
8-digit account number
The water payment search asks for the exact 8-digit account number as it appears on the bill. It is located below the service address on the printed bill.
Two charges may show
Online payment can appear as two charges: one for the bill payment and one for the transaction fee charged by the payment processor.
Large payment limits
The portal lists high payment limits for credit card and ACH, but always verify current checkout limits before submitting a large payment.
Cambridge Water Department Phone, Address and Hours
Payment questions
617-349-4220
Tax Collector / Finance payment questions, payment status, fees and mailed-payment help.
Meter / service
617-349-4771
Meter readings, address changes, service calls and final bill timing questions.
Water emergency
617-349-4770
Water-related emergency help, 24 hours a day.
Water Department
250 Fresh Pond Parkway
Cambridge, MA 02138
Email: CWD@cambridgema.gov
| Office / contact | Address | Hours |
|---|---|---|
| Cambridge Water Department | 250 Fresh Pond Parkway, Cambridge, MA 02138 | Monday 8:30 a.m.–8 p.m.; Tuesday–Thursday 8:30 a.m.–5 p.m.; Friday 8:30 a.m.–12 p.m. |
| Finance / Tax Collector | 795 Massachusetts Avenue, 1st Floor, Cambridge, MA 02139 | Monday 8:30 a.m.–8 p.m.; Tuesday–Thursday 8:30 a.m.–5 p.m.; Friday 8:30 a.m.–12 p.m. |
Pay by Mail or City Hall Payment Mailbox
Mail payment
Make checks payable to The City of Cambridge and mail to:
Tax Collector’s Office
City of Cambridge
PO Box 399142
Cambridge, MA 02139-9142
Payment mailbox
A payment mailbox is available at the rear of City Hall, 795 Massachusetts Avenue. Use sealed envelopes with payment stub and identifying information. Do not leave cash.
Final Water Bill Request for Sale, Closing or Ownership Change
Best first step: Start from the official Water Bill Information & Final Bill Requests page and complete the City’s final water bill form. For time-sensitive real estate closings, call 617-349-4771.
Open the official final bill route
Use the City’s Water Bill Information & Final Bill Requests page, not a private payment guide or search ad.
Prepare property details
Keep service address, account number, closing date, contact person, phone number and email ready.
Submit early
Final water bills can affect settlement paperwork. Do not wait until closing day if possible.
Call if urgent
For urgent final bill timing, call the Water Department Administration Division at 617-349-4771.
How to Read a Cambridge Water Bill
| Bill item | What it means | Why it matters |
|---|---|---|
| Account Number | Identifies you and the property address in the billing system. | Use this number whenever you contact the City or pay online. |
| Service Address | The property location or service address. | Confirms the bill belongs to the correct property. |
| Bill Date | Date the bill was issued. | Due date is based on the billing timeline. |
| Due Date | Date payment must be received to avoid interest charges. | Mailing on the due date is not enough. |
| Previous / Current Meter Reading | Meter readings from the prior and current billing periods. | Use these to check usage changes or confirm a reading. |
| Usage | Water used for the billing period. | High usage can indicate a leak, meter issue, occupancy change or seasonal use. |
| Message Box | Current messages and alerts from the Cambridge Water Department. | Read it before calling; it may explain notices or account conditions. |
FY26 Cambridge Water/Sewer Rates and Senior Discount
Cambridge uses a block rate system. The City states FY26 rates commence with water/sewer usage as of April 1, 2025 and appear in bills issued as of July 1, 2025. Rates are per CcF; 1 CcF equals 100 cubic feet, about 750 gallons.
| Quarterly consumption block | FY26 water rate | FY26 sewer rate | User note |
|---|---|---|---|
| Block 1: 1 to 10 CcF | $3.84 | $17.12 | Lowest usage block. |
| Block 2: 11 to 100 CcF | $4.10 | $18.10 | Common residential range. |
| Block 3: 101 to 500 CcF | $4.36 | $19.45 | Check for leaks or high-use property patterns. |
| Block 4: 501 to 2,500 CcF | $4.63 | $20.93 | Large property or very high usage. |
| Block 5: Over 2,501 CcF | $5.03 | $22.25 | Highest listed block. |
15% senior discount
Residents age 65 or older who own and occupy a one, two or three family home may qualify for a 15% water/sewer discount, not to exceed $90 per year.
30% Clause 41C discount
Residents granted a Clause 41C elderly exemption on real estate taxes may receive a 30% discount, not to exceed $180 per year. The City says this is automatically granted where applicable.
High Read, Leak Detection and Meter Replacement
High Read program
Cambridge’s AMR system allows real-time readings multiple times per day and helps the Water Department notify owners when high usage is detected.
Update contact info
Email waterbill@cambridgema.gov with contact person, account number, phone number and email address so the City can reach you about high reads.
Running toilet risk
The City notes that a running toilet is a leading cause of wasted water. Use a dye tablet test before assuming the bill is wrong.
| Issue | Official / practical step | Contact route |
|---|---|---|
| Need leak detection kit | Request a Leak Detection Kit and test toilet tanks with dye tablets. | Call 617-349-4737 or email the Water Department. |
| Toilet dye test shows color in bowl | Damaged flapper or valve may be leaking. | Repair quickly, then monitor usage again. |
| Faucet or pipe drip | Check under sinks and exposed pipes with water on and off. | Fix leaks and keep repair notes for your records. |
| Received meter replacement notice | Schedule appointment for a new meter at your convenience. | Call 617-349-4737 or email the Water Department. |
| Want to verify bill reading | Locate meter, read the numbers and compare to the bill. Cambridge bills by CcF and rounds to nearest 100 cubic feet. | Call 617-349-4771 for meter/service questions. |
Drought Status and Outdoor Water Use Warning
Outdoor use
Do not assume normal lawn watering or outdoor washing is allowed during a critical drought notice.
High bill tie-in
Outdoor use and irrigation can raise usage and may also violate drought restrictions.
Check before acting
Use the official Water Department drought / conservation page for the latest restriction level.
Emergency Water Issue vs Normal Billing
| Situation | Use this contact | What to say |
|---|---|---|
| Water-related emergency | 617-349-4770, 24 hours | Give address, cross street, visible issue, safety risk and callback number. |
| Water bill payment question | 617-349-4220 | Ask Tax Collector about payment status, online fee, mailed check, balance or due date. |
| Meter reading, address change, service call | 617-349-4771 | Give account number, service address, meter issue and contact information. |
| High read contact update | waterbill@cambridgema.gov | Send contact person, account number, phone number and email address. |
| Immediate danger | 911 | Use for life safety, electrical danger, major flooding danger or injury. |
Who To Call for Cambridge Water Department Help
Tax Collector
617-349-4220
Payment questions, fee questions, mailed payments, online payment status.
Administration
617-349-4771
Meter readings, address changes, service calls and final bill questions.
Emergency
617-349-4770
Water-related emergencies, 24 hours a day.
Leak kit / meter
617-349-4737
Leak Detection Kit requests and meter replacement appointment questions.
Cambridge Water Department Map and Visit Planning
Use this map for Cambridge Water Department matters at 250 Fresh Pond Parkway. If your issue is payment-specific, the Tax Collector / Finance office at 795 Massachusetts Avenue is the better contact.
Water Department
250 Fresh Pond Parkway, Cambridge, MA 02138.
Finance / Tax Collector
795 Massachusetts Avenue, 1st Floor, Cambridge, MA 02139.
Bring this
Bill, account number, service address, payment proof, meter reading/photo, closing date if final bill is involved.
Local Cambridge Water Bill Tips That Save Time
Use the exact 8-digit account number
The water portal requires the exact account number from the bill. It is printed below the service address.
Call the Tax Collector for money questions
Even though the Water Department issues bills with the Tax Collector, payment status and fee questions belong with Finance / Tax Collector.
Request final bills early
Final water bills can affect property closings and ownership changes. Submit the final bill form before the deadline becomes urgent.
Update high-read contact info
High-read notices are only useful if the City has the right phone and email for the property owner or contact person.
Official Cambridge Water Links
Cambridge Water Department FAQs
Where do I pay my Cambridge MA water bill online?
Use the official City of Cambridge InvoiceCloud portal at invoicecloud.com/cambridgema or start from the City’s Pay or View a Bill Online page and choose Water.
What account number do I need for online payment?
The water payment search asks for the exact 8-digit account number as it appears on the bill. It is located below the service address on the printed bill.
What is the Cambridge water bill phone payment number?
Call the IVR payment system at 617-314-8226. You can check balances for free. A $0.95 fee applies only when a payment is made.
Who do I call for water bill payment questions?
Call the Tax Collector’s Office / Finance at 617-349-4220 for payment questions, online payment issues, fee questions and mailed payment status.
Who do I call for meter readings, address changes or service calls?
Call the Water Department Administration Division at 617-349-4771 for meter readings, address changes, service calls and final water bill timing questions.
What is the Cambridge Water Department emergency phone number?
For a water-related emergency, call the Cambridge Water Department at 617-349-4770. The City lists this emergency line as available 24 hours a day.
Where do I mail a Cambridge water bill payment?
Make checks payable to The City of Cambridge and mail to Tax Collector’s Office, City of Cambridge, PO Box 399142, Cambridge, MA 02139-9142.
How often are Cambridge water bills issued?
The Cambridge Water Department and Tax Collector’s Office issue water/sewer bills quarterly. Bills are due and payable within 30 days of the billing date.
How do I update high-read contact information?
Email waterbill@cambridgema.gov and include a contact person, account number, phone number and email address so the Water Department can reach you when high usage is detected.
Does Cambridge offer a senior water/sewer discount?
Yes. Residents 65 or older who own and occupy their one, two or three family home may qualify for a 15% discount, not to exceed $90 per year. Clause 41C elderly exemption recipients may receive 30%, not to exceed $180 per year.
Pay Your Water Bill Safely, Fix High Bills, Avoid Shutoff, Start Service and Find Official Utility Links
Use this free USA water bill assistant before paying online, calling utility billing, setting up AutoPay, checking a high bill, requesting leak help, starting or stopping service, handling a past due account, or searching for the official city utility portal.
What water bill problem do you need to solve?
Choose your situation. The tool will suggest the safest route, what to prepare, and which official page or office to check first.
Open the official city, county, water authority or utility website first. Do not enter account details into a random sponsored payment page.
If the bill is unusually high, compare usage, billing days, meter read type, toilet leaks, irrigation, late fees and leak adjustment rules before paying blindly.
Safe Water Bill Payment Route
Choose how you want to pay. This helps users avoid wrong portals, posting delays and urgent shutoff mistakes.
AutoPay / Bank Draft Setup Helper
Use this before enrolling in recurring payments so the first draft, current balance and payment date do not surprise you.
High Water Bill Review
Compare your normal bill and usage with the current bill. This gives a practical path before requesting a high bill review.
Leak Adjustment Proof Checklist
Use this before asking for a leak adjustment, high bill review, sewer adjustment or payment plan.
Past Due, Shutoff Notice and Reconnect Helper
Use this if your bill is late, you received a shutoff notice, service is off, or you need a payment plan.
Start, Stop or Transfer Water Service
Use this before moving, closing an account, starting service, transferring service or requesting a final bill.
Water Bill Cost Estimate
Estimate a simple monthly bill from base charge, water usage, sewer, stormwater, trash, service fees and late charges. Official tiered rates may be different.
Bill Dispute and Meter Reading Checklist
Use this before calling billing support about a meter reading, duplicate payment, wrong address, missing payment, estimated bill, or incorrect charge.
Official Water Bill Portal and Phone Finder
Enter city/utility and state to create safe searches for official water bill pay, phone payment, guest pay, AutoPay, start service, leak adjustment, reconnect, assistance and this site’s guide.
Official portal safety
- Use official city, county, authority or utility websites first.
- Check service address before paying.
- Save confirmation number and screenshot.
- Call the utility for shutoff or reconnect situations.
Best sitewide placement
Place this tool after the first payment section or before FAQs. It turns every water bill article into a practical help page, not only a list of links.
Important note
This tool gives educational guidance only. Always confirm payment portals, fees, shutoff rules, assistance programs, account balance and reconnection steps with the official utility.