The short answer
This is a legitimate payment for sewer and water services to the City of San Diego.
What is SEW*COSD?
A banking statement entry showing SEW*COSD represents a municipal utility payment for sewer and water services administered by the City of San Diego. This official billing descriptor is generated when property owners and local residents pay their public utility bills through online municipal payment portals, automated clearing house transfers, or recurring bank drafts managed by city finance departments.
This charge appears on monthly or bi-monthly billing statements to cover essential public water delivery, wastewater treatment, and regional infrastructure maintenance based on metered household consumption. Because many residents set up automatic utility payments to avoid late fees, these charges recur regularly according to municipal billing cycles and historical water usage meters recorded at your property address.
To verify the validity of this transaction, log in to your official City of San Diego public utilities account dashboard to cross-reference payment amounts and invoice dates against your billing history. If you notice any discrepancies or suspect duplicate billing, contact municipal customer support directly or review your account portal before contacting your financial institution to dispute the charge or request payment adjustments.
- Verify the payment amount against your City of San Diego Public Utilities bill.
- Check your City of San Diego online account dashboard for a matching payment date.
- Ensure you did not accidentally set up duplicate automatic payments if you see this charge twice in one month.
Why did City of San Diego charge my card or bank account?
Charges from City of San Diego under statement descriptor "SEW*COSD" usually correspond to authorized direct purchases, digital orders, or recurring membership renewals.
How do I cancel future charges or dispute an error with City of San Diego?
Log in to your City of San Diego account portal at https://www.sandiego.gov to cancel your subscription or request an order adjustment.
Independent reference — not affiliated with City of San Diego. Billing names and policies change; verify with the merchant or your bank before acting.
Verified sources
Every claim on this page is checked against official sources — open them to confirm before you call your bank.
- City of San Diego Billing https://www.sandiego.gov
- CFPB Cardholder Dispute & Billing Rights Guide https://www.consumerfinance.gov/ask-cfpb/how-do-i-dispute-a-charge-on-my-credit-card-en-1965/
Reviewed Aug 31, 2026 · high · About UnknownCharges