City of Modesto Utilities: backflow testing rules
Serves Modesto, CA. 5 points from City of Modesto Utilities's own pages, read October 7, 2026, each linked to the page it came from.
City of Modesto Utilities at a glance
- When the test is due
- Every commercial and industrial business must have a backflow assembly, and owners must have it tested each year by a certified tester and reported to the city. Source.
- Fee
- The city's cross connection specialist will survey a facility for free to recommend the right backflow preventer. Source.
- If a test is missed
- Owners who do not comply may have water service terminated and may be fined or penalized. Source.
- Approved testers
- City of Modesto Utilities keeps its tester register in an online lookup on modestogov.com, linked and not copied. Open the lookup.
Notices and deadlines
- When a test, repair or installation is missing the city sends a notice of non compliance, and the owner should confirm the tester sent the report to cross connection staff. Source.
Approved testers
- Modesto keeps a Certified Tester list in its online business directory. Source.
Program
- The City of Modesto runs a Cross Connection and Backflow Control Program to protect its drinking water system. Source.
From notice to filed report, the steps are the same everywhere: how a backflow test goes.
Other water utilities in California
- Los Angeles Department of Water and Power
- East Bay Municipal Utility District
- City of San Diego Public Utilities Department
- San Jose Water
- City of Fresno Department of Public Utilities
- Long Beach Utilities
- Burbank Water and Power
- City of Santa Ana Water Resources
Read October 7, 2026. Program page: modestogov.com.