Backflow testing for Town of Hillsborough customers
Hillsborough runs its Cross Connection Control Program together with San Mateo County Environmental Health, which sets the testing rules. BackflowCare tests assemblies for Town of Hillsborough customers in Hillsborough, and files the results with Town of Hillsborough.
- Area
- San Mateo County
- Cities we serve
- Hillsborough
- Annual test
- Owner hires a certified tester
- Deadline
- The tester sends the test report to County Environmental Health within 10 calendar days.
- Town of Hillsborough fee
- Late testing can bring administrative fines of up to $500 per day, per assembly.
- Our price
- $199 per device ($25 off for new customers)
Town of Hillsborough testing rules
- In the San Mateo County program, only a County-certified backflow tester may test assemblies.
- Assemblies must be tested at least once a year, and again after installation or repair.
Source: Town of Hillsborough Water backflow program (official page), checked October 19, 2026.
Town of Hillsborough backflow questions
Who tests backflow devices for Town of Hillsborough customers?
Hillsborough runs its Cross Connection Control Program together with San Mateo County Environmental Health, which sets the testing rules.
Which cities does Town of Hillsborough serve?
We serve Town of Hillsborough customers in Hillsborough.
When is the Town of Hillsborough backflow test due?
The tester sends the test report to County Environmental Health within 10 calendar days.
Does Town of Hillsborough charge a backflow fee?
Late testing can bring administrative fines of up to $500 per day, per assembly. It is separate from our $199 test price.