Backflow Testing and Prevention in Mission Viejo, CA
A backflow device keeps used water out of the clean supply. It only works if someone checks it. Call to book a test or fix a failed one.
- 24/7 emergency calls
- Nights, weekends and holidays
- Mission Viejo, CA
What Backflow Is and Why It Matters
Backflow testing in Mission Viejo, CA checks the device that stops water from flowing the wrong way. East Bay Municipal Utility District defines backflow as an undesired reversal in the direction of the flow of water. In a house, that means irrigation water, pool water or other used water moving back toward the drinking supply.
Two things cause it. Back-siphonage happens when pressure in the supply drops below atmospheric pressure, such as during a main break or heavy fire flow. Back-pressure happens when pressure in the downstream system is higher than the supply.
The device between the two prevents it. A device that has stuck, cracked or worn cannot do its job, and you cannot tell by looking. Only a test shows whether it holds.
Where Backflow Devices Are Found
| Location | Why a device is there | Common type |
|---|---|---|
| Irrigation system | Sprinkler lines can hold fertilizer and soil water | Pressure vacuum breaker or reduced pressure device |
| Fire sprinkler line | Standing water in the sprinkler pipes is not drinkable | Double check or reduced pressure device |
| Pool or spa fill line | Pool water must not return to the supply | An air gap or a check device |
| Commercial water service | Equipment and processes can contaminate the supply | A device chosen by the water district's rules |
| Outdoor hose bib | A hose left in a bucket or a pool can siphon back | A hose bib vacuum breaker |
If you have an irrigation system, there is a good chance a backflow device sits near the meter or the sprinkler valves. It often looks like an angled pipe assembly with test ports and ball valves.
Testing: Why and How Often
Many water suppliers require certain devices to be tested every year, and they notify customers when a test is due. East Bay Municipal Utility District states that failing to comply with its backflow rules can end in discontinued service and fines. Your own district sets its own rules, so check the notice you received.
A test uses a gauge to check that each valve inside the device holds pressure. The tester records the result and the district may need a report. If the device fails, it is repaired or replaced and tested again.
Ask the water district what its rules say and what form it needs. A plumber can then complete the test and the paperwork that fits.
What Happens When It Fails or Needs Replacing
Test and diagnose
The tester checks each valve and records what failed, such as a fouled check or a worn seal.
Repair or replace
A repair kit can fix some failures. A cracked body or a worn-out device is replaced with a unit that meets the district's requirements.
Retest and report
The repaired device is tested again and the results are recorded for the district.
Irrigation leaks near the device can also be the cause of a fouled check. If the valve box is wet or the lawn is soggy, see water line repair and leak detection.
Cost Factors
- Device type and size, since a large reduced pressure device takes more time to test than a small one.
- Number of devices on the property.
- Repair or replacement if a test fails.
- Access to the device, especially if it is in a vault or behind a fence.
- Report filing to the district, if required.
Test notice from the district?
Call and give the device location and the due date on the notice. The plumber will tell you what to expect.
Sources and Standards
Local figures and standards on this page come from these published sources.
Frequently Asked Questions
It is a device that stops water from flowing backward into the clean supply. It is installed where used water could otherwise return.
Many water suppliers require an annual test for certain devices. Your district's notice states the rule that applies to you.
The emergency line is answered 24/7. Backflow testing is normally scheduled, but a leaking or broken device can be handled any hour.
It is repaired or replaced and tested again. The result is then reported to the district.
Most irrigation systems have one. Your district can confirm the rules for your property.
Look near the meter or the first sprinkler valve for an angled pipe assembly with test ports. The plumber can find it for you.
Backflow Test Due? Call Now
Call any hour to schedule backflow testing or repair in Mission Viejo. Have the district notice and the device location ready.
Call (949) 998-2846