Council letter?
Backflow & Compliance
Backflow prevention and TMV testing are annual, accredited jobs — and the certificate has to be lodged with the water authority, not just handed to you. We test, service and certify, and we keep you ahead of the council reminder letter.
Every job, the same way
- 24/7 emergency
- 60-min response
- $0 call-out
- Upfront fixed pricing
- Lifetime workmanship guarantee
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Licensed
NSW Lic. 000000C
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Insured
Public liability to $20M
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Rated
4.9★ · 180+ Google
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Available
24/7 · 60-min response
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Pricing
Upfront & fixed
What we cover
The full job, licensed and certified.
- Backflow prevention device testing
- TMV (tempering valve) testing & service
- Annual compliance certificates lodged with the authority
- Device installation and replacement
- Reminders before your renewal is due
Signs you should call
If any of these sound familiar —
- A letter from council or the water authority
- An annual test that’s overdue
- A new commercial fit-out or food premises
- A device that’s failed or is leaking
How it goes
Call → 60-minute ETA → fixed quote → fixed-price fix → lifetime-backed.
- 1 Step
Call
A real plumber answers — day or night. We triage on the phone and tell you what to turn off while we’re on the way.
- 2 Step
60-minute ETA
An honest arrival time for the Newcastle & Lake Macquarie metro — not “sometime today”.
- 3 Step
Fixed quote on-site
We diagnose the actual problem and quote it in writing before any work starts. $0 call-out.
- 4 Step
Fixed-price fix
You approve the price; we do the work for that price. Compliance certificate supplied where the job requires one.
- 5 Step
Lifetime-backed
Workmanship guaranteed in writing, for life. We register any unit warranty for you at handover.
Proof
4.9★ from 180+ local reviews.
“Hot water died on a Sunday with three kids in the house. Mainline answered, gave me a 60-minute ETA, and had a new unit in by lunch. Knew the price before they started.”
“Burst pipe under the slab at 11pm. They talked me through the mains shut-off on the phone, turned up fast, and the quote was the quote — no surprises on the invoice.”
“Booked them to install a gas cooktop. Proper licence, compliance certificate handed over on the day. The first plumber who actually explained what I was paying for.”
Common questions
Backflow & Compliance — answered.
I got a letter from council or the water authority — what is it?
Almost certainly a reminder that your backflow prevention device or tempering valve is due for its annual test. It’s a legal requirement, and the test has to be done by an accredited person and lodged with the authority. We handle the whole thing.
What is a backflow prevention device and why must it be tested?
It stops contaminated water from being drawn back into the drinking supply. Because lives depend on it working, the law requires an accredited annual test — we test, service and certify it, and lodge the paperwork.
What’s a TMV, and does mine need testing too?
A tempering (thermostatic mixing) valve limits hot water temperature to prevent scalding — common in homes and required in many commercial and care settings. It needs periodic testing and servicing, which we carry out alongside backflow testing.
Do you lodge the certificate, or just give it to me?
We lodge it with the water authority on your behalf — not just hand you a piece of paper. That’s the part that actually satisfies the requirement, and it’s the part some operators quietly skip.
How often is testing required?
Annually for backflow devices. We can put you on a reminder so the next one’s booked before the council letter arrives, not after.
What happens if my device fails the test?
We’ll quote the repair or replacement, carry it out, and re-test so you end up compliant — all explained before any work goes ahead.
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Call now, or get a fixed-price quote.
24/7 across Newcastle & Lake Macquarie, NSW. 60-minute response, $0 call-out, upfront fixed pricing, lifetime workmanship guarantee.
(02) 4900 0000Tell us what’s going on