Spring in Lockport means you are getting your irrigation system ready, but it can also bring an unexpected snag: an RPZ test notice. If you have sprinklers, there is a good chance you are required to test your RPZ before you turn the water on. It can feel confusing if you have not handled it before. In this guide, you will learn what an RPZ is, who can test it, what paperwork you need, where to submit results, and a simple checklist to stay compliant. Let’s dive in.
What an RPZ is and why it matters
An RPZ, or reduced pressure zone backflow preventer, is a mechanical device that keeps contaminated water from flowing back into the drinking water system. Irrigation lines can contain fertilizers, pesticides, and stagnant water. Without a working RPZ, that water can siphon into the public supply.
Annual testing confirms the RPZ’s internal parts are working, including the relief valve, check valves, and pressure differentials. Many communities require a current passing test on file before seasonal activation in spring. This protects your family, your neighborhood, and the municipal water system.
Lockport rules at a glance
While specific procedures can vary, homeowners in Lockport and Will County should plan for these common requirements:
- Annual testing of the RPZ or backflow assembly on each irrigation system.
- A current passing test on file before the irrigation system is activated for the season.
- Enforcement and record keeping handled by the City’s Water or Public Works Department. Some county divisions may provide guidance or oversight in certain cases.
- Utilities maintain a database of assemblies and test reports for each address.
Always confirm current requirements with the City of Lockport Public Works or Water Department and Will County environmental or public health authorities before you schedule testing or submit paperwork.
Who can test your RPZ
Only a certified backflow prevention assembly tester should perform the test. In practice, this is often a licensed plumber or irrigation contractor who holds a recognized backflow certification and carries insurance.
When you hire a tester, ask for:
- Certification number and proof of current certification.
- Proof of insurance.
- Confirmation that their test gauge is calibrated within the required time frame.
If the assembly fails, repairs must be performed by a qualified technician, then the device must be retested. If a device is replaced, expect to test the new assembly before it is put in service. Some jurisdictions require a permit for replacement. Confirm this before any work begins.
What your test report must include
A complete, compliant test report typically includes:
- Owner name and service address.
- Date of test and assembly location on the property.
- Assembly type, model, and serial number.
- Measured results for each internal component with pass or fail status.
- Repairs performed and parts replaced, with final passing results after repair.
- Tester’s printed name, signature, certification number, and contact information.
- Test gauge calibration date or certificate.
- Tester’s company name and, if requested, proof of insurance.
Keep a copy for your records. Many utilities request electronic PDFs, but paper copies are still used in some cases.
When to schedule your test
Plan ahead so you are not stuck waiting when spring arrives. A practical timeline looks like this:
- January to March: Confirm whether your property has an RPZ on the irrigation line. Check last year’s test date and identify the device location.
- Early March: Schedule a certified backflow test. Booking early leaves time for repairs and re‑tests before activation.
- Immediately after the test: Review the report for completeness, ask questions about any repairs, and request a copy for your records.
Do not activate your system until you are sure the passing test has been filed and accepted by the appropriate authority.
How and where to submit in Lockport
Submission processes vary by utility. In many Illinois communities, you will see one or more of the following options:
- Electronic upload through a municipal utility portal.
- Email submission to a designated backflow program coordinator.
- Mailed or hand‑delivered paper copies to Public Works or the Water Department.
- Direct submission by your tester through a professional portal.
Before you submit, contact the City of Lockport Public Works or Water Department to verify:
- If annual RPZ testing is required for your address and whether a current test is needed before spring activation.
- The exact submission method and whether a specific form is required.
- The name, phone, and email of the backflow program coordinator.
- Any deadlines, penalties for late filing, and how enforcement works.
- Whether the City provides a list of certified testers or an approved form template.
If your home is on a private or HOA‑managed water system, ask your HOA or property manager where reports are filed and who is responsible for submitting them.
Homeowner step‑by‑step checklist
Follow these steps to stay on schedule and avoid fines or delays:
- Confirm equipment
- Locate your RPZ, note the model and serial number, and check the last test date.
- Hire a certified tester
- Request their certification number, proof of insurance, and gauge calibration documentation.
- Schedule early
- Aim for early spring or earlier so repairs and retesting can be completed before activation.
- Review the report
- Make sure all fields are complete, including pressures, pass or fail results, and any repairs.
- Submit and confirm
- File the report in the format your utility requires and confirm receipt and acceptance.
- Activate only after approval
- Turn on the irrigation system once a passing test is on file and accepted.
HOA and property manager playbook
If you manage common areas or multiple units, structure your process:
- Maintain a master inventory of assemblies with addresses, serial numbers, and last test dates.
- Contract with one or more certified testers before peak season to secure scheduling.
- Budget for annual testing plus a contingency for repairs or replacements.
- Keep digital records organized by address and back them up offsite.
- Decide who submits reports and how confirmation of acceptance is documented.
HOAs that miss testing deadlines can face fines or restrictions until compliance is documented. Clear roles and early scheduling help avoid headaches.
Costs, repairs, and retesting
Test‑only fees are commonly modest and often fall in the low to mid hundreds of dollars for a single residential assembly. Pricing varies by device type, access, and local market conditions. Repairs can range from minor parts to full assembly replacement, which is more costly.
Ask your tester for an itemized estimate in advance. If repairs are needed, ensure a follow‑up passing test is documented and submitted.
Avoid common mistakes
- Waiting until the first warm weekend to schedule testing. Spring is the busiest season and appointments can be limited.
- Activating irrigation before a passing test is on file. Many utilities prohibit activation and may assess fines or require shutdown until you comply.
- Submitting incomplete forms. Missing serial numbers, calibration dates, or signatures can delay acceptance.
- Not keeping your own records. Store PDFs and receipts by year so renewals are easy.
Final thoughts
Annual RPZ testing protects your household and your neighborhood’s drinking water. With a certified tester, a complete report, and timely submission, you can turn on your sprinklers with confidence. A simple plan each spring keeps you compliant and avoids fines or last‑minute setbacks.
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FAQs
Do Lockport homes need an RPZ test every year?
- Yes. Communities in Will County commonly require annual testing to protect the public water system. Confirm the current policy with the City of Lockport before activation.
Who is allowed to test my irrigation RPZ in Lockport?
- A certified backflow prevention assembly tester, often a licensed plumber or irrigation contractor with backflow certification and insurance.
Where do I send my RPZ test results for a Lockport address?
- Submit to the City of Lockport Water or Public Works Department as instructed by the utility. Ask for the correct form, email or portal, and the backflow coordinator’s contact.
What happens if my RPZ fails the test?
- A qualified technician must complete repairs and the device must be retested. Utilities can prohibit activation and may issue fines or restrictions until a passing test is on file.
Can I turn on my sprinklers before the passing test is filed?
- Avoid activating before your passing test is submitted and accepted. Many utilities prohibit activation or may require immediate shutdown until you comply.
What should be on a compliant RPZ test report?
- Owner and address, test date and device location, device type and serial number, measured results with pass or fail status, any repairs, tester information and signature, and gauge calibration date.
