Frequently Asked Questions About Irrigation Systems
Answers to the most common questions South Jersey homeowners ask about sprinkler system installation, repair, winterization, and maintenance.
Sprinkler System Installation
A new residential sprinkler system installation in New Jersey typically costs between $3,000 and $7,000, depending on your lot size, the number of zones needed, soil conditions, and the type of equipment selected. Factors that increase cost include rocky or clay-heavy soil (common in parts of South Jersey), slopes requiring specialized head placement, and the addition of smart irrigation controllers or drip irrigation zones.
Larger residential properties and commercial installations typically range higher. At Irrigation Innovations, we provide free, detailed estimates after conducting an on-site assessment, so you know exactly what your project will cost before any work begins. We install exclusively professional-grade Hunter sprinkler products, which cost more upfront but last significantly longer than consumer-grade alternatives from big-box stores.
The best time to install a sprinkler system in South Jersey is during spring (April through June) or early fall (September through October). Spring installations give your new system the entire growing season to establish optimal lawn health, while fall installations allow the ground to settle before winter and set you up for an easy spring start-up.
We install systems year-round when weather permits, but spring is our busiest season, so scheduling early is recommended. The ideal approach is to get your free estimate in late winter or early spring and schedule installation for when the ground thaws and dries out sufficiently for trenching.
Most residential sprinkler system installations take 1 to 3 days to complete. A standard quarter-acre residential property with 4 to 6 zones typically takes about 1 to 2 days. Larger properties, homes with extensive landscaping, or commercial installations may take 3 to 5 days or longer depending on the scope of the project.
We use professional Ditch Witch trenching equipment that allows us to install underground piping efficiently while minimizing disruption to your existing lawn and landscape. After the installation, we take care to restore your yard as close to its original condition as possible. Within a few weeks of regular watering, trench lines typically fill in and become invisible.
While DIY sprinkler kits are available at home improvement stores, there are several reasons to hire a licensed professional in New Jersey. First, NJ state law requires irrigation contractors to be licensed. This requirement exists because improper installation can waste water, damage your property, and create cross-contamination risks with your drinking water supply (backflow prevention is critical).
Professional installations include proper system design based on water pressure, soil type, and sun exposure, which ensures even coverage and prevents dry spots or overwatering. Consumer-grade products from big-box retailers generally lack the durability of professional-grade Hunter equipment. Our installations come with a 5-year warranty, and our systems are designed to last 15 to 20 years or more with proper maintenance.
Permit requirements vary by municipality in New Jersey. Some towns require a plumbing permit for irrigation system connections to the municipal water supply, while others do not. Backflow preventer installation and testing is generally required by local water utilities regardless of permit requirements. As a licensed NJ irrigation contractor, we are familiar with the requirements in each of the 7 counties we serve and handle all necessary permitting as part of the installation process.
Sprinkler System Repairs
The most common causes of sprinkler system failure include broken or clogged sprinkler heads (frequently damaged by lawn mowers), leaking zone valves, cracked PVC pipes from freeze damage or ground settling, and electrical issues with the controller or valve wiring. Clogged nozzles from dirt and debris are also common, particularly after spring start-up when sediment may have accumulated over winter.
Many of these issues can be caught early through regular system maintenance. Signs your system needs repair include uneven watering patterns, unusually high water bills, pooling water in your yard, zones that will not turn on, or sprinkler heads that do not pop up or rotate properly.
Sprinkler system repair costs vary depending on the type and extent of the problem. Simple repairs like replacing a broken sprinkler head typically cost $75 to $150, while more involved repairs such as fixing a leaking valve or repairing a cracked pipe may range from $150 to $400 or more. Controller replacements and electrical troubleshooting fall in a similar range.
At Irrigation Innovations, most repairs we perform are backed by our 5-year guarantee when the system is maintained through the warranty period. We diagnose the problem accurately before beginning any work, so you always know what to expect before we start the repair.
In most cases, standard homeowners insurance does not cover sprinkler system repairs caused by normal wear and tear, aging components, or lack of maintenance. However, damage from sudden, accidental events may be covered. For example, if an unexpected early freeze causes a pipe burst because you were not able to winterize in time, some policies may cover the resulting damage.
We recommend reviewing your specific policy with your insurance provider. The most effective way to prevent costly repairs is proactive maintenance and timely winterization before each cold season.
If you notice water pooling in your yard, a sudden spike in your water bill, or hissing sounds near your irrigation lines, you should call a licensed irrigation contractor as soon as possible. Leaks waste water, can erode soil, and may cause damage to your foundation or landscape if left unaddressed.
As a first step, turn off your irrigation controller to stop the system from running. If the leak appears to be at the main water supply or backflow preventer, you may also want to shut off the irrigation water supply valve. Then contact Irrigation Innovations at (856) 716-1193 for a prompt repair assessment.
Irrigation Winterization
In New Jersey, you should winterize your sprinkler system between mid-October and mid-November, before the first hard freeze of the season. South Jersey's first frost typically arrives in late October or early November, though exact timing varies by year and microclimate. It is better to winterize a few weeks early than to risk freeze damage from an unexpected cold snap.
Fall is our busiest season for winterization service, and appointment slots fill quickly starting in September. We recommend scheduling your blowout by early October to ensure availability. Contact us to book your appointment.
Professional irrigation winterization in New Jersey typically costs between $75 and $200, depending on the number of zones in your system and the size of your property. Systems with more zones require more time to blow out each zone individually with compressed air. Our winterization pricing is based on zone count, so you know the cost upfront when you schedule.
This is one of the most cost-effective maintenance investments you can make. A single cracked pipe or broken valve from freeze damage can easily cost $200 to $500 or more to repair in the spring, making the winterization service significantly less expensive than the alternative.
Yes. In New Jersey, winterization is essential for any in-ground irrigation system. Water remaining in your pipes, valves, fittings, and sprinkler heads will freeze and expand when temperatures drop below 32 degrees Fahrenheit. This expansion cracks PVC pipes, damages diaphragms inside valves, and breaks sprinkler body housings. The resulting repairs can be expensive and often are not apparent until you turn the system on in spring.
Some homeowners assume they can simply drain their system by opening the lowest valve, but gravity drainage alone rarely removes all water from the lines. Professional winterization uses compressed air to force water out of every zone, including low spots and dead-end lines that gravity cannot reach.
Water freezes at 32 degrees Fahrenheit (0 degrees Celsius), so yes, sprinkler system components are at risk at 29 degrees. However, the ground provides some insulation for buried pipes, and the actual risk depends on how long temperatures remain below freezing, how deep your pipes are buried, and whether there is water sitting in the lines.
A brief overnight dip to 29 degrees may not cause damage to buried mainlines, but above-ground components like backflow preventers, sprinkler heads near the surface, and valve boxes are more vulnerable. Multiple consecutive nights below freezing significantly increase the risk. The safest approach is to have your system winterized before temperatures consistently drop into the low 30s.
While it is technically possible to winterize your own irrigation system, we do not recommend it for most homeowners. Proper winterization requires an air compressor capable of producing 80 to 100 PSI with sufficient cubic feet per minute (CFM) to clear each zone. Small shop compressors typically lack the volume needed and must cycle repeatedly, extending the process and often leaving water in the lines.
There is also a risk of over-pressurizing the system, which can damage PVC pipes, fittings, and sprinkler heads. Professional irrigation technicians know the correct pressure settings for different pipe sizes and materials, and they blow out each zone methodically to ensure complete drainage. Given that professional winterization typically costs $75 to $200, the cost of doing it yourself (compressor rental, time, and risk of damage) often is not worth the savings.
Watering & Maintenance
Daily watering is generally not recommended for most South Jersey lawns. Watering too frequently promotes shallow root growth, making your grass more vulnerable to heat stress and drought. Most established lawns perform best with 2 to 3 deep watering sessions per week, delivering about 1 to 1.5 inches of water total.
The optimal watering schedule depends on your soil type, grass species, sun exposure, and time of year. Sandy soils (common in parts of Atlantic and Cape May counties) drain faster and may need more frequent, shorter sessions. Clay soils retain moisture longer. A smart irrigation controller can automatically adjust your schedule based on weather conditions and soil moisture, taking the guesswork out of lawn watering.
Not necessarily. In South Jersey, cool-season grasses (like fescue and bluegrass, which are most common in our area) continue growing into late October and benefit from moisture as they prepare for winter dormancy. The general guideline is to continue watering until nighttime temperatures consistently drop below 40 degrees Fahrenheit, or until the ground begins to freeze.
However, you should reduce watering frequency as temperatures cool and evaporation slows. Typically, by mid-to-late October, your lawn only needs watering once per week if rainfall is insufficient. Be sure to schedule your winterization before the first hard freeze, which usually arrives in late October or November in our area.
We recommend professional maintenance at least twice per year: a spring start-up and a fall winterization. During the spring start-up, we inspect every zone, check for winter damage, adjust heads for proper coverage, and program your controller. During fall winterization, we blow out all zones with compressed air to prevent freeze damage.
For optimal performance, a mid-season checkup in July or August can catch problems like clogged nozzles, misaligned heads, or coverage gaps that develop during the heavy-use summer months. Our maintenance plans offer flexible options to fit your budget and keep your system running efficiently year after year. Regular maintenance also keeps your 5-year warranty active on systems we installed or repaired.