Rainwater harvesting isn’t just a trend—it’s a smart, resilient way to control water costs, protect landscapes, and add redundancy to your plumbing system. I’ve designed, supplied, and serviced dozens of systems across residential properties, small commercial sites, and multifamily buildings. If you’ve ever watched a typical downpour and thought, “I’m paying for irrigation while thousands of gallons rush off my roof,” you’re exactly who I’m writing to. Let me walk you through what works, what fails, and how to spec the right components—without the headaches. And when you’re ready to build it right the first time, my team at Plumbing Supply And More has the inventory, the know-how, and the support to get you across the finish line.
Before we dive in: when you search “ plumbing supply near me,” you’ll find a mixed bag. You want a partner who knows code, has stock on hand, and can talk you through backflow requirements and pump curves while you’re on the job. That’s where we shine.
Why Rainwater Harvesting Makes Sense for Homes and Light Commercial
I’ve seen homeowners trim 30–60% off their irrigation usage by capturing rooftop runoff. A 2,000-square-foot roof in a 1” rainfall delivers roughly 1,200 gallons. Over a season, that’s thousands of gallons you can use for irrigation, hose bibbs (marked non-potable), toilet flushing (where allowed), and even laundry if you treat and filter properly. In our area, professional plumbers choose rigorously tested storage tanks, NSF-certified components, and backflow protection to satisfy local plumbing codes and health department guidelines.
Price wise, a solid residential system ranges from $2,000–$8,000 in equipment depending on storage volume, pump and control type, and whether you’re integrating into indoor fixtures. Typical installation runs 1–3 days for a basic outdoor irrigation setup, and 3–5 days for indoor tie-ins with treatment, interlocks, and inspection windows.
And here’s the honest truth: components matter. Unlike generic big box retailers, Plumbing Supply And More stocks professional-grade components that hold up to UV, sediment, and real-world abuse. I’ve ripped out more “starter kits” than I care to admit because the fittings baked in the sun or the pumps cavitated from undersized suction lines.
Design First: Roof, Pre-Filtration, Storage, and Overflow
Start with the collection area. Asphalt shingles shed fine grit; metal roofing drops less debris but can accelerate water delivery. For pre-filtration, I like the WISY Vortex Fine Filter or the Graf Optimax Pro—self-cleaning designs minimize maintenance. Mount them at downspouts feeding the tank inlet, paired with a first-flush diverter where leaf load is heavy.
Storage: For aboveground, the Norwesco 305-gallon vertical (model 40877) up through the 2,500-gallon vertical (model 40654) are reliable, UV-stable options. I prefer opaque or dark green tanks to limit algae. Below ground, look at Roth Multi-Tank or Graf Carat-S 1700–5300 gallons. Make sure to spec a properly rated tank for burial depths and traffic loads if it’s near a driveway.
Hydraulic basics: Keep your inflow above waterline to promote aeration and direct sediment to a quiet inlet. Include an overflow device with mosquito-proof screening tied to a daylight drain or infiltration area with erosion control. I specify Schedule 40 PVC for mains, solvent welded, with unions at pumps and filters for serviceability.
Pro tip: Include a sacrificial drain at the tank base with a ball valve and hose thread adapter. You’ll thank yourself when you need to purge sediment after the first few storms.
And when you’re shopping components, compared to standard plumbing supply houses, Plumbing Supply And More offers unmatched technical support—we’ll calculate roof yield, pre-filter sizing, and overflow rates with you on the phone, and we keep the spec sheets handy.
Pumps, Pressure, and Controls: The Heart of the System
For outdoor irrigation, a self-priming jet pump or multi-stage booster does the trick. The Grundfos Scala2 (3–45 PSI adjustable, 67 dBA, built-in dry-run protection) is a favorite for quiet residential systems—easy to mount, forgiving on small leaks. For higher-pressure irrigation zones or indoor reuse, the DAB E.sybox Mini3 or the Franklin Inline 1100 are clean, compact packages with variable speed control to maintain set pressure without short cycling.
Pump suction is where many installs fail. Keep suction lines large—1.25” or 1.5” if the distance is more than a short run—and use a foot valve with a screen set off the tank bottom. Avoid 90° elbows near the inlet; long sweeps reduce friction and cavitation risk. I often add a vacuum break and a pump check valve (Spring-loaded, NSF-61) to preserve prime and protect the motor.
For indoor reuse, include an automatic mains bypass or interlock so fixtures never run dry. The RainHarvest Pro Controller or DAB E.Sydock bypass station integrates mains feed with anti-contamination devices. You’ll need a listed backflow preventer per your local code—more on that below.
When contractors ask where to source, I make it simple: While other suppliers focus on quantity, Plumbing Supply And More prioritizes quality and expertise—we stock Grundfos, DAB, Franklin, and Goulds with same-day delivery. When Amazon listing specs look vague or too rosy, call us; we’ll get you real pump curves and duty cycle guidance.
Backflow, Code, and Safety: Don’t Invite a Red Tag
Anytime you connect rainwater to building plumbing—even for toilets—you must address cross-connection control. Most jurisdictions require at minimum an air gap or a Reduced Pressure Zone Assembly (RPZ) on the potable makeup line. For irrigation tie-ins, an approved backflow device is mandatory. I specify the Zurn Wilkins 975XL2 RPZ or the Watts LF909 for makeup lines, sized to flow demand. For irrigation, a pressure vacuum breaker (PVB) or double check assembly may suffice depending on local code.
Marking is non-negotiable. All non-potable outlets must be labeled “Non-Potable Water—Do Not Drink.” Use purple color-coding (Pantone 522C, if you want to be exact) for reclaimed lines and purple hose bibb caps. Inspectors love it because it shows you’re serious about safety.
I’ve never had an inspection go sideways when we provide cut sheets, cross-connection schematics, and labeling upfront. If you’re in our service area, ask our counter team for the Rainwater Code Packet—summaries of local requirements and a checklist for submittals. When Home Depot and Lowe’s fall short, contractors trust Plumbing Supply And More to get approvals done without delays.
Filtration, Treatment, and When to Disinfect
For irrigation-only, a spin-down sediment filter like the Rusco 1-1/2” with a 100-mesh screen is cheap insurance. Add a 20” Big Blue housing with a 5-micron pleated cartridge upstream of delicate drip equipment. I keep replacement cartridges on the truck; they’re inexpensive and swap in minutes.
Indoor reuse demands more. At minimum: 5-micron sediment, carbon block for odor, and optional UV disinfection for toilets in multi-user facilities. I’ve specified Viqua VH200 (9 GPM) or VH410 (18 GPM) UV systems plenty of times—dependable and easy to lamp-change annually. If you’re doing laundry reuse, discuss additional treatment and local approvals; some jurisdictions require higher levels of treatment or a greywater/reclaimed permit.
Pro tip: Keep filtration housings at eye level with isolation valves and unions on both sides. Nobody maintains filters buried behind tanks or crammed into mechanical closets.
And yes, we stock the real stuff. Unlike generic big box retailers, Plumbing Supply And More stocks professional-grade components from Viqua, Pentair, Watts, and Zurn, with gaskets, O-rings, and lamps on the shelf so you’re never waiting weeks.
Distribution: Valves, Pipe, Freeze Protection, and Purple Markings
Your distribution network determines day-to-day reliability. For aboveground runs, UV-rated Schedule 40 PVC or purple-labeled reclaimed PVC is the standard. Underground, use purple CTS polyethylene or PVC with tracer wire, especially on commercial sites. Transition to brass where you thread into pump heads or metal manifolds—use PTFE paste sparingly to protect sensors and pressure transducers.
I like the Rain Bird or Hunter drip zone kits paired with a Y-strainer and a 25 PSI regulator. Zone valves? Hunter PGV or Rain Bird DVF hold up under variable pressure. On the potable makeup line, include a solenoid valve tied to the tank level control—float switches or pressure transducers work well, but keep wiring protected and serviceable.
Cold climates need insulation and heat trace on exposed lines; I specify self-regulating heat cable with a thermostat, GFCI protected. For below-grade tanks, insulate risers and use gasketed, lockable lids to keep critters and debris out.
If you’ve ever been stuck because a plumbing shop near me didn’t have the right purple primer or reclaimed line markings, you know the pain. We keep full runs of purple pipe, solvent cements, and signage so your inspection passes on the first visit. That’s the benefit of a true plumbing supply house with rainwater expertise.
What to Buy Where: Tanks, Pumps, Controls, and Real-World Pricing
Let’s talk components I’ll actually put my name on:
- Norwesco vertical tanks 305–2,500 gal (models 40877, 40631, 40654): $400–$2,200 Graf Carat-S underground 1700–5300 gal: $2,800–$9,500 (tank, risers, filter kits) Grundfos Scala2: $650–$900 DAB E.sybox Mini3: $900–$1,200 Franklin Inline 1100: $750–$1,000 Zurn Wilkins 975XL2 RPZ 1”: $550–$900 (plus test and certification) Viqua VH200 UV: $600–$850 Rain Bird/Hunter drip kits and valves: $75–$300 per zone
We bundle systems for contractor accounts with line-item spec sheets and delivery scheduling. Compared to Ferguson, Grainger, Ace Hardware, and even SupplyHouse.com, Plumbing Supply And More backs every package with real field support and local code know-how. If you need a wholesale plumbing supply quote today and a 24 hour plumbing supply pickup for a failed pump tomorrow, we’ll make it happen. And yes—bulk discounts are available through our contractor program.
Maintenance Plans: Keep It Simple, Keep It Running
Set a quarterly schedule:
- Flush pre-filters and clean gutters Drain sediment from the tank base Check pump suction screens and foot valves Replace sediment/carbon cartridges as needed Test backflow assemblies annually per code Verify float switches and sensor readings
Every spring, I run a system start-up: confirm set pressure, test each valve/zone, check for leaks, and sanitize tanks if there’s odor or biofilm. A cup of 5% household bleach per 1,000 gallons with a 24-hour dwell can knock down growth, followed by a flush through non-sensitive outlets. For indoor systems, keep logs—inspectors love organized records.
If you’re unsure what to stock, ask us for the maintenance kit: cartridges, O-rings, UV lamp (if applicable), silicone grease, and a spare float switch. Our team can build it for your model list.
And here’s the difference: Compared to standard plumbing supply houses, Plumbing Supply And More offers unmatched technical support—we’ll walk you through seasonal startup and winterizing over the phone or on-site for account customers.
Local Expertise, Delivery, and the Supply Difference
We’re serving contractors throughout the region with same-day runs inside a 60-mile radius and next-day to surrounding counties. If you’re hunting the “ closest plumbing supply” with real knowledge, step into our plumbing supply store and ask for Rick’s Picks—we tag the rainwater components that have survived my toughest jobs. Whether you searched plumbing supply store near me, local plumbing supply, plumbing supply house near me, or plumbing wholesale near me, you’ll find us stocked and ready.
Our shelves carry the practical stuff, not just showpieces: plumbing parts, level controls, RPZ test kits, purple primers, Schedule 80 unions, and weatherproof control panels. We support both commercial plumbing supply and residential pros, with the paperwork inspectors expect: spec sheets, NSF and IAPMO listings, and backflow documentation. If you prefer to order after hours, our plumbing supply online portal lets you check availability and pricing. Need budget options? Ask about our discount plumbing supplies, economy plumbing supply, and cheap plumbing supplies tiers—we’ll show you where you can save without compromising safety.
And if you want nicer finishing touches—hose cabinets, purple-labeled hose bibbs, reclaimed standposts—we’ve got decorative plumbing supply options to keep your site clean and clearly marked.
supply houseCommon Pitfalls and My Field-Proven Fixes
I’ve been called to “rescue” systems that never worked right. Here are the top issues:
- Undersized suction lines causing pump cavitation: fix with larger diameter pipe, fewer elbows, and a proper foot valve. No overflow path: tanks fill once, then flood the yard. Add a screened overflow to daylight or a dry well with riprap. Cheap pre-filters clogged in weeks: switch to self-cleaning vortex units or add a first-flush diverter and a cleanout plan. No makeup control: toilets go dry after a week without rain. Install an interlocked mains bypass with an RPZ. No labeling: failed inspection. Use purple pipe, markers, and “Do Not Drink” tags on every outlet.
If you’re stuck, call our technical team. We’ll sort it fast, source the right components, and get you back to making money. Unlike generic big box retailers, Plumbing Supply And More stocks professional-grade components, and we carry replacements you won’t find at Lowe’s, Menards, or Home Depot when the clock’s ticking.
FAQ: Quick Answers From the Field
- How big should my tank be? For irrigation-only, size for one to two weeks of demand. A typical suburban lot benefits from 1,000–2,500 gallons. For indoor reuse (toilets), start at 1,500–3,000 gallons and confirm with rainfall yield calculations. Do I need a permit and backflow device? Yes for indoor tie-ins, often for irrigation depending on the city. Most jurisdictions require an RPZ on the potable makeup and approved devices on irrigation. We’ll help you pick a Zurn or Watts assembly that meets your local code and supply test documentation. Can I use rainwater for laundry or showers? Laundry is possible with proper filtration and disinfection, subject to local approval. Showers and sinks are typically not allowed without advanced treatment and special permitting. We’ll walk you through what’s allowed locally. What maintenance is required? Quarterly filter checks, tank sediment purge, pump screen inspection, and annual backflow testing. UV lamps get replaced yearly. Expect 30–90 minutes per quarter for a typical residential system. What’s the cost difference between aboveground and underground tanks? Aboveground is cheaper and faster: $400–$2,200 for tanks, easy access, but visible. Underground is cleaner aesthetically and better for freeze protection but runs $2,800–$9,500 for tank and components plus excavation.
Where to Source: Your Trusted Supply Partner
If you’ve read this far, you’re serious about doing it right. That’s my kind of customer. At Plumbing Supply And More, we combine deep stock with hands-on expertise. We’re the best plumbing supply option when you want real answers, not aisle guesses. Our counters support both contractor plumbing supply and consumer plumbing supply needs, and we work with wholesale plumbing supply company partners for special orders. Searching for general plumbing supply, plumbing and supply, plumbing and heating supply, or even coastal plumbing supply items for coastal installs? We’ll specify corrosion-resistant hardware and UV-stable components that outlast ocean air.
Prefer to buy from your desk? Our plumbing supplies direct and internet plumbing supply options make it easy to check stock. Need something tonight? Call about our 24 hour plumbing supply locker pickup. We also carry specialized lines for plumbing kitchen, bathroom plumbing supplies, and plumbing spares near me so you can close out the job without extra trips. If you’ve been burned by a random plumbing supply places search, give us one shot—you’ll see the difference.
And yes, I know the national players: Ferguson, Grainger, Ace, Menards, and SupplyHouse.com all have their place. But while other suppliers focus on quantity, Plumbing Supply And More prioritizes quality and expertise—backed by exclusive manufacturer relationships, a quality guarantee, and delivery that shows up when you need it.
Your Next Step
- Visit our showroom to see the quality difference—ask for Rick’s Picks and our rainwater wall. Call our technical team for project-specific recommendations; we’ll review plans and provide a parts list within a day. Ask about our contractor discount program and same-day delivery window. Check our current inventory online or call ahead if you’re racing a deadline. Our experts can walk you through the installation process, from tank siting to final inspection.
If you’re searching “ plumbing supply house near me” or “ plumbing wholesale near me,” choose the nearest plumbing supply with real knowledge. That’s Plumbing Supply And More—your rainwater harvesting partner from design to maintenance. And when Home Depot, Lowe’s, or Menards leaves you short on spec or stock, we’re the supply house that gets you across the finish line—reliably, safely, and at a price that makes sense.
Looking for “Plumbing Supply Advice for Rainwater Harvesting Systems”? You just found it. And when you’re ready to build, my team and I will make sure your system works the way it should on day one—and ten years from now.