01 Garden-only setup · €1,200-€2,000
Above-ground 1,500L tank, first-flush diverter, gravity feed to garden tap. The most popular setup. 2-3 hours to install if the gutter access is straightforward.
Limerick & Clare · 20+ Years · 4.8★ on Google
Rainwater Harvesting Systems for Irish Homes
Tank sizing, gutter integration, garden and household feeds - capture the 100,000+ litres your Irish roof catches every year. Designed and installed across Limerick & Clare.
Free quote · no obligation From €1,200 · garden setup fitted
- Rainwater Harvesting across Limerick & Clare
- Vacuum-cleaned from the ground - no ladder marks
- 4.8★ from 30+ Google reviews
- 20-year workmanship guarantee · fully insured
20+ years of experience
Limerick & Clare Local Expertise
24/7 Emergency Service
Satisfaction Guarantee
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CIF Member
Construction Industry Federation
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Safe Pass
Whole crew certified
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Working at Heights
Ladder + reach safety certified
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Free Quote · No Obligation
Written quote sent same day
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20-Year Workmanship Guarantee
In writing on every install
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4.8★ on Google
30+ verified reviews
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20+ Years Experience
Master gutter installer on every job
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Limerick & Clare Based
Dooradoyle HQ · local crew
All certificates and insurance documents available on request before any work starts.
Rainwater Harvesting · Limerick & Clare
Rainwater harvesting systems for Irish homes - tank sizing, gutter integration, garden and greywater feeds designed for Ireland's 1,000mm+ annual rainfall.
Ireland gets more rain per year than most of England. A standard 120m² roof catches about 120,000 litres of water annually that currently runs straight into the drain. A rainwater harvesting system captures it and re-uses it for the garden, toilet flushing, washing machine, or just a backup supply.
For most Irish homes a 1,500-3,000 litre tank with first-flush diverter, filter and pump is the right size - enough to cover the garden through summer dry spells without taking over the back patio. Bigger 5,000+ litre setups make sense for self-sufficient builds and properties on private wells.
We size every system based on roof area + tank size + intended use. There's no single right answer - just the right answer for your house.
01 
02 Below-ground household feed · €4,500-€7,500
Below-ground 3,000-5,000L tank with pump, filter, and feed into toilets + washing machine. Significant water-bill saving + drought resilience.
03 Self-sufficient new builds · €8,000+
Full-spec system with UV sterilisation, mains backup, and integration into household plumbing. Right call for off-grid or A-rated builds with no public water supply.
04 Calculate-your-capacity tool
Roof area × annual rainfall × catchment efficiency. We do the calc on the survey - or use our online calculator to estimate before booking.
What's included
Every rainwater harvesting job comes with all this
- Roof-area + capacity calculation
- Tank sourcing (above or below ground)
- First-flush diverter + filtration
- Pump and pressure controls (where needed)
- Integration with existing gutters + downpipes
- 5-year workmanship guarantee on the system
Free quote
Sent same day
our testimonials Rated 4.8 based on 30+ reviews
What Limerick & Clare homeowners say
5.0
Had a such a great experience with this company. We needed new gutters and they did a fantastic job - took down the old ones and installed fresh brand new. Tidy crew, fair price, and the job came in exactly when they said it would.
Mike O'Brien
Castletroy, Limerick · 2 weeks ago
5.0
William and the team came out the morning after I rang - water was pouring down the back wall after the storm. Identified the cracked downpipe, replaced it, and rehung two saggy runs while they were up. Honest pricing and no upsell.
Sarah Kennedy
Caherdavin, Limerick · 1 month ago
5.0
Booked them for a full gutter replacement on a 1990s semi. Seamless aluminium - looks fantastic and you would never know there was ever a join. Lads were polite, cleaned up after themselves, and stuck to the quoted price.
Emma Walsh
Dooradoyle, Limerick · 6 weeks ago
5.0
Three other companies ghosted me on a quote. William turned up the next day, took photos, sent the quote that evening, and started the work that Friday. Cleaned out 18 years of leaves and gunk - genuinely could not believe how much they pulled out.
Liam Ryan
Ennis, Co. Clare · 2 months ago
5.0
Used them for the autumn gutter clean and a small repair on the fascia where the bracket had pulled out. Reasonable price, on time, and they took photos before/after so you could see the job actually got done. Will be using again next year.
Niamh Kelly
Raheen, Limerick · 3 months ago
5.0
Brilliant from start to finish. Old cast-iron downpipes on a listed Adare cottage - most installers would not touch it. William did the survey himself, sourced matching profiles, and the finish is exactly what we wanted. Highly recommend.
Patrick Burke
Adare, Co. Limerick · 4 months ago
FAQs · Rainwater Harvesting
Common questions
How much does a rainwater harvesting system cost in Ireland?
A garden-only setup with above-ground 1,500L tank is €1,200-€2,000 fitted. Below-ground household feeds (toilets + washing machine) run €4,500-€7,500. Self-sufficient systems with UV + mains backup start at €8,000.
How much rainwater can my roof actually catch?
Roof area in m² × 1,000mm Irish rainfall × 80% efficiency = annual yield in litres. So a 120m² roof catches roughly 96,000L per year. That covers a typical garden + 30-50% of toilet/washing-machine demand.
Will rainwater harvesting save me money?
Depends. If you're on a public water supply, the savings are modest (Irish Water charges are low). If you're on a private well or septic system, the savings + reliability gain is substantial. Most customers do it for the resilience + sustainability rather than pure ROI.
Can I drink the water?
Not without proper UV sterilisation + filtration. The system we fit for "potable" use includes UV sterilisation. Garden-only systems are not designed for drinking.
Looking for rainwater harvesting in your city?
- Limerick
- Castletroy
- Dooradoyle
- Caherdavin
- Raheen
- Ennis
- Shannon
- Adare
- Newcastle West
Need it sorted today?
Same-day callout
Most jobs across Limerick & Clare are sorted same-day or next-day. Pick up the phone or fill the form.
Call 087 187 1948Free local quote
Book your free rainwater harvesting quote
Same-day callouts across Limerick & Clare. From €1,200. We'll come back with a practical local price - no obligation, no upsell.
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