Rainwater Harvesting: Lincoln vs Rocklin
How do rainwater harvesting rules compare between Lincoln, CA and Rocklin, CA?
Lincoln and Rocklin have similar restriction levels.
Lincoln, CA
Placer County
Capturing rainwater from rooftops for non-potable landscape use is legal in Lincoln without a water-rights permit under the California Rainwater Capture Act (Water Code 10574). Larger cisterns and any plumbing tie-in must comply with the California Plumbing Code adopted in Lincoln Municipal Code Title 15.
View full Lincoln rules →Rocklin, CA
Placer County
Rocklin has no city-specific rainwater harvesting ordinance. Residential rainwater capture is governed by California Plumbing Code (Title 24 Part 5) Chapter 17 - Nonpotable Rainwater Catchment Systems and the California Rainwater Capture Act (Water Code 10574). Outdoor barrels under 360 gallons used for landscape irrigation generally require no permit; cistern systems with potable plumbing connections require a Building Division plumbing permit.
View full Rocklin rules →Key Facts Comparison
| Fact | Lincoln | Rocklin |
|---|---|---|
| Rainwater capture legal | Yes (Cal. Water Code 10574) | - |
| Water-rights permit required | No | - |
| Building permit threshold | 5,000 gal or plumbed tie-in | - |
| Cross-connection rules | 17 CCR 7583+ | - |
| Adopted plumbing code | 2022 CPC via LMC Title 15 | - |
| Local ordinance | - | None (state law controls) |
| State authority | - | CA Water Code 10574 (Rainwater Capture Act) |
| Plumbing standard | - | CA Plumbing Code Ch 17 (adopted via RMC Title 15) |
| Rain barrel permit | - | Not required (under 360 gal, irrigation only) |
| Cistern permit | - | Building Division plumbing permit |
| Runoff | - | No discharge to streets (NPDES) |
Highlighted rows indicate differences between cities.
Lincoln FAQ
Do I need a permit for a rain barrel?
Not for a standalone barrel under 100 gallons used for outdoor irrigation. Permits are required for plumbed systems, cisterns over 5,000 gallons, or anything tied into building drainage.
Can I use rainwater inside the house?
Yes for non-potable uses (toilet flushing, laundry) if the system is designed and permitted per CPC Chapter 17 with required backflow prevention.
Are there rebates?
Placer County Water Agency runs periodic rebate programs for rain barrels and high-efficiency irrigation - check pcwa.net for current offers.
Rocklin FAQ
Can I install rain barrels in Rocklin without a permit?
Generally yes. Surface rain barrels for outdoor landscape irrigation are authorized by California Water Code 10574 and need no city permit. Larger cisterns or any system plumbed to indoor fixtures require a Rocklin Building Division plumbing permit under California Plumbing Code Chapter 17.
Does Rocklin offer rainwater rebates?
The City does not publish a rainwater rebate program. Check Placer County Water Agency at pcwa.net or call (530) 823-4850 for current rebates available to PCWA treated-water customers.
Can I use harvested rainwater inside my house?
Only with a permitted catchment system meeting California Plumbing Code Ch 17 - purple-pipe labeling, backflow prevention, and Building Division approval. Most residential use is outdoor irrigation.
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