By State › Ohio
Ohio: Laws & Legal Considerations
Download all of Ohio as PDF PrintRainwater harvesting: the first state covered here that allows potable use
Every other state covered on this site restricts collected rainwater to non-potable use only. Ohio is different: under specific conditions, it’s legal to drink it.
| Rule | Ohio |
|---|---|
| Source water | Rooftop or other catchment |
| Non-potable use | Legal, generally without a permit for typical residential systems |
| Potable use | Legal as a "private water system" under Ohio Revised Code §3701.344 if it serves fewer than 15 connections and doesn't regularly serve 25+ people at least 60 days a year |
| Collection volume | Ohio DNR allows collection up to 10,000 gallons without additional approval |
| Permits | Required from local authority or the Ohio Department of Health before starting collection; requirements vary by locality |
Potable use still means treatment, not just a bigger tank
The legal pathway to drinking harvested rainwater exists, but it requires the water to be treated to private-water-system standards under Ohio Administrative Code 3701-28-12, not simply collected and consumed. This is a meaningfully higher bar than the non-potable systems covered on every other state’s laws page so far.
Where to find it: the Ohio Department of Health (odh.ohio.gov) administers private water system rules; check with your county or city building department for local permit requirements.
Water rights: riparian reasonable use, with an explicit constitutional protection
Ohio follows the same riparian reasonable-use doctrine as most of the states covered on this site, but it’s the first one where that protection is written directly into the state constitution rather than resting on case law alone.
| Concept | How it works in Ohio |
|---|---|
| Surface water | Riparian owners have a property interest in the reasonable use of water in an adjacent lake or watercourse |
| Groundwater | A property owner has a property interest in the reasonable use of groundwater beneath their own land, explicitly protected under Ohio Constitution Article I, §19b |
| Limits | Reasonable use only; groundwater may be used on the overlying tract but can't be transported to a different, non-overlying tract |
Where to find it: Ohio State University’s Agricultural & Resource Law Program (farmoffice.osu.edu) publishes a plain-language guide to Ohio water rights for property owners.
Permitless carry, with an optional license for reciprocity
Ohio eliminated its permit requirement for concealed carry in June 2022, joining Utah, Texas, and Florida among the permitless-carry states covered on this site.
| Requirement | Detail |
|---|---|
| Standard | Permitless ("constitutional") carry: any adult 21+ who can legally possess a firearm may carry concealed with no permit |
| Optional Concealed Handgun License (CHL) | Available for reciprocity in states that require a permit from Ohio residents; requires 8 hours of firearms safety training |
| Cost and validity of optional CHL | $67 for Ohio residents of 5+ years (plus an FBI background-check fee for newer residents), valid 5 years |
Sources
- Ohio rainwater harvesting rules, potable-use pathway, and collection limits: Enlight Inc.; Ohio Revised Code §3701.344
- Ohio riparian water rights and constitutional groundwater protection: Ohio Constitution Article I §19b; OSU Agricultural & Resource Law Program
- Ohio permitless carry and optional CHL requirements: Protect With Bear; CCW Hub