Radon in Water in Ridgewood, NJ — A Question Worth Asking Even in a Predominantly Municipal Water Community
Ridgewood draws from the Hackensack River system — treated, aerated, and distributed by Suez Water to most homes in the village. For the majority of Ridgewood residents, that treatment process significantly reduces the risk of elevated waterborne radon arriving at the tap. But Bergen County’s geological profile places it within New Jersey’s elevated-radon zone, and for any Ridgewood-area property on a private well, the geological context is directly relevant. For municipal water customers who’ve found elevated indoor air radon without a clear soil-gas explanation, waterborne radon is worth ruling out with an actual test rather than a statistical assumption. A water quality assessment that specifically includes radon provides that answer directly.
How Radon Moves Through Water Into a Home
Radon is a naturally occurring radioactive gas that forms as uranium decays in bedrock and soil. It enters homes through two distinct pathways — soil gas rising through foundation cracks, and dissolved in groundwater moving through the plumbing. When radon-containing water is used in the home — in the shower, the dishwasher, or at a running faucet — the dissolved gas transfers into the indoor air. Research has estimated that 10,000 pCi/L of radon in water contributes roughly 1 pCi/L to indoor air radon levels.
For homes where both pathways are active, total indoor radon exposure is higher than either the air test or the water test alone would reveal. For Ridgewood’s predominantly municipal water customer base, treatment — particularly aeration — handles much of the waterborne radon before it reaches distribution. But for any property drawing from a private well, no treatment stands between the aquifer and the tap. Radon in water is invisible, tasteless, and odorless. A laboratory test specifically ordered for it is the only way to detect it.
Bergen County’s Geological Context and What It Means for Radon in Water
Bergen County sits within New Jersey’s elevated-radon zone — the geological formations underlying this part of North Jersey are associated with higher naturally occurring radon in both air and groundwater than the sedimentary geology of South and coastal New Jersey. The Hackensack River watershed that supplies Ridgewood’s municipal water draws from this same geological context. Treatment, including aeration, reduces dissolved radon significantly for municipal customers. For private well owners in Bergen County, the geological environment is the baseline — and testing is the only way to know what a specific well is producing.
Ridgewood’s water profile also has the corrosivity dimension — Bergen County’s soft, slightly acidic water interacts differently with plumbing than harder water, which matters for certain contaminants. For radon specifically, geology is the primary driver. Nearby Glen Rock, Paramus, Wyckoff, and Midland Park share the same Bergen County geological profile and the same considerations for any private well owners in those communities.
When Testing Makes Sense for a Ridgewood Home
- Your property draws from a private well anywhere in Bergen County
- You’ve tested indoor air radon and found elevated levels without a fully identified source
- You’re purchasing a home with a private well and want a complete water quality baseline
- You want to rule out waterborne radon as a contributing factor to indoor air concerns
- You’re on municipal water but want certainty rather than a treatment assumption
Radon in Water Risk by Scenario — Ridgewood Area Homeowners
| Scenario | Risk Level | Recommended Action |
|---|---|---|
| Private well in Bergen County | Higher — direct groundwater exposure in elevated-radon zone | Test immediately; include in any well water panel |
| Ridgewood municipal water customer | Lower — Suez Water treatment reduces radon significantly | Test if indoor air radon is elevated or if concerned |
| Elevated indoor air radon, source unclear | Water may be contributing — unknown without testing | Test water radon as part of full radon assessment |
| Home purchase with private well | Unknown — baseline needed | Test before or immediately after closing |
What Comes After Testing
A radon-in-water test returns a specific picocuries-per-liter concentration. Below the EPA’s suggested action level of 4,000 pCi/L, no treatment is required. Above it, aeration systems and granular activated carbon filtration are both established and effective treatment options. Our radon in water removal page covers what treatment involves in detail. For Ridgewood homeowners also thinking about PFAS, lead, and chloramine byproducts in the Hackensack watershed supply, our water filtration page covers those concerns alongside radon. Our full New Jersey service area covers communities statewide.
Frequently Asked Questions — Radon in Water Testing in Ridgewood, NJ
Is Bergen County in an elevated-radon zone?
Yes. Bergen County sits within New Jersey’s elevated-radon geological zone — the geological formations of North Jersey are associated with higher naturally occurring radon than the sedimentary geology of South Jersey. This influences both airborne and waterborne radon concentrations, and is the primary reason private well owners in Bergen County should include radon in any comprehensive well water assessment.
Does Ridgewood’s soft water affect radon in water risk?
Water softness and pH affect how water interacts with plumbing — relevant for lead and copper corrosion concerns. For radon specifically, geology is the primary driver rather than water chemistry. The soft water profile of the Hackensack system doesn’t meaningfully affect radon concentrations in either direction.
Is radon testing included in a standard water quality panel?
No. Radon in water requires a specific laboratory analysis ordered separately. A standard panel covering PFAS, lead, hardness, and bacteria does not include radon unless it’s explicitly requested. If radon wasn’t specifically on your water test, that question remains unanswered.
What radon level in water requires action?
The EPA’s suggested action level for private well water is 4,000 pCi/L. We walk through your specific results in context — what the number means for your household’s total radon exposure, not just how it compares to a threshold.
How quickly can testing be arranged?
We’re typically able to schedule within a few days. Sample collection at your home takes under an hour, and laboratory results return within approximately one to two weeks.
Get a Clear Answer on Radon in Your Ridgewood Home’s Water
If you’re in Ridgewood on a private well and haven’t specifically tested for radon — or if indoor air radon is a concern you haven’t fully resolved — a radon-in-water test is a straightforward addition that gives you a direct answer. We serve Ridgewood and all of Bergen County. Call us at (732) 357-1988 or reach out online.
