ZipCheckup grade for 21031: C.
A mixed picture - some signals here are worth your attention.
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Hunt Valley, MD (21031): PFAS Detected in Mapped Water Systems - 64/100
EPA data for City of Baltimore
Health-based violation records by water system:
EPA records for the water systems mapped to 21031 in Hunt Valley, MD contain 9 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 2 are marked health-based.
Data source: U.S. Environmental Protection Agency (EPA) SDWIS
At a Glance
- Water EPA records for water systems mapped to this ZIP show 2 health-based violations and 7 non-health-based (since 2021).
- Lead The reported 90th-percentile lead result of 0.0027 mg/L is below the EPA action level for water systems; EPA's health goal for lead is zero.
- PFAS PFAS detected in UCMR5 sampling; see the PFAS section for each compound, compared with the federal PFAS MCL where one exists.
- Radon EPA Zone 1 - highest county-level potential. This is not a home measurement; test before any threshold comparison.
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Records for Hunt Valley (21031) show 1 high-priority flag and no critical-level flag on record.
Score Breakdown
Overall Home Safety Score: 64/100
This is the published model score. Component and domain values are shown independently; they are not added together on this page.
Canonical components
Required domains
Coverage: 4 of 4 components and 3 of 3 domains observed.
Model 4.0.0; series home-safety-v4-cross-vertical.
Safety & Health (8) CRITICAL
Your Water System
ZIP code 21031 in Hunt Valley, Maryland is mapped to the water system City of Baltimore (EPA ID: MD0300002). This system provides water to approximately 1,600,000 people from surface water sources.
Other Water Quality Reports in Maryland
- 20588 (Dhs)
- 20601 (Waldorf) - 3 violations recorded for mapped water systems
- 20602 (Waldorf) - 3 violations recorded for mapped water systems
- 20603 (Waldorf) - 3 violations recorded for mapped water systems
- 20604 (Waldorf)
- 20606 (Abell)
- 20607 (Accokeek) - 3 violations recorded for mapped water systems
- 20608 (Aquasco)
- 20609 (Avenue)
- 20610 (Barstow)
- 20611 (Bel Alton) - 3 violations recorded for mapped water systems
- 20612 (Benedict)
- 20613 (Brandywine) - 2 violations recorded for mapped water systems
- 20615 (Broomes Island)
- 20616 (Bryans Road) - 1 violation recorded for mapped water systems
- 20617 (Bryantown)
- 20618 (Bushwood)
- 20619 (California) - 12 violations recorded for mapped water systems
- 20620 (Callaway) - 1 violation recorded for mapped water systems
- 20621 (Chaptico) - 4 violations recorded for mapped water systems
Nearby Water Quality Reports
- 21065 (Hunt Valley) - <1 mi
- 21030 (Cockeysville) - 1 mi - 9 violations recorded for mapped water systems
- 21093 (Lutherville Timonium) - 3 mi - 9 violations recorded for mapped water systems
- 21131 (Phoenix) - 4 mi - 9 violations recorded for mapped water systems
- 21094 (Lutherville Timonium) - 4 mi
- 21251 (Baltimore) - 4 mi - 9 violations recorded for mapped water systems
- 21152 (Sparks Glencoe) - 5 mi - 9 violations recorded for mapped water systems
- 21139 (Riderwood) - 5 mi
- 21153 (Stevenson) - 6 mi - 9 violations recorded for mapped water systems
- 21204 (Towson) - 6 mi - 9 violations recorded for mapped water systems
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for City of Baltimore (MD0300002) on EPA.gov.
4 of the top compounds applied across the surrounding county in USGS pesticide-use estimates appear on EPA drinking-water monitoring lists. See the agricultural pesticide-use section.
Compliance History
PFAS Contamination Detected
PFAS ("forever chemicals") have been reported in samples from water systems associated with ZIP code 21031.
Detected compounds: PFPeA.
Highest measured level: 0.003 µg/L
Reverse osmosis (RO) and activated carbon block filters can reduce PFAS at the tap. Certifications list the compounds covered: an NSF/ANSI 53 or 58 claim for PFOA/PFOS does not cover every PFAS, so check that the product lists the compounds detected here.
Environmental Hazards (10) MODERATE
Home & Infrastructure (8) OK
Cost & Community (7) OK
CPSC product recall notices
These national notices are not matched to this ZIP code or water system.
Frequently Asked Questions
Is the tap water in 21031 safe to drink?
EPA SDWIS records 9 violations since 2021 across the water systems mapped to ZIP 21031 (primary system: City of Baltimore), including 2 health-based. The violation table above shows which system each record belongs to. ZipCheckup last updated this page in July 2026. The federal source release date is unavailable, so that month is not presented as source currency.
Where does 21031's water come from?
The recorded water source for City of Baltimore, a system mapped to ZIP code 21031, is Surface water. This system serves approximately 1,600,000 people.
How does Hunt Valley water compare to the national average?
Hunt Valley's Home Safety Score ranks lower than 77% of U.S. ZIP codes, and lower than 83% of ZIP codes within Maryland.
How can I get my water tested in Hunt Valley?
If City of Baltimore supplies your home, contact it for its Consumer Confidence Report; otherwise contact the water utility that serves your address, or hire a certified lab for independent home water testing. The EPA recommends annual testing if you use a private well.
Is lead a concern in 21031 tap water?
The Lead and Copper Rule record selected for 21031 reports a 90th-percentile lead result of 0.00274 mg/L for a water system mapped to this ZIP (record date 2024-12-31). The EPA action level is 0.015 mg/L. This result is below the EPA action level; it does not show the lead level in each home.
What is the radon risk for 21031?
21031 is mapped to a county in EPA Radon Zone 1 (high county-level radon potential; EPA recommends testing every home), located in Baltimore County. EPA radon zones range from Zone 1 (highest county-level potential) to Zone 3 (lowest). Testing your home is recommended regardless of zone.
Are there PFAS (forever chemicals) in 21031's water?
Yes, PFAS have been detected in samples from water systems mapped to 21031. Reverse osmosis and activated carbon filters certified to NSF/ANSI 53 or 58 specifically for PFOA/PFOS reduction can reduce PFAS.
How to cite this page
ZipCheckup. (2026). Hunt Valley, MD (21031): PFAS Detected in Mapped Water Systems - 64/100. https://zipcheckup.com/report/21031/
@misc{zipcheckup-report-21031,
author = {{ZipCheckup}},
title = {{Hunt Valley, MD (21031): PFAS Detected in Mapped Water Systems - 64/100}},
year = {2026},
url = {https://zipcheckup.com/report/21031/}
}
Page version: October 2026.
Nearby ZIP Code Reports
Water quality comparison for ZIP codes near 21031
| ZIP Code | City, State | Distance | Grade | Violations |
|---|---|---|---|---|
| 21065 | Hunt Valley, MD | <1 mi | N/A | 0 |
| 21030 | Cockeysville, MD | 1.0 mi | C | 9 |
| 21093 | Lutherville Timonium, MD | 3.3 mi | N/A | 9 |
| 21131 | Phoenix, MD | 4.1 mi | C | 9 |
| 21094 | Lutherville Timonium, MD | 4.4 mi | N/A | 0 |
| 21251 | Baltimore, MD | 4.4 mi | C | 9 |
| 21152 | Sparks Glencoe, MD | 4.9 mi | N/A | 9 |
| 21139 | Riderwood, MD | 4.9 mi | N/A | 0 |
| 21153 | Stevenson, MD | 5.7 mi | N/A | 9 |
| 21204 | Towson, MD | 5.8 mi | C | 9 |
Nearby ZIP Code Reports
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