Baltimore's water situation in 2026 is defined by a single active program: the identification and replacement of lead service lines, driven by the EPA's Lead and Copper Rule Revisions. Both Baltimore City and Baltimore County are mid-program, with different situations and deadlines.
The good news for Baltimore City residents is surprising: according to the Maryland Department of the Environment, Baltimore City does not have lead service lines on the utility-owned side of the meter — a relatively unusual status among older East Coast cities. The challenge is interior plumbing in the city's extensive pre-1986 housing stock.
Baltimore County's situation is more complex, with an active free replacement offer that just closed a deadline on March 31, 2026.
Baltimore City vs. Baltimore County: Two Different Programs
It's important to distinguish these — they are different water systems:
Baltimore City (operated by the Baltimore City Department of Public Works) serves approximately 600,000 city residents plus some suburban customers. Baltimore draws water from Loch Raven and Prettyboy Reservoirs.
Baltimore County (operated by Baltimore County DPWT) serves approximately 300,000+ county residents. The county system has its own infrastructure separate from the city's.
What's Happening in 2026
Baltimore County: Free Lead Line Replacement — Survey Deadline March 31, 2026
Baltimore County has been offering free replacement of customer-side lead water service lines to any resident who submits a self-reporting survey confirming their line contains lead. The deadline for this offer is March 31, 2026 — this week.
If you're a Baltimore County resident who hasn't checked: go to baltimorecountymd.gov and look for the Lead Reduction Program. The process involves a scratch-and-magnet test on your service line, submitting a photo. Early county data suggests the likelihood of finding lead in Baltimore County is relatively low compared to older cities — but the replacement is free for confirmed lead lines, so checking is worthwhile.
DPWT's Lead Reduction Program contact: (410) 887-1368 or waterserviceline@baltimorecountymd.gov
Baltimore City: Service Line Inventory Submitted, Notification Letters Being Mailed
In October 2024, Baltimore City DPW submitted its initial water service line inventory to the Maryland Department of the Environment — a federal requirement under the Lead and Copper Rule Revisions. Beginning fall 2025, the city started mailing notification letters to residents and businesses with lead or galvanized service lines, as well as those with unknown pipe materials who need to complete an online self-reporting survey.
The key finding about Baltimore City's system: Prior MDE surveys determined that Baltimore City (unlike many comparably aged East Coast cities) does not have lead service lines on the public/utility side of the meter. This is a meaningful advantage — it means the primary lead risk in Baltimore City comes from the customer-owned side (the pipe between the meter and the house) and from interior plumbing.
In April 2025, the Maryland Board of Public Works approved $74 million for seven Baltimore City water infrastructure projects, including $6.9 million specifically for lead service line inventory work. The state is making significant investment in Baltimore's water system.
Johns Hopkins Research: The Lead Picture Isn't Finished
A summer 2025 study from Johns Hopkins University researchers highlighted a challenge: as Baltimore faces federal deadlines to identify and replace lead service lines, many residents — particularly in historically underserved neighborhoods — remain hard to reach with outreach. Engagement gaps mean some high-risk properties may not have been identified.
If you live in older Baltimore City neighborhoods (particularly pre-1960 housing in areas like East Baltimore, West Baltimore, Sandtown-Winchester, and similar historic areas), lead in interior plumbing is a realistic concern regardless of whether the service line itself is lead-free.
What's in Baltimore Tap Water in 2026
Lead: Risk from Interior Plumbing, Not Distribution System
The treated water leaving Baltimore's reservoir-fed filtration plants is essentially lead-free. Lead enters at the building level. In Baltimore's pre-1986 housing stock — which constitutes a substantial share of the city's housing — lead solder at pipe joints is widespread. Buildings with galvanized steel pipes (pre-1960) also have the galvanized lead accumulation problem described in our older homes guide.
Who is at highest risk: Renters in older row houses, particularly in neighborhoods with dense pre-WWII housing stock. Children under 6 and pregnant residents in these buildings.
How to test: Baltimore City DPW offers a free water testing kit program — contact (410) 396-0010 or visit their website.
Disinfection Byproducts: Within Limits
Baltimore draws from Loch Raven and Prettyboy Reservoirs — relatively high-quality surface water compared to river-based systems. DBP levels (TTHMs and HAAs) are present but generally at lower levels than river-source cities like Atlanta or San Diego. EWG data shows some exceedances of their health guidelines but at lower magnitudes than the most DBP-heavy cities.
PFAS: Not a Current Concern
Maryland's reservoir-based water systems in the Baltimore region have not shown significant PFAS issues in monitoring to date. The 2024 UCMR 5 monitoring data for major Maryland systems shows PFAS below detection limits. This is a relative advantage for Baltimore versus many other cities.
Hardness: Moderate at 6–9 GPG
Baltimore has moderately hard water — not the extreme levels of Phoenix or Las Vegas, but enough for minor scale formation. Standard activated carbon filters or pitcher filters for taste are adequate for hardness management; a whole-house softener is optional rather than essential.
Chromium-6 and Other Trace Contaminants
EWG data shows some chromium-6 and other contaminants above their guidelines in Baltimore testing, but at lower levels than the most affected cities. Not a primary concern requiring specialized filtration.
→ Check your specific Baltimore ZIP code's water quality at PureCity
What Baltimore Residents Should Do Right Now
Baltimore County residents: If you haven't submitted the lead service line survey yet, do it today — the March 31, 2026 deadline is this week. Free pipe replacement for confirmed lead lines. Check baltimorecountymd.gov or call (410) 887-1368.
Baltimore City residents: Check if you received a notification letter about your service line. If you're in pre-1986 housing and haven't been tested, contact DPW about free testing kits.
All Baltimore residents in pre-1986 homes: Use a point-of-use filter certified for lead while the service line program proceeds.
Filter Recommendations for Baltimore
The primary filtration concern in Baltimore is lead from interior plumbing in older homes. Baltimore's water quality is relatively good otherwise — low PFAS, moderate DBPs, manageable hardness.
Best under-sink filter for lead — moderate budget:
- Frizzlife SK99 (~$90) — NSF 53 certified for lead; no drilling required; direct-connect to cold water line; good everyday performance for Baltimore's water profile
Best faucet mount filter — lowest barrier to install:
- PUR PLUS Faucet Filter (~$35) — NSF 53 certified for lead; installs in minutes; very accessible for renters
Best pitcher:
- Clearly Filtered (~$90) — independently certified for lead and 360+ contaminants; best pitcher option for lead reduction
- Brita Elite (~$40) — NSF 53 certified for lead (blue Elite filter only, not the Standard white filter); budget-accessible if filter is replaced on schedule
Note: The S&WB provides free lead-filtering water pitchers to Baltimore City residents with confirmed lead waterlines — contact DPW about the program before purchasing.
If you want comprehensive coverage:
- APEC ROES-50 (~$215) — NSF 58 RO; removes lead, DBPs, and everything else; overkill for most Baltimore situations but appropriate for highest-risk older homes
Resources
- Baltimore County Lead Reduction Program: baltimorecountymd.gov/departments/public-works (survey deadline March 31, 2026)
- Baltimore City DPW service line inventory: publicworks.baltimorecity.gov
- Free water testing: Baltimore City DPW (410) 396-0010
- Baltimore Service Line Partnership map: baltimorecountymd.gov/waterservicelines
- Maryland Department of the Environment lead program: mde.maryland.gov
The Bottom Line for Baltimore Residents
Baltimore's water system has a genuine advantage relative to many comparable-age cities: no city-side lead service lines in Baltimore City (per MDE surveys), reservoir source water with lower organic content than river systems, and low PFAS. The challenge is interior plumbing in the city's abundant pre-1986 housing, and the Baltimore County service line program with its March 31 deadline.
For older home residents: get tested, check the county survey deadline, and use a certified lead-reduction filter in the interim. For newer construction, Baltimore's water quality is quite good and standard filtration is optional.
Related Articles
- Best Water Filter for Older Homes: Lead Solder, Galvanized Pipes, and What to Buy
- Lead in Drinking Water Filters: What Brita Won't Tell You
- Newark, NJ Water Quality 2026: From Lead Crisis to Full Service Line Replacement
Sources: Baltimore County: Free Lead Service Line Replacement Offer · Baltimore City DPW: Service Line Inventory Notification · Maryland Board of Public Works: $74M for Baltimore City Water Infrastructure, April 2025 · Maryland Department of the Environment: Lead and Drinking Water · Johns Hopkins Hub: Getting the Lead Out, Summer 2025 · EWG Tap Water Database: Baltimore