Is Dover Water Safe to Drink? What Every Homeowner Should Know

Yes, Dover’s tap water meets federal safety standards. The city is served by its own local water utility, separate from the municipal systems in nearby Maryland cities, and drinking water in Dover is treated and regulated under the same EPA framework that governs public water systems nationwide. That said, homeowners in the area should know that Delmarva Peninsula communities, including Dover, sit in a region where PFAS (“forever chemicals”) have become an active concern, and where groundwater sources common to the peninsula can carry hardness minerals and trace metals worth testing for. The real question for most homes isn’t “safe vs. unsafe,” it’s whether the water’s hardness, chlorine taste, and any trace contaminants are worth addressing at the tap.

When a water utility says its supply is safe, that means it meets the EPA’s Maximum Contaminant Levels (MCLs) when averaged across the year. That’s a meaningful baseline, but there is more homeowners should know.

Dover has its own local water utility that sources, treats, and distributes drinking water to homes and businesses within city limits. As with most communities on the Delmarva Peninsula, Dover’s water system draws on the region’s groundwater aquifers, a common source across this part of Delaware, and treats it before distribution to meet state and federal drinking water standards.

Culligan’s dealer for this part of the Delmarva Peninsula is Sharp Water, headquartered in Salisbury, Maryland. Sharp Water’s service territory extends across the peninsula to cover Dover, Cambridge, Easton, Elkton, Middletown, Milford, Smyrna, St. Michaels, and Princess Anne, alongside its Salisbury home base. Because Dover and Salisbury are served by separate municipal utilities, homeowners in Dover should treat Dover’s own published Water Quality Report as the definitive source for local numbers. Sharp Water’s regional experience across the peninsula still makes it a relevant resource for understanding the kinds of water quality issues, hardness, chlorine, trace metals, and PFAS, that show up across Delmarva groundwater systems.

Groundwater systems like those common across Delmarva tend to be more stable year-round than surface water supplies, but they carry their own considerations. Aquifer water often picks up dissolved minerals like calcium and magnesium as it moves through rock and soil, which shows up downstream as hardness, and can carry naturally occurring metals depending on local geology.

A Dover-specific water quality news item was not available in the data reviewed for this article. However, homeowners in the Dover area should be aware of a notable PFAS case elsewhere on the Delmarva Peninsula that illustrates the kind of regional concern affecting groundwater and private wells across this part of Delaware and Maryland.

State officials in Maryland discovered PFAS in wastewater at a Perdue AgriBusiness facility in Salisbury in 2023, but nearby residents weren’t informed for nearly a year. Since then, testing has revealed that more than 350 private wells near the facility contain PFAS, many at levels 10 to 100 times higher than safe drinking water standards. Contaminated groundwater from the site has been moving through the aquifer at a rate of one to two feet per day, and the chemicals identified, including PFOA, PFOS, and PFHxS, have been linked to cancers, liver and kidney damage, and immune system effects. More than 400 residents joined a class action lawsuit, and as of mid-2025 the community was still working through the scope of the contamination.

This case happened in Salisbury, Maryland, not Dover, and there is no indication it has affected Dover’s water supply directly. It’s worth knowing about because it shows how PFAS contamination tied to agricultural and industrial sources can move through the shared groundwater geology of the Delmarva Peninsula, and why testing has become a bigger priority for homeowners across the region, Dover included.

A Dover-specific Water Quality Report was not available for this article. The figures below come from Sharp Water’s regional testing data, drawn from its Salisbury, Maryland home base and representative of water quality conditions common across the Delmarva Peninsula groundwater systems it serves. Dover homeowners who want exact local numbers should check the City of Dover’s own published Water Quality Report, since actual levels can differ between municipal systems even within the same region.

Regional testing puts chlorine at 1.0 ppm. Chlorine disinfects water on its way from the treatment plant to the tap, and at this level it’s within a normal range, though it can still produce a noticeable taste or smell for sensitive households.

Regional figures show HAA5 at 3.7 ppb and Total Trihalomethanes (TTHMs) at 3.8 ppb, both well below their federal MCLs of 60 ppb and 80 ppb. These byproducts form when chlorine reacts with organic material in source water, and levels this low suggest the source water and treatment process are managing organic load effectively. Individual systems and sampling sites can still vary.

Regional testing showed lead as non-detect at the 90th percentile and copper at 0.10 ppm, both comfortably within federal action levels. Barium came in at 0.164 ppm. These figures are a good sign for the region overall, but lead and copper risk depends heavily on the plumbing inside an individual home rather than what leaves the treatment plant, so older homes in the Dover area should not assume these regional numbers apply directly to their own tap.

PFAS are a growing concern across the Delmarva Peninsula and the country as a whole, because these compounds break down slowly and can persist in water supplies for decades. PFAS have been linked in some studies to increased risks of certain cancers, thyroid disease, immune system effects, developmental concerns, and elevated cholesterol.

Regional testing detected six PFAS compounds: PFOS at 6.875 ppt, PFOA at 1.475 ppt, PFHxS at 2.35 ppt, PFBS at 2.575 ppt, PFHxA at 2.0 ppt, and PFPeA at 1.9 ppt. These are regional figures from Sharp Water’s Salisbury-area testing, not a Dover-specific measurement, but the presence of multiple PFAS compounds across Delmarva groundwater systems is a reason for Dover homeowners to pay attention to their own utility’s PFAS reporting and consider testing at the tap.

Regional data also showed nitrate at 6 ppm, fluoride at 0.4 ppm, gross beta particle activity between 4.9 and 6.9 pCi/L, dibromochloromethane at 0.00062 ppm, and asbestos at 0.19 mfl. All of these fall within federal limits, but they illustrate the range of substances a full water quality report tracks beyond the headline contaminants.

Most water quality issues show up at the tap before they show up in any report. If a Dover homeowner notices any of the following, it’s worth testing rather than waiting.

Not all water tests look for the same contaminants, and the right option depends on what a homeowner is trying to learn.

Culligan’s free in-home water test identifies common household water issues like:

This type of test helps determine whether a water softener or filtration system would improve a home’s water quality. In-home testing is not intended to detect contaminants like lead or PFAS, which require laboratory analysis.

Certified lab testing is the best option for homeowners concerned about:

Lab testing is recommended for older homes, homes with young children, or anyone who wants detailed contaminant-specific results. Pricing varies depending on the contaminants being tested.

DIY water test kits can be purchased online through retailers. These kits screen for hardness, chlorine, pH, iron, and other basic water conditions. They’re convenient but less comprehensive than certified laboratory testing and should be treated as a basic screening tool rather than a replacement for professional analysis.

Testing isn’t necessary every month, but there are specific moments when it’s worth doing.

Most of these cost nothing and reduce exposure.

Once a homeowner knows what’s in their water, picking the right system is straightforward.

A water softener removes the hardness minerals like calcium and magnesium that cause scale buildup, common in groundwater-fed systems across the Delmarva Peninsula.

A whole-house filter reduces chlorine, sediment, and disinfection byproducts at the point where water enters the home, so every tap, shower, and appliance benefits.

An RO system installed under the kitchen sink polishes drinking and cooking water by removing lead, byproducts, and a long list of trace contaminants.

Given the PFAS concerns documented elsewhere on the Delmarva Peninsula, advanced filtration can target these compounds at low levels for homeowners who want an added layer of protection at the tap, regardless of what a given system’s current PFAS numbers show.

Dover-area homeowners have options when it comes to choosing the right system for their home. Sharp Water, the Culligan dealer serving Dover as part of its Delmarva Peninsula territory, offers flexible rental, installation, and repair services so homeowners can choose what fits their needs and budget.

Since water quality can vary by neighborhood and by plumbing age, starting with a free at-home water test helps Dover homeowners evaluate what water treatment approach fits their needs. Schedule your free water test here.