Artesian Water Company Water Quality (Delaware) – 2025 Report Results

We read 25 results from Artesian Water Company’s 2025 water quality report. No results over a legal limit; 4 above a health goal or guideline.

Serves about 231,114 people · Water system ID DE0000552 · Read the district’s 2025 report (opens in a new tab)

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Results from the 2025 report

Each number is copied from the district’s report and links to the page it’s printed on. Where the report lists several plants, wells or purchased water, the highest is shown.

Contaminant	Result	Health goal	Legal limit	What it means
Fluoridehighest measured · range ND to 1.14 · Wells and treatment plants · 2025 report, page 4	1.14 ppm	1 ppm	4 ppm	Above the health goal1.1x the health goal
Lead90th percentile of homes tested, 0 over the action level · sampled 2023 · Customer taps · 2025 report, page 4	1 ppb	0.2 ppb	15 ppb (action level)	Above the health goal5x the health goal
PFOA (a PFAS)average · range ND to 2.28 · Wells and treatment plants · 2025 report, page 5	0.13 ppt	0.007 ppt	4 ppt from 2029	Above the health goal19x the health goal
Radium (combined 226 + 228)highest running annual average · range 1.9 to 4.7 · Wells and treatment plants · 2025 report, page 4	4.3 pCi/L	0 pCi/L	5 pCi/L	Above the health goalThe health goal is zero
Bariumhighest measured · range ND to 0.22 · sampled 2023 · Wells and treatment plants · 2025 report, page 4	0.22 ppm	2 ppm	2 ppm	Below the health goal
Chlorideaverage · range ND to 164 · sampled 2023 · Wells and treatment plants · 2025 report, page 5	59 ppm	—	250 ppm guideline	Within the guideline
Chlorinehighest measured · range ND to 3.3 · Distribution system · 2025 report, page 4	3.3 ppm	None set	4 ppm	Below the legal limit
Chromium (total)highest measured · range ND to 9 · sampled 2023 · Wells and treatment plants · 2025 report, page 4	9 ppb	None set	100 ppb	Below the legal limit
Copper90th percentile of homes tested, 0 over the action level · sampled 2023 · Customer taps · 2025 report, page 4	0.25 ppm	0.3 ppm	1.3 ppm (action level)	Below the health goal
Cyanidehighest measured · range ND to 11 · sampled 2023 · Wells and treatment plants · 2025 report, page 4	11 ppb	150 ppb	200 ppb	Below the health goal
Disinfection byproducts (HAA5)highest running annual average · range ND to 50.8 · Distribution system · 2025 report, page 4	15.7 ppb	None set	60 ppb	Below the legal limit
Disinfection byproducts (TTHM)highest running annual average · range 2.1 to 70.7 · Distribution system · 2025 report, page 4	32.6 ppb	None set	80 ppb	Below the legal limit
GenX (HFPO-DA, a PFAS)average · range ND to 3.1 · Wells and treatment plants · 2025 report, page 5	0.18 ppt	None set	10 ppt from 2029	Below the legal limit
Ironaverage · range ND to 0.28 · Wells and treatment plants · 2025 report, page 5	0.08 ppm	—	0.3 ppm guideline	Within the guideline
Manganeseaverage · range ND to 0.07 · sampled 2023 · Wells and treatment plants · 2025 report, page 5	0.03 ppm	—	0.05 ppm guideline	Within the guideline
Nitrate (as N)highest measured · range ND to 6.87 · sampled 2024 · Wells and treatment plants · 2025 report, page 4	6.87 ppm	10 ppm	10 ppm	Below the health goal
pHaverage · range 6.08 to 8.93 · Wells and treatment plants · 2025 report, page 5	7.33	—	—	Normal range
Seleniumhighest measured · range ND to 5 · sampled 2023 · Wells and treatment plants · 2025 report, page 4	5 ppb	30 ppb	50 ppb	Below the health goal
Sulfateaverage · range ND to 61.3 · sampled 2023 · Wells and treatment plants · 2025 report, page 5	21.1 ppm	—	250 ppm guideline	Within the guideline
Total dissolved solidsaverage · range 38 to 409 · sampled 2023 · Wells and treatment plants · 2025 report, page 5	212 ppm	—	500 ppm guideline	Within the guideline
1,4-Dioxaneaverage · range ND to 3.3 · Wells and treatment plants · 2025 report, page 5	0.83 ppb	None set	None	No health limit
Hardnessaverage · range 1.52 to 21 · sampled 2023 · Wells and treatment plants · 2025 report, page 5	6.61 gpg (113 ppm)	—	—	Moderately hard
Nickelhighest measured · range ND to 7 · sampled 2023 · Wells and treatment plants · 2025 report, page 4	7 ppb	None set	None	No health limit
PFBS (a PFAS)average · range ND to 8.25 · Wells and treatment plants · 2025 report, page 5	0.48 ppt	None set	None	No health limit
Sodiumaverage · range 9.4 to 78.8 · Wells and treatment plants · 2025 report, page 5	32.6 ppm	None set	None	No health limit

Utility results describe the whole system, measured where water enters the pipes, not your tap. Your home’s plumbing can add lead or copper.

EPA testing for PFAS and lithium

EPA’s own nationwide testing (UCMR 5) found these in Artesian Water Company’s water between May 2024 and Feb 2025. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.

PFOA23.1 pptFound in 8 of 45 samples · highest resultAbove the federal limit that takes effect in 2029 (4 ppt)
PFOS6 pptFound in 2 of 45 samples · highest resultAbove the federal limit that takes effect in 2029 (4 ppt)
PFHxS8.9 pptFound in 3 of 45 samples · highest resultNo federal limit in force for this one
PFBS8.7 pptFound in 5 of 45 samples · highest resultNo federal limit in force for this one

Source: EPA UCMR 5 occurrence data. The highest single result is shown; one high sample doesn’t mean every glass is that high.

What you can do

Nothing here is an emergency notice: if the district has a violation, it must tell customers directly. If you’d like to lower these at your tap, these are the treatments that remove them, and the catalog shows the models certified for each. Ranking is by certified removal; commissions never change the order.