Middletown, DE water treatment
What's in Middletown's water, who supplies it, and how to fix what you find, with sources. Check your ZIP for your utility's EPA records.
Your water in Middletown
ZIP 19709 has several suppliers: Artesian Water Company serves the largest mapped share, Middletown Water Department serves about 17,700 people, and small districts cover a few neighborhoods[1]. About 75% of the ZIP's land lies outside mapped service areas, so private wells are common around Middletown.
The two main utilities look quite different in EPA records. Middletown Water Department had no PFAS detected in its UCMR 5 samples and a 0 ppb lead result. Artesian reported PFOA up to 23.1 ppt[2][1].
Local issues to know
- Private wells: Delaware's Division of Public Health recommends testing every year for nitrate and bacteria, and offers free test kits and financial aid for well owners[3]. See nitrate.
- Hardness: Artesian Water Company reported 113 mg/L as calcium carbonate, about 6.6 grains per gallon on average, from 26 to 359 mg/L[4]. The USGS calls 61–120 mg/L moderately hard and 121–180 mg/L hard[5]. See hard water and our hardness by town table.
- PFAS: Delaware's PFOA and PFOS limits of 4.0 ppt took effect in January 2026[6]. Utilities post results on Delaware Drinking Water Watch[7].
Utility or well? ZIP 19709: about 75% of the land area lies outside mapped public water service areas[1]. Homes in those areas are likely on private wells, which no utility tests. If that's you, start with a free in-home test.
Utility records
Artesian Water Company
EPA water system ID DE0000552 · serves about 231,114 people · surface water bought from another supplier
- Health violations
- No health-based violations in the last three years; 4 older on record (manganese, May 2020, resolved; manganese, Sep 2019, resolved)[1]
- Lead
- 1 ppb at the 90th percentile of its most recent lead sampling (EPA action level: 15 ppb)[8]
- PFAS
- EPA UCMR 5 sampling found PFOA up to 23.1 ppt, PFOS up to 6 ppt, PFPeA up to 106 ppt, PFBA up to 79.1 ppt, so PFOA and PFOS were above the 4.0 ppt federal limit that takes effect in 2029.[2]
Full EPA record for this system · Ask the utility for its annual Consumer Confidence Report (CCR) for hardness and other details[9].
Middletown Water Department
EPA water system ID DE0000614 · serves about 17,700 people · surface water bought from another supplier
- Health violations
- No health-based violations on record[1]
- Lead
- 0 ppb at the 90th percentile of its most recent lead sampling (EPA action level: 15 ppb)[8]
- PFAS
- No PFAS were detected in its EPA UCMR 5 samples.[2]
Full EPA record for this system · Ask the utility for its annual Consumer Confidence Report (CCR) for hardness and other details[9].
Recommended for Middletown homes
Comparing options? See tankless vs. tank reverse osmosis and all five WÜDR systems.
How it works
- Analysis: your free ZIP report and quiz, or a free in-home test (always, for wells).
- Recommendation: a system matched to your results.
- Price: shown only after the analysis.
- Install: buy on your own or talk it through first.
Check your water in Middletown
Look up what your local water utility has reported to the EPA, then take a 60-second quiz about what you see, taste, and smell at home. We'll use both to recommend the right solution.
Get your water report
Enter your ZIP code to see your utility's violations, lead testing, and PFAS results from public EPA records, explained in plain English.
Data comes from U.S. EPA and Census public records. It covers public water systems, not private wells, and it isn't a test of your home's tap. If you're on a well, a free in-home test is the best way to know what's in your water.
Water self-check quiz
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Based on your water report and quiz answers.
Middletown water questions
Does Middletown, DE water have PFAS?
Middletown Water Department had no PFAS detected in its EPA UCMR 5 samples. Artesian, which also serves the area, reported PFOA up to 23.1 ppt.
Am I on a well?
Possibly. About 75% of ZIP 19709 is outside mapped public water service. If you don't get a water bill, you're on a private well.
What should a Middletown well owner test?
Delaware recommends a yearly nitrate and bacteria test, and offers free test kits. Add hardness, iron, and pH before choosing treatment.
Book a free water test in Middletown
Sources
- U.S. EPA: SDWIS Federal Reports (violations, lead and copper results). sdwis.epa.gov/ords/sfdw_pub/r/sfdw/sdwis_fed_reports_public/200
- U.S. EPA: UCMR occurrence data. www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule
- Delaware DPH: Financial aid program and free water testing kits for private well owners (Aug 31, 2023). news.delaware.gov/2023/08/31/dph-launches-new-financial-aid-program-for-private-well-owners-offers-free-water-testing-kits-to-delaware-residents/
- Artesian Water Company (PWSID DE0000552): Water Quality Report for 2025. www.artesianwater.com/wp-content/uploads/wqawc2025-1.pdf
- USGS Water Science School: Hardness of water. www.usgs.gov/special-topics/water-science-school/science/hardness-water
- Delaware Public Health: PFAS in Delaware public drinking water. publichealthalerts.delaware.gov/pfas-in-delaware-public-drinking-water/
- Delaware Drinking Water Watch. drinkingwater.dhss.delaware.gov/
- U.S. EPA: Basic information about lead in drinking water. www.epa.gov/ground-water-and-drinking-water/basic-information-about-lead-drinking-water
- U.S. EPA: Consumer Confidence Reports (CCR) information for consumers. www.epa.gov/ccr/ccr-information-consumers
EPA records retrieved Oct 2026 from the EPA SDWIS and UCMR 5 public datasets. Utility records describe a water system, not the tap in your home. Records can lag and may be incomplete.