CheckPFAS

ZIP 19711 · Delaware

Newark, DE

High Risk
See the full Newark overview — all utilities & ZIP codes →

11 compounds detected

Above EPA drinking water limits

PFOA Exceeds limit
25.30 ppt (633% of MCL)
→ 6.3× MCL
0 MCL: 4 ppt 25.3 ppt
PFOS Exceeds limit
7.50 ppt (188% of MCL)
→ 1.9× MCL
0 MCL: 4 ppt 7.5 ppt
PFNA Exceeds limit
11.60 ppt (116% of MCL)
0 MCL: 10 ppt 15 ppt
PFHxS
8.90 ppt (89% of MCL)
0 MCL: 10 ppt 15 ppt
PFPeA no federal limit
106.00 ppt
0 159 ppt
PFBA no federal limit
79.10 ppt
0 118.7 ppt
PFHxA no federal limit
72.20 ppt
0 108.3 ppt
PFHpA no federal limit
27.70 ppt
0 41.6 ppt
PFBS no federal limit
8.70 ppt
0 13.1 ppt
PFDA no federal limit
4.70 ppt
0 7.1 ppt
PFUnA no federal limit
3.80 ppt
0 5.7 ppt
Above EPA limit Below EPA limit No federal limit EPA MCL

Above EPA Limits

6 compounds exceed EPA Maximum Contaminant Levels in water serving this ZIP code. Standard pitcher filters like Brita do not remove PFAS. See filter recommendations below.

PFAS Detected
25
Above EPA Limits
6
Water Systems
3
Highest % of MCL
633%

Plain English

01What this means for you

One or more PFAS compounds were measured above the EPA's enforceable drinking water limit at a utility serving ZIP 19711. The EPA set these limits because long-term exposure at higher concentrations is associated with health effects including immune suppression, thyroid changes, and cancer risk increases. Standard pitcher filters (Brita, PUR) are not certified to remove PFAS. The most reliable at-home options are under-sink reverse osmosis systems or activated carbon block filters with an NSF/ANSI 58 certification specifically listing PFOA/PFOS reduction. Your water utility is required to bring levels into compliance by 2029 — filtering at the tap is the practical interim step if you'd like additional protection now.

What to do next

02Three concrete steps

  1. 01

    Install a certified filter

    A reverse osmosis or NSF/ANSI 58-certified carbon block at your kitchen tap is the most reliable solution. Standard pitcher filters (Brita, PUR) don't remove PFAS unless explicitly certified for it. See certified filter picks →

  2. 02

    Read your utility's CCR

    Your water utility publishes an annual Consumer Confidence Report covering the previous year's water quality, including their PFAS treatment plan if any. More detailed than this site's summary. How to read a CCR →

  3. 03

    Reduce other exposure routes

    Water isn't the only input. Replace badly-scratched non-stick pans, skip microwave popcorn bags and greaseproof fast-food wrappers, and choose stainless or cast iron cookware. Full action plan on the FAQ →

Filter Recommendations

Find the right filter for your water
See our tested & reviewed PFAS-certified filters, ranked by CheckPFAS Score

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02ARTESIAN WATER COMPANY

High Risk

PWSID · DE0000552

Water Type
Groundwater
PFAS Detected
8
Above MCL
2
State
Delaware
Data Period
2023–2025

PFAS test results

CompoundDetectedvs. EPA LimitEPA LimitStatus
PFOA
Perfluorooctanoic acid
23.10ppt
578% of limit
4 pptExceeds MCL
PFOS
Perfluorooctane sulfonic acid
6.00ppt
150% of limit
4 pptExceeds MCL
PFHxS
Perfluorohexane sulfonic acid
8.90ppt
89% of limit
10 pptBelow limit
PFPeA
Perfluoropentanoic acid
106.00pptNo federal limitUnregulated
PFBA
Perfluorobutanoic acid
79.10pptNo federal limitUnregulated
PFHxA
Perfluorohexanoic acid
72.20pptNo federal limitUnregulated
PFHpA
Perfluoroheptanoic acid
18.90pptNo federal limitUnregulated
PFBS
Perfluorobutane sulfonic acid
8.70pptNo federal limitUnregulated

03SUEZ WATER DELAWARE

High Risk

PWSID · DE0000564

Water Type
Surface Water
PFAS Detected
9
Above MCL
2
State
Delaware
Data Period
2023–2025

PFAS test results

CompoundDetectedvs. EPA LimitEPA LimitStatus
PFOA
Perfluorooctanoic acid
24.40ppt
610% of limit
4 pptExceeds MCL
PFNA
Perfluorononanoic acid
11.60ppt
116% of limit
10 pptExceeds MCL
PFBA
Perfluorobutanoic acid
40.60pptNo federal limitUnregulated
PFPeA
Perfluoropentanoic acid
32.10pptNo federal limitUnregulated
PFHxA
Perfluorohexanoic acid
31.70pptNo federal limitUnregulated
PFHpA
Perfluoroheptanoic acid
27.70pptNo federal limitUnregulated
PFDA
Perfluorodecanoic acid
4.70pptNo federal limitUnregulated
PFUnA
Perfluoroundecanoic acid
3.80pptNo federal limitUnregulated
Show 1 more compound detected at low levels
PFBSPerfluorobutane sulfonic acid3.70 pptNo federal limit

04NEWARK WATER DEPARTMENT, DE

High Risk

PWSID · DE0000630

Water Type
Groundwater
PFAS Detected
8
Above MCL
2
State
Delaware
Data Period
2023–2025

PFAS test results

CompoundDetectedvs. EPA LimitEPA LimitStatus
PFOA
Perfluorooctanoic acid
25.30ppt
633% of limit
4 pptExceeds MCL
PFOS
Perfluorooctane sulfonic acid
7.50ppt
188% of limit
4 pptExceeds MCL
PFHxS
Perfluorohexane sulfonic acid
5.50ppt
55% of limit
10 pptBelow limit
PFHxA
Perfluorohexanoic acid
13.20pptNo federal limitUnregulated
PFPeA
Perfluoropentanoic acid
12.60pptNo federal limitUnregulated
PFBA
Perfluorobutanoic acid
11.20pptNo federal limitUnregulated
PFHpA
Perfluoroheptanoic acid
7.90pptNo federal limitUnregulated
PFBS
Perfluorobutane sulfonic acid
6.60pptNo federal limitUnregulated

Note: ZIP code 19711 is served by 3 separate water utilities. Results above show data for each system independently.

Source & Methodology

About this data

Source
EPA UCMR 5
Data released
January 2026
Sampling period
January 2023 – December 2025
Systems tested
~10,000 public water systems
Water systems (PWSID)
DE0000552 · DE0000564 · DE0000630
Detection threshold (MRL)
~1.5–2 ppt

Values shown are the highest single-sample concentration measured at entry points to the distribution system. Results reflect water quality at the treatment plant — aging pipes, building plumbing, and on-site storage can affect what actually reaches your tap. "Not detected" means below the MRL, not literally zero.

View raw EPA UCMR 5 occurrence data →

Related

More resources for your area

  1. 01

    How to read your utility's CCR

    Decode your annual Consumer Confidence Report

  2. 02

    On a private well?

    PFAS testing guide for well owners — EPA rules don't apply

  3. 03

    All water systems in Delaware

    Compare utilities statewide

  4. 04

    Which filter removes PFAS?

    Compare every method by removal rate & NSF certification

  5. 05

    PFAS health effects

    What the science shows, condition by condition

  6. 06

    PFAS compound guide

    Health effects & EPA limits for each compound