Hartford Waterworks serves 15,805 people from groundwater. 31 results are on record. Two PFAS, PFOA and PFOS, are above their federal limits (2024 limits that water systems have until at least 2029 to meet); everything else measured is within its reference or not detected.
2,000 ng/L EPA health advisory (screening, not a legal limit)
3.2ng/L
Within reference
26 other contaminants tested, none detected
11Cl-PF3OUdS
4:2 FTS
6:2 FTS
8:2 FTS
9Cl-PF3ONS
ADONA
HFPO-DA (GenX)
NEtFOSAA
NFDHA
NMeFOSAA
PFBA
PFDA
PFDoA
PFEESA
PFHpA
PFHpS
PFHxA
PFMBA
PFMPA
PFNA
PFPeA
PFPeS
PFTA
PFTrDA
PFUnA
Lithium
Compliance and coverage
Lead service lines
6,357service lines inventoried
Lead194
Galvanized, to replace55
Material unknown0
Not lead6,108
From the utility's inventory reported to EPA (2026Q2). Look up your address with the utility.
Compliance
0health-based violations in the last 10 years
From EPA SDWIS. A clean violation history means no enforcement action was recorded; it does not cover contaminants without a limit.
Not in this recordDisinfection by-products weren't monitored in this dataset
No result is not a pass. Your utility's annual water quality report may list them, and a certified lab test covers your own tap.
A federal limit (an MCL or action level) is an enforceable legal cap; a health goal is often stricter. Meeting the limit is a compliance fact, not a health clearance, and PurityMap publishes no overall compliance verdict.
What you can do
Test first, then treat what was found
01 · TestTest your own tap
Plumbing inside a home can add lead that the system record can't show. A tap test tells you what reaches your glass.
Each card names which of this system’s findings its current certification covers, and which it doesn’t.
As an Amazon Associate, PurityMap earns from qualifying purchases. A product appears here only when a current certification record covers at least one identified concern; every concern stays listed. The retail offer is looked up afterwards and never changes which products appear or their order. Affiliate disclosure.
Under-Sink Filter
Aquasana Claryum 3-Stage Max Flow Under-Sink Filter (AQ-6300M)
HARTFORD WATERWORKS (PWS ID WI2670110) is a public water system serving 15,805 people in Hartford, Wisconsin.
Where does HARTFORD WATERWORKS get its water?
HARTFORD WATERWORKS is on record as drawing from groundwater. The source shapes which contaminants matter most for this system.
What does HARTFORD WATERWORKS's monitoring record show?
PurityMap's record for HARTFORD WATERWORKS holds 31 findings: 2 above a reference, 3 detected within the reference and 26 not detected, from 31 evidence records. Every finding links to its source; a substance that was never monitored is shown as pending, not as a pass.
Is HARTFORD WATERWORKS's water safe to drink?
PurityMap does not issue a safety verdict. It publishes HARTFORD WATERWORKS's measured results against each contaminant's benchmark so you can read them in context. Safety depends on the specific finding, your plumbing, and how the water reaches your tap.
How current is this HARTFORD WATERWORKS data?
The latest published record for HARTFORD WATERWORKS is dated 2026-09-16. Utilities report on regulatory cycles, so results reflect the monitoring period rather than a live reading.
Does this assessment represent my home's tap water?
No. It is assessed at the water-system level from HARTFORD WATERWORKS's own monitoring. It does not cover the service line to your building or the plumbing inside it, which can add lead and other metals after the water leaves the system. A tap test is the way to know what reaches your glass.
What contaminants were detected in HARTFORD WATERWORKS?
Perfluorooctanoic acid (PFOA), Perfluorooctanesulfonic acid (PFOS), Perfluorohexanesulfonic acid (PFHxS), Lead (90th percentile) and Perfluorobutanesulfonic acid (PFBS) were detected in this record. Each finding shows its measured value, its reference and its source on this page.
What should I do if I'm concerned about PFAS in HARTFORD WATERWORKS's water?
Start with what the record shows: the PFAS findings above list each measured value against its reference. This record cannot show your home's plumbing, so a tap test tells you what reaches your glass. If you decide to treat your water, look for a filter whose certification covers the specific PFAS compounds in your record; the section "Certified for a concern found here" lists only products with a current certification record for these concerns.
What should I do if I'm concerned about lead in HARTFORD WATERWORKS's water?
Start with what the record shows: the lead findings above list each measured value against its reference. This record cannot show your home's plumbing, so a tap test tells you what reaches your glass. If you decide to treat your water, look for a filter whose certification covers the specific contaminant in your record; the section "Certified for a concern found here" lists only products with a current certification record for these concerns.
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