C
63

Record-only indicator: C

Not a safety rating. Missing or old measurements can produce a high score.

Coverage: 2/2 mapped systems have a dated lead result; 0/2 have copper results; 0/2 have UCMR monitoring.

New Fairfield, CT 06812

Fairfield County · Population served: 524 · SDWIS 2026-07-21 · UCMR5 August 2026

Administrative-address match: The association is based only on a system administrative address, not a confirmed service boundary. Verify the provider with the local utility.

Water Systems Serving This Area

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CANDLEWOOD KNOLLS WATER AUTHORITY
Groundwater · Pop. 524

Lead: 2.43 ppb; period end 12/31/2025. Copper: not available ppb; period end unknown.

PWSID: CT0910591
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KNOLLCREST TAX DISTRICT
Groundwater · Pop. 356

Lead: 0.0 ppb; period end 12/31/2025. Copper: not available ppb; period end unknown.

PWSID: CT0910081

Reported lead and copper results

ContaminantReported value or boundHistorical comparison valueInterpretationStatus
Lead
2.43 ppbPeriod end: 12/31/2025
15 ppb Largest reported value or bound among mapped systems; not necessarily the largest actual concentration. At/below comparison value

Violation History (Last 5 Years)

70Total (5yr)
3Health-Based
58Major

Public-record summary

Understanding Your Water in New Fairfield

Record-only indicator — incomplete or old records can produce a high score. A score of 100 is not a safety finding. Coverage: 2/2 mapped systems have a dated lead result; 0/2 have copper results; 0/2 have UCMR monitoring. Tap water quality in New Fairfield, Connecticut (06812) receives an record-only indicator of C (Mixed record-based signals) with a score of 63 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is 24 points below the Connecticut state average of 86. The area is served by 2 water systems providing water to approximately 524 people, using groundwater sources. Over the past 5 years, water systems here have accumulated 70 violations, including 3 health-based violations.

Record-only score 63/100 C
vs State ▼ 24 pts below Connecticut avg (86)
Comparison limits No national safety ranking: coverage and service areas overlap.

What a Grade C Means

Grade C summarizes the records available to this model, not household safety. Missing, bounded or old measurements can produce a high score, including 100. Review coverage, dates and the current utility report before interpreting this indicator.

Groundwater: drawn from underground aquifers via wells

Health Information

What These Contaminants Mean for You

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Lead in Your Water

Lead is a toxic metal that can leach from aging pipes and plumbing fixtures.

Health Effects

Even low levels of lead exposure can cause developmental delays in children, kidney damage, and cardiovascular effects in adults. The EPA action level is 15 ppb, but health experts recommend no safe level of lead in drinking water.

Common Sources

Lead enters water primarily through corrosion of lead service lines, lead solder, and brass fixtures — especially in homes built before 1986.

What You Can Do

If lead is detected above 1 ppb, consider using a certified lead-removal filter (NSF/ANSI 53) for drinking and cooking water. Run cold water for 30 seconds before use if water has been sitting in pipes.

Common Questions

Frequently Asked Questions

The record-only indicator is C (63/100). It cannot determine whether your tap water is safe. Missing, bounded or old measurements can produce a high score. Check the coverage and sampling dates below and your utility's current notices.

ZIP code 06812 is served by 2 water systems using groundwater sources, providing water to approximately 524 people. Groundwater is naturally filtered through rock and soil, often requiring less treatment. However, it can be vulnerable to contamination from underground sources like naturally occurring arsenic, nitrates from agriculture, or PFAS from industrial sites.

The largest reported lead value or bound is 2.43 ppb, for the sampling period ending 12/31/2025. This is a system-level 90th-percentile record, not a measurement at your tap. Compare the sampling date and original utility report before interpreting it.

Water systems serving New Fairfield, Connecticut have no matching PFAS monitoring result in this published dataset. This does not mean PFAS are absent — it means no data is currently available. Coverage varies by system and sampling period. You can request PFAS testing from your water utility or use a certified home test kit.

Water systems serving New Fairfield, Connecticut have received 70 violations in the last 5 years, including 3 health-based violations. Violations can range from paperwork issues (monitoring & reporting) to serious health-based violations where contaminant levels exceeded safe limits. Review the violation details above for specifics.

This public-record indicator cannot select household treatment. Confirm your supplier, current utility report and tap-testing results first; match any treatment to a certified contaminant-reduction claim and follow its maintenance instructions.

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