Connecticut Daycare Water Testing Requirements

Water testing is one of the first items to tackle because the results take time and a failure triggers remediation that can push back your entire licensing timeline by weeks.

Lead Testing (All Water Sources)

Every home daycare in Connecticut must provide lead-safe water test results to the OEC before licensure. This applies whether you're on municipal water or a private well.

The test must be performed by a state-certified laboratory. You'll collect water samples from taps that children will use — kitchen sink, bathroom faucet, any water fountain — following first-draw protocols (collecting the sample first thing in the morning before running the tap, so the water has sat in the pipes overnight).

If your home was built before 1978, lead risk increases substantially due to older plumbing solder and fixtures. Pre-1978 homes may also need a lead paint assessment, which is a separate requirement but often addressed at the same time.

Private Well Water Testing

Homes on private wells face additional requirements beyond lead:

Bacterial testing — checks for coliform bacteria and E. coli, indicating contamination from surface water or septic systems. Must be performed annually through a state-certified lab.

Chemical testing — screens for nitrates, nitrites, and other contaminants specific to your area's geology. Required at initial licensure and annually thereafter.

Testing costs typically run $100 to $300 per round, depending on how many contaminants are screened. Budget for annual retesting as an ongoing operating expense.

Tap Water Temperature

Water temperature at all taps accessible to children must stay between 60°F and 120°F. The upper limit prevents scalding; the lower limit ensures the water is warm enough for effective handwashing.

The OEC licensing specialist will test tap temperature during the inspection using a thermometer. If your water heater is set above 120°F, turn it down before inspection day. Most residential water heaters ship from the factory set at 140°F, so this adjustment is common.

What If Your Water Fails

Elevated lead levels don't necessarily block licensure, but they require remediation. Options include:

• Installing a certified point-of-use filter on affected taps (NSF/ANSI 53 certified for lead reduction)
• Replacing lead service lines or plumbing fixtures
• Flushing the tap for a specified duration before each use (a temporary measure, not a permanent fix)

After remediation, you'll need to retest and submit passing results to the OEC.

Bacterial contamination in well water requires shock chlorination of the well, followed by retesting. If contamination persists, you may need well repair, a new well, or connection to a public water system.

Failed temperature checks are the simplest fix — adjust your water heater thermostat and retest.

Ongoing Requirements

Water testing isn't a one-time hurdle. After licensure:

• Well water homes need annual bacterial and chemical retesting
• Lead testing should be repeated if you change plumbing fixtures or the water system changes
• The OEC may request updated water test results during annual unannounced inspections

Keep all test results on file at your home. The OEC inspector will want to see them.

The Connecticut Home Daycare License Process Guide includes a water testing checklist that walks through sample collection protocols, lists state-certified labs by region, and tracks your testing schedule so annual retests don't slip.

See more Connecticut guides →