Is Griswold, Connecticut tap water safe?
6 water systems report serving Griswold. Your water depends on which one serves your address. Check your bill if unsure.
B
Jewett City Water Company
Serves 6,840 people · Surface water · Full report →
No health-based violations in the last 5 years; 6 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).
A
Ctwc - Bay Mountain
Serves 440 people · Groundwater · Full report →
No health-based violations in the last 5 years; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2023).
A
Jewett City Water Co., S & W System
Serves 320 people · Groundwater · Full report →
No health-based violations in the last 5 years; 1 monitoring/reporting violation; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2023).
A
Ctwc - Country Mobile Div.
Serves 186 people · Groundwater · Full report →
No health-based violations in the last 5 years; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2025).
A
Griswold MHP LLC
Serves 99 people · Groundwater · Full report →
No health-based violations in the last 5 years; 1 monitoring/reporting violation; No UCMR 5 PFAS results on file; Lead 90th percentile above the new 10 ppb action level (LCRI, effective Nov 1, 2027); Lead 90th percentile below the action level (2026).
B
Ashland Pond Mobile Home Park
Serves 74 people · Groundwater · Full report →
1 health-based violation in the last 5 years; 2 monitoring/reporting violations; 1 not yet resolved; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2024).