What’s in Pasadena Water and Power’s tap water?
Serving 164.3k people in CA. Data below is drawn directly from public water-quality monitoring records — every figure is linked to its source.
Pasadena Water and Power is a public water system serving CA. Ground Report analyzed 14 measured contaminant levels from public monitoring data (2018–2023 data). Of those, 13 were detected above their respective health guideline or action level. The most significant finding is Haloacetic Acids (HAA5) at 362× the EWG Health Guideline (0.1 ppb).
Health guidelines are typically far stricter than legal limits — legal limits (MCLs) and action levels weigh treatment cost and feasibility, while health guidelines reflect health research alone. Being below the legal limit does not mean a contaminant has no measurable health association at that level.
Measured contaminant levels
Legal limits are enforceable standards that weigh treatment cost and feasibility; health guidelines reflect health research alone, so they are often far stricter. The 362× figure compares the measured level to the health guideline.
Source: EWG Tap Water Database →Legal limits are enforceable standards that weigh treatment cost and feasibility; health guidelines reflect health research alone, so they are often far stricter. The 190× figure compares the measured level to the health guideline.
Source: EWG Tap Water Database →Legal limits are enforceable standards that weigh treatment cost and feasibility; health guidelines reflect health research alone, so they are often far stricter. The 115× figure compares the measured level to the health guideline.
Source: EWG Tap Water Database →Legal limits are enforceable standards that weigh treatment cost and feasibility; health guidelines reflect health research alone, so they are often far stricter. The 30× figure compares the measured level to the health guideline.
Source: EWG Tap Water Database →Legal limits are enforceable standards that weigh treatment cost and feasibility; health guidelines reflect health research alone, so they are often far stricter. The 22× figure compares the measured level to the health guideline.
Source: EWG Tap Water Database →Detected at 1.8 ppb, below the 15 ppb action level. EPA sets no safe level for lead.
Source: EPA Safe Drinking Water Information System (SDWIS) — Lead & Copper Rule Samples →A full Ground Report for your exact address includes the specific filter or fix matched to these contaminants, expected cost, and why it works — not just the utility-wide averages shown here. See the fix plan →
Utility-wide averages don’t reflect your specific plumbing, distance from source, or neighborhood. Get your address-level score in seconds.