Hardness
Moderately hard regional estimate
87mg/L as CaCO₃
MyTapWater estimates 5.1 gpg for Chatham County from USGS data. This is regional context, not measured hardness for this utility or your tap.
USGS: soft ≤60; moderately hard 61–120 mg/L as CaCO₃.
Chlorine
Check conflicting range
2.20mg/L
The city lists 2.20 ppm as detected but 0.01–1.20 ppm as the range.
The listed residual limit is 4 mg/L. Ask Savannah to clarify the discrepancy.
Total trihalomethanes (TTHM)
No numeric rating
Verify with utility
The online TTHM row displays percent removal, not a TTHM concentration.
A percentage cannot be compared with a TTHM limit in µg/L. The I&D figure belongs to a different system.
Haloacetic acids (HAA5)
Below 60 µg/L limit
41.025µg/L
City table’s reported result; individual samples nondetect–76.
The listed limit is 60 µg/L and uses an annual-average basis. Individual samples are not compliance averages.
Lead
One tap above action level
3.9µg/L
90th percentile; sampled taps ranged from 0 to 100 µg/L.
The 90th percentile is below the report’s 15 µg/L action level. This is not a household lead test.
Turbidity
Above 95% minimum
99.34% below 0.3 NTU
Percentage of samples meeting the clarity threshold.
The utility lists a 95% treatment-technique criterion.