HAMILTON CITY is served by 1 water provider on file with the EPA.
Data current as of July 2026
🔍Straight from EPA
🧪Real Lab Results
📅Updated Quarterly
🏠Local Expertise
Results for HAMILTON CITY, CA
1 water provider on file serving this city.
Quick answer: HAMILTON CITY's water has no violations on file and no single reading stands out against its peers (1 other providers in this area). It serves roughly 1,799 people, and the full breakdown below reflects everything EPA and California have on record for it.
Lead Summary
Totalhaloaceticacids (HAA5)
Dibromoaceticacid
Aggressive Index
Langelier Index (pH(s))
Chloride
Sulfate
Fluoride
Nitrate
Magnesium
Sodium
Calcium
Alkalinity, Total
Alkalinity, Bicarbonate
Hardness, Total (ASCACO3)
TDS
Nitrate-Nitrite
Adsorbableorganicfluorine
Gross Alpha Particle Activity
pH, Field
Chromium, Hex
Strontium
Barium
Conductivity (at 25°C)
Contaminants found
Metals
Naturally occurring or corrosion-related elements, e.g. lead, arsenic, copper
Lead Summary
Detected: 0.0018 mg/L (ppm)
12/31/2023
Chromium, Hex
Detected: 1.7 UG/L (ppb)
6/24/2025
Strontium
Detected: 400 UG/L (ppb)
6/24/2025
Barium
Detected: 74 UG/L (ppb)
6/24/2025
Disinfection Byproducts
Formed when chlorine used to disinfect water reacts with organic matter
Totalhaloaceticacids (HAA5)
Detected: 2.4 UG/L (ppb)
8/11/2025
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Chloride
Detected: 15 MG/L (ppm)
7/9/2025
Sulfate
Detected: 19 MG/L (ppm)
7/9/2025
Fluoride
Detected: 0.1 MG/L (ppm)
7/9/2025
Often added deliberately for dental health; can also occur naturally.
Nitrate
Detected: 2.5 MG/L (ppm)
7/9/2025
Commonly from agricultural fertilizer runoff or septic systems. Above the legal limit, it's an immediate concern especially for infants.
Nitrate-Nitrite
Detected: 2.6 MG/L (ppm)
6/24/2025
Minerals
Everyday minerals that mainly affect taste and water hardness
Magnesium
Detected: 19 MG/L (ppm)
6/24/2025
Sodium
Detected: 17 MG/L (ppm)
6/24/2025
Calcium
Detected: 37 MG/L (ppm)
6/24/2025
Properties
General water characteristics like pH, hardness, and cloudiness (turbidity)
Langelier Index (pH(s))
Detected: -0.35 LANG
6/24/2025
Hardness, Total (ASCACO3)
Detected: 170 MG/L (ppm)
6/24/2025
Gross Alpha Particle Activity
Detected: 1.7 PCI/L
4/15/2025
pH, Field
Detected: 7.5 PH
6/24/2025
Calculated Parameters
Values worked out mathematically from other test results, not measured directly
Alkalinity, Bicarbonate
Detected: 160 MG/L (ppm)
6/24/2025
Other
Additional substances tested that don't fit neatly into the categories above
Dibromoaceticacid
Detected: 2.4 UG/L (ppb)
8/11/2025
Aggressive Index
Detected: 11.7 AGGR
6/24/2025
Alkalinity, Total
Detected: 160 MG/L (ppm)
6/24/2025
TDS
Detected: 260 MG/L (ppm)
6/24/2025
Adsorbableorganicfluorine
Detected: 970 NG/L (ppt)
4/8/2025
Conductivity (at 25°C)
Detected: 410 UMHO/CM
6/24/2025
Filtration considerations: General system types, not a specific product recommendation.
Contaminant
Whole-House Carbon
Under-Sink RO
Under-Sink Carbon
Total Trihalomethanes (TTHM)
Yes
Yes
Yes
Haloacetic Acids (HAA5)
Yes
Yes
Yes
Chloroform
Yes
Yes
Yes
Chlorine / Taste
Yes
Yes
Yes
Sediment / Turbidity
Yes
Yes
Yes
Trichloroethylene
Yes
Yes
Yes
Tetrachloroethylene
Yes
Yes
Yes
cis-1,2-Dichloroethylene
Yes
Yes
Yes
1,1-Dichloroethylene
Yes
Yes
Yes
Bromoform
Yes
Yes
Yes
Bromodichloromethane
Yes
Yes
Yes
Dibromochloromethane
Yes
Yes
Yes
1,1,2-Trichloroethane
Yes
Yes
Yes
Vinyl Chloride
Yes
Yes
Yes
Carbon Tetrachloride
Yes
Yes
Yes
Benzene
Yes
Yes
Yes
Toluene
Yes
Yes
Yes
Xylene
Yes
Yes
Yes
Totalhaloaceticacids (HAA5)
Yes
Yes
Yes
Lead
Partial
Yes
Partial
Arsenic
Partial
Yes
Partial
Chromium-6 (Hexavalent)
Partial
Yes
Partial
Copper
Partial
Yes
Partial
Combined Uranium
Partial
Yes
Partial
PFOA
Partial
Yes*
Partial
PFOS
Partial
Yes*
Partial
Nitrate
Partial
Yes
Partial
Combined Radium
Partial
Yes
Partial
Dibromoaceticacid
Partial
Yes
Partial
Aggressive Index
Partial
Yes
Partial
Chloride
Partial
Yes
Partial
Sulfate
Partial
Yes
Partial
Fluoride
Partial
Yes
Partial
Alkalinity, Total
Partial
Yes
Partial
TDS
Partial
Yes
Partial
Nitrate-Nitrite
Partial
Yes
Partial
Adsorbableorganicfluorine
Partial
Yes
Partial
Chromium, Hex
Partial
Yes
Partial
Strontium
Partial
Yes
Partial
Barium
Partial
Yes
Partial
Conductivity (at 25°C)
Partial
Yes
Partial
Coliform Bacteria (indicator)
No
Yes
No
Langelier Index (pH(s))
No
No
No
Magnesium
No
Partial
No
Sodium
No
Partial
No
Calcium
No
Partial
No
Alkalinity, Bicarbonate
No
No
No
Hardness, Total (ASCACO3)
No
No
No
Gross Alpha Particle Activity
No
No
No
pH, Field
No
No
No
Individual water providers
CAL-WATER SERVICE CO.-HAMILTON CITYNo violations on file — pop. 1,799