Serving roughly 3,632 people in Mendocino County, California.
Data current as of July 2026
🔍Straight from EPA
🧪Real Lab Results
📅Updated Quarterly
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Results for BROOKTRAILS TOWNSHIP CSD
1 water provider directly on file, serving roughly 3,632 people in Mendocino County, California.
Quick answer: BROOKTRAILS TOWNSHIP CSD has no violations on file. One reading is worth knowing about: Sodium was measured at 82MG/L, among the highest of the 265 providers on file in this area. It's the most notable figure in this system's record among its 265 local peers.
Lead Summary
Totalhaloaceticacids (HAA5)
TTHM
Chloroform
Bromodichloromethane
Dibromochloromethane
Dichloroaceticacid
Trichloroaceticacid
Monobromoaceticacid
Carbon, Total
Aggressive Index
Sodium
Magnesium
Calcium
Alkalinity, Total
Alkalinity, Bicarbonate
Hardness, Total (ASCACO3)
TDS
Chloride
Sulfate
Turbidity
pH
Odor
Aluminum
Copper, Free
Conductivity (at 25°C)
Utility BROOKTRAILS TOWNSHIP CSDPopulation served 3,632Owner Local government
No violations on file
Contaminants found
Metals
Naturally occurring or corrosion-related elements, e.g. lead, arsenic, copper
Lead Summary
Detected: 0 mg/L (ppm)
12/31/2024
Aluminum
Detected: 57 UG/L (ppb)
7/15/2025
Copper, Free
Detected: 600 UG/L (ppb)
7/15/2025
Disinfection Byproducts
Formed when chlorine used to disinfect water reacts with organic matter
Totalhaloaceticacids (HAA5)
Detected: 31.6 UG/L (ppb)
7/15/2025
TTHM
Detected: 71.76 UG/L (ppb)
7/15/2025
A group of disinfection byproducts formed when chlorine reacts with organic matter. Long-term exposure above the legal limit has been linked to increased cancer risk in some studies.
Chloroform
Detected: 64.05 UG/L (ppb)
7/15/2025
One of the individual trihalomethane disinfection byproducts, formed when chlorine reacts with organic matter.
Bromodichloromethane
Detected: 6.55 UG/L (ppb)
7/15/2025
Dibromochloromethane
Detected: 1.16 UG/L (ppb)
7/15/2025
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Chloride
Detected: 3.9 MG/L (ppm)
7/15/2025
Sulfate
Detected: 2.6 MG/L (ppm)
7/15/2025
Minerals
Everyday minerals that mainly affect taste and water hardness
Sodium
Detected: 82 MG/L (ppm)
7/15/2025
Magnesium
Detected: 11 MG/L (ppm)
7/15/2025
Calcium
Detected: 23 MG/L (ppm)
7/15/2025
Properties
General water characteristics like pH, hardness, and cloudiness (turbidity)
Hardness, Total (ASCACO3)
Detected: 103 MG/L (ppm)
7/15/2025
pH
Detected: 7.4 PH
7/15/2025
A measure of how acidic or basic the water is (7 is neutral). Affects taste and plumbing, not a direct health measure.
Calculated Parameters
Values worked out mathematically from other test results, not measured directly
Alkalinity, Bicarbonate
Detected: 56 MG/L (ppm)
9/17/2025
Other
Additional substances tested that don't fit neatly into the categories above
Dichloroaceticacid
Detected: 9.5 UG/L (ppb)
7/15/2025
Trichloroaceticacid
Detected: 22.1 UG/L (ppb)
7/15/2025
Monobromoaceticacid
Detected: 2.3 UG/L (ppb)
7/15/2025
Carbon, Total
Detected: 1.35 MG/L (ppm)
9/17/2025
Aggressive Index
Detected: 10.82 AGGR
7/15/2025
Alkalinity, Total
Detected: 56 MG/L (ppm)
9/17/2025
TDS
Detected: 54 MG/L (ppm)
7/15/2025
Turbidity
Detected: 3.6 NTU
7/15/2025
A measure of water cloudiness from suspended particles.
Odor
Detected: 10 TON
7/15/2025
Conductivity (at 25°C)
Detected: 100 UMHO/CM
7/15/2025
Filtration considerations: See the table below for how whole-house carbon, under-sink reverse osmosis, and under-sink carbon systems compare against what's actually on file here. These are general system types, not a specific product recommendation.