CITY OF GROVER BEACH PUBLIC WORKS DEPT Water Quality Report
Serving roughly 12,701 people in San Luis Obispo County, California.
Data current as of July 2026
🔍Straight from EPA
🧪Real Lab Results
📅Updated Quarterly
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Results for CITY OF GROVER BEACH PUBLIC WORKS DEPT
1 water provider directly on file, serving roughly 12,701 people in San Luis Obispo County, California.
Quick answer: CITY OF GROVER BEACH PUBLIC WORKS DEPT has no violations on file. One reading is worth knowing about: Monochloroaceticacid was measured at 5.3UG/L, among the highest of the 252 providers on file in this area. It's the most notable figure in this system's record among its 252 local peers.
Lead Summary
Copper Summary
Aggressive Index
Langelier Index (pH(s))
Magnesium
Calcium
Sodium
Potassium
Alkalinity, Total
Alkalinity, Bicarbonate
Hardness, Total (ASCACO3)
TDS
Chloride
Sulfate
Fluoride
Nitrate
Nitrate-Nitrite
Turbidity
pH
Iron
Manganese
Chromium, Hex
Perchlorate
Selenium
Copper, Free
Conductivity (at 25°C)
Totalhaloaceticacids (HAA5)
TTHM
Chloroform
Bromodichloromethane
Dibromochloromethane
Dichloroaceticacid
Trichloroaceticacid
Dibromoaceticacid
Bromoform
Monochloroaceticacid
Utility CITY OF GROVER BEACH PUBLIC WORKS DEPTPopulation served 12,701Owner 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
Copper Summary
Detected: 1.4 mg/L (ppm)
12/31/2006
Iron
Detected: 430 UG/L (ppb)
6/18/2025
Mostly an aesthetic issue (metallic taste, staining) rather than a health concern at typical levels.
Manganese
Detected: 15 UG/L (ppb)
6/18/2025
Mainly a taste/staining concern at typical levels; long-term neurological research at high chronic exposure is ongoing.
Chromium, Hex
Detected: 0.68 UG/L (ppb)
4/9/2025
Selenium
Detected: 5.1 UG/L (ppb)
6/18/2025
Copper, Free
Detected: 12 UG/L (ppb)
7/29/2025
Disinfection Byproducts
Formed when chlorine used to disinfect water reacts with organic matter
Totalhaloaceticacids (HAA5)
Detected: 30 UG/L (ppb)
10/20/2025
TTHM
Detected: 31 UG/L (ppb)
10/20/2025
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: 19 UG/L (ppb)
10/20/2025
One of the individual trihalomethane disinfection byproducts, formed when chlorine reacts with organic matter.
Bromodichloromethane
Detected: 8.6 UG/L (ppb)
10/20/2025
Dibromochloromethane
Detected: 3.1 UG/L (ppb)
10/20/2025
Bromoform
Detected: 3 UG/L (ppb)
10/20/2025
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Chloride
Detected: 49 MG/L (ppm)
6/18/2025
Sulfate
Detected: 110 MG/L (ppm)
6/18/2025
Fluoride
Detected: 0.15 MG/L (ppm)
6/18/2025
Often added deliberately for dental health; can also occur naturally.
Nitrate
Detected: 8.1 MG/L (ppm)
10/21/2025
Commonly from agricultural fertilizer runoff or septic systems. Above the legal limit, it's an immediate concern especially for infants.
Nitrate-Nitrite
Detected: 8.2 MG/L (ppm)
5/21/2025
Minerals
Everyday minerals that mainly affect taste and water hardness
Magnesium
Detected: 25 MG/L (ppm)
6/18/2025
Calcium
Detected: 45 MG/L (ppm)
6/18/2025
Sodium
Detected: 44 MG/L (ppm)
6/18/2025
Potassium
Detected: 2.1 MG/L (ppm)
6/18/2025
Properties
General water characteristics like pH, hardness, and cloudiness (turbidity)
Langelier Index (pH(s))
Detected: -0.47 LANG
6/18/2025
Hardness, Total (ASCACO3)
Detected: 210 MG/L (ppm)
6/18/2025
pH
Detected: 7.5 PH
6/18/2025
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: 100 MG/L (ppm)
6/18/2025
Other
Additional substances tested that don't fit neatly into the categories above
Aggressive Index
Detected: 11.6 AGGR
6/18/2025
Alkalinity, Total
Detected: 100 MG/L (ppm)
6/18/2025
TDS
Detected: 470 MG/L (ppm)
6/18/2025
Turbidity
Detected: 0.48 NTU
6/23/2025
A measure of water cloudiness from suspended particles.
Perchlorate
Detected: 1.1 UG/L (ppb)
9/16/2025
Can occur naturally or from industrial/military sources; may interfere with thyroid function at elevated levels.
Conductivity (at 25°C)
Detected: 660 UMHO/CM
6/18/2025
Dichloroaceticacid
Detected: 18 UG/L (ppb)
10/20/2025
Trichloroaceticacid
Detected: 5.7 UG/L (ppb)
10/20/2025
Dibromoaceticacid
Detected: 1.5 UG/L (ppb)
10/20/2025
Monochloroaceticacid
Detected: 5.3 UG/L (ppb)
10/20/2025
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.