What's in Sunnyslope County Water Dist — Hollister, Ca, CA tap water

29 contaminants were measured in the Sunnyslope County Water Dist — Hollister, Ca, CA water system's 2022 annual report. Each is shown below against its federal limit.

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Reporting year: 2022
Contaminants measured: 29
Over federal limit: 0
Approaching the limit: 0
Service area: CA
Source: Utility CCR

All within federal limits. Every measured contaminant in this report is below its federal threshold.

Disinfection byproducts

Contaminant	Measured	Federal limit	Status
TTHMTotal trihalomethanes — a group of four chemicals (including chloroform) formed when chlorine reacts with natural organic matter.	52 ug/LAverageSite With Highest Readings	None set	Within the limit
+By source (2)— Site With Highest Readings, Across All Sites Site With Highest ReadingsPlant avg52 ug/L65% of limit Across All SitesPlant range17–52 ug/L65% of limit
HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter.	11 ug/LAverageSite With Highest Readings	None set	Within the limit
+By source (2)— Site With Highest Readings, Across All Sites Site With Highest ReadingsPlant avg11 ug/L18% of limit Across All SitesPlant range6–11 ug/L18% of limit

Physical & aggregate

Contaminant	Measured	Federal limit	Status
TurbidityA measure of cloudiness from suspended particles in the water.	0.35 NTUAverageSurface water	1 NTUMCL	Within the limit
+By source (2)— Groundwater, Surface water GroundwaterPlant avg0.31 NTUrange0.15–0.72 NTU72% of limit Surface waterPlant avg0.35 NTUrange0.24–0.46 NTU46% of limit
AlkalinityA measure of the water's capacity to neutralize acids.	311 mg/LAverageGroundwater	None set	Detected — no federal limit
+By source (2)— Groundwater, Surface water GroundwaterPlant avg311 mg/Lrange280–350 mg/L Surface waterPlant avg140 mg/Lrange140 mg/L
ColorA measure of visible tint in the water.	16AverageSurface water	None set	Detected — no federal limit
+By source (2)— Surface water, Groundwater Surface waterPlant avg16range14–18 GroundwaterPlant avg3range0–5
HardnessA measure of dissolved calcium and magnesium minerals.	430 mg/LAverageGroundwater	None set	Detected — no federal limit
+By source (2)— Groundwater, Surface water GroundwaterPlant avg430 mg/Lrange403–450 mg/L Surface waterPlant avg135 mg/Lrange130–140 mg/L
pHA measure of how acidic or basic the water is.	7.88AverageGroundwater	None set	Detected — no federal limit
+By source (2)— Surface water, Groundwater Surface waterPlant avg7.85range7.1–8.6 GroundwaterPlant avg7.88range7.8–7.99
Specific ConductanceA measure of how well water conducts electricity, which tracks dissolved mineral content.	1320AverageGroundwater	None set	Detected — no federal limit
+By source (2)— Groundwater, Surface water GroundwaterPlant avg1320range1200–1400 Surface waterPlant avg615range610–620
Total Dissolved SolidsTotal dissolved solids — the combined content of all dissolved minerals and salts.	804 mg/LAverageGroundwater	None set	Detected — no federal limit
+By source (2)— Groundwater, Surface water GroundwaterPlant avg804 mg/Lrange690–870 mg/L Surface waterPlant avg320 mg/Lrange320 mg/L

Inorganic chemicals

Contaminant	Measured	Federal limit	Status
NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits.	2.56 mg/LAverageGroundwater	10 mg/LMCL	Within the limit
+By source (2)— Groundwater, Surface water GroundwaterPlant avg2.56 mg/Lrange1.3–3.8 mg/L38% of limit Surface waterPlant avg0.05 mg/Lrange0–0.1 mg/L1% of limit
FluorideA mineral often added to drinking water to help prevent tooth decay.	0.28 mg/LAverageGroundwater	4 mg/LMCL	Within the limit
+By source (2)— Groundwater, Surface water GroundwaterPlant avg0.28 mg/Lrange0.22–0.37 mg/L9% of limit Surface waterPlant avg0.11 mg/Lrange0.1–0.13 mg/L3% of limit
ChlorideA naturally occurring salt compound.	136 mg/LAverageGroundwater	None set	Detected — no federal limit
+By source (2)— Groundwater, Surface water GroundwaterPlant avg136 mg/Lrange110–180 mg/L Surface waterPlant avg100 mg/Lrange100 mg/L
SulfateA naturally occurring mineral from rock and soil.	214 mg/LAverageGroundwater	None set	Detected — no federal limit
+By source (2)— Groundwater, Surface water GroundwaterPlant avg214 mg/Lrange200–250 mg/L Surface waterPlant avg44 mg/Lrange43–45 mg/L

Disinfectants

Contaminant	Measured	Federal limit	Status
ChlorineA disinfectant added to drinking water to kill bacteria and viruses.	0.85 mg/LAverageSite With Highest Readings	4 mg/LMCL	Within the limit
+By source (2)— Across All Sites, Site With Highest Readings Across All SitesPlant range0.1–2.02 mg/L51% of limit Site With Highest ReadingsPlant avg0.85 mg/L21% of limit

Metals

Contaminant	Measured	Federal limit	Status
CopperA metal that enters water from corroding household plumbing.	0.26 mg/L90th percentileAt the tap	None set	Within the limit
ArsenicA naturally occurring element that also enters water from industry and agriculture.	1.6 ug/LAverageSurface water	None set	Within the limit
+By source (2)— Surface water, Groundwater Surface waterPlant avg1.6 ug/Lrange0–3.2 ug/L32% of limit GroundwaterPlant avg1.5 ug/Lrange0–2.6 ug/L26% of limit
LeadA toxic metal that leaches into water from old service lines, solder, and plumbing fixtures.	0 ug/L90th percentileAt the tap	None set	Within the limit
BoronA naturally occurring element from rock and soil.	775 ug/LAverageGroundwater	None set	Detected — no federal limit
+By source (2)— Groundwater, Surface water GroundwaterPlant avg775 ug/Lrange760–790 ug/L Surface waterPlant avgNot detected ug/LrangeNot detected ug/L
CalciumA naturally occurring mineral that contributes to water hardness.	71 mg/LAverageGroundwater	None set	Detected — no federal limit
+By source (2)— Groundwater, Surface water GroundwaterPlant avg71 mg/Lrange60–78 mg/L Surface waterPlant avgNot detected mg/LrangeNot detected mg/L
Chromium, HexavalentHexavalent chromium ('chromium-6') — the more toxic form of chromium.	9.8 ug/LAverageGroundwater	None set	Detected — no federal limit
MagnesiumA naturally occurring mineral that contributes to water hardness.	61 mg/LAverageGroundwater	None set	Detected — no federal limit
+By source (2)— Groundwater, Surface water GroundwaterPlant avg61 mg/Lrange56–73 mg/L Surface waterPlant avg15 mg/Lrange11–18 mg/L
ManganeseA naturally occurring metal from soil and rock.	52 mg/LAverageSurface water	None set	Detected — no federal limit
+By source (2)— Surface water, Groundwater Surface waterPlant avg52 mg/Lrange3–100 mg/L GroundwaterPlant avgNot detected mg/LrangeNot detected mg/L
PotassiumA naturally occurring mineral from rock and soil.	4.3 mg/LAverageSurface water	None set	Detected — no federal limit
+By source (2)— Surface water, Groundwater Surface waterPlant avg4.3 mg/Lrange4.1–4.4 mg/L GroundwaterPlant avg3.16 mg/Lrange2.7–3.7 mg/L
SilicaA naturally occurring compound from sand and rock.	29 mg/LAverageGroundwater	None set	Detected — no federal limit
SodiumA naturally occurring salt component.	134 mg/LAverageGroundwater	None set	Detected — no federal limit
+By source (2)— Groundwater, Surface water GroundwaterPlant avg134 mg/Lrange110–150 mg/L Surface waterPlant avg71 mg/Lrange68–74 mg/L

Radionuclides

Contaminant	Measured	Federal limit	Status
Gross AlphaGross alpha particle activity — a combined measure of alpha-emitting radioactive substances.	2.58 pCi/LAverageGroundwater	15 pCi/LMCL	Within the limit
+By source (2)— Groundwater, Surface water GroundwaterPlant avg2.58 pCi/Lrange2.58–2.58 pCi/L17% of limit Surface waterPlant avg1.85 pCi/Lrange1.67–2.03 pCi/L14% of limit
UraniumA naturally occurring radioactive metal from erosion of natural deposits.	3.1 pCi/LAverageGroundwater	20 pCi/LMCL	Detected — no federal limit
+By source (2)— Groundwater, Surface water GroundwaterPlant avg3.1 pCi/Lrange3.1–3.1 pCi/L Surface waterPlant avg0.98 pCi/Lrange0–1.4 pCi/L

Microbial

Contaminant	Measured	Federal limit	Status
Escherichia coli (E. coli)Escherichia coli — bacteria found in the gut of humans and animals.	0Reported levelNumber of detections	None set	None detected
Total ColiformA group of bacteria used as an indicator of overall water-system sanitation.	0Reported levelNumber of detections	None set	None detected

Source: Sunnyslope County Water Dist — Hollister, Ca, CA's 2022 Consumer Confidence Report — the annual drinking-water report every U.S. utility is required to publish. The numbers on this page are the utility's own. A water-quality report covers an entire service area, not a single address.

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