Your local water, explained
Start with Bakersfield’s covered systems. Other Kern suppliers need their own data.
This Kern County hub covers two Bakersfield water systems with separate 2025 reports. Compare the named provider results below, then open the Bakersfield city guide. These figures do not represent every county utility or private well.
Your water → your home → your system
Your water
Check the supplier on your water bill. City and county boundaries can include several water systems.
Only the listed water system is summarized here. Choose “Other / not sure” if your bill shows a different supplier.
Confirm the provider on your bill, or choose “Other / not sure” to continue without a matched report.
These are utility measurements, not a test at your tap or a current service advisory. Sources checked October 28, 2026
The figures below are provider-specific. They are not a countywide average.
| Utility | Hardness | Hardness source |
|---|---|---|
| 49–105 mg/L as CaCO₃ · Soft to moderately hard averages | 2018–2025 · range of source averages; groundwater range 52–380 | |
| 46–90 mg/L as CaCO₃ · Soft to moderately hard averages | 2021–2025 · range of source averages; groundwater range 10–620 |
2025 utility report; sampling years shown beside each result
Select this exact provider and supply system. A city, county or ZIP match alone does not confirm the water reaching your home.
See the amount, the comparison and what it means. “Below” refers to the stated benchmark, not zero risk.
49–105mg/L as CaCO₃
range of source averages; groundwater range 52–380
USGS hardness classes
Groundwater average 105; surface water 49; KCWA 58.7. Some groundwater samples are much harder. Test the incoming blend before sizing a softener.
2018–2025
View source ↗1.3mg/L
distribution average; range 0.27–2.2
MRDL: 4 mg/L
The report identifies free chlorine. Match the filter’s reduction claim and flow to this disinfectant.
2025
View source ↗69µg/L (ppb)
highest annual average; range ND–120
MCL: 80 ppb
A high individual sample is not the annual compliance statistic. The utility reports compliance; read its follow-up explanation.
2025
View source ↗43µg/L (ppb)
highest annual average; range ND–58
MCL: 60 ppb
Listed as total haloacetic acids (THAA) in this report.
2025
View source ↗ND–0.20mg/L
range of source averages
California MCL: 2 mg/L
Source ranges differ. Standard filtration and softening do not establish fluoride reduction.
2018–2025
View source ↗ND90th percentile
52 sampled taps
Report action level: 15 ppb
No sampled taps exceeded 15 ppb. Nondetect is not zero; a current household test addresses your own plumbing.
2024
View source ↗2.1µg/L (ppb)
groundwater average; range ND–8.6
MCL: 10 ppb
An ND average does not erase individual detections in the reported range.
2018–2025
View source ↗Detectedgroundwater monitoring
separate compounds and sampling years
Compound-specific results; see full report
Do not interpret source maxima as your tap result or infer a compliance violation. Ask for current supply data and exact-model treatment evidence.
2021–2025
View source ↗Selected results with the original sampling dates and measurement basis. Open the utility report for every parameter, notice and footnote.
Open the complete utility report ↗
| What was measured | Reported amount | Sample year / source date | How to read it |
|---|---|---|---|
| Hardness | 49–105 mg/L as CaCO₃range of source averages; groundwater range 52–380 | 2018–2025View source ↗ | Soft to moderately hard averagesGroundwater average 105; surface water 49; KCWA 58.7. Some groundwater samples are much harder. Test the incoming blend before sizing a softener. |
| Chlorine | 1.3 mg/Ldistribution average; range 0.27–2.2 | 2025View source ↗ | Below the 4 mg/L limitThe report identifies free chlorine. Match the filter’s reduction claim and flow to this disinfectant. |
| TTHMs | 69 µg/L (ppb)highest annual average; range ND–120 | 2025View source ↗ | Annual average below 80 ppbA high individual sample is not the annual compliance statistic. The utility reports compliance; read its follow-up explanation. |
| HAA5 / THAA | 43 µg/L (ppb)highest annual average; range ND–58 | 2025View source ↗ | Below the 60 ppb limitListed as total haloacetic acids (THAA) in this report. |
| Fluoride | ND–0.20 mg/Lrange of source averages | 2018–2025View source ↗ | Below California’s 2 mg/L limitSource ranges differ. Standard filtration and softening do not establish fluoride reduction. |
| Lead | ND 90th percentile52 sampled taps | 2024View source ↗ | Below the report’s action levelNo sampled taps exceeded 15 ppb. Nondetect is not zero; a current household test addresses your own plumbing. |
| Arsenic | 2.1 µg/L (ppb)groundwater average; range ND–8.6 | 2018–2025View source ↗ | Reported range below 10 ppbAn ND average does not erase individual detections in the reported range. |
| PFAS | Detected groundwater monitoringseparate compounds and sampling years | 2021–2025View source ↗ | Some samples above listed notification levelsDo not interpret source maxima as your tap result or infer a compliance violation. Ask for current supply data and exact-model treatment evidence. |
| Groundwater hardness | 105 mg/L as CaCO₃average; range 52–380 | 2018–2025View source ↗ | Moderately hard average; wide rangeAbout 6.1 gpg at the average. The maximum is not a home-sizing value. |
| Surface-water hardness | 49 mg/L as CaCO₃average; range 44–54 | 2018–2025View source ↗ | Soft average |
| KCWA purchased-water hardness | 58.7 mg/L as CaCO₃average; range 38.6–89.1 | 2018–2025View source ↗ | Soft averageSeparate purchased-water source; do not average all three sources without blend volumes. |
| Nitrate as nitrogen | 1.4 mg/Lgroundwater average; range ND–6.7 | 2020–2025View source ↗ | Below the 10 mg/L limit |
| Chromium-6 | 0.68 µg/Lgroundwater average; range ND–3.4 | 2024–2025View source ↗ | Below the report’s 10 µg/L limit |
| PFOS | ND–14 ng/L (ppt)groundwater range; average ND | 2021–2025View source ↗ | Detection needs current supply contextReporting ND as the average does not mean every sample was ND. |
| PFHxS | ND–12 ng/L (ppt)groundwater range; average ND | 2021–2025View source ↗ | Some samples above report’s 3 ppt NLA notification level is different from an MCL. This is not a household result. |
| PFBS | 0.39 ng/L (ppt)groundwater average; range ND–5.9 | 2021–2025View source ↗ | Below report’s 500 ppt notification level |
| Copper | 0.11 mg/L90th percentile | 2024View source ↗ | Below the 1.3 mg/L action levelNo sampled taps exceeded the action level. |
| PFOA | ND–10 ng/L (ppt)groundwater range; average ND | 2021–2025View source ↗ | Detection needs current supply contextCheck current utility monitoring and the exact model’s reduction claim. |
In drinking water, ppm ≈ mg/L, ppb ≈ µg/L and ppt ≈ ng/L. Calculated hardness in grains per US gallon (gpg) = mg/L as CaCO₃ ÷ 17.118, rounded to one decimal. ND means below the reporting limit, not zero.
MCL is an enforceable contaminant limit; MRDL is a disinfectant limit. A PHG is a health goal, not the legal limit. Lead/copper action levels use system sampling percentiles, not a safe-tap threshold. TTHM/HAA5 comparisons use locational running annual averages.
PFAS results are compound-specific. Source monitoring, entry-point samples and tap tests are different. Notification and response levels in a utility report are not maximum contaminant levels; do not infer a compliance violation from a single value. EPA PFAS benchmarks and implementation ↗
Choose the system size, keep useful existing equipment, and review your filtration goals.
Source water. Groundwater, treated surface water and purchased Kern County Water Agency supply. These results belong to the Cal Water Bakersfield System, not every local supplier.
2025 utility report; sampling years shown beside each result
Select this exact provider and supply system. A city, county or ZIP match alone does not confirm the water reaching your home.
See the amount, the comparison and what it means. “Below” refers to the stated benchmark, not zero risk.
46–90mg/L as CaCO₃
range of source averages; groundwater range 10–620
USGS hardness classes
Groundwater average 90; surface water 46; KCWA 58.7. Some groundwater samples are much harder. Test the incoming blend before sizing a softener.
2021–2025
View source ↗1.2mg/L
distribution average; range 0.32–2.5
MRDL: 4 mg/L
The report identifies free chlorine. Match the filter’s reduction claim and flow to this disinfectant.
2025
View source ↗54µg/L (ppb)
highest annual average; range ND–84
MCL: 80 ppb
A high individual sample is not the annual compliance statistic. The utility reports compliance; read its follow-up explanation.
2025
View source ↗37µg/L (ppb)
highest annual average; range ND–47
MCL: 60 ppb
Listed as total haloacetic acids (THAA) in this report.
2025
View source ↗0.10–0.19mg/L
range of source averages
California MCL: 2 mg/L
Source ranges differ. Standard filtration and softening do not establish fluoride reduction.
2021–2025
View source ↗ND90th percentile
50 sampled taps
Report action level: 15 ppb
No sampled taps exceeded 15 ppb. Nondetect is not zero; a current household test addresses your own plumbing.
2025
View source ↗NDµg/L (ppb)
groundwater average; range ND–8.9
MCL: 10 ppb
An ND average does not erase individual detections in the reported range.
2021–2025
View source ↗Detectedgroundwater monitoring
separate compounds and sampling years
Compound-specific results; see full report
Do not interpret source maxima as your tap result or infer a compliance violation. Ask for current supply data and exact-model treatment evidence.
2020–2025
View source ↗Selected results with the original sampling dates and measurement basis. Open the utility report for every parameter, notice and footnote.
Open the complete utility report ↗
| What was measured | Reported amount | Sample year / source date | How to read it |
|---|---|---|---|
| Hardness | 46–90 mg/L as CaCO₃range of source averages; groundwater range 10–620 | 2021–2025View source ↗ | Soft to moderately hard averagesGroundwater average 90; surface water 46; KCWA 58.7. Some groundwater samples are much harder. Test the incoming blend before sizing a softener. |
| Chlorine | 1.2 mg/Ldistribution average; range 0.32–2.5 | 2025View source ↗ | Below the 4 mg/L limitThe report identifies free chlorine. Match the filter’s reduction claim and flow to this disinfectant. |
| TTHMs | 54 µg/L (ppb)highest annual average; range ND–84 | 2025View source ↗ | Annual average below 80 ppbA high individual sample is not the annual compliance statistic. The utility reports compliance; read its follow-up explanation. |
| HAA5 / THAA | 37 µg/L (ppb)highest annual average; range ND–47 | 2025View source ↗ | Below the 60 ppb limitListed as total haloacetic acids (THAA) in this report. |
| Fluoride | 0.10–0.19 mg/Lrange of source averages | 2021–2025View source ↗ | Below California’s 2 mg/L limitSource ranges differ. Standard filtration and softening do not establish fluoride reduction. |
| Lead | ND 90th percentile50 sampled taps | 2025View source ↗ | Below the report’s action levelNo sampled taps exceeded 15 ppb. Nondetect is not zero; a current household test addresses your own plumbing. |
| Arsenic | ND µg/L (ppb)groundwater average; range ND–8.9 | 2021–2025View source ↗ | Reported range below 10 ppbAn ND average does not erase individual detections in the reported range. |
| PFAS | Detected groundwater monitoringseparate compounds and sampling years | 2020–2025View source ↗ | Some samples above listed notification levelsDo not interpret source maxima as your tap result or infer a compliance violation. Ask for current supply data and exact-model treatment evidence. |
| Groundwater hardness | 90 mg/L as CaCO₃average; range 10–620 | 2021–2025View source ↗ | Moderately hard average; wide rangeAbout 5.3 gpg at the average. The maximum is not a home-sizing value. |
| Surface-water hardness | 46 mg/L as CaCO₃average; range 42–57 | 2021–2025View source ↗ | Soft average |
| KCWA purchased-water hardness | 58.7 mg/L as CaCO₃average; range 38.6–89.1 | 2021–2025View source ↗ | Soft averageSeparate purchased-water source; do not average all three sources without blend volumes. |
| Nitrate as nitrogen | 1.2 mg/Lgroundwater average; range ND–3.6 | 2025View source ↗ | Below the 10 mg/L limit |
| Chromium-6 | 0.83 µg/Lgroundwater average; range ND–2.0 | 2017–2025View source ↗ | Below the report’s 10 µg/L limit |
| PFOS | ND–8.8 ng/L (ppt)groundwater range; average ND | 2020–2025View source ↗ | Detection needs current supply contextReporting ND as the average does not mean every sample was ND. |
| PFHxS | ND–4.6 ng/L (ppt)groundwater range; average ND | 2020–2025View source ↗ | Some samples above report’s 3 ppt NLA notification level is different from an MCL. This is not a household result. |
| PFBS | 0.10 ng/L (ppt)groundwater average; range ND–4.7 | 2020–2025View source ↗ | Below report’s 500 ppt notification level |
| Copper | 0.16 mg/L90th percentile | 2025View source ↗ | Below the 1.3 mg/L action levelNo sampled taps exceeded the action level. |
In drinking water, ppm ≈ mg/L, ppb ≈ µg/L and ppt ≈ ng/L. Calculated hardness in grains per US gallon (gpg) = mg/L as CaCO₃ ÷ 17.118, rounded to one decimal. ND means below the reporting limit, not zero.
MCL is an enforceable contaminant limit; MRDL is a disinfectant limit. A PHG is a health goal, not the legal limit. Lead/copper action levels use system sampling percentiles, not a safe-tap threshold. TTHM/HAA5 comparisons use locational running annual averages.
PFAS results are compound-specific. Source monitoring, entry-point samples and tap tests are different. Notification and response levels in a utility report are not maximum contaminant levels; do not infer a compliance violation from a single value. EPA PFAS benchmarks and implementation ↗
Choose the system size, keep useful existing equipment, and review your filtration goals.
Source water. Groundwater, treated surface water and purchased Kern County Water Agency supply. The City system also purchases North Garden water, whose detailed report is separate.
Continue with your home details for general filtration guidance. We will not use another utility’s numbers as your result.
Find My Water System →A city report cannot establish a well’s water quality. Well-water treatment depends on your test results and site conditions.
Explore well-water systems →Email delivery is coming soon. Copy the report link to share it now.
More about your local water
Kern County includes many water suppliers and private wells. A purchased-water reference to Kern County Water Agency does not make one retail report countywide. Use the provider on your bill and confirm the exact system with the utility. Private wells require current laboratory testing and site-specific treatment decisions.
These local providers publish separate reports. Follow the matching utility link; the measurements above do not describe these systems.
A useful local question
Only if one of the listed systems supplies the home. For another supplier, request its current Consumer Confidence Report. For a private well, arrange testing before selecting treatment. Never substitute the Bakersfield source averages for an unknown hardness or contaminant result elsewhere in the county.
We keep each utility’s results separate, show the reported sample year, and distinguish averages, maxima and tap-sampling percentiles. Hardness classifications use USGS ranges. Missing data stays unknown.
Sources checked October 28, 2026
Your water → your home → your system
Choose the system size, keep useful existing equipment, and review your filtration goals.