Is Crows Landing, CA Tap Water Safe to Drink?
Graded B, with 6 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
78.8/100
waterverge.com Crows Landing, CA — Water Quality Report
Crows Landing's drinking water received a grade of B (78.8 out of 100), indicating good water quality. The city's 2 water systems serve approximately 570 residents using groundwater.
Lead levels were measured at 0.0 ppb (90th percentile), well within EPA limits. This system has not yet been tested for PFAS under the EPA UCMR 5 program.
The system has 19 violations on record, including 3 health-based violations. 6 remain unresolved.
What to know about Crows Landing's water
Crows Landing ranks #390 out of 694 cities in California for water quality, placing it below average in the state.
Crows Landing relies on groundwater, which is generally less vulnerable to surface contamination but can be affected by naturally occurring minerals like arsenic and nitrate, as well as agricultural and industrial runoff.
As a small community water system, Crows Landing may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is Crows Landing, CA water safe to drink?
Crows Landing's drinking water has significant quality concerns based on EPA testing data. With a grade of B (78.8/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 2 water systems serve approximately 570 residents using groundwater (wells).
Recent water quality updates for Crows Landing
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Crows Landing's water quality assessment. Grade: B (78.8/100).
2 health-based. Contaminants: LEAD AND COPPER RULE REVISIONS.
Federal disaster declaration (FEMA DR-3592). Flood event — may have impacted local water infrastructure.
Federal disaster declaration (FEMA DR-4683). Flood event — may have impacted local water infrastructure.
Contaminants: Nitrate.
1 health-based. Contaminants: Coliform (TCR).
Key contaminant findings
Based on the most recent EPA sampling data for Crows Landing's water supply.
Well within EPA limits.
Violation history
Crows Landing's water system has 19 total violations on record, including 3 health-based violations. 6 remain unresolved. 5 violations were issued in the last 5 years.
Flood & environmental risk
Stanislaus County has experienced 8 federally declared disasters since 1964. Flooding and severe storms can overwhelm water treatment plants, cause sewage overflows, and introduce agricultural runoff, bacteria, and sediment into drinking water supplies. Local water sources include San Joaquin R A Fremont Ford Bridge, San Joaquin R Ab Merced R Nr Newman, San Joaquin R Nr Newman, Orestimba C Nr Newman, San Joaquin R Nr Crows Landing.
Where does Crows Landing's water come from?
Crows Landing's drinking water comes from groundwater (wells), supplied by 2 water systems serving approximately 570 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate. Nearby water bodies include San Joaquin R A Fremont Ford Bridge (river), San Joaquin R Ab Merced R Nr Newman (river), San Joaquin R Nr Newman (river), Orestimba C Nr Newman (river), San Joaquin R Nr Crows Landing (river).
What Crows Landing residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Crows Landing's water.
Your water utility is required to publish an annual Consumer Confidence Report (CCR) with detailed testing results. Ask for the latest copy or check your utility's website.
Crows Landing's area has a history of flooding. After severe weather, watch for boil water advisories from your local utility.
Data: EPA SDWIS, UCMR 5 (PFAS), FEMA, NOAA. Last updated May 2026.
Top contaminants to know
View all ↓Violation summary
Violations & advisories
Top industrial polluters within 10 miles of Crows Landing
Industrial polluters nearby
Reported releases to surface water by facilities near Crows Landing, ranked by pounds discharged annually.
| Facility | Top chemical | To surface water (lbs/yr) | Distance |
|---|---|---|---|
DARLING INGREDIENTS INC CROWS LANDING, CA95313 | — | — | 5.5 mi |
SAPUTO CHEESE USA INC NEWMAN, CA95360 | — | — | 6.6 mi |
CALIFORNIA DAIRIES INC TURLOCK NORTH TURLOCK, CA95380 | — | — | 8.2 mi |
Source: EPA Toxic Release Inventory (TRI) 2023
Flood & disaster history
Stanislaus County has experienced 8 federally declared disasters since 1964. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.
Full contaminants report
| Contaminant | Detected Level | EPA Limit | Unit | Category | Status |
|---|---|---|---|---|---|
| Lead (90th percentile) LeadHeavy Metal A toxic heavy metal that can leach into drinking water from older pipes, solder, and fixtures. No amount of lead in water is considered safe. Health EffectsBrain and nervous system damage in children, kidney damage, high blood pressure, and reproductive problems in adults. EPA Limit15 ppb action level Common SourcesCorrosion of lead pipes, lead solder, brass faucets, and household plumbing. | 0.0 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Crows Landing compares by contaminant
Explore where Crows Landing ranks among all California cities for specific contaminants.
Water source & infrastructure
Where Crows Landing's water comes from
Crows Landing's drinking water is drawn from underground aquifers through wells.
Groundwater is naturally filtered through rock and soil layers, generally requiring less treatment than surface water. However, it can contain naturally occurring contaminants like arsenic, radon, and minerals.
Agricultural activity, septic systems, and industrial operations near well fields can introduce nitrates, pesticides, and volatile organic compounds.
The system is operated by local government ownership and serves approximately 570 people through 2 water systems.
Water bodies near Crows Landing
Crows Landing is located near 5 notable water bodies. These water bodies contribute to the regional watershed and may indirectly affect groundwater quality.
Water systems serving Crows Landing
| System Name | PWSID | Population | Source |
|---|---|---|---|
| CROWS LANDING COMM SVC DISTRICT | CA5000005 | 500 | GW |
| WESTLEY CSD | CA5000408 | 70 | GWP |
How Crows Landing compares
Full California rankings →Crows Landing's score of 78.8/100 is above the average of 57/100 among major California cities. It outscores 8 of 10 nearby cities.
Nearby cities
View California rankings →About Crows Landing, CA
Learn more about your water
Guides and resources related to Crows Landing's water quality findings.
Explore water quality across Stanislaus
Frequently asked questions
Is Crows Landing, CA tap water safe to drink?
Crows Landing's water quality earned a grade of B (78.8/100). Some concerns have been identified. Consider a water filter for an extra layer of protection. The city ranks #390 out of 694 cities tested in California.
What contaminants are in Crows Landing's water?
Lead was measured at 0.0 ppb (90th percentile). 19 violations are on record.
How is Crows Landing's water quality grade calculated?
The grade is based on four factors: violation history (40%), lead and copper levels (25%), PFAS contamination (25%), and regulatory compliance (10%). The score is also adjusted based on how complete the available data is. See our methodology page for full details.
Do I need a water filter in Crows Landing?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Crows Landing's water come from?
Crows Landing's water is sourced from Groundwater. The city has 2 water systems serving approximately 570 residents.
What health violations has Crows Landing's water system had?
Crows Landing has 3 health-based violations on record. The most recent violation was recorded in October 2024. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 6 violations remain unresolved.
Is Crows Landing's groundwater at risk of contamination?
Crows Landing uses groundwater, which can be affected by naturally occurring contaminants like arsenic, radon, and nitrate, as well as agricultural runoff and industrial activity. The system has 19 violations on record that may relate to groundwater quality. Groundwater systems are generally less susceptible to surface contamination but should be monitored for emerging contaminants like PFAS.
How does Crows Landing's water compare to other cities?
Crows Landing ranks #390 out of 694 cities in California (better than 44% of state cities) and #8524 out of 15744 cities nationally (46th percentile). The grade of B reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.