Water samples from natural recreational waters in San Mateo County are sampled each week for concentrations of indicator bacteria including E. Coli, Enterococcus, and Coliform bacteria. If concentrations of indicator bacteria exceed State or County standards, the area is posted to warn users that they may become ill if they engage in water contact activities in the posted area.

More information about results and testing can be found on the San Mateo County Health System site: http://smchealth.org/environ/beaches

This dataset contains readings from January, 2012 to the present and is updated weekly.

Data about free and reduced meal program participation in San Mateo County Schools during the 2013-2014 and 2014-2015 school years

Data about the average sale price of single family homes and common interest development homes in San Mateo County. Common interest development homes include condominiums and townhomes. This data is sourced from the San Mateo County Association of Realtors and is used in affordable housing indicators by the County's Department of Housing.

Employment and unemployment data by city for places in San Mateo County. CDP is "Census Designated Place" - a recognized community that was unincorporated at the time of the 2000 Census.

1) Data may not add due to rounding. All unemployment rates shown are calculated on unrounded data.
2) These data are not seasonally adjusted.

Methodology: Monthly city and CDP labor force data are derived by multiplying current estimates of county employment and unemployment by the employment and unemployment shares (ratios) of each city and CDP at the time of the 2000 Census. Ratios for cities of 25,000 or more persons were developed from special tabulations based on household population only from the Bureau of Labor Statistics. For smaller cities and CDP, ratios were calculated from published census data.

City and CDP unrounded employment and unemployment are summed to get the labor force. The unemployment rate is calculated by dividing unemployment by the labor force. Then the labor force, employment, and unemployment are rounded.

This method assumes that the rates of change in employment and unemployment, since 2000, are exactly the same in each city and CDP as at the county level (i.e., that the shares are still accurate). If this assumption is not true for a specific city or CDP, then the estimates for that area may not represent the current economic conditions. Since this assumption is untested, caution should be employed when using these data.

In April 2013, the San Mateo County Board of Supervisors approved an allocation, through a "Notice of Funding Availability" (NOFA) process, of approximately $13.4 million of unrestricted General Funds for affordable housing purposes. These funds were derived from a one-time distribution of Housing Trust Funds held by former redevelopment agencies in San Mateo County. These unrestricted general funds - which initiated the County's Affordable Housing Fund (AHF) - were set aside to provide financial assistance for the development of multifamily affordable rental housing and provision of emergency and transitional shelter in the County. The Board directed the County's Department of Housing to develop allocation guidelines and recommend projects for funding. As of May 2014, approximately $13.2 million of AHF funds have been allocated, collectively, to six multifamily affordable rental housing developments and four emergency and transitional housing projects ("AHF 1.0").

On August 5, 2014, the County Board of Supervisors authorized the Housing Authority of the County of San Mateo to publish another NOFA, using funds from the Housing Authority's Housing Assistance Program (HAP) Reserves to create affordable housing options for low-, very low-, and extremely low-income households. A total of $5 million was awarded to five projects, including three multifamily affordable housing rental developments, a homeownership project, and a farmworker housing program. This became the second funding round of the AHF ("AHF 2.0").

Data about the average market rent for one and two bedroom apartments in San Mateo County. This dataset includes apartment vacancy rates and the US Housing and Urban Development Department's fair market rent for each quarter.